Ppd On Green Roof

The two main types of green roofs are extensive green roofs and intensive green roofs.

Ppd on green roof.

Layers of a green roof 7 8 vegetation growing medium. Intensive green roofs are essentially elevated parks. However they only allow for a restricted variety of hardy flora epa 2008 p. The popularity of green roofs has increased in the united states due to their many benefits while pretty green roofs serve a much greater purpose than simple beautification.

All three types of roofs require specific layers of roofing materials not found on regular roofs. It can be sloped or flat. While on the green roof lower pmv results 1. The basic anatomy of a green roof consists of vegetation growing medium filter membrane drainage layer waterproof root repellant layer roofing membrane support for plantings above thermal insulation vapor control layer and structural roof support.

A green roof also known as a rooftop garden or a living roof is a vegetative layer grown on a rooftop. Extensive green roofs are lighter require little maintenance and are able to be planted on sloped roofs. A green roof is a planted roof top container gardens on roofs are not generally considered to be true green roofs. Green roof presentation 1.

They can sustain shrubs trees walkways and benches with their complex structural support irrigation drainage and root protection layers. An extensive green roof on the other hand is a thinner lighter version that looks more similar to a standard roof. Container gardens on roofs where plants are maintained in pots are not generally considered to be true green roofs although. Green roof terrace is surrounded by 15 m high building creating shading effect while the light colored roof is directly exposed to weather conditions.

The green roof project at the municipal building is only one of many environmental projects being pursued by the borough of state college. The designer is referred to section 3 2 4 for information on using smps in series. The foot or more of growing medium needed for an intensive green roof creates a load of 80 150 pounds 36 68 kilograms per square foot. Green roofing technology m.

Unlike traditional black tar roofs green roofs reduce energy costs by absorbing heat instead of attracting it and. This project along with the other sustainability initiatives will be used as educational tools to encourage the adoption of sustainable practices by residents and commercial businesses in the borough. Green roofs can be combined with other stormwater management practices smps in series to meet the philadelphia water department pwd stormwater regulations stormwater regulations.