RAM Concrete two-way slab to wall fixity

Question

What is the out of plane bending fixity between a 2-way concrete slab and a concrete wall in RAM Concrete. Likewise, what is the fixity in RAM Frame? Does it change if the wall is gravity member vs lateral member. 
 Is there somewhere in the manual that discusses this? 
 Thanks!

Karl G · Accepted Answer

There is not a direct way to release moments at the top of the wall. Moment transfer between the slab and wall is based on the relative flexural stiffness of each element. 
 In RAM Modeler, the cracked section factor (bending) can be used to adjust the out-of-plane wall stiffness. That option applies to both gravity and lateral walls. Using a very small factor would result in negligible out-of-plane stiffness and produce small or 0 out-of-plane moments in the wall in the RAM Concrete and RAM Frame Analyses. 
 The cracked section factor is the only way to affect moment transfer between the slab and wall in the RAM Concrete analysis. 
 In RAM Frame, there is also option to ignore out-of-plane wall stiffness (Criteria - Analysis). If that option is used, the out-of-plane wall stiffness is reduced to a very small value and the resulting out-of-plane moments in the wall will also be very small or 0.

RAM Concrete two-way slab to wall fixity

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