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4- Define Modulus of Rupture for Cracked Deflections via Define > Material Properties...
5- First set the nonlinear cracked analysis load cases not to run via Analyze > Set Load Cases To Run... and run analysis for the linear load cases that are part of the design load combinations and perform concrete slab design and concrete frame design. Then set the nonlinear cracked analysis load cases not to run via Analyze > Set Load Cases To Run... Design must be run at least once before running the nonlinear cracked analysis load cases otherwise minimum rebars will be used.
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