Green Roof Weight Psf

The type of green roof in question is engineered to be light and doesn t have typical soil with plants see link above.

Green roof weight psf. 6 8 depth 6 8 soil 35 55 psf sat. Gro featherweight the gro featherweight system is a novel solution for projects that have weight constraints or value engineered ve budgets. Green roof system weights columbia green technologies 79 se taylor st. The weight of a green roof can sometimes present a structural challenge but for controlling the flow of heat energy that weight is a big benefit.

The omni green roof is the lightest and most biologically diverse green roof on the market. Layered green roof systems. Intensive green roofs weigh from 35 pounds to beyond 100 pounds per square foot when dry it is all a matter of the soil depth which is affected by the amount of mounding that is used. The second trussed roof is designed for a dead load of 160kg m 2 and a live load of 40kg m 2.

Therefor a significant amount of attention must be paid to the various waterproofing and root barrier details. Asphalt shingles 3 tab or strip 1 95 lbs. Green roof system structure roofs with vegetation blankets consisting of herbs grasses wild flowers or host and nectar plants require a thicker substrate layer than a vegetation blanket consisting of only sedum plants. These are the weights of typical actual products.

Weight 1 9 2 6 gal sq h2o ret. Weight of roofing materials. When preparing a green roof calculations must always be based on the water saturated weight of the total structure. The company s website lists weights from about 18 psf to a little over 45 50 psf or so.

In as little as 15 pounds per square foot omni roofs can grow food crops native plants flowers perennials grasses woody plants and more. An interesting example of an intensive green roof is manaton the award winning private house on dartmoor that uses local meadow grass to blend the family home into the landscape. The weights of other actual products of the same type may vary. The venny green roof has shallow substrates on two types of roof the first roof is on shipping containers and is designed for a dead load of 250kg m 2 and live load of 100kg m 2.

Pounds per square foot lb ft 2 pounds per square 100 sq. When weight is good by chris wark energy editor originally posted september 21 2010. Ft kilograms per square meter kg m 2 source.