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.

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. 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. Naturally the weight is greater appx. 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.

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. 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. Tpo roof membrane 60 mil fully adhered membrane only 0 29 lbs. Steel roof deck 22 gauge corrugated.

One can literally create a prairie or shade garden on the roof. Such roofs will retain more water than roofs with greater slope. 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.

This is all of the natural stresses imposed upon a roof such as snow loads rain loads and wind loads. Step 3 determine the transient load of the roof. 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. Calculate the live load of the roof.

Stone coated steel roof tiles 26 gauge. Thatch approximate typical weight 7 lbs. 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. 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 inch per 1 foot which is the norm minimum roof slope for drainage. Practically speaking soil acts as a sponge. 1 lb m ft 2 4 88 kg m 2. The live load on a roof is the weight of any temporary objects on the roof.