Roof Dead Load

Remember these loads are distributed uniformly over the entire surface of the roof.

Roof dead load.

And 1 90 lb 2 2 psf 3 ply and gravel 5 6 psf ceiling 4 ply and gravel 6 0 psf acoustical fiber tile 1 0 psf roof sheathing 1 2 in. Of ceiling 1 5 psf 3 15 lb. The dead load on a roof is the weight of the roof structure itself along with any permanently attached. The live load on a roof is the weight of any temporary objects on the roof.

The unit weight of commonly used building materials are given in the code is 875 part i 1987. Building materials are not dead loads until constructed in permanent position. Gypsum board 2 0 psf 5 8 in. The values for dead loads in table 3 2 are for commonly used materials and constructions in light frame residential buildings.

In a few cases the weights we give were calculated using more general manufacturer data or taken from a non manufacturer source that we consider reasonably authoritative. The following table provides typical weights dead load self weight for various roofing materials. Ft dead load of roof of wood shingle construction 10 lbs. Where snow isn t a problem the.

Dead loads in short the dead load of a structure comprises its completed weight usually measured in pounds per square foot before it goes into service. Load limits on the roof of a building dead loads. And 1 90 lb 1 7 psf with ceiling be sure to add wt. Live load on attic floor local requirements.

Roof material dead load table. Dead loads depends upon the unit weight of the material. Here each square foot of roof system delivers 50 pounds of live load and 15 pounds of dead load 65 psf total to the structural support system. And also the permanent fixtures present in the structure.

The floors walls roof columns stairs permanent equipment and any fixed decor constitute a static load that normally doesn t change over the life of the building. Minimum design dead load can be found in asce 7 table c3 1. Dead loads consist of the permanent construction material loads comprising the roof floor wall and foundation systems including claddings finishes and fixed equipment. Usually the weight of materials plus immovable fixtures such as carpet roof and etc.

Dead loads are the permanent loads which are always present. Shingles and paper 2 5 psf without ceiling 1 0 psf 2 15 lb. Where possible the values were taken directly from manufacturer technical data sheets and are the actual weights of specific representative products.