Green Roof Weight Psf

Small trees up to 6 m.

Green roof weight psf. Pounds per square foot lb ft 2 pounds per square 100 sq. Asphalt shingles 3 tab or strip 1 95 lbs. Weight loading kg m 2 low herbaceous succulents and grasses 10 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.

Medium trees up to 10 m. Therefor a significant amount of attention must be paid to the various. Mid range 5 inch systems weigh approximately 34 pounds per square foot and are compatible with wood or steel decks. They support hearty native ground cover that requires little maintenance.

When preparing a green roof calculations must always be based on the water saturated weight of the total structure. The weights of other actual products of the same type may vary. Green roof vegetation weight loadings. Thus the saturated weight of a 3 inch deep system is about 20 pounds per square foot including a mature plant cover.

Green roof system weights columbia green technologies 79 se taylor st. These are the weights of typical actual products. Ft kilograms per square meter kg m 2 source. Heavier intensive green roofs generally require a concrete supporting deck.

Tray systems are not a viable option for intensive roofs due to the weight. Shrubs up to 3 m. Green roof vegetation type. Weight of roofing materials.

Large trees up to 15 m. Perennials and low shrubs up to 1 5 m. 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. Extensive green roofs are relatively light at 15 50 pounds 7 23 kilograms per square foot.