Footing Design Calculator (ACI)
ACI Footing Designer
Square footing · US units · reinforced · shear + flexure checks
⚙️ interactive calculator
📋 Design summary square
Net bearing (qnet)—
Required area—
Footing size (B×B)—
Effective depth d—
One‑way shear —
Two‑way (punching) —
🧱 Reinforcement (each direction)
Required As (flexure) —
Provided As (#6 bars) —
Spacing (o.c.) —
ρ / ρmin —
🖊️ blogher · structural toolkit
