All steel and other member section properties are taken directly from the master steel table or as specified by the user. For concrete beams the section properties are calculated based on the provided section dimensions. In the modeler, the engineer is able to defined crack factors for axial, flexural and torsion. Hence, moments of inertia (I_xx and I_yy), section cross-section area (A) and section torsional constant (J) are multiplied by the user specified cracked section factors.

For concrete walls, two crack factors are defined: one for membrane (in-plane) actions, and one for bending (out-of-plane) action. These crack factors are applied to the stiffness properties of walls.

When a concrete beam sections is defined as a T sections and the option to calculate the flange width is selected, the section properties for the member are calculated using a code specific effective flange width. The flange width is calculated using similar information to what is used for the calculation of composite steel beam effective widths. Please refer to the RAM Steel Beam manual for a detailed discussion of how openings, penetrations, slab edges and beam member connectivity impact the slab width to either side of the beam member. In T sections when the slab thickness on either side of the beam is different, the flange thickness is taken as the thickness for the side that is under consideration.

The beam effective flange width is calculated using the most applicable code based on the live load reduction method selected in RAM Manager.