1. General information
Location and description of the intervention
City or FUA
Bangkok
Region
Asia
Native title of the NBS intervention
สวนบนอาคารที่ทำการสภาวิศวกร
Short description of the intervention
The new office building of the Council of Engineers is located on one of the busiest streets of Bangkok, Thailand. The building aims to combine new engineering technology with aesthetic and function, while maximizing green area and promoting sustainability. The building's terraced green area lead the people up to the entrance on second floor and continue up to the sky garden on the forth floor. The main features of the garden are lush fauna with tree and shrub species, planters, multi-purpose open spaces and bio-filtration system that use plants to filter and divert rainwater. The project aims to acquire the platinum TREES building rating (a green building certificate in Thailand) and it is in the process of applying for the certificate. (Ref. 1,2,3,5)
Address

1616/1 ,Lat Phrao 54 Alley, Wang Thonglang
Bangkok
10310
Thailand

Area boundary
POINT (100.592403 13.795402)
POINT (100.592597 13.795285)
POINT (100.591961 13.795205)
POINT (100.591947 13.795274)
POINT (100.59191 13.795289)
POINT (100.591903 13.795357)
NBS area image
Source of NBS area image
Source: Ref. 7
Total area
3184.00m²
NBS area
1305.00m²
Type of area before implementation of the NBS
Timeline of intervention
Start date of the intervention (planning process)
2019
Start date of intervention (implementation process)
2022
End date of the intervention
2022
Present stage of the intervention
Goals of the intervention
One of the three main development focuses of the projects was the creation of a Grand Park, the green area of the building along the following objectives:
1. Contribution to the improvement of the urban environment by planting trees and creating a green area with low maintenance costs and efforts.
2. Addressing the heat island effect impacting the district due to high building density.
3. Creation of a public garden that is available for workers of the building and any locals, thus improving visitors' quality of life with the help of nature.
4. The reduction and filtration of the run-off water though a Water treatment garden.
The overarching goal for this new Council of Engineers office building is to achieve gold or higher for TREES-NC certificate.
(Ref. 1,2,3,5)
Quantitative targets
The quatitative targets that links to TREES certificate and green area includes:
1. Provide open green space more than 25% of ground area of the building.
2. Grow 1 tree per 100sq.m. of open space
3. The area of hard pavement that receive direct sunlight is less than 50% of the site area.
(Ref. 6)
Monitoring indicators defined
The monitoring indicators observed highlighted in connection with the TREES certificate are:
- Sustainable site planning which include 3 sub-criteria: 1) the amount of open green space exceed 25% of building ground. 2) the ratio of tree per open space exceed 1tree/100sq.m. 3) select native specifies plantings. - Water infiltration and flood mitigation
- Mitigate urban heat island effects which includes 2 sub criteria: 1) install roof garden or vertical garden to reduce sunlight reflection. 2) the ratio of hard pavement and site area lower than 50%.
Water conservation
- Water saving strategy and effective water usage
The first requirement regarding Building Management indicate that the project need to provide manual for working and maintenance which include protocol for monitoring and evaluation of the operation of all relevant systems within the building.
(Ref. 6)
Climate change adaptation: What were the goals of the NBS?
Implementation activities
Green area and sky garden
41% of the site is green area which can be divided into 4 main parts:
1. Entrance garden consist of sloped pathway that lead to the main office entrance on the second floor and planting areas that mainly covered by small shrubs. The slope pathway allows people with wheelchair to access the building more easily while the selected vegetation helps invite people to go up to the garden.
2. The stepped garden includes normal planting beds with trees and shrubs, and overflow ponds with aquatic plants that act as bio-filter. The water that passes through the bio-filter system in this area is grey water from the building such as water from hand washing. The grey water first passes through the main water treatment system in the building before being pumped into the upper pond for second filtration. The water flows down to lower ponds while being filtered by aquatic plants and is collected in the water tank underground. The flowing of water also help lower the local outdoor temperature and the building’s temperature. Along the stepped garden is seating which integrated with planting beds. Planting create shades for the seating area and the seating arrangement form a small amphitheater. People can sit and relax here and also hold event or seminar.
3. The main sky garden consists of planting beds with trees, seating area, main open space and a sculpture of Vishnu God which is worshiped by the engineers. The open space is a multi-function area where people can hold event or gathering.
4. Planting area on the ground level that surrounded the building.
All green areas are connected with either slope or stairs. The designer intentionally use steps and provide maximum shades to encourage people to move outside which is good for their health.

