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Greenprint Your Home: With 80% of the fittings from demolished houses, wood reused from scrap dealers and second hand household appliances, Kachra Mane gives a whole new meaning to the word 'trash.' More at www.thealternative.in/greenprint-your-home
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• Ideas for Reuse, Reduce in Construction
• Used in a home that's 2 years old and still standing.
• Extend the tenets of environment-friendly living to construction.
• Reduce, Reuse
• Reduce : Reduce the consumption of material – tiles, cement, steel, wood, etc.
• Reuse : Reuse construction material fom demolished buildings.
Problem 1 – Overdesigned structures
How many years will this structure last ?
How many years will it be allowed to last ?
Average house is built to last a couple of thousand years, but is typically broken down in 25 years because the next generation’s requirements have changed.
Problem 2 – Skewed priorities
Essentials - water, power, fresh air, greenery.Rain water harvesting, grey and black water harvesting, solar panels for
power, trees.
Non-essentials : Floor tiles, expensive walls, unnecessary concrete decor, jacuzzi.
We spend on non-essentials. If there is any money left over, we spend on essentials. Should be reverse.
Reduce 1 – No concrete roof
Bamboo corrugated sheet instead of concrete roof.
Concrete roof traps heat during day, radiates it at night,gets hot. Bamboo roof does not trap heat.
Reduce 2 – No airconditioners
Fans instead of air-conditioners.
Because no concrete roofs, no walls, lots of windows.
Reduce 3 – No exhaust fan in kitchen
Natural draught instead of exhaust fan.
Opening above the kitchen platform for exhaust.
Reduce 3 – No flat, smooth walls
0.25” plaster instead of 1.5” plaster on walls.
Walls are ordinary (not wire-cut) brick. Our walls are not flat, undulate with the shape of the bricks.
Cement and sand for plastering reduced by 75%.
Reduce 3 – No tiled floors
Plain grey cement floors instead of tiled floors.
Saving : Rs. 2 Lakhs.
Reduce 4 – No walls
Walls are meant to keep the weather out.Windows are meant to let the weather in.
Bangalore has pleasant weather through the year, there's no need to keep it out. Hence no walls.
Bonus : Birds and animals for company.
Reuse 1 – Wood from packing cases
Wood : Pine wood from packing cases.
Reuse 2 – Glass from demolished buildings
Glass for walls, windows : 75 % from demolished buildings.
Reuse 3 – Reused toilet fittings
Commodes, washbasins, taps showers from demolished buildings.
Fittings for 2 toilets cost Rs. 7000. New would have cost Rs. 50,000.
Reuse 4 – Reused kitchen sinks
Kitchen sinks from demolished buildings.3 sinks cost Rs. 5000. New would have cost Rs. 25,000.
Reuse 5 – Lamp shades from dust bins / footpath
Savings : 75 % cheaper.
Reuse 6 – Discarded paving stones from footpaths
Granite paving stones in garden are discards from city's footpaths – they were replaced by tiled footpaths.Savings : 90 %.
Reuse 7 – Rain water harvesting, grey water harvesting
Rain water harvesting tank capacity 20,000 l. - 4 times the legal requirement.Grey water harvesting – water for garden.Black water harvesting proposed.
The net result
Construction cost : 40 % of normal. Rs. 17 Lakhs.Construction time : 50 % of normal. 7 months.