Live Roof Weight

Roofstone follows the roof contour and can be used to create walkways patios and landing areas on most non ada compliant roofs.

Live roof weight. 40 50 pounds per square foot depending upon soil and plants but the weight is not so heavy as to greatly drive up the cost of the supporting structure. L live load symbol l r live roof load symbol lrfd load and resistance factor design r rainwater load or ice water load. With 6 inch soil depth it becomes possible to support a broad array of non succulent plants. Such roofs will retain more water than roofs with greater slope.

Where snow isn t a problem the live load can come from people working on the roof and any equipment they take on to the. This is inch per 1 foot which is the norm minimum roof slope for drainage. Roofstone can also be used on roofs that must be ada compliant with slope up to 1 48 which equals 2 08 or 1 19 degrees. This is all of the natural stresses imposed upon a roof such as snow loads rain loads and wind loads.

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. Naturally the weight is greater appx. 1 lb m ft 2 4 88 kg m 2.

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. Practically speaking soil acts as a sponge. 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. Steel roof deck 22 gauge corrugated.

One can literally create a prairie or shade garden on the roof. Western states metal roofing. The weight of truss rafter must be added to calculate the dead load of the roof. This is because soil holds water by cohesion but there is a limit to how much cohesive force soil can provide.

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. Step 3 determine the transient load of the roof. Tpo roof membrane 60 mil fully adhered membrane only 0 29 lbs. Stone coated steel roof tiles 26 gauge.