Planting selection for low maintenance and require less water.
1. Only trees and shrubs, no grass,
2. All plantings are native to Thailand.
3. Consider plantings that require less water
4. Select trees with large leaves so if they fall, they can be collected easily and won’t clogged the drainage system.
5. Mix variety of planting, both size and species, to promote biodiversity

Materials selection
1. Outdoor permeable pavement which help mitigate heat and allow infiltration.
2. Select materials with module that match with the landscape design. This can help reduce material waste.
3. Choose material with light colour to reduce heat absorbtion.

Water system that associated with the sky garden
1. Install underground detention tank
2. Install water treatment system for reusing grey water from the building
3. Double slabs floor system allow surface water to run through and being collected in the tank more easily.
4. Separate piping system for rainwater that fall on hardscape area and water from planters.
Apart from clean tap water, there are two additional sources of water being used in the project including:
1. Rainwater has been collected from outdoor surface and stored in the tank underground. This rainwater is mainly use for the cooling system of the building and part of it is for watering planting areas.
2. Grey water from the building go through treatment system to filtered out dangerous substances before being diverted to bio-filtration system outdoor and stored in reuse water tank. This safe grey water is mainly use for watering plants.

Other building components and construction methods that enhance building system’s function, support sustainability and fulfill the requirement for TREES certificate
1. Automated car parking system which help minimized time on car and reduced carbon released
2. Install solar cell panels on the roof
3. Outer Facade that can filter and reduce sunlight in the building by 40%
4. Inner facade use glass that can reduce light reflection
5. Provide space for trash separation, promote recycling
6. Install water filtration system, all grey water or used water from the building will pass through the system. After the filtration, part of the water will be kept in water tank for further use and excess water will be released to the main city’s drainage system.
7. Use colour and materials with low VOCs released.
8. Use water saving toilet fixtures

The project is in the process of platinum TREES-NC certificate application.

(Ref. 1,2,3,4,5)
Type of NBS project
NBS domain and interventions
Ecological domain(s) where the NBS intervention(s) is/are implemented
Green areas for water management
Sustainable urban drainage systems
Nature on buildings (external)
Green roofs
Parks and urban forests
Pocket parks/neighbourhood green spaces
What is the level of innovation / development of the NBS related to water management?
Vegetation Type
Please specify how many trees were planted
97 trees were planted (Ref. 5)
Services
Expected ecosystem services delivered
Provisioning services
Water (surface and ground water for drinking and non-drinking purposes)
Regulating services
Local climate regulation (temperature reduction)
Water purification / filtration
Cultural services
Aesthetic appreciation
Recreation
Spiritual and / or emblematic (symbolic, sacred and / or religious)
Scale
Spatial scale
Sub-microscale: Street scale (including buildings)
Beneficiaries
Primary Beneficiaries
Please specify "other primary beneficiary"
Even though the sky garden is open to public, its main users are the people who work in the building and engineers or people who work in related fields. The council provide various services associated with engineering profession.
Governance
Governance arrangements
Non-government actors
Public sector institution (e.g. school or hospital)
Please specify the roles of the specific government and non-government actor groups involved in the initiative
The land owner, project initiator and the project owner is the Council of Engineers of Thailand which is a statutory body.
The designer team that won the design competition includes Ativich, Atelier of Architects, TeamSQ, TeamG, Next2nd, 8.18, Africvs.

