Applies To
	Product(s):	STAAD Advanced Concrete Design
	Version(s):	Connect Edition
	Environment:
	Area:	Concrete Design
	Subarea:	Footing Design
	Original Author:	Abhisek Mandal, Bentley Technical Support Group

Why STAAD reaction is not matching with the forces reported in RCDC for footing design?

When we import a STAAD model after analyzing in RCDC, program reads all the member forces for further design. For footing design also, the program reads the end forces of the columns at support end. In some cases, users report that the loads considered for foundation design in RCDC are not matching with the STAAD reaction. This may happen when users add some extra joint load/moment at support. As the load/moment applied at support joint goes directly to the support, those are not reflected in any member force. As RCDC only reads member force those loads/moments are excluded in RCDC and a mismatch is seen in STAAD reaction and RCDC forces for footing design.

In such cases user can apply the same load as concentrated member load at the support end of the column instead of joint load and RCDC will be able to capture them all.