Live Roof Weight

L live load symbol l r live roof load symbol lrfd load and resistance factor design r rainwater load or ice water load.

Live roof weight.

Tpo roof membrane 60 mil fully adhered membrane only 0 29 lbs. The load increases with the use of heavier roofing material. W wind load symbol force due to a weight name for total force due to distributed load j density or unit weight design codes in general design codes are issued by a professional organization interested in. This is because soil holds water by cohesion but there is a limit to how much cohesive force soil can provide.

Thatch approximate typical weight 7 lbs. All roofs must slope in order to drain and what most people refer to as a flat roof will have a slope of per 12. If you live in the us our snow load calculator compares the total weight on your roof with the permissible load calculated according to the standards issued by the american society of civil engineers regarding the minimum design loads for buildings and other structures asce7 16. This is determined by adding the weights of any individuals who may work on the roof and the combined weight of all tools and equipment used by those workers.

Steel roof deck 22 gauge corrugated. The dead load of a typical asphalt shingled wood framed roof is about 15 pounds per square foot. Calculate the live load of the roof. Asphalt shingle or asphalt fiberglass composite shingle 2 7 lbm ft2 13 2 kg m2 metal roofing aluminum or steel panel sheet or shingle 1 2 lbm ft2 5 9 kg m2 terne plate copper bearing steel sheet 0 7 lbm ft2 3 4 kg m2 wood shingle or shake 2 4 lbm ft2 11 7 kg m2 zinc roofing 1 6 lbm ft2 7 8 kg m2.

Maximizes storm water management and integrates perfectly with both new construction and existing buildings liveroof deep. Thats the weight it ll be when there is just itself up there a live weight is stuff like water rain snow or the bloke on a ladder trying to install a satellite dish. For retrofit projects where load limitations exist. Step 3 determine the transient load of the roof.

Practically speaking soil acts as a sponge. Such roofs will retain more water than roofs with greater slope. This is all of the natural stresses imposed upon a roof such as snow loads rain loads and wind loads. I found online is that living roofs can weight anything up to 150kg per sqm so i asked our builder and engineer to work to a dead weight of 150kg whats a dead weight i hear you ask well.

Each inch of water weighs approximately 5 2 pounds per square foot so at maximum water detention the blue roof solution would add up to 18 2 pounds per square foot of load to the weight of the green roof modules find saturated weights here. Western states metal roofing. A clay tiled roof may have a dead load.