Two-Way Slab Required Strength per ACI 318-19 with ideCAD

How does ideCAD calculate two-way slab required and design strength according to ACI 318-19?

• 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 per ACI 318-19 with ideCAD

• Punching shear calculation is done automatically

Symbols

M_u = factored flexural moment at section, lb
M_n = nominal flexural strength at section, in.-lb

The required strength is designed to analyze Load Factors and Combinations per ACI 318-19 with ideCAD. The analysis is done automatically according to the finite element method. The user should choose rigid and semi-rigid diaphragm conditions according to ASCE 7/16.

Dimensions c₁, c_2, and l_n 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

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

Punching Shear Design

Punching Shear Design per ACI 318-19 with ideCAD title is concerned primarily with slab systems without beams.

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Two-Way Slab Design Strength per ACI 318-19 with ideCAD

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