CWS CONSTRUCTION INVESTMENT JOINT STOCK COMPANY
DESCRIPTION
DETAILED CONSTRUCTION PLANNING SCALE 1/500
RESIDENTIAL SERVICES ALONG LAI GIANG RIVER
LOCATION: BONG SON WARD, HOAI NHON TOWN, BINH DINH PROVINCE
Hoai Nhon, year 2022.
SOCIALIST REPUBLIC OF VIETNAM
Independence - Freedom - Happiness
DESCRIPTION
DETAILED CONSTRUCTION PLANNING SCALE 1/500
RESIDENTIAL SERVICES ALONG LAI GIANG RIVER
LOCATION: BONG SON WARD, HOAI NHON TOWN, BINH DINH PROVINCE
INVESTOR: PEOPLE'S COMMITTEE HOAI NHON TOWN | CONSULTING UNIT: JOINT STOCK COMPANY CWS CONSTRUCTION INVESTMENT |
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Hoai Nhon, year 2022.
CWS CONSTRUCTION INVESTMENT JOINT STOCK COMPANY | SOCIALIST REPUBLIC OF VIETNAM Independence - Freedom - Happiness Da Nang, June 2022. |
DESCRIPTION
DETAILED CONSTRUCTION PLANNING SCALE 1/500
RESIDENTIAL SERVICES ALONG LAI GIANG RIVER
LOCATION: BONG SON WARD, HOAI NHON TOWN, BINH DINH PROVINCE
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Planning approval agency: People's Committee of Hoai Nhon Town.
Planning appraisal agency: Department of Urban Management of Hoai Nhon Town.
Planning organization: Hoai Nhon Town Land Fund Development and Investment Project Management Board.
Planning agency: CWS Construction Investment Joint Stock Company
Planning participants:
Technical Management |
: Architect Nguyen Phi My. |
Project manager |
: Architect Nguyen Huu Thanh. |
Head of planning design |
: Architect Ngo Tat Phat. |
Traffic design leader |
: Architect Nguyen Phi My. |
Electrical design leader |
: Architect Nguyen Xuan Tra. |
Head of water supply and drainage design |
: Architect Le Huu Tam. |
Join |
: Architect Phan Xuan Phuong. |
|
: Architect Vo Thi Thanh Thao. |
Economy |
: Architect Pham Thi Hien. |
A. INTRODUCTION
1. Reasons and necessity of planning
Hoai Nhon is a coastal town in the key economic region of the Central region, the center between two major cities: Quy Nhon city, Binh Dinh province (85 km away) and Quang Ngai city, Quang Ngai province (90 km away), the driving force for the development of the northern region of Binh Dinh province, with a 24 km long coastline, 2 estuaries (Tam Quan and An Du) and a regional storm shelter for fishing vessels, with a fleet of more than 2,200 fishing vessels, with over 80% of them participating in offshore fishing, making an important contribution to promoting the development of the marine economy associated with protecting the sovereignty of the sea and islands of the Fatherland. Bong Son is a central ward of Hoai Nhon Town where there is a large concentration of residents, administrative, educational, medical centers, high population density, strong economic development, the ability to generate large sources of income, so the need for housing for people is very necessary and a hot issue of the area. Planning to create a residential service area will solve the current shortages of the area as well as the Town.
Currently, the province's key projects have been and are being implemented in the town in general and Bong Son ward in particular, attracting a large labor force and population, so the demand for housing is very large, but the land fund in residential areas and resettlement areas has not been effectively exploited, there is no detailed planning, causing difficulties in management, granting construction permits, making it difficult for people to apply for permission to build houses, leading to spontaneous construction, wasting land funds and causing frustration for people.
With a very favorable geopolitical position, potential and strengths, Hoai Nhon has a very important strategic position and role in the socio-economic development, national defense and security of the district and has a great influence, creating a spillover to promote socio-economic development, national defense and security of the whole region for Hoai An, An Lao, Phu My districts and a part of the South of Duc Pho district (Quang Ngai province).
According to the Urban Development Program of Binh Dinh Province to 2035, Hoai Nhon Town is identified as a provincial town, a central urban area of the sub-region (including Phu My, Hoai Nhon, An Lao, Hoai An districts); a center of trade, services, marine economic development, agricultural and forestry product processing, tourism services for the northern region of the province. From there, it connects with the northern urban areas to form a chain of strongly and sustainably developing urban areas. Hoai Nhon is also a locality with an important strategic position in terms of security and national defense.
Based on development policies and orientations, Binh Dinh province and Hoai Nhon town have focused all resources on synchronous construction of socio-economic infrastructure, technical infrastructure and construction of many new public works at urban and regional levels, trade and tourism services have developed strongly, facilitating investment attraction and driving socio-economic development. Hoai Nhon town follows the orientation of construction and development of Hoai Nhon urban area in the period of 2019-2035.
With its location and available potential, Hoai Nhon Town is oriented to be an urban area with the role of an economic center in the northern sub-region of Binh Dinh province, including the districts of Phu My, Hoai Nhon, An Lao and Hoai An.
- Is an important transportation hub in the North of the province in the transportation infrastructure network of Binh Dinh province.
- Is a center of trade, services, marine economic development; tourism services for the northern region of Binh Dinh province.
- Is an education and training center, providing trained labor and high quality human resources.
- Is a medical center, caring for and protecting community health for the northern region of the province.
- Is the core urban area in the North of Binh Dinh province in the urban system of the whole province, reaching type IV urban area in June 2021, developing towards a green and sustainable urban area.
- It is a high-tech agricultural and light industrial logistics service center approved by the Prime Minister in Decision No. 1672/QD-TTg dated November 30, 2018 on approving the Binh Dinh Provincial Regional Planning Project to 2035; in which, priority is given to developing processing, textile, electronics industries... mainly serving the exploitation, fishing, processing and export of aquatic products of the whole province. On the other hand, the development of Hoai Nhon Town also plays a role in supporting the western districts of the province in developing high-tech agriculture, raw material areas providing processing technology for the domestic and foreign markets.
The establishment of the 1/500 scale detailed construction planning for residential services along Lai Giang river serves as an important legal basis for studying and preparing a feasibility report (construction investment project) and implementing the next design steps, completing basic construction procedures before implementing construction; Specifically determining the land fund for construction investment, type and purpose of land use; clearly identifying construction investment items; serving the organization of compensation inventory and site clearance.
As a legal basis for urban construction management, construction licensing, upgrading and renovating technical infrastructure; improving the quality and urban living environment,... effectively exploiting land funds in Bong Son ward to serve key urban projects is very necessary. In particular, the residential service area along Lai Giang river, Bong Son ward is one of the new urban residential-service areas that need to be planned in detail with a complete and synchronous technical infrastructure system, meeting the increasing demand for residential land of people in the area as well as those from other places, in line with the development needs of a modern new urban area.
To meet the development needs in the new period, invest in building Hoai Nhon Town to develop infrastructure, upgrade urban areas, and ensure the criteria of a type III urban area.
For the above reasons, it is necessary to establish a detailed construction planning project at a scale of 1/500 for residential services along Lai Giang River, as a basis for urban construction management; Implementing construction investment policies; Guiding the settlement of projects and plans approved by competent authorities.
2. Planning objectives
- Forming residential, commercial and service areas with landscape architecture space and technical infrastructure system that is connected and synchronized with the surrounding technical infrastructure system.
- Establishing a detailed construction plan at a scale of 1/500 for residential services along Lai Giang river serves as an important legal basis for researching and preparing a feasibility report (construction investment project) and implementing the next design steps, completing basic construction procedures before implementing construction; Specifically determining the land fund for construction investment, type and purpose of land use; clearly identifying construction investment items; serving the organization of compensation and site clearance inspection.
- Serve as a basis for planning investment to complete construction items and manage construction according to approved planning.
- In accordance with the housing development program of Binh Dinh province for the period 2020-2035 approved by the People's Committee of Binh Dinh province in Decision No. 75/2019/QD-UBND dated December 21, 2019;
- In accordance with the Hoai Nhon urban development program to 2035 approved by the People's Committee of Binh Dinh province in Decision No. 2700/QD-UBND dated August 2, 2019;
- Provide legal basis for construction management according to planning and investment project implementation.
3. Scope, boundaries, and planning area.
The planning location is within the overall Hoai Nhon Urban Area.
Figure 1: Planning location in the overall urban area of Hoai Nhon
Figure 2: Planning location in overall traffic connection
Figure 3: Planning location in the overall urban land use of Hoai Nhon
Planning area belongs to Bong Son Ward - Hoai Nhon Town - Binh Dinh Province
- Detailed planning area with total area: 27.56Ha
- The boundaries of the planning area are as follows:
+ North borders: Truong Chinh Street;
+ East borders: Can River;
+ South borders: Lai Giang River
+ West borders: North-South railway;
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Figure 4: Planning location |
4. Planning design basis
4.1. Legal documents
- Pursuant to the Law on Urban Planning dated June 17, 2009;
- Law No. 62/2020/QH14 dated June 17, 2020 of the National Assembly Amending and supplementing a number of articles of the Law on Construction;
- Pursuant to Law No. 35/2018/QH14 of the National Assembly Amending and supplementing a number of articles of 37 laws related to planning;
- Decree No. 37/2010/ND-CP dated April 7, 2010 of the Government on the establishment, appraisal, approval and management of urban planning;
- Decree No. 38/2010/ND-CP dated April 7, 2010 of the Government on management of urban landscape architecture space;
- Decree No. 39/2010/ND-CP dated April 7, 2010 of the Government on management of urban underground construction space;
- Pursuant to Decree No. 72/2019/ND-CP of the Government on amending and supplementing a number of articles of Decree No. 37/2010/ND-CP dated April 7, 2010 on the establishment, appraisal, approval and management of urban planning and Decree No. 44/2015/ND-CP dated May 6, 2015 detailing a number of contents on construction planning;
- Decree No. 56/2018/ND-CP of the Government: Regulations on management and protection of railway infrastructure;
- Circular No. 06/2013/TT-BXD dated May 13, 2013 of the Minister of Construction providing guidance on urban design content;
- Circular No. 01/2016/TT-BXD dated February 1, 2016 on promulgating National Technical Regulations on Technical Infrastructure Works;
- Circular No. 12/2016/TT-BXD dated June 29, 2016 of the Ministry of Construction regulating the dossiers of tasks and projects of regional construction planning, urban planning and construction planning of special functional areas;
- Circular No. 20/2019/TT-BXD dated December 31, 2019 of the Minister of Construction on Guidance on determining and managing construction planning and urban planning costs;
- Pursuant to Decision No. 2185/QD-UBND dated June 27, 2019 of the People's Committee of Binh Dinh province on approving the general planning for urban construction of Hoai Nhon, Binh Dinh province to 2035;
- Pursuant to Decision No. 3512/QD-UBND dated August 24, 2021 of the People's Committee of Binh Dinh province on local adjustment of the general urban construction planning of Hoai Nhon, Binh Dinh province to 2035;
- Pursuant to Decision No. 25/2019/QD-UBND dated June 27, 2019 of the People's Committee of Binh Dinh province promulgating regulations on the establishment, appraisal, approval, and management of the implementation of urban planning and construction planning in the province;
- Pursuant to Decision No. 35/2020/QD-UBND dated June 15, 2020 of the People's Committee of Binh Dinh province amending and supplementing a number of articles of the Regulations on preparation, appraisal, approval, and management of implementation of urban planning and construction planning in the province promulgated in accordance with Decision No. 25/2019/QD-UBND dated June 27, 2019 of the People's Committee of Binh Dinh province;
- Pursuant to Instruction No. 38/HD-SXD dated September 12, 2019 of Binh Dinh Department of Construction on the preparation, appraisal, approval, and management of the implementation of urban planning and construction planning in the province;
- Pursuant to Decision No. 17961/QD-UBND dated December 21, 2021 of the Chairman of the People's Committee
of Hoai Nhon town on approving the tasks and cost estimates of the detailed construction planning at a scale of 1/500 for residential services along Lai Giang river;
- Pursuant to Decision No. 388/QD-UBND dated January 11, 2022 of the Chairman of the People's Committee of
Hoai Nhon town on approving the online consulting bidding documents (E-HSMT) for the bidding package for the detailed construction planning at a scale of 1/500 for residential services along Lai Giang river;
- Pursuant to Decision No. 3164/QD-UBND dated March 22, 2022 of the Chairman of the People's Committee of Hoai Nhon town on approving the results of the selection of a consulting contractor for the Package: Establishing a detailed construction plan at a scale of 1/500 for residential services along Lai Giang river.
4.2. Other documents
- Vietnam Construction Standards (QCXDVN 01:2021/BXD);
- National technical regulation (QCVN 07-10-2016/BXD);
- National Technical Regulation (QCVN 28:2010/BTNMT);
- Based on the map of the General Urban Construction Planning of Hoai Nhon, Binh Dinh province to 2035;
- Based on the plot map of Bong Son ward at scale 1/2,000
- Based on topographic survey map at scale 1/500.
- Documents on engineering geology, hydrology...;
- And some other relevant documents;
- Documents and data on natural conditions, socio-economic status, and technical infrastructure status in the planning area provided by the locality and relevant agencies and through actual investigation.
B. ANALYSIS AND ASSESSMENT OF NATURAL CONDITIONS AND CURRENT STATUS
1. Natural conditions
1.1. Location of land boundaries, topography and geomorphology
a. Location
Planning area belongs to Bong Son Ward - Hoai Nhon Town - Binh Dinh Province
- Planning area: 27.56Ha
- The boundaries of the planning area are as follows:
+ North borders: Truong Chinh Street;
+ East borders: Can River;
+ South borders: Lai Giang River
+ West borders: North-South railway;
Figure 5: Current status of planning
b. Topography, geomorphology
- The planning area is located on Dao Duy Tu axis and looks towards Lai Giang river, belonging to the boundary of Hoai Nhon town. The terrain of the research area is relatively flat in the current residential area, low-lying towards the canal area, but this is a low-lying area, the lowest elevation is +1.21m in the Southeast direction of the land adjacent to the edge of Lai Giang river, the highest elevation is +11.82m . located in the West direction of the land adjacent to Dao Duy Tu street and the North-South railway at the intersection at the same elevation.
1.2. Climate
- Binh Dinh's climate is tropical, humid, and monsoon. Due to the complexity of the terrain, the monsoon changes direction and intensity quite a bit when it enters the mainland.
a . Temperature
- Average annual air temperature: in coastal areas is 23- 29°C.
b. Air humidity
- Average monthly absolute humidity in the year: in coastal areas, the average absolute humidity is 27.9% and relative humidity is 79%.
c. Rain
- Average annual rainfall is 1800 mm; Rainfall is below 100 mm in January - August. Rainfall is concentrated from September to December 1412 mm. Highest in October, November, average 550-1,000 mm/month; lowest in January, February, March, April, average 23-40 mm/month.
d. Sunny
- Total sunshine hours reach 2500 hours, highest sunshine hours are 270 hours in May, lowest 112 hours in December.
e. Wind
- The main wind direction is South for 3 months, from May to August. The East wind is mainly from August to May of the following year.
- The average wind speed in Binh Dinh has significant seasonal variations throughout the year.
- Average monthly wind speed 1.2m/s- 2.9m/s
- The highest wind speed reached 3.6m/s in June
- The windy period of the year lasts 6 months, from October to March of the following year, the calm period lasts 6 months, from March to October.
