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STAAD Commands and Input Instructions
Section 5
5-274
Live load reduction per UBC and IBC Codes
The UBC 1997, IBC 2000 and IBC 2003 codes permit reduction of
floor live loads under certain situations. The provisions of these
codes have been incorporated in the manner described further
below.
To utilize this facility, the following conditions have to be met
when creating the STAAD model.
1. The live load must be applied using the FLOOR LOAD or
ONEWAY LOAD option. This option is described earlier in this
section of this manual, and an example of its usage may be found
in example problem 15 of the Examples manual.
2. As shown in section 5.32, the load case has to be assigned a Type
called Live at the time of creation of that case. Additionally, the
option called Reducible, also has to be specified as shown.
LOAD n LOADTYPE Live REDUCIBLE
where n is the load case number
The following figures show the load generated on members for the
two situations.
Figure 5.31