Project: A21 house
Building investor: A21 studio
Location: No 2/10 Nguyen Huy Luong, Ward 14, Binh Thanh district, HCMC, Vietnam
Architecture designer:A21 studio
Total land area: 40m2
Material: Brick, wood, concrete, steel, green
Building Details
Private house+office
New building project
40 m²
2,5
1
1
40 m²
100 m²
100 m²
100 m²
There is not any design tool which is used. The designer draws by hands. The building complies with national building code for semi-detached house.
USD
230
2012
2012
Project Team
A21 studio
http://www.a21studio.com.vn/
A21 studio
A21 studio
A21 studio
http://www.a21studio.com.vn/
A21 studio
A21 studio
A21 studio
Climate Analysis
Ho Chi Minh is considered as tropical monsoon climate featuring wet and dry seasons. The wet season is between May-November while dry season is between December to April.
Average annual solar radiation is about 140 Kcal/cm2/yr
Sun hour is about 160-270hour/month
Average temperature is 27°C
Min temperature is about 25.7°C (Dec-Jan)
Max temperature is about 28.8°C (April)
Annual reprecription is 1,949mm
Avearge number of rainy days is about 159 days/year
Average RH is 79.5%
Prevailing winds include seasonal SWS winds from the Indian Ocean and seasonal NNE winds from the East Sea. SSE trade winds occurs between March-May.
Design Approach
The building is located in a high density area, the architect utilizes the neighbor buildings' wall, recycled wood and tiles to build the house for saving investment budget with several passive strategies as follows:
1 - Technical roof and insulated roof
2- Use the neighbor house's exterior wall as internal wall
3 - Recycled material for floor/wall cover
4 - Recycled wood/Steel
5 - Natural ventilation (Stack ventilation)
6- Daylighting (through void and non-closed floor structure), reduce direct sunlight but use the indirected sunlight
The house locates in a high density area. Surrounding buildings play as shading system of the buildings.
The main entrance faced to the south and small vallery, which could get prevailing wind during rainy season
Project: A21 house
Building investor: A21 studio
Location: No 2/10 Nguyen Huy Luong, Ward 14, Binh Thanh district, HCMC, Vietnam
Architecture designer:A21 studio
Total land area: 40m2
Material: Brick, wood, concrete, steel, green
The building was applied with several passive strategies to save energy as well as save investment budget
Document
Special Feature
Daylighting (through void and non-closed floor structure), reduce direct sunlight but use the indirected sunlight
Installed by tenants as usual
Non-closed floor is not only a floor area but also create stack ventilation and natural lighting
Recycled tiles are used on walls, floorsin the bathrooms
Recycled wood, steel was used for some interior stuffs such as table, desk, cabinet
Exterior wall was used as interior wall of the house
Generally, Material and recycled material were applied flexibility in this house.
Kitchet chimney is not installed. Stack ventilation is used for exhausted heat in kitchen
Recycled tiles are used on walls, floorsin the bathrooms
Recycled wood, steel was used for some interior stuffs such as table, desk, cabinet
Exterior wall was used as interior wall of the house
Generally, Material and recycled material were applied flexibility in this house.
Kitchet chimney is not installed. Stack ventilation is used for exhausted heat in kitchen
The façade design make the house similar to the other neighbor buildings, but the interior design is unique.
The neighbor exterior walls are utilized as interior wall
The tree is planted inside to create shades from the inside void but also create friendly environmental view
Building Material
RCC frame structure and steel frame (mixed)
As usual
Neighbor house's exterior wall as internal wall
Only doors and window in the main facade
Recycled wood/ unclosed floor to improve stack ventilation and daylighting
Wood and recycled tiles in bathroom
Technical roof and insulated roof /ventilated roof
None
Energy systems
LEDs and CFLs.
However, very few lights are found in the house
No exterior lighting
No ceiling fans
No air-conditioning
No lift
Energy efficiency appliances are used including fridges, washing machines (inverter system), televisions, LEDs and CFLs.
However, very few lights are found in the house
There is not any air conditiong found in the building
None
Lessons Learned
A21 house is their experiment to solve the relationship between people and nature in a small space, which is more popular in the city
The designer does not care much about renewable energy but friendly environment architecture, renewable or local material are key points in their design generally.