Rigid and semi-rigid diaphram conditions should be choosen by user according to irregularities defined in ASCE 7/16.

Analysis is done automatically according to finite element method.

Required strength is designed to analyse with Load Factors and Combinations

Symbols

Mu = factored flexural moment at section, lb
Mn = nominal flexural strength at section, in.-lb
Vn = nominal shear strength, lb
Vu = factored shear force at section, lb

Required strength is designed to analyse with Load Factors and Combinations. Analysis is done automatically according to finite element method. Rigid and semi-rigid diaphram conditions should be choosen by user according to ASCE 7/16.

Dimensions c1, c2 and ln are based on an effective support area for a slab system supported by columns or walls. A column strip is a design strip with a width on each side of a column centerline equal to the lesser of 0.25l2 and 0.25l1 according to 8.4.1.4.

Factored moment

Mu at the support is calculated at the face of support for slabs built integrally with supports.

Factored one-way shear

Vu at the support is calculated at the face of support for slabs built integrally with supports.

Sections between the face of support and a critical section located d from the face of support for nonprestressed slabs are permitted to be designed for Vu at that critical section if the rules are provided.

  • Support reaction, in direction of applied shear, introduces compression into the end regions of the slab

  • Loads are applied at or near the top surface of the slab

  • No concentrated load occurs between the face of support and critical section

Punching Shear Design title is concerned primarily with slab systems without beams.