Green Roof Construction Ppt

Quality of the roof structure 5.

Green roof construction ppt.

One of the most famous ancient green roofs was the hanging gardens of babylon constructed around 500 bce. Green roofs at the building rooftop are old techniques. A green roof is a green space that is created by adding various layers of plants and a growing medium to the top portion of a traditional roofing system. A green roof is a planted roof top container gardens on roofs are not generally considered to be true green roofs.

Because water runs off the roof more quickly a thicker substrate layer is needed. At ancient times people constructed the green roofs on the rooftops as the rooftop gardens for insulating qualities and to reduce the adverse effects of urbanization. Green roof definition 2. Steeply pitched green roof 25 40.

Note that it is not like a traditional roof garden in which planting is done in free standing containers as well as planters that are placed on an easy to access roof terrace. Green building construction materials green building materials are modernly effective and green facility far exceed any short term cost. The structure of a shallow pitched green roof differs slightly from the structure of a flat roof. Anatomy of green roof 6.

Green roof economics benefits costs npv net present value benefits costs rinaldi buffam et al. In prep assumes a 40 year lifespan of the green roof and a 20 year lifespan of a conventional roof model based in cincinnati with cso s present largest cost of green roof is related to installation but roof replacement costs are reduced. The substrate gives the right amount of nutrients to the plants so your green roof stays nice and green. Green roofing a tool for ecological engineering andrew l myrthong 2014 12 126 dept.

Green roof presentation 1. Flat roof systems consist of a supp. As green roofs contain living and growing materials a protection layer and a root barrier are one of the most important elements of the assembly. Aravind mbbs i year dsmch perambalur 2.

History of green roof 3. As roots grow they can penetrate the waterproofing membrane and create leak locations. Green roofing technology m. Primary green roof costs are related to installation and maintenance.

Plants for green roof 7. How green buildings are built furthermore the design must also take into account where shading comes from in order to hold the building itself well lit but keep air conditioning costs down. The root barrier placed above the membrane ensures that no roots pass through and harm the membrane. Living roofs vegetated roofs eco roofs roof gardens definition.

Gsa s green roof report estimated that green roofs on commercial and public buildings provide a payback based on 50 year average annual savings of about 6 2 years nationally internal rate of return of 5 2 and an roi of 224 based on a net present value of 2 7 square foot.