- The southeast wind from the sea blows in from March to June, the wind is hot and humid.
- Southwest Fon winds are dry and hot, active from July to August.
f. Storm
- Every year, Quy Nhon's climate is directly affected by one or two storms or tropical depressions. The storm season usually occurs from May to November, most concentrated in September to November.
1.3. Engineering geology – hydrogeology
- In the current residential planning area along Dao Duy Tu Street, the remaining entire planned land has not been leveled, the main drainage direction is in the Northwest-Northeast and West-East direction, flowing from Dao Duy Tu Street to Lai Giang River and to Can River.
2. Current status of land use and technical infrastructure.
2.1. Current land use status
-The planning area has many types of land such as residential land, public land, religious land, land for growing crops, annual and short-term crops, some unused and low-lying land, the entire land area has solid and semi-solid structures. The area and proportion of land types are according to the following table:
Table 1: Statistics on current land use status
LAND USE STATUS TABLE |
STT | SOIL TYPE | Area (m2) | Area (ha) | Ratio (%) |
|
I | Agricultural land | 154 474.2 | 15.45 | 56.05 |
|
1 |
Flat land for growing other annual crops |
136 358.8 |
13.64 |
49.48 |
|
2 |
Land for perennial crops |
18 115.4 |
1.81 |
6.57 |
|
II | Non-agricultural land | 118 717.1 | 11.87 | 43.07 |
|
3 |
Residential land |
79 919.9 |
7.99 |
29.00 |
|
4 |
Religious land |
5 470.7 |
0.55 |
1.98 |
|
5 |
Cemetery land |
75.9 |
0.01 |
0.03 |
|
6 |
Land for green trees and sports |
2 275.2 |
0.23 |
0.83 |
|
7 |
Land and water |
5 611.5 |
0.56 |
2.04 |
|
9 |
Traffic land |
25 363.9 |
2.54 |
9.20 |
|
III | Unused land | 2 418.9 | 0.24 | 0.88 |
|
10 |
Unused flat land |
2 418.9 |
0.24 |
0.88 |
|
TOTAL | 275 610.2 | 27.56 | 100 |
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- In the current planning area, there are many permanent and temporary houses, public or religious land, the remaining land is mainly land for growing crops, annual crops, coconuts, vacant land, and a low-lying area. The terrain of the area is considered quite diverse, sloping gently from Truong Chinh Street to the river and changing some areas that have not fully exploited the land fund.
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| Figure 6: Current status of railway intersection | Figure 7: Current status of Truong Chinh Street |
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| Figure 8: Current status of the road along Lai Giang river | Figure 9: Current status of crop land and coconut plantation |
Figure 10: Current status of residential area Figure 11: Current status of residential area |
2.2. Current status of technical infrastructure
a. Current status of the foundation
- The terrain of the planning area is not uniform, the lowest elevation is +1.21m in the Southeast of the research area close to the edge of Lai Giang River, the highest elevation is +11.82m in the West of the research area.
b. Current status of rainwater drainage
- In the area, there is no investment in a rainwater drainage system, so rainwater flows naturally to the low-lying area and the Can River. The entire Truong Chinh Street flows to the South of the planning area according to the terrain slope, then flows to the Can River and drains into the Lai Giang River.
- On Truong Chinh route, a sewer line has been invested in running along the investment route for the existing residential area outside the research boundary.
c. Traffic status
- Currently, the northern boundary is Truong Chinh Street, the southern boundary is Lai Giang River embankment concrete road. In the research area of residential roads, some concrete roads are still dirt roads that have not been invested in construction.
Figure 12: Current traffic situation Figure 13: Current traffic situation
Table 2: Current traffic situation
STATISTICS TABLE OF CURRENT TRAFFIC STATISTICS |
STT | TYPES OF SUGAR | LENGTH(M2) |
1 |
Concrete road land |
6987 |
2 |
Dirt road |
9214 |
3 |
Slope land |
17605 |
d. Current status of water supply
- There is no water supply system in the planning area. The main water supply line D110 runs along Truong Chinh Street.
e. Current drainage status
- Currently the research area does not have a wastewater drainage system.
- Current status of waste collection: Waste collection has not been organized in the study area.
f. Current power supply status
- In the new research area, there is a high-voltage line running along Truong Chinh Street, the rest of the electricity for residential lighting is brought to each household, the main lines have not invested in main power lines.
Figure 14: Current power supply status Figure 15: Current power supply status
Table 3: Current power supply status
STATISTICAL TABLE OF CURRENT POWER SUPPLY STATISTICS |
STT | TYPES OF SUGAR | LENGTH(M) |
1 |
Low voltage power lines | 400 |
2 |
Fiber optic cable | 400 |
C. FORECASTS AND ECONOMIC-TECHNICAL INDICATORS OF THE PROJECT
1. Economic and technical indicators of the project
1.1. Population size:
Population size: 3124 people
For type IV urban areas, we choose average land expenditure per person (28-45m2 ) .
Apply the average calculation for each household for the project, each household consists of 4 people (the number of people is flexible in each plot of land but still ensures the residential land quota (28-45m2 ) .
The total projected population in the project is 3,124 people including:
+ Number of people in the villa plot: 71 plots x 4 people = 284 people.
+ Number of people in adjacent residential plots, resettlement plots, mixed housing plots:
710 lots x 4 people = 2840 people.
Total population calculated for the planning area: 284+2840=3124 people.
1.2. Technical and economic indicators:
Table 4: Technical and economic indicators
STT | CONTENT OF THE TARGET | UNIT | INDICATORS |
|---|
1 | Population indicators |
People |
3.124 |
2 | Land use indicators |
|
|
2.1 |
Urban land |
m2 / person |
28 - 45 |
2.2 |
Land for public works, commercial services |
m2 / person |
≥ 2 |
2.3 |
Green land |
m2 / person |
≥ 2 |
2.4 |
Traffic land, parking lot compared to planning land |
% |
≥ 25 |
3 | Maximum building density index |
|
|
3.1 |
Commercial service land - mixed use |
% |
≤ 60 |
3.2 |
Public works |
% |
≤ 40 |
3.3 |
Residential land, including: |
|
|
- |
Villa house |
% |
≤ 70 |
- |
Townhouse |
% |
≤ 90 |
3.4 |
Land for trees - sports; land for traffic, parking lots |
% |
≤ 5 |
4 | Maximum building height index |
Floor |
|
4.1 |
Public works land |
- |
≤ 3 |
4.2 |
Commercial-service-mixed-use building |
- |
≤ 9 |
4.3 |
Residential land, including: |
Floor |
|
- |
Villa house | - |
≤ 2 |
- |
Townhouse | - |
≤ 4 |
4.4 |
Land for trees - sports; land for traffic, parking lots |
Floor |
1 |
5 | Maximum construction land use coefficient index |
Time |
|
5.1 |
Public land for public services |
- |
≤ 1.2 |
5.2 |
Commercial-service-mixed-use building |
- |
≤ 5.4 |
5.3 |
Residential land, including: |
Time |
|
- |
Villa house | - |
≤ 1.4 |
- |
Townhouse | - |
≤ 3.6 |
6 | Technical infrastructure indicators |
|
|
6.1
6.2
6.3 |
Household electricity supply index:
- Activities:
- Service and public works: |
kw/person/year
W/person
-%(electrical load sh) |
≥ 1000
30
≥ 30 |
6.4 |
Domestic water supply indicators |
Liters/person |
≥ 100 |
6.5 |
Public water supply and service indicators |
% water SH |
≥ 10 |
6.6 |
Water supply standards for watering plants and cleaning roads |
% water SH |
≥ 8 |
6.7 |
Wastewater collection and drainage indicators |
% water supply |
≥ 80 |
6.8 |
Amount of solid waste generated |
Kg/person - day |
0.9 |
6.9 |
Solid waste collection |
% |
≥ 90 |
Maximum construction density of adjacent residential land, resettlement land, mixed residential land and villa land is calculated according to the following table:
Land area (m2 / house) |
90 |
100 |
200 |
300 |
500 |
≥1,000 |
Maximum building density (%) |
100 |
90 |
70 |
60 |
50 |
40 |
Some technical infrastructure indicators: Comply with National Technical Regulation on Construction Planning No. 01: 2021/BXD; National Technical Regulation on Technical Infrastructure No. 07: 2016/BXD and related Standards.
( Specific indicators on land use functions and scale will be accurately determined during the detailed planning process, in accordance with Vietnam Construction Standards).
D. MASTER LAND USE PLANNING, SPACE PLANNING ORIENTATION AND LANDSCAPE ARCHITECTURE ORIENTATION
1. Spatial development orientation
1.1. Planning perspective
- Update natural elevation, technical infrastructure systems of the area and surrounding areas. From there, propose designs, ensuring connection and consistency with surrounding infrastructure and landscape.
- Develop two 20.5m traffic axes and one 15.5m horizontal axis in the Northwest - Southeast direction connecting Truong Chinh street as the main axis for the commercial service area. The central axis connecting in the middle of the land is considered the commercial service axis of the area ending in a green park.
-Truong Chinh route is the main connecting route for the area as well as connecting the main axes of the area.
- The Lai Giang riverside landscape axis is the main landscape axis connecting the main axis of the residential area.
- Inside the land, the East-West routes run parallel to Truong Chinh route and the new planned route along the river. The remaining routes run perpendicular to these routes, creating residential routes, different land functions, and commercial streets that create highlights for the entire area.
- In the new residential area, create public spaces for common activities and a sub-area park combined with sports and physical training to create open spaces, living spaces for residents to create a connection point. The sub-area park combined with a sports and physical training field, the highlight and symbol of the area is located in the middle of the land, ending with the main commercial and service axis for the entire planning area.
- Along the Can River, a landscape park is arranged, combined with a walking path, and open and closed spaces for the entire Can River route. With low construction density, beautiful landscape, and a view of the Can River, the entire route along this Can River will be arranged with villa blocks that have high aesthetic and architectural value, requiring visibility, quiet space, and especially land value.
- The public space of educational land is located at the core of the land, with a service radius ensuring the entire area and surrounding neighborhoods.
- Commercial service works are located along Lai Giang river route, where there is a beautiful location, view, combined with the central park of the land, making it easy to evacuate people, and gather a large number of people when the project is put into operation.
- Technical infrastructure for wastewater drainage will be located in low-lying areas, convenient for general drainage, making the most of the existing terrain so that water supply and drainage can flow by themselves, reducing the height of buried pipes and manholes of technical infrastructure lines.
- Distribute parking evenly throughout the area, combined with green parks and public works to ensure good service.
- Religious and belief buildings focus on renovating, refurbishing, and constructing new necessary items to conform to the overall planning and completing the overall site if the site clearance process changes the function, nature of the land, fences, gates, or other functional structures.
- For the new residential area divided into lots on the DS2 route, resettlement lots will be arranged for households whose residential land area is recovered to ensure that it is within the area that needs to be resettled in accordance with local regulations.
- Plots of land along the Lai Giang river embankment are also arranged for scattered resettlement.
- Focus on organizing landscape architecture space, taking advantage of water and terrain elements in the area to organize landscape architecture space in harmony with nature.
1.2. Design principles
- Create the image of a modern, green, clean, beautiful, unique and distinctive residential service area along Lai Giang river.
- The overall planning layout creates harmonious routes, spaces, and key projects, consistent with higher-level planning.
- Organize landscape spaces in harmony with the development of construction routes, with special emphasis on main spatial axes and open spaces.
- Make the most of the terrain and available water surface space so as not to disrupt the overall landscape of the entire area.
- Apply advanced and highly effective spatial development models in investment, as well as maintain the existing natural landscape well.
- Proposing orientations for overall urban space linkage of the planning area with urban space of neighboring areas, orientations for developing high-quality ecological architecture for the area.
- Public works items in the planning area must be strictly managed in terms of red line boundaries, construction boundaries, controlled height, synchronous architecture and appropriateness to each functional area.
- Use land economically and effectively.
2. Master plan for land use
* Design ideas
The design idea is to create the image of a residential service area along Lai Giang river with characteristics and identity.
The urban service area along Lai Giang river clearly defines the spaces, the static and dynamic areas, the renovated and refurbished residential spaces, the commercial streets, the public works, the villa residential area, the open spaces in the areas, the special streets along Lai Giang river, the main highlight works, the architectural blocks, the height of the works, the view direction, ensuring...
* Land allocation solutions by function:
The indicators applied in the Detailed Planning project are consistent with the indicators in the Hoai Nhon Urban Master Plan to 2035.
- Service, commercial, public works: kindergartens, community centers, townhouses, villas:
+ Arrange a continuous traffic system connecting Truong Chinh Street and the newly planned riverside DS6 road.
+ Arrange a row of adjacent residential plots for on-site resettlement for households subject to clearance located opposite the row of houses on Truong Chinh Street.
+ Arrange small green parks in residential groups.
+ Arrange central green park area, landscape route along Lai Giang river
Residential areas are renovated, renovated, and developed on existing roads. New townhouses are built adjacent to residential areas, with a land fund reserved for on-site resettlement, new residential areas divided into plots, and commercial streets along the connecting roads from Truong Chinh Street to the riverside road. Focus on developing the commercial street in the middle of the land, ending with a central park and a highlight project for the entire area.
+ Located in the center of the commercial land is a high-rise building, the highlight of the whole area, ending the commercial street, combined with the streets along Lai Giang river to form the border for the research area.
3. Master plan of land use
- In urban structure, the first factor of concern is the main traffic network of the city. This traffic network will create the driving force for the development of the planning area, the "backbone" of the city. For example, Truong Chinh street, 20.5m roads, landscape roads along Lai Giang river, Can river.
- The functions of using land with public nature of urban, commercial and service, and specific functions are determined; the water surface system combined with green land creates the main landscape for the riverside landscape axis, at the same time combining the organization of green trees and landscape around to create a green space and beautiful landscape for the city. At the intersections of important traffic routes, priority will be given to organizing mixed-use commercial-service land and urban public works land.
- The checkerboard backbone axes are the main axes of the area. The riverside landscape line forms a soft curve that opens up circulation spaces, landscape spaces, and expands the view.
- The functions of using land of public nature of urban areas, commercial services and specific functions are determined; At the intersection areas of important traffic routes, priority will be given to organizing mixed-use commercial-service land and urban public works land.
