Roof Dead Load

Dead loads dead loads are static forces that are relatively constant for an extended time.

Roof dead load. Shingles and paper 2 5 psf without ceiling 1 0 psf 2 15 lb. 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. Dead loads consist of the permanent construction material loads comprising the roof floor wall and foundation systems including claddings finishes and fixed equipment. The dead load on a roof is the weight of the roof structure itself along with any permanently attached.

Usually the weight of materials plus immovable fixtures such as carpet roof and etc. Where snow isn t a problem the. Live load on attic floor local requirements. Of ceiling 1 5 psf 3 15 lb.

Ft dead load of roof of wood shingle construction 10 lbs. Dead loads are the permanent loads which are always present. 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. Dead loads includes the self weight of walls floors beams columns etc.

Gypsum board 2 0 psf 5 8 in. Remember these loads are distributed uniformly over the entire surface of the roof. Load limits on the roof of a building dead loads. 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.

Roof material dead load table. 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 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. Minimum design dead load can be found in asce 7 table c3 1. The following table provides typical weights dead load self weight for various roofing materials. 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.

And also the permanent fixtures present in the structure. Joist span bridging girder load width half joist span live load on roof local requirements for wind and snow. Dead loads depends upon the unit weight of the material.