Roof Live Load Ibc

The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process.

Roof live load ibc. Minimum design live load can be found in asce 7 table 4 1 or ibc table 1607 1. Live loads roof live loads snow loads rain loads wind loads and earthquake loads are all examples of variable loads. Prior to the 2012 ibc these roofs were designed for standard roof live loads or local ground snow loads typically in the range of 20 or 30 pounds per square foot. Roof and floor live loads are produced during maintenance by workers equipment and materials and during the life of the structure by movable objects such as planters and people.

Arch 331 note set 13 1 s2014abn 2. The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures. Where uniform roof live loads are reduced to less than 20 psf 0 96 kn m 2 in accordance with section 1607 12 2 1 and are applied to the design of structural members arranged so as to create continuity the reduced roof live load shall be applied to adjacent spans or to alternate spans whichever produces the most unfavorable load effect. The weight of all landscaping materials shall be considered as dead load and shall be computed on the basis of saturation of the soil.

These loads are not considered to be per manent because of their inherent degree of variability with respect to time see the definition of loads in ibc 202. The structural supports of roofs and marquees shall be designed to resist wind and where applicable snow and earthquake loads in addition to the dead load of construction and the appropriate live loads as prescribed in this section or as set forth in table 1607 1. Where uniform roof live loads are reduced to less than 20 psf 0 96 kn m 2 in accordance with section 1607 13 2 1 and are applied to the design of structural members arranged so as to create continuity the reduced roof live load shall be applied to adjacent spans or to alternate spans whichever produces the most unfavorable load effect. These elements are now required to be designed for 75psf if they happen to be less than 10 feet.

D dead load l live load l r live roof load w wind load s snow load e earthquake load r rainwater load or ice water load t effect of material temperature h hydraulic loads from soil f hydraulic loads from fluids.