(Ref. 3,5)
Key actors - initiating organization
Please specify other key actors – Initiating organization
The Council of Engineers of Thailand, a statutory body
Land owners
Key actors - Other stakeholders involved (besides initiating actors)
Public sector institution
Private sector/corporate actor/company
Participatory methods/forms of community involvement used
Please specify other landowner
The Council of Engineers of Thailand, a statutory body
Policy drivers
NBS intervention implemented in response to an Regional Directive/Strategy
No
NBS intervention implemented in response to a national regulations/strategy/plan
No
NBS intervention implemented in response to a local regulation/strategy/plan
No
Mandatory or voluntary intervention
Voluntary (spontaneous)
Enablers
Presence of specific city-level GI/NBS vision/strategy/plan - mentioned in connection to the project
Unknown
Presence of specific city-level GI/NBS section/part in a more general plan - mentioned in connection to the project
Unknown
Presence of city network or regional partnerships focused on NBS - mentioned in connection to the project
Unknown
Presence of GI / NBS research project - mentioned in connection to the project
Unknown
Subsidies/investment for GI / NBS in the city - mentioned in connection to the project
Unknown
Co-finance for NBS
No
Co-financing governance arrangements
No
Financing
Total cost
What is/was the Cost/Budget (EUR) of the NBS or green infrastructure elements?
Unknown
What are the total amount of expected annual maintenance costs?
Unknown
What is the expected annual maintenance costs of the NBS or GI elements?
Unknown
Please specify cost savings
Unknown
Please specify total cost (EUR)
The total cost of the building construction including the creation of the sky garden was approximately 7,6 million EUR (Ref. 9)
Source(s) of funding
Type of fund(s) used
Non-financial contribution
Unknown
Please specify other Business model
Sustainable building development
Business models
Which of the involved actors was motivated by this model?
Please specify technological innovation
The building's main concept revolved around the "flying box" idea, which integrates advanced structural engineering design with multimedia technology. Additionally, the building "floats" in a gigantic public park, showcasing the ecosystem of the environment. The advanced engineering design is present in all elements of the building, including the park's ecological system and energy-saving inventions. (Ref. 5)
Please specify social innovation
To find the best architectural design that suitable for them missions, COE created an open to public architecture design competition. The Competition announced winner in May 2019 and
Selected AATTN8A’s conceptual design which researched and replanning all function to increase more efficiency use and transformed unusable area to public. The new COE Building was also planned to be a hub for innovators and people, and also a node and a place where local people can live their life. (Ref. 5)
Please specify novelty level of the innovation
It is considered to be an iconic building of a non-profit organization who thought about social responsibility and wellbeing. These are clearly
expressed by the vision of the architectural design that is to “Represent the Future Engineers with Architecture and Technology” (Ref. 5)
Replicability/Transferability
Impacts, benefits
Description of environmental benefits
- With the terraced design of the garden, the water feature and the fauna selection that includes only shrubs and trees the humidity of the area is increased contributing to lower local temperature. (Ref. 1)
- In the terraced garden aquatic plants were planted that are connected to the wastewater treatment system of the building circulating and filtering water. The water that passes through the bio-filter system in this area is grey water from the building such as water from hand washing. The grey water first passes through the main water treatment system in the building before being pumped into the upper pond for second filtration.This natural wastewater treatment system with aquatic plants removes pollutants from wastewater and improve water quality. The treated water goes to the underground reservoir where it is stored for the watering of the garden.
- These retention tanks beneath the zig-zag walkway also play a role in the collection and storage of rainwater by holding back the stormwater, thus preventing rainwater to overburden city's waste water system causing flooding.
Promotion of naturalistic landscape design: The new headquarter also designed with urban responsibility by improves the urban environment by increase trees in the city and reduce heat islands.
Increased green space: 41% of the site is green area that is available for the public as well as workers in the new Council of Engineers building. Accordingly, the open green space in the neighbourhood increased with 1305 m2.
Increased number of species: The garden includes normal planting beds with trees and shrubs, and overflow ponds with aquatic plants. With this, the number of species present in the area increased.
(Ref. 1,3,5)
Economic impacts
Description of economic benefits
Unknown
Description of social and cultural benefits
- With the creation of the Skygarden as a public green space, the access to green area within the a busy residential area increased.
- The top floor of the open space is a multi-functional area where people can hold events or gatherings.
- All green areas are connected with either slope or stairs. The designer intentionally use steps and provide maximum shades to encourage people to move outside which is good for their health.

