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GREEN HOMES …..process to product

Space Matrix Design Consultants Pvt. Ltd.

22nd Jun’13

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Sustainable living is a philosophy of modern living based on economy,

technology, environmental preservation and social values withoutsacrificing comfort

Source: Soontorn Boonyatikarn et. Al, Bangkok

3Man as a Sustainable beingHot - Humid

Hot - Dry

4What is Sustainable What is Sustainable Architecture ?Architecture ?

• Site analysis and development• Climatological design• Building form and Orientation• Passive heating and cooling• Ventilation and indoor air quality

• Building materials • Embodied energy• Thermal performance• Water management• Waste management• Energy management

Sustainable architecture is building design that accounts for all aspects of the building that will affect and be affected by the environment. It looks at a holistic design approach based on the following factors:

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With 3.85 billion years of experience the natural world is the only global and reliable guide we have to judge our actions.

Constant 29Degrees

2 – 45 degrees

- Internal temperature varies by only 1 degree- The equivalent of a 2km high building- Breathes similar to a human lung- Captures natural air flow- Fire and water resistant

Nature : Mentor, measure, model

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Green Features for HomesProcess…

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Maximise Human Comfort

Efficient Planning

Design for Change

Minimise Running Costs and Energy Consumption

Maximise Usable Space

Minimise Capital Cost

Minimise Maintenance Costs

Protect and Enhance Ecological Values

Design Objectives

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Master Planning

Secured by Design

Landscape & ecology

Community involvement

Micro-climate

Living Streets (e.g..Shared surfacing)

Movement & Permeability

Adaptability & Flexibility

Resource management[Energy, water ]

Place making

Waste management

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Structures

Buildability Structural Efficiency

Embodied Impacts

Maintainability

Prefabrication

Adaptability/Flexibility

Precision Engineering

Waste Management

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Materials Resource Strategy

Re-use building components Recycled materials

Responsible wood suppliers

Low embodied energy

The site as the source/local materials

Longer product life

Reduce quantity of materials used

Waste management during construction & operation

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Green Features for HomesProcess…

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Site Efficiency • Site should be near public transit and household services and accessible by pedestrian pathways.

• Design to have minimal footprint – compact design and stacking floor plans. Retain natural landscape and trees, minimize hard paving on site.

• Design common areas for social activities within the site.

• Reduce heat island effect by providing covered parking or basement parking.

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Water Efficiency

• Rainwater harvesting – Employ techniques to capture rainwater and filter it through screens or paper filters.

• Minimize indoor water usage by installing water efficient plumbing fixtures.

• Limit the use of turf throughout the site. Instead, select species that are well-adapted to the micro-climate. Also, consider xeriscaping as an approach to landscaping.

•Provide efficient irrigation techniques such as central shut-off valve, sub meters, moisture sensor controller etc.

• Provide on-site grey water treatment system. Treat it to standards suitable for flushing and irrigation purposes.

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Energy Efficiency

• Adapt energy efficient design – building orientation to be such that the longer axis is in the N-S direction. Minimize E-W exposure. This will take advantage of natural daylight and air movement. Provide shading devices over windows along the S and W facades. Use Low-e double glazing to reduce heat gain.

• Use energy efficient lighting, heating and cooling equipment.

• Provide solar water heating system to satisfy hot water requirement.

• Energy Efficient Lighting Systems – In the interiors and exteriors use efficient fittings such as CFLs, T5 lamps, light emitting diodes etc.

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Energy Efficiency

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Materials • Specify products that contain recycled content such as fly ash blocks, glass, steel, cement, tiles, aluminum and composite wood.

• Use rapidly renewable materials such as bamboo, agrifiber, linoleum, wool, cotton insulation.

• Use locally manufactured materials.

• Encourage the use of salvaged materials and products such as flooring, paneling, doors, frames, furniture, brick, etc.

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Indoor Air Quality• Ensure connectivity between the interior and exterior by providing good day lighting and views. Orient the buildings such that max. day lighting to all spaces is achieved for most part of the day.

• Have adequate window openings that will allow for cross ventilation.

• Materials like paints and adhesives should have low emissions.

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Green Features for HomesProduct…

19Chowtara Mane, Mangalore :• Large voids & courtyards to enhance ventilation• Pool – water body for evaporative cooling• Rain water harvesting •Orientation to cut down heat

20Residence for Rashmi Hedge, Bangalore:• Extensive internal landscape• Varying volume within the house – helps to moderate the internal temperature•Skylight for natural light •Large overhangs and recessed outdoor spaces

21Dhunjibhoy Farmhouse :• Layering and scaling of the built form. • Central axis was used to penetrate all these layers connecting the outside to the inside • Deep verandah act as an interface between the outdoor and the indoor. • Mud plastered verandahs to maintain a continuity from the outdoor to the indoor

22Praful Pillai Residence :• House is designed around the pattern of the land • Minimalist house accommodating the existing trees• Slight shift in the wall angle of the living room brings in dispersed light•Split level within the house cleverly transforms the volume into floor space

23Ashok Shetty’s Residence :• Indoor – outdoor connect • Large openings, maximising human comfort • Designed to retain large outdoor areas.

24Srinivasan’s Residence :• Indoor – outdoor connect • Soft light, maximising human comfort • Beer bottles used as wall features

25Dr.Rekha Residence :• Material Juxtaposition • Interplay of landscape indoor and outdoor•Continuity of space

26Need based Appropriate Architecture

• To preserve heritage of our PAST• Continuity with our past in our PRESENT

• Conserving energy for our FUTURE

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“What good is a house, if you haven't got a decent planet to put it on?”

- Henry David Thoreau