Roof Dead Load

Usually the weight of materials plus immovable fixtures such as carpet roof and etc.

Roof dead load.

The values for dead loads in table 3 2 are for commonly used materials and constructions in light frame residential buildings. And also the permanent fixtures present in the structure. Remember these loads are distributed uniformly over the entire surface of the roof. 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. Dead loads includes the self weight of walls floors beams columns etc. Roof material dead load table. Live load on attic floor local requirements.

Minimum design dead load can be found in asce 7 table c3 1. Load limits on the roof of a building dead loads. The dead load on a roof is the weight of the roof structure itself along with any permanently attached. Dead loads dead loads are static forces that are relatively constant for an extended time.

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. Dead loads consist of the permanent construction material loads comprising the roof floor wall and foundation systems including claddings finishes and fixed equipment. Ft dead load of roof of wood shingle construction 10 lbs. Of ceiling 1 5 psf 3 15 lb.

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 1 90 lb 1 7 psf with ceiling be sure to add wt. Dead loads depends upon the unit weight of the material. Shingles and paper 2 5 psf without ceiling 1 0 psf 2 15 lb.

The unit weight of commonly used building materials are given in the code is 875 part i 1987. The live load on a roof is the weight of any temporary objects on the roof. Joist span bridging girder load width half joist span live load on roof local requirements for wind and snow. 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.

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. Gypsum board 2 0 psf 5 8 in. Building materials are not dead loads until constructed in permanent position.