Figure 16: Master plan of land use
Table 5: Land use structure table
LAND USE STRUCTURE TABLE |
STT | Soil type | Symbol | Land area (m2) | Rate
(%) | Maximum floor height | Maximum building density | Population of QH
(people) |
I | Residential land: |
| 117225.89 | 42.53 |
|
| 3 124 |
1.1 |
Land in current condition |
OHT | 19018.27 | 6.90 |
3 |
90 |
|
1.2 |
Newly divided land |
| 98 207.62 | 35.63 |
|
|
|
a |
Adjacent land (499 Lots) |
O |
56 233.76 |
20.40 |
4 |
90 |
|
b |
Mixed Residential Land (55 Lots) |
O-HH |
7 221.37 |
2.62 |
|
90 |
|
c |
Villa land (71 Lots) |
BT |
18 110.51 |
6.57 |
2 |
70 |
|
d |
Resettlement land (156 lots) |
O-TDC |
16 641.98 |
6.04 |
3 |
90 |
|
II | Public, commercial and service land |
| 9 836.63 | 3.57 |
| 40-60 |
|
1 |
Preschool land |
DGD | 4 664.67 |
|
3 |
|
|
2 |
Land for residential area |
NSH | 410.00 |
|
1 |
|
|
3 |
Commercial service land 1 (restaurant, conference center...) |
TMDV1 | 2 900.19 |
|
2 |
60 |
|
4 |
Commercial service land 2 (hotel, shopping center, office...) |
TMDV2 | 1 861.77 |
|
9 |
60 |
|
III | Land of religion and belief |
| 5 700.64 | 2.07 |
| 40 |
|
1 |
Religious land 1 (Ngoc Hoi pagoda) |
TG1 | 5 474.21 |
|
1 |
|
|
2 |
Religious land 1 (An Dong Temple 1) |
TN1 | 199.55 |
|
1 |
|
|
3 |
Religious land 2 (An Dong Temple 2) |
TN2 | 26.88 |
|
1 |
|
|
IV | Green land |
| 28 994.29 | 10.52 | 1 | 5 |
|
1 |
Green land isolation |
CXCL |
1 981.78 |
|
|
|
|
2 |
Green land unit |
CX |
27 012.51 |
|
|
|
|
V | Technical infrastructure land |
| 6 276.21 | 2.28 |
|
|
|
1 |
Slope land |
|
3 498.26 |
|
|
|
|
2 |
Parking lot land |
P |
2 327.95 |
|
|
|
|
3 |
Wastewater treatment plant land |
Technical Support |
450.00 |
|
|
|
|
VI | Traffic land |
| 107 576.51 | 39.03 |
|
|
|
| TOTAL |
| 275 610.17 | 100.00 |
|
|
|
LAND USE STRUCTURE TABLE OF RESIDENTIAL SERVICE AREA NO. 01 |
STT | Soil type | Symbol | Land area (m2) | Rate
(%) |
I | Residential land: |
| 53 377.39 | 34.58 |
1.1 |
Land in current condition |
OHT | 3 959.11 | 2.57 |
1.2 |
New land |
| 49 418.28 | 32.02 |
a |
Adjacent land (195 Lots) |
O |
21 621.26 |
14.01 |
b |
Mixed residential land (55 lots) |
O-HH |
7 221.37 |
4.68 |
c |
Villa land (71 Lots) |
BT |
18 110.51 |
11.73 |
d |
Resettlement land (24 lots) |
O-TDC |
2 465.14 |
1.60 |
II | Public, commercial and service land |
| 9 426.63 | 6.11 |
1 |
Preschool land |
DGD | 4 664.67 |
|
2 |
Commercial service land 1 (restaurant, conference center...) |
TMDV1 | 2 900.19 |
|
3 |
Commercial service land 2 (hotel, shopping center, office...) |
TMDV2 | 1 861.77 |
|
III | Land of religion and belief |
| 26.88 | 0.02 |
|
Religious land 2 (An Dong Temple 2) |
TN2 | 26.88 |
|
IV | Green land |
| 25 213.49 | 16.34 |
1 |
Green land isolation |
CXCL |
1 377.34 |
|
2 |
Green land unit |
CX |
23 836.15 |
|
V | Technical infrastructure land |
| 5 388.86 | 3.49 |
1 |
Slope land |
|
3 498.26 |
|
2 |
Parking lot land |
P |
1 440.60 |
|
3 |
Wastewater treatment plant land |
Technical Support |
450.00 |
|
VI | Traffic land |
| 60 910.30 | 39.46 |
| TOTAL |
| 154 343.55 | 100.00 |
SERVICE-RESIDENTIAL LAND USE STRUCTURE TABLE NO. 02 |
STT | Soil type | Symbol | Land area (m2) | Rate
(%) |
I | Residential land: |
| 63 848.50 | 52.65 |
1.1 |
Land in current condition |
OHT |
15 059.16 |
12.42 |
1.2 |
New land |
|
48 789.34 |
40.23 |
a |
Adjacent land (304 Lots) |
O |
34 612.50 |
28.54 |
b |
Resettlement land (132 lots) |
O-TDC |
14 176.84 |
11.69 |
II | Public, commercial and service land |
| 410.00 | 0.34 |
1 |
Land for residential area |
NSH | 410.00 |
|
III | Land of religion and belief |
| 5 673.76 | 4.68 |
1 |
Religious land 1 (Ngoc Hoi pagoda) |
TG1 | 5 474.21 |
|
2 |
Religious land 1 (An Dong Temple 1) |
TN1 | 199.55 |
|
IV | Green land |
| 3 780.80 | 3.12 |
1 |
Green land isolation |
CXCL |
604.44 |
|
2 |
Green land unit |
CX |
3 176.36 |
|
V | Technical infrastructure land |
| 887.35 | 0.73 |
2 |
Parking lot land |
P |
887.35 |
|
VI | Traffic land |
| 46 666.21 | 38.48 |
| TOTAL |
| 121 266.62 | 100.00 |
4. Landscape architecture space planning
- Create the image of a residential service area along Lai Giang river, with characteristics and identity.
- The architectural space layout needs to have rhythm, reasonable transitions in architectural shapes, reasonable heights between functional areas, and buildings that create highlights.
- Organize landscape spaces in harmony with the development of construction routes, with special emphasis on the main spatial axes and open spaces.
- Clearly divide the functional areas, static and dynamic areas, renovated and refurbished residential spaces, commercial streets, offices, public works, commercial service areas, restaurants, hotels, shopping centers, open spaces in the areas, special streets along Lai Giang river, open spaces, architectural shapes, building height and view direction, ensuring...
- Make the most of the terrain and available water surface space so as not to disrupt the overall landscape of the entire area.
- Apply advanced and highly effective spatial development models in investment, as well as maintain the existing natural landscape well.
- Proposing orientations for overall urban space linkage of the planning area with urban space of neighboring areas, orientations for developing high-quality ecological architecture for the area.
- Public works items in the planning area must be strictly managed in terms of red line boundaries, construction boundaries, controlled height, synchronous architecture and appropriateness to each functional area.
- Use land economically and effectively.
Figure 17: Landscape architecture space layout map
5. Urban design
5.1. Design principles
Identify key projects in the planning area according to vision directions
- Specify key projects identified from the general planning, zoning planning, shape the architectural design of the project to suit the nature of use and create good perception.
- In case the highlight is not an architectural work, but uses landscape space as the highlight, it is necessary to specify the trees, water surface, natural and artificial terrain.
Determine the height of the building
- Organize space and height for the entire study area and specifically for each plot of land.
- Determine the height of the building based on compliance with construction regulations and standards, in accordance with the construction density and landscape, trees, and water surface in the urban area as specified in the general planning.
Determine building setbacks on each street and intersection.
- Determine specific setbacks for architectural works on each street and intersection; propose feasible solutions to correct existing urban shortcomings by: planting additional trees, building awnings along sidewalks, or by other technical measures.
- Propose a setback to create closed/open spaces using design options based on current conditions and solutions to enrich the landscape architecture space, ensuring convenience in exploitation and use.
- Determining the minimum setback of a building must comply with zoning plans, current construction regulations and standards.
Determine the main shapes, colors, and architectural forms of architectural works
* For architectural shapes
+ Determine the volume of constructions by solution: block or disperse.
+ Propose solutions for iconic and sculptural architecture.
* For the main architectural form
+ Proposed main architectural form is modern architecture or architecture combined with tradition; sloping roof or flat roof architecture, elevation of floors, door form, balcony, loggia.
+ Propose mandatory regulations for other small structures regarding: size and form of advertising signs attached to the project.
+ The main color of the architectural work must be consistent with the nature and history of the urban area, the natural landscape of the area, the customs and perceptions of the local people about materials and colors.
5.2. Urban design solutions
a. Urban design spatial organization structure
The regional structure is determined according to the model of a modern urban area with its own characteristics associated with the natural terrain, creating a dynamic, diverse and attractive living, working and studying environment. The functional areas are closely linked by the main traffic system and the continuous green space network. The functional areas form clusters with a green tree and water surface system connected to the main landscape axis by main works. The functional areas are linked together by inter-regional walking routes. This structure aims to limit mechanical activities deep into the main spaces, preserve the natural ecological structure and at the same time create a modern and harmonious learning space.
b. Construction density
Construction must ensure the preservation and enhancement of natural landscapes. Create a green tree system that harmonizes with the constructions to create landscapes and improve the ecological environment in the area.
The blocks are designed in a modern language, developed from basic square shapes with areas calculated to be sufficient for necessary functions.
The highlight project is located in the middle of the research area, ending the main axis, the commercial axis of the residential service area along Lai Giang river, is a commercial project that creates a highlight for the entire area to create an architectural highlight when viewed from the main traffic directions, the residential blocks combined with commerce form an arch shape creating a border, the spaces open and close continuously.
The tallest building is located near the South of the land, the 9-storey commercial service building forms a tower as the main symbol of the southern commercial service area close to DS6 road, combined with low-rise commercial service buildings and then the central park, creating an architectural highlight when viewed from the main traffic directions, an urban border.
Maximum building density: The total building density of the entire residential unit is 60%.
+ High-rise commercial service buildings with maximum construction density ≤ 60%;
+ Kindergarten construction maximum construction density ≤ 40%;
+ Religious and belief buildings maximum construction density ≤ 40%;
+ Residential block building construction with maximum construction density ≤ 40%;
+ Mixed-use residential projects, adjacent to maximum construction density ≤ 90%;
+ Villa housing projects with maximum construction density ≤ 70%;
Table 6: (For individual housing projects, construction density is according to the following table)
Land area (m2 / house) |
90 |
100 |
200 |
300 |
500 |
≥1,000 |
Maximum building density (%) |
100 |
90 |
70 |
60 |
50 |
40 |
+ Public works in parks and auxiliary works, technical infrastructure maximum construction density ≤ 5%;
+ Small architectural works, miniature landscapes, welcome gates, etc. construction density ≤ 5%;
* Construction density for residential land calculated for each resettlement plot, townhouse, mixed residential land and villa land:
Table of statistics of maximum construction density for each plot of land |
STT | Plot statistics | Area (m2) | Maximum construction density (%) |
| Adjacent land O1-TDC |
|
|
1 |
O1-01 |
135.7 |
82.9 |
2 |
O1-02 to O1-14 |
100 |
90.0 |
3 |
O1-15 |
107.8 |
88.4 |
4 |
O1-16 |
112.2 |
87.6 |
5 |
O1-17 |
113.8 |
87.3 |
6 |
O1-18 |
102.2 |
89.6 |
7 |
O1-19 to O1-25 |
100 |
90.0 |
8 |
O1-26 |
128.5 |
84.3 |
9 |
O1-27 to O1-29 |
113.8 |
87.4 |
10 |
O1-30 |
149.2 |
80.2 |
11 |
O1-31 |
112.5 |
87.5 |
12 |
O1-32 |
119.3 |
86.1 |
13 |
O1-33 |
126.5 |
84.7 |
| Land adjacent to O2 |
1 |
O2-01 |
146.87 |
80.6 |
2 |
O2-02 |
111.1 |
87.8 |
3 |
O2-03 |
118.44 |
86.3 |
4 |
O2-04 |
107.35 |
88.5 |
5 |
O2-05 |
112.74 |
87.5 |
6 |
O2-06 |
118.13 |
86.4 |
7 |
O2-07 |
102.56 |
89.5 |
8 |
O2-08 |
106.3 |
88.7 |
9 |
O2-09 |
110.04 |
88.0 |
10 |
O2-10 |
113.78 |
87.2 |
11 |
O2-11 |
117.52 |
86.5 |
12 |
O2-12 |
121.27 |
85.7 |
13 |
O2-13 |
125 |
85.0 |
14 |
O2-14 |
116.74 |
86.7 |
15 |
O2-15 |
120.43 |
85.9 |
16 |
O2-16 |
123.27 |
85.3 |
17 |
O2-17 |
124.73 |
85.1 |
18 |
O2-18 |
124.99 |
85.0 |
19 |
O2-19 to O2-25 |
125 |
85.0 |
20 |
