Minimum Roof Live Load

This group comprises individuals from many backgrounds including consulting engineering research construc tion industry education government design and.

Minimum roof live load.

This minimum live load is in addition to the dead load that the roof must bear. Minimum uniformly distributed live loads adapted from sei asce 7 10. Arch or dome with rise 1 8 of span to less than 3 8 of span. 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.

Rise 1 vertical to 1 horizontal. 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. Arch or dome with rise less 1 8 of span. 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.

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. Arch or dome with rise 3 8 of span or greater. 0 9d 1 0e effect or 0 9 when resisting the load when permanent. Roofs used for other special purposes shall be designed for appropriate loads as directed or approved by the commissioner.

Roofs used for promenade purposes shall be designed for a minimum live load of 60 psf 2 87 kn m 2. A typical roof is expected to support a live load of 20 psf. Roofs used for roof gardens or assembly purposes shall be designed for a minimum live load of 100 psf 4 79 kn m 2. Flat or rise less than 1 vertical to 3 horizontal.

Rise 1 vertical per 3 horizontal to less than 1 horizontal. 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. Minimum design loads for buildings and other structures location uniform load psf. 1 2d 1 0e l 0 2s when h loads are present they shall have 6.

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.