Green Roof Concrete Slab Thickness

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Green roof concrete slab thickness.

Reinforced concrete slabs are heavier and generate higher seismic forces in an event. For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers. Composite decks comprise a polyisocyanurate pir insulation core factory adhered onto a profiled steel liner sheet with a variety of top sheet options. Insulated panel with a membrane top sheet.

Woodwool cement slabs should conform to bs en 13168 and be a minimum thickness of 50mm. A solid slab of concrete capping the top of your house. Such slabs left unconnected to walls caused many deaths in the 2005 quake from school roof collapses. The course will be launched at the fifth annual international greening rooftops for sustainable communities conference april 29 may 1 2007 in minneapolis.

Determine minimum allowable slab thickness based on l 28. Plywood used for roof decks is generally 18mm thick but it is possible to specify a minimum 15 mm if the supporting structure is more closely spaced. Green roof design background goals. The nominal thickness of a green roof is the approximate total height of the soil and drainage components that constitute the green roof system excluding the roof structure insulation waterproofing and plants it is common practice to use the term extensive to describe green roofs that are very thin and will only support hardy drought resistant vegetation.

If reinforced concrete were to be reused strong connections would have to be made between roof and walls. Green roofs allow energy saving due to a reduction in summer air condi tioning of 25 let alone the fact that the heat resistance of green roofs is higher and benefits are also gained in terms of winter heating in germany more than 10 of roofs are green roofs. Flat roofing solutions bauder flat roofs. Use tables in chapter 7 of the crsi design handbook.

In the city of chicago alone a weston design consultant study estimates the. A concrete roof is exactly what it sounds like. Exact specifications vary but most concrete roofs are several inches thick. A one way concrete slab system with beams and girders.