O2-26 |
145.95 |
80.8 |
21 |
O2-27 to O2-29 |
132 |
83.6 |
22 |
O2-30 |
162.5 |
77.5 |
23 |
O2-31 to O2-45 |
125 |
85.0 |
24 |
O2-46 to O2-60 |
110 |
88.0 |
25 |
O2-61 |
104.66 |
89.1 |
| Adjacent land O3-TDC |
1 |
O3-01 |
144.04 |
81.2 |
2 |
O3-02 |
110.36 |
87.9 |
3 |
O3-03 |
104.97 |
89.0 |
4 |
O3-04 to O3-05 |
100 |
90.0 |
5 |
O3-06 |
112 |
87.6 |
6 |
O3-07 to O3-21 |
102 |
89.6 |
7 |
O3-22 |
114.23 |
87.2 |
8 |
O3-23 |
132.2 |
83.6 |
9 |
O3-24 |
129.34 |
84.1 |
10 |
O3-25 |
131.03 |
83.8 |
11 |
O3-26 to O3-45 |
100 |
90.0 |
12 |
O3-46 |
174.58 |
75.1 |
13 |
O3-47 |
178.22 |
74.4 |
14 |
O3-48 to O3-49 |
126 |
84.8 |
15 |
O3-50 to O3-52 |
105 |
89.0 |
16 |
O3-53 |
129.98 |
84.0 |
17 |
O3-54 |
118.3 |
86.3 |
18 |
O3-55 |
108.38 |
88.3 |
19 |
O3-56 |
107.75 |
88.5 |
| Adjacent land O4 |
1 |
O4-01 |
117.5 |
86.5 |
2 |
O4-02 to O4-15 |
100 |
90.0 |
3 |
O4-16 |
111.79 |
87.6 |
4 |
O4-17 to O4-30 |
100 |
90.0 |
5 |
O4-31 |
117.5 |
86.5 |
| Adjacent land O5-TDC |
1 |
O5-01 |
200.42 |
70.0 |
2 |
O5-02 |
108.25 |
88.4 |
3 |
O5-03 |
98.23 |
91.8 |
4 |
O5-04 |
105.51 |
88.9 |
5 |
O5-05 |
112.8 |
87.4 |
6 |
O5-06 |
120.08 |
86.0 |
7 |
O5-07 |
127.37 |
84.5 |
8 |
O5-08 |
134.65 |
83.1 |
9 |
O5-09 |
166.60 |
76.7 |
10 |
O5-10 |
160.48 |
77.9 |
11 |
O5-11 to O5-18 |
100 |
90.0 |
12 |
O5-19 |
125.69 |
84.9 |
13 |
O5-20 |
122.13 |
85.6 |
14 |
O5-21 to O5-26 |
115 |
87.0 |
15 |
O5-27 |
126.5 |
84.7 |
16 |
O5-28 |
136 |
82.8 |
17 |
O5-29 to O5-32 |
132 |
83.6 |
| Adjacent land O6 |
1 |
O6-01 |
142 |
81.6 |
2 |
O6-02 to O6-09 |
112.5 |
87.5 |
3 |
O6-10 |
164.61 |
77.1 |
4 |
O6-11 |
116.84 |
86.6 |
5 |
O6-12 |
115.85 |
86.8 |
6 |
O6-13 |
114.86 |
87.0 |
7 |
O6-14 |
129.21 |
84.2 |
8 |
O6-15 to O6-28 |
110 |
88.0 |
9 |
O6-29 |
119.5 |
86.1 |
10 |
O6-30 to O6-32 |
100 |
90.0 |
| Adjacent land O7 |
1 |
O7-01 |
104.02 |
89.2 |
2 |
O7-02 |
106.62 |
88.7 |
3 |
O7-03 |
115.12 |
87.0 |
4 |
O7-04 |
121.95 |
85.6 |
5 |
O7-05 to O7-10 |
105 |
89.0 |
6 |
O7-11 |
147.58 |
80.5 |
7 |
O7-12 |
129.11 |
84.2 |
8 |
O7-13 |
110.79 |
87.8 |
9 |
O7-14 |
106.23 |
88.8 |
10 |
O7-15 |
102.62 |
89.5 |
11 |
O7-16 |
100.58 |
89.9 |
12 |
O7-17 to O7-42 |
100 |
90.0 |
13 |
O7-43 |
160.96 |
77.8 |
| Adjacent land O8 |
1 |
O8-01 |
113.91 |
87.2 |
2 |
O8-02 |
135.66 |
82.9 |
3 |
O8-03 |
120.61 |
85.9 |
4 |
O8-04 |
114.34 |
87.1 |
5 |
O8-05 |
146.11 |
80.8 |
6 |
O8-06 |
116.63 |
86.7 |
7 |
O8-07 |
122.67 |
85.5 |
8 |
O8-08 |
106.84 |
88.6 |
9 |
O8-09 |
111.04 |
87.8 |
10 |
O8-10 |
143.22 |
81.4 |
11 |
O8-11 to O8-28 |
100 |
90.0 |
12 |
O8-29 |
108.1 |
88.4 |
13 |
O8-30 to O8-32 |
108 |
88.4 |
| Adjacent land O9 |
1 |
O9-01 |
159.68 |
78.1 |
2 |
O9-02 to O9-12 |
100 |
90.0 |
3 |
O9-13 |
102 |
89.6 |
4 |
O9-14 to O9-16 |
115 |
87.0 |
5 |
O9-17 |
107 |
88.6 |
6 |
O9-18 to O9-26 |
100 |
90.0 |
7 |
O9-27 |
155.2 |
79.0 |
| Adjacent land O10 |
1 |
O10-01 |
132 |
83.6 |
2 |
O10-02 to O10-12 |
120 |
86.0 |
3 |
O10-13 |
132 |
83.6 |
4 |
O10-14 to O10-18 |
100 |
90.0 |
5 |
O10-19 |
152 |
79.6 |
6 |
O10-20 to O10-30 |
120 |
86.0 |
7 |
O10-31 |
132 |
83.6 |
| Adjacent land O11 |
1 |
O11-01 |
122.5 |
85.5 |
2 |
O11-02 to O11-22 |
105 |
89.0 |
3 |
O11-23 |
118 |
86.4 |
4 |
O11-24 to O11-26 |
105 |
89.0 |
5 |
O11-27 |
128.5 |
84.3 |
6 |
O11-28 to O11-54 |
117.5 |
86.5 |
7 |
O11-55 |
163.75 |
77.3 |
8 |
O11-56 to O11-58 |
112.5 |
87.5 |
| O12-HH mixed soil |
1 |
O12HH-01 |
171.19 |
75.8 |
2 |
O12HH-02 |
168.48 |
76.3 |
3 |
O12HH-03 |
140 |
82.0 |
4 |
O12HH-04 to O12HH-06 |
120 |
86.0 |
5 |
O12HH-07 |
165.41 |
76.9 |
| Adjacent land O13 |
1 |
O13-01 |
177.36 |
74.5 |
2 |
O13-02 to O13-15 |
100 |
90.0 |
| O14-HH mixed soil |
1 |
O14HH-01 |
164.48 |
77.1 |
2 |
O14HH-02 to O14HH-13 |
120 |
86.0 |
3 |
O14HH-14 |
139 |
82.2 |
4 |
O14HH-15 to O14HH-18 |
126 |
84.8 |
5 |
O14HH-19 |
181 |
73.8 |
| Mixed residential land O15-HH |
1 |
O15HH-01 |
128.65 |
84.3 |
2 |
O15HH-02 |
109.8 |
88.0 |
3 |
O15HH-03 |
113.21 |
87.4 |
4 |
O15HH-04 to O15HH-08 |
120 |
86.0 |
5 |
O15-09 |
130.81 |
83.8 |
| Mixed residential land O16-HH |
1 |
O16HH-01 |
151.98 |
79.6 |
2 |
O16HH-02 to O16HH-14 |
120 |
86.0 |
3 |
O16HH-15 |
164.63 |
77.1 |
4 |
O16HH-16 |
133.2 |
83.4 |
5 |
O16HH-17 |
136.82 |
82.6 |
6 |
O16HH-18 |
140.79 |
81.8 |
7 |
O16HH-19 |
145.11 |
81.0 |
8 |
O16HH-20 |
192.81 |
71.4 |
| Adjacent land O17 |
1 |
O17-01 |
115.36 |
86.9 |
2 |
O17-02 |
118.76 |
86.2 |
3 |
O17-03 |
155.68 |
78.9 |
4 |
O17-04 to O17-17 |
100 |
90.0 |
| Adjacent land O18-TDC |
1 |
O18-01 |
111.08 |
87.8 |
2 |
O18-02 |
109.9 |
88.0 |
3 |
O18-03 |
137.07 |
82.6 |
4 |
O18-04 to O18-23 |
100 |
90.0 |
5 |
O18-24 |
107.09 |
88.6 |
| Adjacent land O19 |
1 |
O19-01 |
169.74 |
76.1 |
2 |
O19-02 to O19-23 |
100 |
90.0 |
3 |
O19-24 |
175.17 |
75.0 |
4 |
O19-25 |
129.09 |
84.2 |
5 |
O19-26 |
122.66 |
85.5 |
6 |
O19-27 |
146.22 |
80.8 |
7 |
O19-28 to O19-46 |
100 |
90.0 |
8 |
O19-47 |
131.93 |
83.6 |
| Adjacent land O20 |
1 |
O20-01 |
167.73 |
76.5 |
2 |
O20-02 |
112.26 |
87.5 |
3 |
O20-03 to O20-20 |
112.2 |
87.6 |
4 |
O20-21 |
112.26 |
87.5 |
5 |
O20-22 |
112.32 |
87.5 |
6 |
O20-23 |
129.82 |
84.0 |
7 |
O20-24 |
124.83 |
85.0 |
8 |
O20-25 to O20-43 |
110 |
88.0 |
9 |
O20-44 |
132 |
83.6 |
10 |
O20-45 to O2-57 |
110 |
88.0 |
11 |
O20-58 |
163.55 |
77.3 |
| Adjacent land O21 |
1 |
O21-01 |
113.9 |
87.2 |
2 |
O21-02 |
114.71 |
87.1 |
3 |
O21-03 |
111.71 |
87.7 |
4 |
O21-04 |
114.43 |
87.1 |
5 |
O21-05 to O21-10 |
115.03 |
87.0 |
6 |
O21-11 |
114.32 |
87.1 |
7 |
O21-12 |
115.13 |
87.0 |
8 |
O21-13 to O21-21 |
114.71 |
87.1 |
9 |
O21-22 |
113.42 |
87.3 |
10 |
O21-23 |
113.98 |
87.2 |
11 |
O21-24 |
111.05 |
87.8 |
12 |
O21-25 to O21-43 |
112.5 |
87.5 |
13 |
O21-44 |
135 |
83.0 |
14 |
O21-45 to O21-57 |
112.5 |
87.5 |
15 |
O21-58 |
167.51 |
76.5 |
Table of statistics of maximum construction density for each plot of land |
|
STT | Plot statistics | Area (m2) | Maximum construction density (%) |
|
| Land for villa BT1 |
|
|
|
1 |
BT1-01 |
256.87 |
64.3 |
|
2 |
BT1-02 |
229.38 |
67.1 |
|
3 |
BT1-03 |
210.78 |
68.9 |
|
4 |
BT1-04 |
207 |
69.3 |
|
5 |
BT1-05 |
229.19 |
67.1 |
|
6 |
BT1-06 |
242.86 |
65.7 |
|
7 |
BT1-07-08 |
200 |
70.0 |
|
8 |
BT1-09 |
252 |
64.8 |
|
9 |
BT1-10-11 |
220 |
68.0 |
|
10 |
BT1-12 |
240 |
66.0 |
|
|
| Land for villa BT2 |
|
1 |
BT2-01 |
393.17 |
55.3 |
|
2 |
BT2-02 |
281.57 |
61.8 |
|
3 |
BT2-03 |
278.28 |
62.2 |
|
4 |
BT2-04 |
289.07 |
61.1 |
|
5 |
BT2-05 |
278.88 |
62.1 |
|
6 |
BT2-06 |
276.35 |
62.4 |
|
7 |
BT2-07 |
274.35 |
62.6 |
|
8 |
BT2-08 |
272.88 |
62.7 |
|
9 |
BT2-09 |
271.94 |
62.8 |
|
10 |
BT2-10 |
271.52 |
62.8 |
|
11 |
BT2-11 |
271.63 |
62.8 |
|
12 |
BT2-12 |
272.25 |
62.8 |
|
13 |
BT2-13 |
276.45 |
62.4 |
|
14 |
BT2-14-15 |
270 |
63.0 |
|
15 |
BT2-16 |
269.7 |
63.0 |
|
16 |
BT2-17 |
266.81 |
63.3 |
|
17 |
BT2-18 |
261.85 |
63.8 |
|
18 |
BT2-19 |
255.11 |
64.5 |
|
29 |
BT2-20 |
246.57 |
65.3 |
|
20 |
BT2-21 |
236.24 |
66.4 |
|
21 |
BT2-22 |
224.1 |
67.6 |
|
22 |
BT2-23 |
250.32 |
65.0 |
|
23 |
BT2-24 |
227.04 |
67.3 |
|
24 |
BT2-25 |
250.93 |
64.9 |
|
25 |
BT2-26 |
225.88 |
67.4 |
|
26 |
BT2-27 |
210.85 |
68.9 |
|
27 |
BT2-28 |
272.07 |
62.8 |
|
27 |
BT2-29 |
260.74 |
63.9 |
|
29 |
BT2-30 |
219.38 |
68.1 |
|
30 |
BT2-31-32 |
220 |
68.0 |
|
31 |
BT2-33 |
240 |
66.0 |
|
32 |
BT2-34-35 |
220 |
68.0 |
|
33 |
BT2-36 to BT2-46 |
260 |
64.0 |
|
34 |
BT2-47 |
261.46 |
63.9 |
|
35 |
BT2-48-49-50 |
266.02 |
63.4 |
|
36 |
BT2-51 |
265.42 |
63.5 |
|
37 |
BT2-52 |
265.36 |
63.5 |
|
38 |
BT2-53-54-55-56 |
266.36 |
63.4 |
|
39 |
BT2-57 |
265.42 |
63.5 |
|
40 |
BT2-58 |
265.36 |
63.5 |
|
41 |
BT2-59 |
312.45 |
58.8 |
|
|
|
|
|
|
|
|
|
|
c . Building height
The building height is arranged from 1 to 9 floors, specifically as follows:
+ The tallest building is the Commercial Block located in the South of the land, adjacent to DS6 road along Lai Giang river, approaching the main traffic axis, becoming a highlight for the entire area, with a maximum height of 9 floors;
+ School buildings are up to 3 floors high;
+ Block activity building with maximum 1 floor;
+ Townhouses and mixed-use buildings with a maximum height of 4 floors;
+ Villa housing project with maximum height of 2 floors;
+ Public works in parks and auxiliary, 1-storey high technical infrastructure;
+ Small architectural works, miniature landscapes, welcome gates... maximum height of 1 floor;
d. Building setbacks and access
Building blocks are arranged based on basic setback levels (calculated from the red line):
Construction boundaries for adjacent and mixed residential lots coincide with the edge of the sidewalk.
Setback for commercial service buildings and housing:
+ Setback of 6.0 m from the red line for commercial service buildings.
+ Setback of 3.0 m from the red line for residential block buildings.
+ 2m setback behind for townhouses, villas, mixed-use buildings.
+ 3m front setback for villa housing projects.
Setback for public works:
+ Setback distance of 6.0m from the red line for school buildings ( except for kiosks and auxiliary works such as garages, guard houses, gates, signs, transformer stations, non-fixed sub-works...: setback distance may coincide with the red line ).
e. Land use coefficient:
+ Commercial and service buildings with maximum land use coefficient of 5.4 times
+ School buildings have a maximum land use coefficient of 1.2 times.
+ Block activity house project with maximum land use coefficient of 0.4 times
+ Religious and belief works, maximum land use coefficient 0.4 times
+ Townhouses, mixed-use housing, maximum land use coefficient 3.6 times;
+ Villa housing project with land use coefficient of 1.4 times;
+ Park projects in the sub-area have land use coefficient of 0.05 times;
(Maximum land use coefficient for individual houses is not more than 7 times)
f . Green space system
The green space is designed based on the idea of interweaving nature and urban areas. By utilizing green space according to the surrounding zoning plan, the design aims to closely connect green spaces inside and outside the land, creating a connection that extends throughout the entire length of the area.
|
Figure 18 : Illustration of landscape organization along the river |
|
Figure 19 : Illustration of landscape organization along the river
g . Illustration of spaces
Figure 20 : Entrance to the urban area
Figure 21 : Commercial service building
|
Figure 22 : Commercial service building |
|
Figure 23 : Residential projects: villas and townhouses
|
h . Street illustration :
|
|
Figure 24 : Standing facing the street
Figure 25. Ideas for transforming embankment lines into landscape lines |
i . Perspective illustration
Figure 26 : Overall perspective
E. TECHNICAL INFRASTRUCTURE SYSTEM PLANNING
1. Traffic
1.1. Standards and regulations
-
Vietnam Construction Planning Standards QCVN 01:2021/BXD;
-
National technical regulation on traffic works QCVN07-4:2016/BXD;
-
Survey map of the design area at scale 1/500;
1.2. Red line boundary, construction boundary
Within the planning scope, only red line boundaries and construction boundaries are determined for urban traffic routes adjacent to the planning area.
Details of planning red line boundaries, construction boundaries see planning drawings
1.3. Road classification, design scale
- External traffic: Connecting with Truong Chinh street at 5 points in the North, connecting with Lai Giang river road at 7 points in the South.
- Internal traffic routes within the planning area and related to the road section planning area are as follows:
+ Section 1-1: B = 5.0m+10.5+5.0m = 20.5m
+ Section 2A-2A: B = 6.0m+14.0m+6.0= 24.0m
+ Section 2B-2B: B = 4.0m+14.0m+6.0m-9.0m= 24.0m-27.0m
+ Section 3A-3A, 3B-3B: B = 5.0m+9.0m+4.0m= 18.0 m
+ Section 4-4; 4A-4A; 4B-4B; 4C-4C; 4D-4D;4E-4E:B = 4.0m+7.5m+4.0m= 15.5 m
a. Original design:
- The road network is designed based on existing routes for renovation, closely following the actual terrain.
- Determine the regional dividing lines connecting residential areas in the planning area. Regional routes divide the study area into different functional areas, creating the best conditions for dividing investment phases, forming complete residential areas and functional areas that play the role of inter-regional connections.
