Flat Roof Dead Load Calculator

For roofs that are flat and with ground snow loads lower than 20 pounds per square foot the roof snow load is equal to 70 of the product of the exposure thermal and importance factors and the ground snow load.

Flat roof dead load calculator.

Steel beam calculator ltd was set up in 2011 to enable building industry professionals to design safe and effective steel beams more quickly and affordably. The following table provides typical weights dead load self weight for various roofing materials where possible the values were taken directly from manufacturer technical data sheets and are the actual weights of specific representative products. Schedule of permanent loads commonly found in residential properties. Length and width of your roof.

You can enter these values in any units you d like including meters and feet. The standard guide in the u s the asce 7 05 lists weights and stresses for all building materials expressed in pounds per square foot. For ground snow loads greater than 20 pounds per square foot the roof load is equal to. V t a.

Calculating the load on a flat roof is a challenging task for the layperson that involves knowledge of building materials their weights and local building codes. Span calculator for wood joists and rafters also available for the android os. Step 4 determine the flat roof snow load. So the calculation becomes.

Location 2uniform load psf kn m roofs ordinary flat pitched and curved roofs roofs used for roof gardens roofs used for assembly occupancies. Flat roof asphalt finish. If your roof is pitched enter the length and width of the flat area covered by the roof. Standard loads of materials.

D dead load symbol. 1 enter joist details 1 1 span and joist spacing. You need to supply the following information. The values for dead loads in table 3 2 are for commonly used materials and constructions in light frame residential buildings.

To calculate the weight of snow on a roof use the first two sections of our snow load calculator. 3 3 dead loads dead loads consist of the permanent construction material loads comprising the roof floor wall and foundation systems including claddings finishes and fixed equipment. Account that the volume is a thickness times an area. The dead load on a roof is the weight of the roof structure itself along with any permanently attached materials or structures on the roof so it must be designed first of all to support itself.

Flat roof joist calculator.