Minimum Roof Live Load

Acknowledges the work of the minimum design loads on buildings and other structures standards committee of the codes and standards activities division of the structural engineering institute.

Minimum roof live load.

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. Per api 650 5 2 1f the minimum roof live load on the horizontal projected area of the roof is to be 20lb ft 2 or may be determined by asce 7 but shall not be roof live load storage tank engineering eng tips. Where uniform roof live loads are reduced to less than 20 psf 0 96 kn m2 in accordance with section 1607 12 2 1 and are applied to the design of structural members arranged so as to create continulty the reduced roof live load shall be applied to adjacent spans or to alternate spans whichever produces the most unfavorable load effect. 0 9d 1 0w a load factor of 1 6 when adding to load 7.

This group comprises individuals from many backgrounds including consulting engineering research construc tion industry education government design and. This minimum live load is in addition to the dead load that the roof must bear. 1 2d 1 0e l 0 2s when h loads are present they shall have 6. 0 9d 1 0e effect or 0 9 when resisting the load when permanent.

Rise 1 vertical per 3 horizontal to less than 1 horizontal. Arch or dome with rise 1 8 of span to less than 3 8 of span. Arch or dome with rise less 1 8 of span. Roofs used for other special purposes shall be designed for appropriate loads as directed or approved by the commissioner.

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. 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. Roofs used for promenade purposes shall be designed for a minimum live load of 60 psf 2 87 kn m 2. Minimum uniformly distributed live loads adapted from sei asce 7 10.

Flat or rise less than 1 vertical to 3 horizontal. However if the attic is intended for storage the attic live load or some portion should also be considered for the design of. Minimum design loads for buildings and other structures location uniform load psf. Arch or dome with rise 3 8 of span or greater.

A typical roof is expected to support a live load of 20 psf.