GREEN BUILDINGS

TOPIC -

GREEN ROOF and EARTHERED SHELTER

A green roof or living roof is a roof of a building that is partially or completely covered with vegetation and a growing medium, planted over a waterproofing membrane.

It may also include additional layers such as a root barrier and drainage and irrigation systems.

Container gardens on roofs, where plants are maintained in pots, are not generally considered to be true green roofs, although this is debated.

Rooftop ponds are another form of green roofs which are used to treat grey water.

Environmental benefits• Reduce heating.

• Reduce storm water run off[

• Natural Habitat Creation

• Filter pollutants and carbon dioxide out of the air 

• Filter pollutants and heavy metals out of rainwater

• If installed correctly many living roofs can contribute to LEED points

• Increase agricultural space

Chicago City Hall is the official seat of government of the City of Chicago in Illinois, United States.

In 2001, 38,800 Square feet roof gardens were completed serving as a pilot project to assess the impact green roofs would have on the heat island effect in urban areas, rainwater runoff, and the effectiveness of differing types of green roofs and plant species for Chicago's climate.

 The Garden consists of 20,000 plants of more than 150 species, including shrubs, vines and two trees.

BY- green" architect William McDonough.

With an abundance of flowering plants on the rooftop, beekeepers harvest approximately 200 pounds of honey each year from hives installed on the rooftop

CHICAGO CITY HALL

EARTHED SHELTER

Earth sheltering is the architectural practice of using earth against building walls for external thermal mass, to reduce heat loss, and to easily maintain a steady indoor air temperature

EARTHED SHELTER

• Icelandic turf houses , were the product of a difficult climate, offering superior insulation compared to buildings solely made of wood or stone, and the relative difficulty in obtaining other construction materials in sufficient quantities.

• 30% of Iceland was forested when it was settled, mostly with birch.

• Oak was the preferred timber for building, but native birch had to serve as the primary framing material on the remote island. However, Iceland did have a large amount of turf that was suitable for construction. Some structures in Norway had turf roofs, so the notion of using this as a building material was not alien to many settlers.

ICE LAND TURF HOUSES

• The first evolutionary step happened in the 14th century, when the Viking style longhouses were gradually abandoned and replaced with many small and specialized interconnected buildings.

• Then in the late 18th century a new style started to gain momentum, the burstabær, with its wooden ends or gaflar.

• This is the most commonly depicted version of the Icelandic turf houses and many such survived well into the 20th century.

• This style was then slowly replaced with the urban building style of wooden house clothed in corrugated iron, which in turn was replaced with the earthquake resistant reinforced concrete building.