Live Roof Weight

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.

Live roof weight. 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. Naturally the weight is greater appx. L live load symbol l r live roof load symbol lrfd load and resistance factor design r rainwater load or ice water load. 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.

This is all of the natural stresses imposed upon a roof such as snow loads rain loads and wind loads. Steel roof deck 22 gauge corrugated. This is inch per 1 foot which is the norm minimum roof slope for drainage. With 6 inch soil depth it becomes possible to support a broad array of non succulent plants.

Thatch approximate typical weight 7 lbs. Stone coated steel roof tiles 26 gauge. Western states metal roofing. Calculate the live load of the roof.

Practically speaking soil acts as a sponge. The live load on a roof is the weight of any temporary objects on the roof. Such roofs will retain more water than roofs with greater slope. 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.

1 lb m ft 2 4 88 kg m 2. 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. 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. Tpo roof membrane 60 mil fully adhered membrane only 0 29 lbs.

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. The weight of truss rafter must be added to calculate the dead load of the roof. Roofstone follows the roof contour and can be used to create walkways patios and landing areas on most non ada compliant roofs. Step 3 determine the transient load of the roof.