5/31/2023 0 Comments Csi safe crack![]() Use the Quick Rebar Top/Bottom option to specify a fixed amount of reinforcement throughout the slab.Here, rebar from finite-element design is the default setting, which may be revised using either of the following methods: To begin, select Run > Cracking Analysis. Can I overwrite the resultant design slab reinforcement to reduce deflection?Īnswer: Yes, various options are available for the redefinition of design reinforcement. ![]() Floor slabs should however behave as diaphragms to transfer in-plane forces. In fact, ACI prohibits such behavior in high seismic areas because flexural contribution from floor slabs may increase lateral stiffness to an unconservative extent. However, this is rarely the case in that floor slabs typically do not contribute to the lateral capacity of the system. Should stiffness modifiers be applied to floor slabs?Īnswer: Stiffness modifiers need not be applied to floor slabs unless special conditions exist, such as when shear walls are close to one another and the shell object acts as a coupling/link beam. Additional information on long-term cracked-section analysis is available through the Cracked-section analysis article. ![]() Why do linear and nonlinear long-term cracked-analysis results differ?Įxtended Question: Since my load pattern, coefficients, and all other parameters are the same, why would I not get the same results?Īnswer: The principle of superposition does not apply during nonlinear analysis, therefore results will be different between linear and nonlinear applications.
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