- Regional routes are routes of each functional area, playing a connecting role with main routes and regional roads.
- Internal routes are designed to arrange technical infrastructure and best exploit land funds according to function.
- Comply with approved master plan, zoning plan, take advantage of natural terrain for construction. Build traffic system and synchronize technical infrastructure connection with neighboring areas.
b. Design solution:
- On the basis of connecting main roads, opening roads running parallel and perpendicular to Truong Chinh axis and Lai Giang riverside landscape in compliance with the general planning, zoning planning based on the current terrain to draw routes, organize a checkerboard network for the main road system.
- Technical specifications of routes:
+ Minimum curve radius with terrain Rmin = 60 m
+ Road slope i min = 0.1%, i max = 0.3%,
+ Turning radius at normal intersections R= 20m.
+ Cross slope of road i = 2%, pavement slope of road i = 2%.
c. Plan, design scale and geometric elements:
* Line diagram:
The quantity and route plan are arranged to satisfy the following requirements:
- Capable of meeting freight transport needs.
- Ensure that necessary technical factors are applied in current processes and regulations.
- Reasonable in terms of route direction, suitable for natural terrain and current technical infrastructure status.
* Road structure:
- The road network in the urban area needs to be built with a beautiful and durable standard pavement structure. It is expected to choose a high-class A1 pavement.
- To ensure the road surface reaches the minimum elastic modulus, the planned pavement structure is as follows:
+ For cross-sections 1-1, 2A-2A, 2B-2B: (including symbols through each boundary segment)
Eyc ≥ 120 Mpa (Section 2-2). The structure of the pavement layers from top to bottom is as follows:
+ 5cm Fine grain dense asphalt concrete (BTNC 12.5)
+ 7cm Medium-grained dense asphalt concrete (BTNC 19)
+ 30cm Grade 1 crushed stone (Dmax25)
+ Compacted soil K98 50cm thick
+ For cross-sections of roads 3A-3A, 3B-3B 4-4, 4A-4A, 4B-4B, 4C-4C, 4D-4D, 4E-4E (including symbols through each boundary segment)
Eyc ≥ 100 Mpa (Remaining cross-sections). The structure of the pavement layers from top to bottom is as follows:
+ 7cm Fine grain dense asphalt concrete (BTNC 12.5)
+ 30cm Grade 1 crushed stone (Dmax25)
+ Compacted soil K98 50cm thick
d. Traffic intersections : The intersections of internal roads in the planning area are designed at the same level in a simple form with a curb radius R curb = 8-:-12m. On the basis of ensuring safe visibility and turning radius for vehicles when traveling in the intersection with a calculated speed of V = 15 km/h.
1.4. Summary table of construction volume of traffic items
Table 7: Statistics of traffic route length
TRAFFIC STATISTICS TABLE |
|
STT | Cross section | Length (m) | Road clearance (m) |
|
|
|
1 |
1 – 1 |
413.7 |
20.5 |
|
2 |
2A – 2A, 2B-2B |
1312.6 |
24.0-27.0 |
|
3 |
3A – 3A, 3B-3B |
657.16 |
18.0 |
|
4 |
4 – 4, 4A-4A, 4B-4B, 4C-4C, 4D-4D, 4E-4E |
1712.95 |
15.5 |
|
TOTAL | 4096.41 |
|
|
2. Leveling and drainage
2.1. Basis for designing leveling ground
-
Vietnam Construction Planning Standards QCVN01:2021/BXD;
-
National technical regulation QCVN07:2016/BXD;
-
Survey map of the design area at scale 1/500;
2.2. Characteristics and solutions for leveling the ground
Comply with the main orientation of the general urban planning project of Hoai Nhon, Binh Dinh province to 2035, the zoning plan of Bong Son ward. In the planning area with relatively flat terrain, the current ground is an area for growing perennial trees, crops, etc., so this area is mainly for transporting soil for filling. The design elevation of the ground leveling ensures the following technical factors:
+ Main drainage direction: towards Can River located in the Northwest
+ The design elevation of the ground leveling must be consistent with the current elevation of the residential area. The lowest natural elevation is +1.21m, the highest natural elevation is +11.82m. The lowest design elevation is +8.12m, the highest design elevation is +11.25m.
+ The slope of the ground in the lot ensures minimum self-drainage i=0.003%
+ Drainage direction from the foundation of the plots of land towards the common drainage system located along the traffic network, then discharged into the dry river, Lai Giang river through the discharge gates.
- For green areas, choose suitable ground elevation
- The volume of leveling to create the ground is at the same time as leveling the traffic foundation.
Expected source of land for filling: the source of land for filling is hilly land outside the planning area, in Hoai Nhon Town area.
2.5. Weight:
- Volume of embankment and slope
- Based on the natural elevation and design elevation in the land area, the volume of fill can be calculated.
2.6. Summary of volume and cost estimate:
Table 8: Estimated volume of leveling
ESTIMATES OF GROUND LEVELING COSTS |
STT | CONTENT | VOLUME (m3) |
1 |
Filling soil |
268153 |
2.7 Rainwater drainage
2.7.1. Standards applied in design:
a. Design standards:
-
Vietnam Construction Planning Standards QCVN01:2021/BXD;
-
National technical regulation QCVN07:2016/BXD;
-
Survey map of the design area at scale 1/500;
b. Drainage plan:
- The roads in the planning area are arranged with separate rainwater and wastewater drainage systems. Rainwater will be collected into the drainage system located along both sides of the road and both sides of the sidewalk and then discharged into Lai Giang River and Can River.
- The DS6 route along the Lai Giang River is designed with manholes to collect water, then transfer it to the road through an underground sewer system and connect to the drainage system located inside.
2.7.2.Solutions for designing rainwater drainage network
Based on the ground leveling plan along the roads, centrifugal concrete sewers are arranged, D400, D600 to D1200, B1600. The rainwater drainage system is arranged on the sidewalk. Rainwater is collected from the road surface at the edge of the curb leading to the water intake at the manhole, self-flowing and then discharged into the main drainage network.
2.7.3.Technical parameters and calculation formula:
a..Technical parameters:
-
Overflow cycle P=1 to 2 years for vertical sewers in residential areas
-
Overflow cycle P=10 years for regional sewers
-
Minimum bottom flow velocity v=0.7m/s
-
Average flow concentration coefficient y = 0.8.
2.7.4.Calculation method and formula:
a. Calculation method: Limit strength method
b. Calculation formula:
* Rainwater drainage:
Q m = q . φ . F . g
In there:
Q m : Calculated rainwater flow (l/s)
φ : Flow coefficient
F: Calculated basin area (ha)
g : Rainfall coefficient (F < 300 ha g = 1)
q: Calculated rainfall intensity (l/s/ha) in Hoai Nhon area
Rainfall intensity is calculated as follows:
In there:
b=14.61
C=0.2745
n=0.6943
q 20 =216.3
P=1 to 10 years
F: calculated basin area (ha)
Or calculate by general formula:
Rainfall intensity calculated by volume is the amount of rain falling in l/s.ha
In which: h: Rainwater layer height (mm)
T: Rain time (minutes)166.7: \
Conversion factor for rainfall intensity calculated by water layer to rainfall intensity calculated by volume.
* Wastewater flow: Q b = q 0 .F.Kc (l/s)
In there:
q 0 : Average wastewater flow (l/s.ha)
F : Calculation basin (ha)
Kc: General non-harmonic coefficient
* General drainage system flow: Q= Q m + Q b
c. Check the drainage capacity of the sewer:
Apply the following formula:
Q = velocity x C (m3/s)
In there:
Q: Sewer flow
ãc : Wet cross-sectional area of the sewer
wc = BxHtkb where Htk is the height of the water column in the sewer
R : Hydraulic radius, R=ãc/X
I: Slope of sewer bottom
n: Roughness coefficient of sewer material n=0.014 (concrete)
C: Sezy coefficient, determined by the formula:
y = 2.5 x(n) 0.5 - 0.13 - 0.75 x ((n) 0.5 - 0.1)
2.7.5. Summary of volume and estimate of rainwater drainage costs.
Table 9: Calculation of volume and construction cost of rainwater drainage project
TT |
CONTENT |
SIZE |
MASS |
I |
RAIN WATER DRAINAGE |
(mm) |
(m) |
1 |
BTLT PIPE |
D400 |
240 |
2 |
BTLT PIPE |
D600 |
7127 |
3 |
BTLT PIPE |
D800 |
1879.81 |
4 |
BTLT PIPE |
D1000 |
514.85 |
5 |
BTLT PIPE |
D1200 |
231.24 |
6 |
concrete sewer |
B1600 |
70 |
II |
TECHNICAL MANHOLE |
|
FEMALE |
1 |
manhole |
1000x1000 |
387 |
2 |
manhole |
1600x1600 |
109 |
3 |
manhole |
2000x2000 |
5 |
3. Water supply
3.1. Design basis
- The planning area does not have a water supply system.
- The current status is the existing pipeline D110 along the current status road Truong Chinh.
3.2. Water supply standards and water demand
-
Vietnam Construction Planning Standards QCVN01:2021/BXD;
-
National technical regulation QCVN07:2016/BXD;
Current map of the research area at scale 1/500.
Detailed planning map of total land use
Approved planning maps of neighboring residential areas.
Standards and regulations on water supply and operation of water supply systems.
Other related documents..
a. Water supply standards
- Water usage standards: Domestic water usage standards in urban areas are selected according to TCVN 33:2006, QCXDVN 01: 2021/BXD and QCXD 07: 2016 specifically:
+ Water supply for daily life (Q1): 100 l/person.day
+ Public works (Q2): 3 l/m2.floor
+ Commerce, services, tourism (District 3): 3 l/m2.floor
+ Wastewater treatment plant (Q4): 5% (Q1+Q2+Q3).
+ Watering plants (Q5): 4 l/m.time
+ Road cleaning water (Q6): 0.5l/m2.time
+ Leakage loss: 10% (Q1+Q2+Q3+Q4+Q5+Q6).
+ Fire water supply: 10 l/s
b. Water demand
Table 10 – Water demand calculation table
STT | Public works | Population
(people) | Water supply standards | Unit | Domestic water flow |
(m3/day) |
1 |
Domestic water supply |
3124 |
150 |
l/ng.ngđ |
468.60 |
2 |
Public works |
|
10% |
l/ng.ngđ |
46.86 |
3 |
Trade, services, tourism |
|
10% |
l/m2.floor |
46.86 |
4 |
Wastewater treatment plant |
|
5% |
|
28.12 |
5 |
Leakage, loss |
|
10% (Q1+Q2+Q3+Q4) |
|
59.04 |
6 |
Qday, average (m3/day) |
|
|
|
649.48 |
7 |
Qngay,max (m3/day) |
|
1.2 |
|
779.38 |
8 |
Qhour,max (m3/h) |
|
1.5 |
|
48.71 |
3.3. Water source
- Use clean water from water supply plant No. 2 of Binh Dinh Water Supply and Drainage Joint Stock Company connected to clean water supply pipeline D110 located on Truong Chinh Street, Northwest of the project ( connection location see water supply planning drawing)
- Total water demand 649.48 m3/day-night.
- Main pipeline network has diameter D160- D110.
- Branch pipe network with diameter D63.
+ Hydraulic calculation of water supply network:
-
Calculated length of pipe sections: L tt = L th m. In which, L th is the actual length of the pipe section; m = 1 when the pipe section serves 2 sides, m = 0.5 when the pipe section serves 1 side and m = 0 when the pipe section is transported (across river, via railway...).
Table 11: Calculated length for pipe sections
STT |
Pipe section |
l tte (m) |
m |
l tt (m) |
1 |
01--02 |
2.6 |
0 |
0 |
2 |
02--03 |
75.4 |
1 |
75.4 |
3 |
03--04 |
184.0 |
1 |
184 |
4 |
04--05 |
372.0 |
1 |
372 |
5 |
05--06 |
388.0 |
1 |
388 |
6 |
04--06 |
123.0 |
1 |
123 |
7 |
06--07 |
219.0 |
1 |
219 |
8 |
07--08 |
179.0 |
1 |
179 |
9 |
03--08 |
198.0 |
1 |
198 |
10 |
08--09 |
227.0 |
1 |
227 |
11 |
09--10 |
139.0 |
1 |
139 |
12 |
07--10 |
216.0 |
1 |
216 |
13 |
10--11 |
23.0 |
1 |
23 |
14 |
11--12 |
298.0 |
1 |
298 |
15 |
12--13 |
18.0 |
1 |
18 |
16 |
13--14 |
301.7 |
1 |
301.7 |
17 |
14--15 |
8.3 |
0 |
0 |
18 |
15--01 |
846.1 |
0 |
0 |
Total |
|
|
|
2961.1 |
-
Traffic of the concentrated nodes: Based on the mapped network, we can determine the concentrated points.
-
Unit flow rate along the road: q dv = . In which, q dv [l/ms] is the unit flow rate along the road; [l/s] is the water flow rate during the hour of maximum water use; ∑Q ttr [l/s] is the total concentrated flow rate during the hour of maximum water use; ∑L tt [m] is the total calculated length of the entire network.
-
Flow along the route of each pipe section: q dđ = q dv . L tt [l/s].
Table 12: Determining traffic volume along the road
STT |
Pipe section |
l tt (m) |
q dv (l/sm) |
q dd (l/s) |
1 |
01--02 |
0 |
0.00435 |
0 |
2 |
02--03 |
75.4 |
0.00435 |
0.327778 |
3 |
03--04 |
184 |
0.00435 |
0.799884 |
4 |
04--05 |
372 |
0.00435 |
1.617156 |
5 |
05--06 |
388 |
0.00435 |
1.686711 |
6 |
04--06 |
123 |
0.00435 |
0.534705 |
7 |
06--07 |
219 |
0.00435 |
0.952035 |
8 |
07--08 |
179 |
0.00435 |
0.778148 |
9 |
03--08 |
198 |
0.00435 |
0.860744 |
10 |
08--09 |
227 |
0.00435 |
0.986813 |
11 |
09--10 |
139 |
0.00435 |
0.60426 |
12 |
07--10 |
216 |
0.00435 |
0.938994 |
13 |
10--11 |
23 |
0.00435 |
0.099985 |
14 |
11--12 |
298 |
0.00435 |
1.295464 |
15 |
12--13 |
18 |
0.00435 |
0.078249 |
16 |
13--14 |
301.7 |
0.00435 |
1.311548 |
17 |
14--15 |
0 |
0.00435 |
0 |
18 |
15--01 |
0 |
0.00435 |
0 |
-
Nodal flow: q n = S 0.5 q dđ +q ttr. In which, q dđ [l/s] is the flow along the route of the pipe sections connected to that node; q ttr [l/s] is the concentrated flow taken out at the calculation node:
Table 13: Calculated traffic for each node
STT | Pipe section |
q dd (l/s) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
1 | 01--02 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2 | 02--03 |
0.33 |
0 |
0.16 |
0.16 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
3 | 03--04 |
0.80 |
0 |
0 |
0.40 |
0.40 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
4 | 04--05 |
1.62 |
0 |
0 |
0 |
0.81 |
0.81 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
5 | 05--06 |
1.69 |
0 |
0 |
0 |
0 |
0.84 |
0.84 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
6 | 04--06 |
0.53 |
0 |
0 |
0 |
0.27 |
0 |
0.27 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
7 | 06--07 |
0.95 |
0 |
0 |
0 |
0 |
0 |
0.48 |
0.48 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
8 | 07--08 |
0.78 |
0 |
0 |
0 |
0 |
0 |
0 |
0.39 |
0.39 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
9 | 03--08 |
0.86 |
0 |
0 |
0.43 |
0 |
0 |
0 |
0 |
0.43 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
10 | 08--09 |
0.99 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0.49 |
0.49 |
0 |
0 |
0 |
0 |
0 |
0 |
11 | 09--10 |
0.60 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0.30 |
0.30 |
0 |
0 |
0 |
0 |
0 |
12 | 07--10 |
0.94 |
0 |
0 |
0 |
0 |
0 |
0 |
0.47 |
0 |
0 |
0.47 |
0 |
0 |
0 |
0 |
0 |
13 | 10--11 |
0.10 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0.05 |
0.05 |
0 |
0 |
0 |
0 |
14 | 11--12 |
1.30 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0.65 |
0.65 |
0 |
0 |
0 |
15 | 12--13 |
0.08 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0.04 |
0.04 |
0 |
0 |
16 | 13--14 |
1.31 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0.00 |
0 |
0.66 |
0.66 |
0 |
17 | 14--15 |
0.00 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
18 | 15--01 |
0.00 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
18 | Total | 12.87 | 0.00 | 0.16 | 0.99 | 1.48 | 1.65 | 1.59 | 1.33 | 1.31 | 0.80 | 0.82 | 0.70 | 0.69 | 0.69 | 0.66 | 0.00 |
In case of the largest water usage hour : We use the Loop program to calculate based on usage using the HazenWiliam formula: H = 3.02 xx . In which, C is the pipeline roughness coefficient, with new cast iron pipes C=110, new plastic pipes C=130-140; v is the velocity; D is the pipe diameter on the network.
