Concrete Shear Wall

In-plane wall shear & approximate flexure with an opening (ACI 318-19 11.5/18.10).

Strength design (LRFD): enter factored demands (Pu, Mu, Vu from your load combinations). Results follow ACI 318-19; bar areas use standard ASTM sizes. Confirm detailing (development, spacing, ties) separately.

Design diagram — updates live with your inputs

Wall Geometry

Wall length lw (ft)i

Wall thickness (in)i

Wall height hw (ft)i

Opening length (ft)i 0 for a solid wall

Materials

Concrete f'c (psi)i

Steel fy (psi)i

Distributed Reinforcement

Horiz. reinf. ratio rho_ti Distributed horizontal steel

Vert. reinf. ratio rho_li Distributed vertical steel

Factored Demands

Factored shear Vu (kip)i

Factored axial Pu (kip)i

Overturning Mu (kip-ft)i

ACI 318-19

Validation, assumptions & limitations Download validation report (PDF) ↗

This calculator is verified by 4 independent tests comparing its output against closed-form statics, NDS/SDPWS design-standard values and published worked examples. Full case-by-case results are in the PDF report.

Assumptions

alpha_c = 3.0 for hw/lw <= 1.5 (here 0.6).
Opening deducted from the shear web length.
Distributed reinforcement >= 0.0025 each way.

Limitations

Flexural strength is an approximate axial-assisted value.
Pier/boundary-element design confirmed separately.

Results are for preliminary design and must be confirmed by a licensed engineer against the current adopted code and project-specific conditions.