(Ref. 1,3,5)
Type of reported impacts
Indicators
- Number of species present
- Water retention capacity
Analysis of specific impact categories
Job creation: The NBS created ...
Environmental justice: The implementation of the NBS project resulted in ...
Negative impacts: Did the project cause any problems or concerns?
No information was found regarding negative impacts of the project
COVID-19 pandemic
Unknown as of April 2023
Methods of impact monitoring
Process of recording NBS impacts
Methods used to evaluate the impacts of NBS
Evidence for use of assessment
Presence of an assessment, evaluation and/or monitoring process
Unknown
Presence of indicators used in reporting
No evidence in public records
Presence of monitoring/evaluation reports
No evidence in public records
Availability of a web-based monitoring tool
No evidence in public records
Impact assessment mechanism
Name of any specific impact assessment tools
Unknown
Use of GIS in mapping impacts
No evidence in public records
Citizen involvement
Citizens involvement in assessment/evaluation
Unknown
Citizens involvement in the analysis of the assessment/evaluation
Unknown
Follow-up to the evaluation / assessment
Unknown
References
List of references
1. Gapthanavate (2023), Council of Engineers : อาคารเขียวชนะรางวัล...เปลี่ยนเมือง ด้วยมุมมองใหม่, Available at https://www.youtube.com/watch?v=hj66R9YHt0o&t=72s (Accessed 20-02-2023)
2. Ativich (2022), Designer Talk Ep.3, Available at https://www.facebook.com/ativichstudio/videos/1088830841686853 (Accessed 20-02-2023)
3. Council of Engineers (2022), อาคารที่ทำการสภาวิศวกร, Available at https://www.facebook.com/coethailand/photos/a.108208687412134/578610320371966/ (Accessed 21-02-2023)
4. 8.18 (2022), Landscape Design [Presentation], Designer Talk Ep.3, 22 March
5. ATTN8A (2022), The New Headquarter of Council of Engineers Thailand [Presentation], Designer Talk Ep.3, 22 March
6. Thai Green Building Institute (2021), TREES-NC, Available at https://tgbi.or.th/uploads/trees/2017_03_TREES-EB-Eng.pdf (Accessed 22-02-2023)
7. Ativich (2022), สภาวิศวกร, Available at https://www.facebook.com/photo?fbid=593615629435947&set=pcb.593688892761954 (Accessed 23-02-2023)
8. 8.18 (2022), Design team : AATTN8A, Available at https://www.facebook.com/permalink.php?story_fbid=pfbid02HtW3YaaJZni2YPq4LJP8cvorZF3sfbn6WV4LcKyRti7xHVSHEvZNcr8mSFRz52Mcl&id=154802864960950 (Accessed 23-02-2023)
9. Siam Multi Cons, (2020), ก่อสร้างอาคารที่ทำการสภาวิศวกร, Available at https://www.smc.in.th/project_detail.php?project_id=83 (Accessed 23-02-2023)
Attachments
Attachment Size
Landscape Design Presentation by 8.18 Studio (1.65 MB) 1.65 MB
Overall Design Presentation by ATTN8A (5.71 MB) 5.71 MB
Additional comments
The documents are provided in the comment section of Ref.2
Comments and notes
Comments
The project is very new and just finished last year therefore there are limited sources. Most of the sources are video and seminar/talk by the designers.
Additional insights
The manual/protocal mentioned in ‘monitoring indicators’ is not shared to public yet.

Environmental impact/benefit
- Lower outdoor and indoor temperature
- Filter and reuse surface water
- Enhance local biodiversity

Social impact/benefit
- Enhance social interaction
- People can relax

Economic impact/benefit
- Lower building temperature leads to lower energy consumption

(Ref. 1,2,3,4)

The cost for overall project construction estimated to be 280,000,000 Baht.
Ref. Siam Multi Cons, (2020), ก่อสร้างอาคารที่ทำการสภาวิศวกร, Available at https://www.smc.in.th/project_detail.php?project_id=83 (Accessed 23-02-2023)
Public Images
Image
Council of Engineers Thailand - Overall Sky garden
Council of Engineers Thailand - Overall Sky garden
Source: Ref.8
Image
Council of Engineers Thailand - Stepped garden
Council of Engineers Thailand - Stepped garden
Source: Ref.8
Image
New Council of Engineers Thailand Building
New Council of Engineers Thailand Building
Source: Ref. 3
Image
Council of Engineers Thailand - Bio-filtration
Council of Engineers Thailand - Bio-filtration in the sky garden
Source: Ref.8