-
Enter the data into the program: Node flow, pump flow, pipe length, node elevation, pipe diameter. Run the program to get the hydraulic calculation results of the hour of maximum water use and the hour of maximum water use with fire. As a result of running the program, we must check the required free pressure, velocity, and pipe loss.
Input: + Pipe section (From node ... to node ...)
+ Actual length of pipe section [m]
+ Diameter [mm]
+ Roughness
+ Node flow [l/s]
+ Node height [m]
+ Disadvantages
+ Free pressure required disadvantage point [m]
Result: + Pipe flow [l/s]
+ Pipe section velocity [m/s]
+ Pipe section loss [m]
+ Pressure gauge at node [m]
+ Required free pressure at node [m]
Adjust the case of non-compliance.
Table 14: Hydraulics during peak water usage hours
STT | From the button | Go to button | Length | Diameter | Roughness | Traffic | Speed | Pressure loss |
|---|
(m) | (mm) | (l/s) | (m/s) | (m/km) | (m) |
|---|
1 |
1 |
2 |
2.6 |
160 |
140 |
9.52 |
0.47 |
1.56 |
0.00 |
2 |
2 |
3 |
75.4 |
160 |
140 |
9.36 |
0.47 |
1.51 |
0.11 |
3 |
3 |
4 |
184.0 |
110 |
140 |
4.31 |
0.45 |
2.23 |
0.41 |
4 |
4 |
5 |
372.0 |
110 |
140 |
1.11 |
0.12 |
0.18 |
0.07 |
5 |
6 |
5 |
388.0 |
110 |
140 |
0.54 |
0.06 |
0.05 |
0.02 |
6 |
4 |
6 |
123.0 |
110 |
140 |
1.71 |
0.18 |
0.4 |
0.05 |
7 |
7 |
6 |
219.0 |
110 |
140 |
0.41 |
0.04 |
0.03 |
0.01 |
8 |
8 |
7 |
179.0 |
110 |
140 |
1.51 |
0.16 |
0.32 |
0.06 |
9 |
3 |
8 |
198.0 |
110 |
140 |
4.06 |
0.43 |
2 |
0.40 |
10 |
8 |
9 |
227.0 |
110 |
140 |
1.24 |
0.13 |
0.22 |
0.05 |
11 |
9 |
10 |
139.0 |
110 |
140 |
0.44 |
0.05 |
0.03 |
0.00 |
12 |
10 |
7 |
216.0 |
110 |
140 |
0.23 |
0.02 |
0.01 |
0.00 |
13 |
11 |
10 |
23.0 |
110 |
140 |
0.61 |
0.06 |
0.06 |
0.00 |
14 |
12 |
11 |
298.0 |
110 |
140 |
1.31 |
0.14 |
0.25 |
0.07 |
15 |
13 |
12 |
18.0 |
110 |
140 |
2 |
0.21 |
0.54 |
0.01 |
16 |
14 |
13 |
301.7 |
110 |
140 |
2.69 |
0.28 |
0.93 |
0.28 |
17 |
15 |
14 |
8.3 |
110 |
140 |
3.35 |
0.35 |
1.4 |
0.01 |
18 |
1 |
15 |
846.1 |
160 |
140 |
3.35 |
0.17 |
0.23 |
0.19 |
Table 15: Required pressure during peak water usage hours
Button | Node traffic | Pressure required |
(l/s) | (m) |
1 |
12.87 |
12.6 |
2 |
0.16 |
12.59 |
3 |
0.99 |
12.48 |
4 |
1.48 |
12.07 |
5R |
1.65 |
12 |
6 |
1.59 |
12.02 |
7 |
1.33 |
12.02 |
8 |
1.31 |
12.08 |
9 |
0.80 |
12.03 |
10 |
0.82 |
12.03 |
11 |
0.70 |
12.03 |
12 |
0.69 |
12.1 |
13 |
0.69 |
12.11 |
14 |
0.66 |
12.39 |
15 |
0 |
12.41 |
In case of fire during maximum water usage :
With the calculation of the number of people about 3124 people, there is 1 fire at the same time. The flow to extinguish each fire is 10l/s. The time to extinguish a fire is 3 hours.
Q CC = 10.8×n×q cc =10.8×1×10=108 m 3 . In which, n is the number of fires occurring simultaneously, n=1; t is the time a fire occurs, t = 3 hours; q CCh is the fire fighting water flow, q CCh = 10l/s.
Re-enter the node flow for the node where the fire occurred, the node flow and node pressure at the unfavorable point (keep the diameter D the same), run the software and adjust the results.
Table 16: Hydraulics during the hour of maximum water use with fire
STT | From the button | Go to button | Length | Diameter | Roughness | Traffic | Speed | Pressure loss |
(m) | (mm) | (l/s) | (m/s) | (m/km) | (m) |
1 |
1 |
2 |
2.6 |
160 |
140 |
17.79 |
0.88 |
4.96 |
0.01 |
2 |
2 |
3 |
75.4 |
160 |
140 |
17.63 |
0.88 |
4.88 |
0.37 |
3 |
3 |
4 |
184.0 |
110 |
140 |
9.8 |
1.03 |
10.21 |
1.88 |
4 |
4 |
5 |
372.0 |
110 |
140 |
5.99 |
0.63 |
4.1 |
1.53 |
5 |
6 |
5 |
388.0 |
110 |
140 |
5.66 |
0.6 |
3.7 |
1.44 |
6 |
4 |
6 |
123.0 |
110 |
140 |
2.33 |
0.25 |
0.72 |
0.09 |
7 |
7 |
6 |
219.0 |
110 |
140 |
4.92 |
0.52 |
2.85 |
0.62 |
8 |
8 |
7 |
179.0 |
110 |
140 |
3.72 |
0.39 |
1.7 |
0.30 |
9 |
3 |
8 |
198.0 |
110 |
140 |
6.84 |
0.72 |
5.24 |
1.04 |
10 |
8 |
9 |
227.0 |
110 |
140 |
1.81 |
0.19 |
0.45 |
0.10 |
11 |
9 |
10 |
139.0 |
110 |
140 |
1.01 |
0.11 |
0.15 |
0.02 |
12 |
10 |
7 |
216.0 |
110 |
140 |
2.53 |
0.27 |
0.84 |
0.18 |
13 |
11 |
10 |
23.0 |
110 |
140 |
2.34 |
0.25 |
0.72 |
0.02 |
14 |
12 |
11 |
298.0 |
110 |
140 |
3.04 |
0.32 |
1.17 |
0.35 |
15 |
13 |
12 |
18.0 |
110 |
140 |
3.73 |
0.39 |
1.71 |
0.03 |
16 |
14 |
13 |
301.7 |
110 |
140 |
4.42 |
0.47 |
2.34 |
0.71 |
17 |
15 |
14 |
8.3 |
110 |
140 |
5.08 |
0.53 |
3.03 |
0.03 |
18 |
1 |
15 |
846.1 |
160 |
140 |
5.08 |
0.25 |
0.49 |
0.41 |
Table 17: Required pressure during the hour of maximum water use with fire
Button | Node traffic | Pressure required |
(l/s) | (m) |
1 |
22.87 |
15.78 |
2 |
0.16 |
15.77 |
3 |
0.99 |
15.4 |
4 |
1.48 |
13.53 |
5R |
11.65 |
12 |
6 |
1.59 |
13.44 |
7 |
1.33 |
14.06 |
8 |
1.31 |
14.37 |
9 |
0.80 |
14.26 |
10 |
0.82 |
14.24 |
11 |
0.70 |
14.26 |
12 |
0.69 |
14.61 |
13 |
0.69 |
14.64 |
14 |
0.66 |
15.35 |
15 |
0 |
15.37 |
So the required pressure at the water intake point: H=12.6+0.5=13.1m
- Pipe type:
+ Pipes on the sidewalk use HDPE plastic pipes.
+ Pipes crossing the road with diameter ≥ D110 use ductile iron pipes with cement core.
+ Pipes with diameter < D110 use steel sleeves outside the pipe.
* Project engineering:
- At the lowest (end) positions on the line, a sludge discharge valve must be installed and at high positions (mainly sections through sewers), an air release valve must be installed.
- At valve, tee, and elbow positions Ø > 110, there must be a concrete bearing of grade 200 and 1x2 stone.
- At the branch head lock positions, there must be a water lock mouth for convenient management later.
- Accessories such as cones, tees, and elbows on cast iron pipes all use ductile iron material connected by rubber gaskets or flanges. Corner joints on HDPE pipes use HDPE plastic material connected by heat welding.
- Valves are manufactured according to European standards, ensuring that maintenance does not require disassembly. The valve body is coated with EPOXY to prevent corrosion. The valve rotates clockwise.
- Water supply pipes are underground, under the sidewalk.
3.4. Network
- Main pipeline network with diameter D110, D160
- Branch pipe network with diameter D63.
- The entire water supply network is underground on the sidewalk, and pipes across the road.
- Pipe type:
+ For pipe sections running on sidewalks, use HDPE plastic pipes: D110-D160 HDPE and D63 HDPE.
+ For pipe sections across the road, use ductile iron pipes with cement cores of diameter D100, D150 DI. For D63 HDPE through the road, use D100 steel pipes for external protection.
- Drain valve: used to drain water and residue when cleaning pipes, usually located at the end of the pipeline and low positions of the network.
- Air release valve: used to automatically release accumulated air in the pipe to the outside, preventing the pipe from being damaged, usually placed at high positions in the network.
3.5. Technical requirements for construction
-
Pipe installation method: cast iron pipes are connected by rubber gaskets; HDPE plastic pipes with diameter D≥110 are connected by welding method, HDPE plastic pipes D63 are connected by stitching method.
-
Accompanying accessories (such as cones, tees, elbows...) are made of ductile iron, connected by flange or flange method.
-
The valve is manufactured according to European standards to ensure that it does not need to be removed for maintenance. The valve body is coated with Epoxy to prevent corrosion. The valve rotates clockwise.
-
At valve, tee, and elbow positions D≥100, there must be a 1x2, 20Mpa stone concrete support.
-
At the locking positions, there must be a water lock for easy management.
-
Sludge discharge valve pit: pit body and bottom structure made of 20MPa reinforced concrete and 1x2 stone, cover structure made of 20MPa reinforced concrete and 1x2 stone, thickness of steel protection layer is 30mm.
-
After installation, the pipeline must be tested at working pressure P≥1.5P and the entire line must be flushed.
Table 18 : Calculation of water supply project volume
Status | Content | Mass | Unit |
I | Main material |
|
|
1 |
Ductile iron pipe D150 DI |
16.00 |
m |
2 |
Ductile iron pipe D100 DI |
442.00 |
m |
3 |
HDPE plastic pipe D160 |
62.00 |
m |
4 |
HDPE plastic pipe D110 |
3,141.00 |
m |
5 |
HDPE plastic pipe D63 |
6,557.00 |
m |
6 |
ST D100 steel telescopic tube |
94.00 |
m |
8 |
Fire hydrant D100 |
16.00 |
female |
9 |
Air release valve |
5.00 |
female |
10 |
Drain valve |
3.00 |
female |
II | Auxiliary materials (1+…+5) | 35% |
|
III | D150 connection meter | 1.00 | set |
4. Power supply
4.1. Power source:
The project area is currently supplied with power from a 22kV line running along Truong Chinh Street.
4.2. Medium voltage lines:
- Constructing a new 22kV line connecting from the existing 22kV line.
- Voltage level: 22kV.
- Select grid structure: 3 phase 3 wire.
- Conductor: Use 3-phase copper core underground cable 12.7/24kV-XLPE/PVC-M(3x95).
- Line length: 1,500 meters.
4.3. Technical and economic indicators table
Table 19: Technical and economic indicators
Status | Content | Unit | Target |
V | Indicators on urban power supply and lighting |
|
|
1 |
Household electricity supply index |
KWh/person/year |
1000 |
2 |
Percentage of main streets that are lit |
% |
95 |
4.4. Power supply and lighting orientation:
a Applicable design standards
-
Vietnam Construction Planning Standards QCVN01:2021/BXD;
-
National technical regulation QCVN07:2016/BXD;
b. Determine standards and electricity usage needs
* Load forecast:
Table 20: Load forecast table
STT | Electrical area | Scale | Power rating (kW) | Simultaneous coefficient | Total power (kW) |
1 |
Townhouse area (according to QCXDVN 01-2019/BD) |
household |
710 |
3 |
0.8 |
1704 |
1 |
Villa residential area (according to QCXDVN 01-2019/BD) |
household |
71 |
5 |
0.8 |
284 |
2 |
Commercial, service and public land |
W |
15537 |
0.03 |
0.7 |
326.28 |
3 |
Lighting |
W |
255 |
0.099 |
1 |
25.24 |
4 | Total capacity |
|
|
|
| 2339.52 |
Calculated capacity: 2339.52 kVA
Calculated capacity after compensation: 2515.6kVA
c. Technical solutions
With the 110kV Hoai Nhon transformer station with a capacity of 2x25MVA, it completely ensures the ability to supply the project area in the near future.
* 22kV medium voltage grid:
* 22kV medium voltage grid:
- Constructing a new 22kV line connecting from the existing 22kV line.
- Voltage level: 22kV.
- Select grid structure: 3 phase 3 wire.
- Conductor: Use 3-phase copper core underground cable 12.7/24kV-XLPE/PVC-M(3x95).
- Line length: 1,500 meters.
* 22/0.4KV transformer station:
With the above load forecast results, it is expected that the project area will build 07 22/0.4kV-400kVA transformer stations.
- Structure: Using transformer station hanging on iron pole.
