Green Roof Concrete Slab Thickness

The course will be launched at the fifth annual international greening rooftops for sustainable communities conference april 29 may 1 2007 in minneapolis.

Green roof concrete slab thickness.

In the city of chicago alone a weston design consultant study estimates the. 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 roofs for healthy cities grhc is developing a course on waterproofing and drainage as it relates to green roof design and implementation. 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. Reinforced concrete slabs are heavier and generate higher seismic forces in an event. Green roof design background goals. Insulated panel with a membrane top sheet.

For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers. 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. Determine slab thickness and ρ value based on minimum slab thickness clear span and factored loading. A concrete roof is exactly what it sounds like.

Exact specifications vary but most concrete roofs are several inches thick. Flat roofing solutions bauder flat roofs. Composite decks comprise a polyisocyanurate pir insulation core factory adhered onto a profiled steel liner sheet with a variety of top sheet options. A solid slab of concrete capping the top of your house.

Use tables in chapter 7 of the crsi design handbook. Flat roof design guide. Determine minimum allowable slab thickness based on l 28. If reinforced concrete were to be reused strong connections would have to be made between roof and walls.