Roof Slab Live Load

2attic loads may be included in the floor live load but a 10 psf attic load is typically used only to size ceiling joists adequately for access purposes.

Roof slab live load.

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. The live load on a roof is the weight of any temporary objects on the roof. Roof live loads largest roof loads typically caused by repair and maintenance pitch rise span lr 20 r1r2 12 lr 20 lr horizontal projection roof live load 16 r 1 r 2 live load reduction factors r 1 accounts for size of tributary area of roof column a t r 2 effect of the roof rise. It keeps changing from time to time even on same structure.

Live loads are different for different buildings and structures. Live loads should be suitably calculated or assumed by the designer based on occupancy levels. An extra floor was required to be constructed which involved converting the original roof slab to a floor slab thereby increasing the live load capacity to 3 kn m2. However if the attic is intended for storage the attic live load or some portion should also be considered for the design of.

Concrete slab thickness recommended thickness of concrete slabs. Live loads for assembly spaces other than those described in this table shall be determined from the occupant load requirements as established by section 1004 of this code using the formula 1 000 net floor area per occupant but shall not be less than 50 psf nor more than 100 psf. Loads should be determined in accordance with this chapter. The construction of the original building consisted of a reinforced concrete frame with cast in situ trough floors.

Concrete walls estimate volume in concrete walls. The live loads used for the structural design of floors roof and the supporting members shall be the greatest applied loads arising from the intended use or occupancy of the building or from the stacking of materials and.