ACI 318 Concrete Design Calculators

Flexural Design (ϕMn, ρ, a)

Nominal strength, strain compatibility.

One-Way Shear (Vc + Vs)

Design Vs, spacing, θ limits.

Development & Splice Length

Ld, Ldh, top-bar, coating modifiers.

Column Interaction (P-M)

Axial-flexure strength points.

Punching Shear (Two-Way)

Vc, Vs (stud rails), perimeters.

One-Way Slab Design

ρmin/ρmax, serviceability checks.

Beam Design (Flexure + Shear)

Integrated bending & shear checks.

Deflection & Span-to-Depth

Immediate & long-term checks.

Crack Control & Spacing

Bar spacing limits & service stress.