Collaborative Green Building Design for Mixed Development Project

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Conceptual 3D Image

1. Introduction to the Project

Proposed mixed development is a Green Building project which done for the final evaluation of the Associate Professional Training Course by Green Building Council of Sri Lanka. The building has design under seven Green Building aspects including;
  •  Management (MN)
  •  Sustainable Sites (SS)
  •  Energy and Atmosphere (EA)
  •  Materials and Resources (MR)
  •  Indoor Environmental Quality (EQ)
  •  Innovation and Design Process (ID)
  •  Social and Cultural Awareness (SC)
The Design concept was "Finding solutions to cater user friendly spatial quality applying green building techniques at maximum level within the limitation of other factors such as site constrain, Regulations  and existing context". Design Consideration to Achieve the Concept was;
a. Building envelope, Orientation of the building, placement of windows and skylights in an appropriate manner and bridge connection from the new building  to combine the two existing buildings.
b. Public areas provided with natural lighting and ventilation. All other possible areas are provided with natural ventilation. Building is cooled with cross ventilation and stack ventilation. 

1.1 Project Brief
Client: KINDA Holdings (Pvt) Limited
Building Type: Mixed Development Project with Commercial Offices, Shopping Malls & Residents
Investment: LKR 800M
Land: 8000 m2 extend land in Nawala, Colombo, Sri Lanka
Design Team: TESSERACT CONSULTANTS - 8 GBCSL APs are included with one Architect, one Landscape Architect, two MEP Engineers, one Civil Engineer, one Structural Engineer, one Quantity Surveyor and Sustainable Consultant

1.2 Architectural Brief
Approximate floor area: 15000 sq. meters
Major Elements:   Office & Commercial area 1500 sqm
Residential Area 11500 sqm Including  two BR houses & Three BR houses  
         Children play area
         Indoor Parking  1500 sqm
Building foot print:  2000 Sq. Meters

Precedence Studies

1.3 Design Analysis
Design constraints on site
  •        Land Extent 2000 sqm
  •        Existing  two RC building s of  1000 sqm (500 sqm each)
  •        One Boundary  (East)is  adjacent  to the Canal
  •        Other Two Boundaries are (West &  North) are Kirimandala Mawatha & By Road 
Rules and regulations to be considered
  •         UDA regulations  - Street lines ,Rear Space, canal Reservation, Parking requirements      & other applications
  •          Zoning Requirements as per 2008 – 2020 Colombo development plan
  •         Special needs requirements as per Ministry of Social affairs
  •         Land reclamation Guidelines
Context
  •         Physical Context  - Existing character of the buildings
  •         Socio Cultural context – Composition of community, close public utility etc.
2. Architectural and Landscape Design

2.1 Existing Site

    The selected site lies on the Kirimandala Mawatha in a close proximity to the Kirulapana town. The left hand boundary of the site is Kirulapana Canal, right hand boundary is a by road to the Kirimandala Mawatha and rear boundary is a residential zone.
     The are several developments within 1 km distance to the site such as Hospitals, Institutes, Schools, Religious Places, Food Cities, Restaurants, Banks so on. Within a 0.8 km there is the Narahenpita railway station and all public services are supportive to the selected site.


Community Development Density

In the selected site there is a building in a vulnerable situation. We proposed to demolish it and re-use the materials of existing building to the proposed building. On the rear space there is a small water gathering area which can be converted to a water pond. 

2.1 Architectural Design


In the ground floor there are two rentable office spaces with 250sq.m of a each. Playing area, outdoor seating area, outdoor parking for office vehicles and 72 indoor parking units for residents are the other design spaces in ground area.
The first and second floor consist with four housing units with 150sq.m space of a each, rentable office spaces by refurbishing the existing building and void space for air circulation. There is a rood top and swimming pool in the first floor level.
Third to eighth floor there are eight housing units. Eighth to tenth floor there are four housing units similar to the first and second floor. The top of the existing refurbished building will converted to a green roof. The roof top is allocated for rain water harvesting and solar power.

2.1 Landscape Architectural Design
Landscape Design in Ground Floor, First Floor and Eighth floor

The first floor and eighth floor consists with Green Roofs. Further, vertical green areas are proposed. The proposed irrigation system is a sprinkler system.


3. Considered other Green Aspects
  • Storm water design
  • Light pollution reduction
  • Material selection
  • Water efficient landscaping
  • Water efficient in air condition system
  • Innovative waste water technologies
  • Water use reduction
  • Innovative water transmission
  • Energy building design
  • Energy consideration
  • Renewable energy
  • System for energy performance of the building
  • Outdoor air delivery monitoring
  • Increased ventilation
  •  Indoor chemical & pollutant source control
  • Thermal comfort, design & verification
  • Daylight & views
  • Living roofs and facades
  • Light emitting diodes (LED)
  • DecoSHADE one way vision architectural decorative glass
  • Social well-being, public health & safety
  • Waste management 
Special thanks to the whole project team!


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