- Voltage level: 22±2x2.5%/0.4kV.
- Wiring group: Δ/ Y0-11.
- Electrical connection diagram:
+ Medium voltage side: Use line block diagram - Transformer.
+ Short circuit and overload protection with 22kV outdoor drop-out fuse.
+ Protect atmospheric overvoltage from spreading from the line to the station by using a lightning arrester. The voltage level of the lightning arrester is 22kV, the lightning arrester is located right at the output of the primary coil of the transformer.
+ Low voltage side: Short circuit and overload protection by automatic switch.
- Measurement:
Active power measurement, Measurement is done indirectly through TI current transformer with total current > 75A.
- Grounding: Use grounding rod type, combined beam, all hot-dip galvanized.
* 0.4KV low voltage grid:
* 0.4KV low voltage grid:
- Arrange 0.4kV underground line on the sidewalk in front of the house.
- Voltage level: 0.4kV.
- Select grid structure: 3 phase 4 wire.
- Underground cable uses 4-core copper core cable XLPE/PVC/DSTA/PVC-M (3x95 + 1x70).
- Line length: 6,000 meters.
- Arrange low voltage electrical cabinets for each household, each supplying power to 6 to 8 households.
- Grounding: Use combined pole and beam grounding, grounding is arranged in all low voltage electrical cabinets.
* Road lighting:
- The lighting line system is mainly built underground.
- Use 10 meter high steel column.
- Power for the light rows is taken from lighting cabinets installed at transformer stations.
- Use 150W LED lights.
- The average distance between lights is from 25 to 30m.
- Average luminance: 0.4-1.2cd/m 2
- Average illuminance: 10-15lux.
- Overall uniformity U o : ³ 40 %
- Axial uniformity U l : ³ 70 %
- Voltage level: 0.4kV and 0.23kV.
- Conductor: Use 0.6/1kV low voltage underground cable with copper core, Cu/XLPE/PVC/DSTA/PVC(4x25) for main shaft and Cu/XLPE/PVC/DSTA/PVC(4x16) for branches.
- Line length: 5,500 meters.
- Grounding: All lamp posts are grounded, using combined pole and beam grounding, all are hot-dip galvanized.
- Control system:
+ All lights are controlled in automatic mode.
* Dusk: From 6pm to 10pm: 100% of lights are on.
* Midnight: From 10pm to 6am the next day, only 1/3 of the bulbs remain.
* Daytime: From 6am to 6pm all lights are off.
+ In addition, there is a manual switching control circuit as a backup circuit to switch the system on and off when the automatic circuit fails and to assist in maintenance and repair work.
4.5. Volume estimation:
Table 21: Power supply volume
STT | Category Name | Unit | Quantity |
1 |
Newly built 22/0.4kV-400kVA transformer station |
Station |
07 |
2 |
New 22kV underground cable line |
Km |
02 |
3 |
New underground 0.4kV line |
Km |
06 |
4 |
New underground lighting line |
Km |
07 |
| Total |
|
|
5. Planning of communication system
5.1. Basis for preparing subscription demand reports
-
Vietnam Construction Planning Standards QCVN01:2021/BXD;
-
National technical regulation QCVN07:2016/BXD;
5.2. Design criteria:
- Residential telecommunication subscription standards: 1 subscriber/1 household.
- Standard for public and commercial area subscription: 30 subscriptions/ha
5.3. Power supply:
- The main cable from the switchboard to the cable cabinet is run in a pipe and placed on the sidewalk. All main cable lines are connected to the central post office.
- Distribution cable from cable cabinet to underground arrangement point on sidewalk.
5.4. Supply plan:
a. Peripheral network:
- Construct a sewer system according to the principle of organizing a peripheral network and have the ability to upgrade and renovate conveniently for future development needs.
- Underground all types of cables into sewers running in technical trenches to ensure information quality and urban aesthetics.
- Cable manholes and tank covers have been standardized in size and design - according to industry standards.
- Location and distance between cable tanks are 80-100m apart.
- All sewer lines on the main road in the area are PVC pipes 110 x 0.5mm, run in trenches and buried under the sidewalk.
- The main cable from the switchboard to the cable cabinet is run in a pipe and arranged in a technical trench buried on the sidewalk. All main cable lines are connected to the central post office.
- The maximum length from the switchboard to the subscriber is not more than 50m except for some special cases, but must ensure that the attenuation from the switchboard to the subscriber is not more than 3.5km for 0.4mm cable.
- Install public telephone booths on main roads and in green landscape areas, with a service radius of 1000m, one booth is arranged.
b. Mass:
Table 22: Summary of subscriber volume
STT | Symbol | Soil type | Lot number | Population
(people) | Number of subscribers |
I |
| Residential land |
|
3.124 |
|
I.1 | A |
Land for newly built townhouses |
710 |
| 710 |
I.2 | B |
Land for newly built villas |
71 |
| 71 |
II | GD | Public land unit |
1 |
0 | 6 |
1 |
GD |
Kindergarten |
|
- |
|
III | DV | Urban public land - Commercial and Service - Complex |
1 |
0 | 12 |
IV |
| Technical infrastructure land |
2 |
0 | 6 |
1 |
HT |
Wastewater treatment area |
|
|
|
Total |
|
| 805 |
6. Urban underground construction planning
Along the planning boundaries, arrange plastic and HDPE pipes containing water supply and drainage systems, electrical cable systems, communications, etc.
Table 23: Summary of volume and cost of underground construction items
TT | Work category | Unit | Mass |
|---|
1 |
HDPE pipes |
m |
6000 |
2 |
Technical manhole |
pit |
154 |
7. Wastewater drainage and environmental sanitation planning
Within the planning area, there is no separate wastewater drainage system. Therefore, the planning of this area will design a separate wastewater drainage system to collect domestic wastewater from each household on urban roads leading to a centralized treatment area at the end of the road, treated to meet type B water standards, then discharged into the Can River.
Solid waste is collected and transported to the landfill of Hoai Nhon town. Total volume of solid waste generated: 2.81 (tons/day)
7.1. Wastewater drainage system
* Applicable design standards and regulations:
-
Vietnam Construction Planning Standards QCVN01:2021/BXD;
-
National technical regulation QCVN07:2016/BXD;
7.2. Wastewater collection design solutions
- Wastewater drainage system: All types of domestic wastewater are collected into a network of HDPE self-flowing pipes with diameters from D200 to D300, D400 and discharged to the area's general treatment plant. The entire drainage network is underground on the sidewalk.
*Advantage
- Ensures the best hygiene of all types of drainage systems because all wastewater is collected and cleaned at treatment plants before being discharged into water sources.
- The wastewater drainage network is often used at full capacity and has a relatively stable hydraulic regime between seasons of the year, reducing sediment in the pipeline network.
*Disadvantages
- Must invest in separate drainage system so construction and operation management costs are high.
- Bury pipes on the sidewalk or in the green belt to collect wastewater directly from factories and public works through technical manholes.
a. Collection network:
- The main route is drawn from high areas to low areas to take advantage of self-flowing water. The initial depth of the pipe is mainly chosen as h=0.75m. The sewer network is arranged in the Project area near the works listed in the wastewater flow determination table. The pipe material uses HDPE Pn6 pipe with diameter: D200 - D300-D400.
- All wastewater from the construction sites is collected into the wastewater drainage system leading to the project's centralized treatment plant. Some types of wastewater must be pre-treated at the source before being discharged into the area's drainage system. Specifically:
+ Wastewater from sanitary equipment must be treated locally through septic tanks at the construction site.
b. Network projects:
- Manholes are arranged at locations where the sewer changes direction, diameter, slope, has branch sewers pouring into it, and on long pipe sections at specified distances; using 1x2 M250 stone reinforced concrete material.
7.3 Specifications and calculation method
Based on the water demand of the project area, because the collection sewer line in the project area is not large, the first pipeline is selected as D200, D300 and the last collection pipeline is D400.
a The specifications must comply with the following standards :
Hydraulic calculation of wastewater drainage:
- Flow velocity calculated according to TCVN 7957-2008:
+ Pipe with diameter D150-D200: Vmin = 0.7 m/s
+ Pipe with diameter D300-D400: Vmin = 0.8 m/s
+ For the first pipe sections or for settled or biologically treated wastewater, it is allowed to take 0.4m/s.
- Minimum slope:
- Maximum fill:
Diameter, d(mm) | Maximum filling, (h/d) max |
150¸300 |
0.6 |
350¸450 |
0.7 |
500¸800 |
0.75 |
>=900 |
0.80 |
b. Calculation method and calculation formula:
* Determine the calculated flow:
- Water discharge standards:
STT | Public works | Population
(people) | Water supply standards | Unit | Domestic water flow | Wastewater flow |
(m3/day) |
(m3/day) |
1 |
Domestic water supply |
3124 |
150 |
l/ng.ngđ |
468.60 |
468.60 |
2 |
Trade, services, tourism |
|
10% |
l/ng.ngđ |
46.86 |
46.86 |
3 |
Qday, average (m3/day) |
|
|
|
515.46 |
515.46 |
Choose the non-regulating coefficient k=1.20.
So the capacity of the treatment plant: Q = 515.46×1.20 = 618.60 m3/day
- Calculated flow of pipe section:
q tt = (q dd + q cs + q cq ) x K ch (l/s)
In there:
q dd : Traffic along the road
q cs : Side flow
q cq : Flow rate
K ch : Non-harmonic coefficient (look up according to TCVN 7957)
* Calculation method:
Once the flow rate for each pipe section has been determined, use the hydraulic lookup table to look up the parameters, or use Hwase software to look up and calculate the hydraulics.
7.4. Solid waste management, environmental sanitation
- Garbage and solid waste generated in daily life, markets and commercial centers are collected and transported to landfills or solid waste treatment facilities of Hoai Nhon town.
* Proposed wastewater treatment plant technology plan:
Waste water in
Fresh Scum
FBR aerobic biological tank |
Excess sludge
Source of reception Beach selection
QCVN 14:2008/BTNMT - Column B, Value C
Figure 28: Technology solution
Wastewater from people's daily activities in residential areas is channeled through a system of ditches and pipes through trash racks and into the receiving tank. Before going through the equalization tank, water will be passed through a fine trash rack that has the task of retaining all types of trash larger than or equal to 2mm, reducing the amount of suspended solids in the wastewater.
Water from the collection pit passes through the fine trash separator to the equalization tank. The equalization tank has the task of regulating the flow and concentration of dirt in the wastewater, ensuring a stable working mode for the following projects. In addition, the wastewater is supplied with air from a submerged blower here, to stir the wastewater, regulate the flow and create aerobic conditions to avoid anaerobic decomposition causing bad odors. The wastewater after the equalization tank will be pumped to settling tank I.
The settling tank is vertical. Settling tank I has the function of settling a part of the organic residue in the wastewater, from here the wastewater flows by gravity to the aerobic tank with a layer of filter material submerged in water.
In the aerobic biological tank with buffer material, dissolved and insoluble organic substances are transformed into biological sludge - a population of aerobic microorganisms - capable of settling under the influence of gravity. Wastewater is continuously flowed into the biological tank in which air is introduced and mixed with activated sludge, providing oxygen for microorganisms to decompose organic matter. Under such conditions, microorganisms use nutrients such as BOD, N, P in water to grow, increase biomass and form sludge in an adherent form. This mixture, after a period of time, adheres to the filter material, will peel off and flow to the biological settling tank.
After flowing through the aerobic biological tank, the water will flow hydraulically through the II settling tank to settle the activated sludge, the clear water will flow through the disinfection tank to remove the remaining microorganisms in the wastewater before being discharged to the receiving source.
The sludge from settling tank I and settling tank II will be led through the anaerobic sludge digester, then periodically pumped.
7.5. Volume statistics:
Table 25: Statistics of wastewater discharge volume
TT | Content | Size | Mass |
|---|
(mm) | (m) |
|---|
I | Drain pipe |
|
|
1 |
HDPE plastic pipe |
D200 |
9892.2 |
2 |
HDPE plastic pipe |
D300 |
1287.8 |
3 |
HDPE plastic pipe |
D400 |
231.9 |
II | Technical manhole |
|
Female |
1 |
Manhole |
1200x1200 |
416 |
2 |
Manhole |
1400x1400 |
65 |
III | Treatment plant |
| 1 |
8. Greenery planning
- Plant shade trees (each tree is about 10m apart), create ginger grass patches on the sidewalks along main roads.
- Arrange shade trees, garden trees, plant grass in public areas, common landscape spaces, connecting spaces to create space, route linking blocks, areas, reduce heat absorption, create airy space for living, activities of people..
8.1. Crops and technical requirements
- Mainly choose plants that are suitable for the soil and climate, taproot plants, rarely lose leaves, flowers have a pleasant smell and do not have toxic resin...
a. Black star tree (cống, rain tree, muông ngủ, tamarind):
- English name: Hopea odorata
- Scientific name: Hopea odorata
- Genus: Star, Family: Dipterocarpus, Species: H. odorata
|
Figure 29 : Black star tree |
(1) Morphological characteristics, physiological and ecological characteristics
Trunk, canopy, leaves: Tree, 30-40cm high. Straight round trunk, gray bark often has vertical cracks. Leaves are wide, oval or lanceolate, the tree produces new leaves every year in October-December.
Flowers, fruits, seeds: Small flowers grow in clusters, white, flowering season is February. Fruit is oval, ripening in April-May. When young, the fruit is green, turning yellow-brown when old. The amount of fruit is large but usually only flowers once every 2 years.
Growth rate: fast.
Suitable for: grows well in humid tropical areas with two distinct rainy and dry seasons. The tree prefers moist, deep soil. The most suitable is ancient alluvial soil and sandy clay in the Southeast region. When young, the tree is shade-tolerant, but after 3-4 years of age, the tree completely prefers light. Natural regeneration is good in forests with light canopy cover. |
(2) Technical requirements: trees planted in the project have a base diameter of D=(0.13÷0.15)m for small trees, height H=(4÷5)m, canopy width (2÷3)m, after planting, trees must be arranged with supporting columns to ensure stability for good growth.
(3) Acceptance requirements: small tree trunk with diameter D=(0.13÷0.15)m, height H=(4÷5)m, canopy width (2÷3)m, tree grows well with green leaves and no pests. Plants must be arranged with supporting poles to ensure stability for good growth.
b. Lim set tree (Lim xet):
- Scientific Name: Peltophorum pterocarpum (DC.) Back.
- English name: Rusty-shield tree, Yellow flame tree, Yellow poincian
- Family: Caesalpiniaceae
- Origin: Australia, tropical Asian countries.
|
Figure 30 : Ironwood tree |
(1) Morphological, physiological and ecological characteristics:
- Trunk, canopy, leaves: Large tree, thick branches, rusty color when young. Even-pinnate compound leaves, small, evenly arranged leaflets.
- Flowers, fruits, seeds: The inflorescence is an upright panicle at the top, with red velvety hairs. The average flower is bright yellow, with wide, serrated petals. The stamen in the middle is also yellow and short. The fruit is flat with wings on the edge, 2 - 4 seeds.
- Lim Set tree has an average growth rate, suitable for rich, moist but well-drained soil, the tree tolerates partial shade and can sometimes withstand hot sun with adequate watering.
