Step 1: Bottles,bottles everywhere!
When you make a clay brick, the time and energy used right from mixing the clay to baking it in the kiln and taking into account the firewood used for that, you will see that the bottle brick is far more energy-efficient.
The technology also reduces the carbon emission that happens during the baking of an ordinary brick . The heat generation from cement factories can also be reduced as this technology uses only five percent cement. The foundation for the entire construction is obtained from building waste and so the mountains from which granite is blasted out can be saved too..
PET Bottle can last as long as 300 years (undoubtedly longer than the cement used to bind the bottles together in the walls!).
The following picture is of an ecological house constructed in Honduras using some 8,000 PET bottles, in the process freeing up an estimated 12 cubic meters (m3) in the local landfill.
The house also features a living roof (sometimes called a green roof) of sod and turf. Such roofs not only have aesthetic appeal, but tend to insulate the house better than conventional roofs, lowering heating and cooling costs. They are also cheaper than conventional roofs.
When wet, the 102 square meter (m2), living roof of the casa ecol?can weigh as much as 30 metric tons (Mt, toneladas). The PET bottle walls can support the weight.