Applies To
	Product(s):	STAAD.Pro
	Version(s):	All
	Environment:	N/A
	Area:	Analysis Solutions
	Subarea:	Miscellaneous Analysis Solutions
	Original Author:	Global Technical Support

How to assign the property reduction factors?

To assign reduced section property factors to a member, use the following procedure.

Global reduction factors will be applied to any member, regardless of material. Code-specific reduction factors are only applied to concrete members (non-concrete members included in the assignment are ignored).

Select the members which will all have the same member specification assigned.

On the Specification ribbon tab, select the Beam > Cracked Property tool in the Specification group.

The Member Specification dialog opens to the Property Reduction Factors tab.

Select either:

Global – specify the Reduction Factors to be used below, which will apply to any member regardless of material. Or

Code Specific – select the building code to use reduction factors specific to load cases per that code which are only applied to concrete members.

You can specify a set of reduction factors to be applied on the calculated section properties such as area, moments of inertia, and torsional constant.

Example:
Member cracked
1 reduction RAX 0.35 RIX 0.45 RIY 0.45 RIZ 0.45

This is a multiplication factor on the property value. It does not signify the amount by which the property is reduced, but, it is simply a value by which the unreduced property is multiplied. Thus, the calculated (or the user-specified value) of the property will be multiplied by the reduction factor to arrive at the value used in the analysis.

This is not applicable to Plates and solids.