- Lim Set tree is one of the typical tropical trees, the tree has a very wide ecological amplitude, has the ability to grow and develop well in many different conditions: coastal areas, midlands, mountainous areas. The tree can live on many types of soil, including acidic soil, withstands heat and drought. In particular, the tree can grow well on sandy land along the coast. The tree loves light and regenerates seeds and shoots strongly.
(2) Technical requirements:
- Tree trunk diameter D=(0.13÷0.15)m, height H=(4÷5)m, canopy width (2÷3)m, after planting the tree must be supported by poles to ensure stability for good growth.
- Planting holes are filled with a 0.6m thick layer of topsoil mixed with compost. The soil includes: 50% topsoil, 30% organic fertilizer, 20% coconut fiber, ash, and rice husk.
- The soil for planting trees must be fine, free of sand or grit, and have a yellow or brown color.
- After planting, the tree trunk must be kept upright and must be cared for and watered regularly.
- Maintain the tree after planting with tap water for 90 days.
(3) Acceptance requirements:
- Trunk diameter D=(0.13÷0.15)m, height H=(4÷5)m, canopy width (2÷3)m, tree grows well with green branches and leaves and no pests or diseases. After planting, the tree must meet the technical requirements for support stakes according to Official Dispatch No. 239/VP-QLDTh.
c. Taiwan Banyan (Bucida molineti I, Terminalia molineti):
- Family: Combretaceae
- Origin: Bahamas
- Distribution in Vietnam: South
|
Figure 31 : Taiwan banyan tree |
(1) Morphological characteristics:
- Trunk, canopy, leaves: Medium sized tree, many branches growing in a circle, horizontally making the canopy multi-layered, gray-brown bark. Leaves grow concentrated at the top of branches, inverted oval shape, nearly round tip, elongated base.
- Flowers, fruits, seeds: Flowers are rarely seen.
(2) Physiological and ecological characteristics:
- Growth rate: Medium
- Suitable for: Light-loving plants, rich soil, good drainage, no need for regular pruning, vitality may decrease after flowering period, need care and nutrients.
(3) Technical requirements: root diameter D=(0.8÷0.10)m, height H=(3÷3.5)m, canopy width (2÷3)m, after planting the tree must be supported by poles to ensure stability for good growth.
(4) Acceptance requirements: root diameter D=(0.8÷0.10)m with height H=(3÷3.5)m, canopy width (2÷3)m, tree grows well with green leaves and no pests. Plants must be arranged with supporting poles to ensure stability for good growth.
d. Lagerstroemia speciosa (Water Lagerstroemia:
- Scientific name: Lagerstroemia speciosa (L.) Pers
- Family: Lythaceae
- Origin: India, Sri Lanka, Burma
- Distribution in Vietnam: Widespread
|
Figure 32 : Lagerstroemia tree |
(1) Morphological characteristics:
- Trunk, canopy, leaves: Large tree, up to 20m tall, high branching, straight, thick canopy. Leaves are oval or long lanceolate, blunt at the top, growing nearly opposite.
- Flowers, fruits, seeds: Pyramid-shaped inflorescences at the top of branches, growing straight. Globular flower buds. Large flowers with 6 petals, short claws, purple-pink stripes (color turns purple in the afternoon). Capsule, covered by calyx. Seeds have soft wings.
(2) Physiological and ecological characteristics:
- Growth rate: Medium
- Suitable for: Light-loving plants, well-drained humus soil. Needs protection from strong winds as they can damage the flowers.
(3) Technical requirements:
- Tree trunk diameter D(0.13÷0.15)mm, height H(4÷6)m, canopy width D(2÷3)m, after planting the tree must be supported by poles to ensure stability for good growth.
- Planting holes are filled with a 0.6m thick layer of topsoil mixed with compost. The soil includes: 50% topsoil, 30% organic fertilizer, 20% coconut fiber, ash, and rice husk.
- The soil for planting trees must be fine, not mixed with sand, and has a yellow or brown color.
- After planting, the tree trunk must be kept upright and must be cared for and watered regularly.
- Maintain the tree after planting with tap water for 90 days.
(4) Acceptance requirements:
- Tree trunk diameter D(0.13÷0.15)mm, height H(4÷5)m, canopy width D(2÷3)m, tree grows well with green leaves and no pests. After planting, the tree must meet the technical requirements for support stakes according to Official Dispatch No. 239/VP-QLDTh.
e. Bauhinia purpurea (Bauhinia purpurea):
- Family: Caesalpiniaceae
- Origin: China, India, Myanmar
- Distribution in Vietnam: Widespread
(1) Morphological characteristics:
- Trunk, canopy, leaves: Small to medium sized tree, long, soft branches, hairy when young. Leaves are nearly round, heart-shaped at the base, with 2 deep, tapering lobes at the top, light green, smooth, soft. Petioles are long and hard.
- Flowers, fruits, seeds: Inflorescences are clustered, up to 30cm long, slightly curved and drooping, bearing 6 - 7 large, sparsely arranged flowers. Flowers have 5 purple-red petals with red or yellow stripes, elongated, prominent, wide spoon-shaped petals with many dark red spots. Fruits are flat, with 9 - 10 seeds.
(2) Physiological and ecological characteristics:
- Growth rate: Fast
- Suitable for: Light-loving plants, rich soil, good drainage, no need for regular pruning, vitality may decrease after flowering period, need care and nutrients.
(3) Technical requirements: root diameter D=(0.13÷0.15)m, height H=(3÷5)m, canopy width (2÷3)m, after planting the tree must be supported by poles to ensure stability for good growth.
(4) Acceptance requirements: root diameter D=(0.13÷0.15)m with height H=(3÷5)m, canopy width (2÷3)m, tree grows well with green leaves and no pests. Plants must be arranged with supporting poles to ensure stability for good growth.
f. Royal poinciana tree:
- Scientific name: Delonix regia
- Family: Bean-Fabaceae
- Origin: Madagascar
- Distributed in Vietnam
|
Figure 34 : Royal poinciana tree |
(1) Morphological characteristics:
- Medium-sized tree, 8-12m tall, canopy diameter about 10-15m, trunk diameter 30-60cm. Compound pinnate leaves about 30-50cm, deciduous leaves from January to May.
- Flowers, fruits, seeds: large flowers with 4 bright red or slightly orange-red petals, up to 8cm long, the 5th petal grows straight, this petal is slightly larger and speckled with white/yellow or orange/yellow. The fruit is a dark-colored bean when ripe, up to 60cm long and about 5cm wide.
(2) Physiological and ecological characteristics:
- The tree regenerates both seeds and shoots strongly, and can grow well on all types of terrain: coastal, mountainous, and midland. The tree is light-loving, grows vigorously, develops quickly, is not picky about soil, and is very easy to grow. However, the big disadvantage is that it does not have a long life: trees planted on the street are only 30 years old and have signs of rotting. Pests and fungi begin to attack, trees planted in parks and schools may have a longer life but only reach 40-50 years old.
(3) Technical requirements:
- Tree trunk diameter D(0.13÷0.15)mm, height H(4÷5)m, canopy width D(2÷3)m, after planting the tree must be supported by poles to ensure stability for good growth.
- Planting holes are filled with a 0.6m thick layer of topsoil mixed with compost. The soil includes: 50% topsoil, 30% organic fertilizer, 20% coconut fiber, ash, and rice husk.
- The soil for planting trees must be fine, not mixed with sand, and has a yellow or brown color.
- After planting, the tree trunk must be kept upright and must be cared for and watered regularly.
- Maintain the tree after planting with tap water for 90 days.
(4) Acceptance requirements:
- Tree trunk diameter D(0.13÷0.15)mm, height H(4÷5)m, canopy width D(2÷3)m, tree grows well with green leaves and no pests. After planting, the tree must meet the technical requirements for support stakes according to Official Dispatch No. 239/VP-QLDTh.
g . King Areca Palm:
- Scientific name: Roystonea regia
- Family: Arecaceae
- Origin: Native to southern Florida, Mexico, part of Central America
- Distributed in Vietnam
Figure 35 : King Areca Palm
(1) Morphological characteristics:
-The tree trunk is 8 to 20 meters high, is a vertical, tall, solitary column, with joints but not clearly visible. The abdomen is swollen near the top about 40 to 60 cm, the trunk is usually brown, the spathe is shiny and smooth green.
-The leaves grow concentrated at the top of the tree, are 3 to 4 meters long, the sheath is very large, green, the leaf blade is pinnate.
-The flower cluster has a spathe wrapped around it, growing from the trunk right below the base of the old leaves, the spathe is usually about 1 meter long, hanging down to the ground, branching many times, carrying female and male flowers. The female flowers are very small, without a stylobate; the male flowers are white and flat.
-The fruit is oval, green, small (from 1 to 2 cm), when ripe it is reddish brown.
- Growth rate: The growth rate of the tree is slow, does not like water, suitable for light-loving trees, should be planted in a well-drained place, when young, it must be shaded, the root collar must be planted higher than the mouth of the hole. Propagated from seeds, the king areca tree is very drought-resistant and long-lived.
(3) Technical requirements: root diameter D=(0.13÷0.15)m, height H=(5÷7)m, canopy width (2÷3)m, after planting the tree must be supported by poles to ensure stability for good growth.
(4) Acceptance requirements: root diameter D=(0.13÷0.15)m with height H=(5÷7)m, canopy width (2÷3)m, tree grows well with green leaves and no pests. Plants must be arranged with supporting poles to ensure stability for good growth.
h . Ginger Grass (Axonopus compressus):
- English name: Wide Leaved, Carpet Grass, Cow Grass, Rumput Parit.
- Scientific Name: Axonopus compressus.
- Family: Poaceae.
- Origin: South America, Mexico, Brazil.
- Distribution in Vietnam: Widespread.
(1) Morphological characteristics:
- Stem, Crown, Leaves: Herbaceous plant, long creeping branches rubbing the ground. Simple oval leaves, small, long, pointed tip, base extending into petiole. Blade is shiny green, edges have rough hairs.
- Flowers, Fruits, Seeds: Cotton inflorescence.
(2) Physiological and ecological characteristics:
- Growth rate: Fast.
- Suitable for: Decorative ground cover plant, likes sun or partial shade, average water needs. Propagated from seeds, cuttings or bush separation.
(3) Technical requirements:
- Planted in the construction as bushes, strong shiny leaves, hard stems.
(4) Acceptance tree requirements:
- Plants must cover the ground in the planting area, have shiny, thick leaves and be free of pests and diseases.
i . American Velvet Grass:
- Scientific name: Zoysia Tenuifolia
- English name: Mascarene grass
- Morphological characteristics: small, thin, green leaves.
|
Figure 37 : American velvet grass |
(1) Physiological and ecological characteristics:
+ Growth rate: Fast, grass can live and grow well in many different types of soil from sandy to clay and can withstand a wide range of pH.
+ Grass is often used to create green areas to decorate gardens, growing well in warm to hot temperatures and lots of light.
+ Suitable for: Decorative ground cover plant, likes sun or partial shade, average water needs. Propagated from seeds.
(2) Technical requirements: plants planted in the construction by panels or carpet rolls are all green and smooth, free of pests and diseases.
(3) The acceptance tree must cover the entire planting area, have shiny, thick leaves and be free of pests and diseases.
8.2. Total mass
Table 26: Summary of estimated green tree volume
STT | Category | Mass |
|
|---|
|
|
|---|
A | Shade trees | (tree) |
|
1 |
Black star tree (4-5)m. Trunk diameter D (0.13-0.15)m. |
80 |
|
2 |
Lim xet tree is (4-5)m high. Trunk diameter D (0.13-0.15)m. |
26 |
|
3 |
Taiwan Banyan tree is 4-5m high. Trunk diameter is 0.13-0.15m. Crown diameter is 2-3m. |
87 |
|
4 |
Lagerstroemia tree is (4-5)m high, trunk diameter D (0.13-0.15)m, |
27 |
|
5 |
Queen tree is (4-5)m high, trunk diameter D (0.13-0.15)m, canopy diameter (2-3)m |
11 |
|
6 |
Royal poinciana tree is (4-5)m high, trunk diameter D (0.13-0.15)m, |
42 |
|
7 |
Areca palm (5-7)m, trunk diameter D (0.2-0.3)m, |
40 |
|
B | Shrub | (m 2 ) |
|
1 |
Ginger grass, velvet grass |
8202.6 |
|
2 |
Decorative shrubs |
3200 |
|
Total |
|
|
9. Pipeline synthesis
9.1. Design purpose
The overall arrangement of technical pipeline lines is to ensure the rationality of the ground and elevation between the types of pipelines, avoiding overlapping that does not ensure technical safety during construction. On the other hand, it is used as a summary document for monitoring and management during operation. The design complies with the standards and regulations to ensure technical standards, convenient construction, saving construction land for all types of pipeline lines and reserving land for the construction of future pipelines.
9.2. Design principles
- Priority is given to arranging self-flowing pipes, large-sized pipes and pipes with difficult construction.
- Ensure the minimum distance according to regulations between pipes and construction works in both height and vertical direction.
F. CONSTRUCTION ECONOMICS
Based on the volume in the detailed planning documents at a scale of 1/500 of the Residential Service Area along Lai Giang River, the total investment estimate is as follows:
Table 27 : Estimated investment costs
Total construction cost of the entire project: 1,260,787,173,000 VND.
G. CONCLUSION, RECOMMENDATIONS
The planning and investment of the 1/500 scale detailed construction planning of residential services along Lai Giang river, Bong Son ward, Hoai Nhon town, Binh Dinh province will contribute to promoting the economy, ensuring social security and expanding the urban land development of Bong Son urban area, meeting the needs of the people.
1. Conclusion
With favorable conditions for investment opportunities in terms of location, land and financial potential... investing in the detailed construction planning at a scale of 1/500 for residential services along Lai Giang River, Bong Son Ward, Hoai Nhon Town, Binh Dinh Province with a synchronous technical infrastructure system and creating an urban landscape will help local people have a good choice for themselves a place to settle down.
The detailed construction planning project at a scale of 1/500 for residential services along Lai Giang River, Bong Son Ward, Hoai Nhon Town, Binh Dinh Province has met the requirements, necessary needs and assigned tasks.
The project has provided specific solutions for reasonable organization of landscape architecture space, convenient functional zoning layout, economical and environmentally friendly land use, creating unique characteristics suitable for the nature of the area. Solutions for traffic, leveling, water supply, electricity supply and technical infrastructure works are optimal and completely suitable for the planning area.
Investing in the 1/500 scale detailed construction planning of residential services along Lai Giang River, Bong Son Ward, Hoai Nhon Town, Binh Dinh Province is a very necessary task, forming a new residential area with synchronous infrastructure conditions, reasonable architectural space, following the orientation of the General Planning of Hoai Nhon Town in particular, Binh Dinh Province in general until 2035. The formation and development of this residential area will play an important role in the urban development of the whole Binh Dinh Province in particular and the Central region in general. It satisfies the housing needs of the region, improves the urban landscape in the region, brings economic efficiency and serves the urgent need to form a new, high-quality residential area, in order to serve well the cause of economic development and improve the material and spiritual life of the people in the region.
2. Recommendations
Respectfully submit to the People's Committee of Hoai Nhon town, departments and branches to soon approve the detailed construction planning project at a scale of 1/500 for residential services along Lai Giang river, Bong Son ward, Hoai Nhon town, Binh Dinh province so that the unit has a basis to carry out the next steps.
.
MINIATURE DRAWING