Weight of roofing materials.
Green roof weight psf.
The company s website lists weights from about 18 psf to a little over 45 50 psf or so.
Weight 1 9 2 6 gal sq h2o ret.
Ft kilograms per square meter kg m 2 source.
These are the weights of typical actual products.
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.
Asphalt shingles 3 tab or strip 1 95 lbs.
The type of green roof in question is engineered to be light and doesn t have typical soil with plants see link above.
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.
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.
On a roof with a slope greater than 4 to 12 the live load limit is typically adjusted downward from 20 psf to 15 psf to allow for the relatively greater dead load on the steeper roof.
Green roof system weights columbia green technologies 79 se taylor st.
Tray systems are not a viable option for intensive roofs due to the weight.
The weights of other actual products of the same type may vary.
Therefor a significant amount of attention must be paid to the various waterproofing and root barrier details.
When weight is good by chris wark energy editor originally posted september 21 2010.
Green roof energy series part 4.
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 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.
When preparing a green roof calculations must always be based on the water saturated weight of the total structure.
Pounds per square foot lb ft 2 pounds per square 100 sq.
