Green Roof Concrete Slab Thickness

Reinforced concrete slabs are heavier and generate higher seismic forces in an event.

Green roof concrete slab thickness.

A solid slab of concrete capping the top of your house. Exact specifications vary but most concrete roofs are several inches thick. 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. 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.

A one way concrete slab system with beams and girders. Flat roofing solutions bauder flat roofs. Green roofs for healthy cities grhc is developing a course on waterproofing and drainage as it relates to green roof design and implementation. 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.

Green roof design background goals. In the city of chicago alone a weston design consultant study estimates the. For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers. Determine minimum allowable slab thickness based on l 28.

Use tables in chapter 7 of the crsi design handbook. Composite decks comprise a polyisocyanurate pir insulation core factory adhered onto a profiled steel liner sheet with a variety of top sheet options. Flat roof design guide. The course will be launched at the fifth annual international greening rooftops for sustainable communities conference april 29 may 1 2007 in minneapolis.

Insulated panel with a membrane top sheet. Woodwool cement slabs should conform to bs en 13168 and be a minimum thickness of 50mm. Such slabs left unconnected to walls caused many deaths in the 2005 quake from school roof collapses. Download a range of our brochures to help support you in designing flat roofs green and blue roofs and photovoltaic solutions for your flat.