Design Software

Foundation Design — Spread Footings

Isolated rectangular and circular spread footings per ACI 318-25 (SI Units). Service-load bearing (§13.3.1), one-way shear (§22.5.5.1(a)), two-way punching (§22.6 + Table 22.6.5.2), flexure at face of column (§13.3.3), bearing at column-footing interface (§22.8), overturning + sliding stability, bar fit/spacing, and development length with hooks. Auto-design driver sizes B, L, T and selects rebar to satisfy all checks. Validated against Wight & MacGregor 7e Ch 15 and ACI SP-17.

✓

Footing OK — q_max = 172.0 kPa, 14/14 checks passq_nu = 217.6 kPa, W_f = 75.0 kN

Footing Geometry (mm)

B — width along X

L — length along Y

T — thickness

Clear cover (mm)

Embedment (mm)

Column

Shape

cx — along X (mm)

Eccentricity ex (mm)

Eccentricity ey (mm)

Position (αs for two-way shear)

Supported member type

Dowel area provided (mm² — optional)

Soil

qa — allowable bearing (kPa)

γs — soil unit weight (kN/m³)

γc — concrete unit weight (kN/m³)

Materials (MPa)

fʹc

λ (lightweight)

Loads (service)

PD — dead load (kN)

PL — live load (kN)

Mx — moment about X (kN·m)

My — moment about Y (kN·m)

H — lateral horizontal (kN)

μ — friction coefficient

Print branding (optional)

Company name

Tagline / project ID

Reinforcement

Bottom-X bar

Bottom-X count

Bottom-Y bar

Bottom-Y count

Warnings

Specify column dowels: As ≥ 1250 mm² required (ACI 318-25 §16.3.4.1, 0.005·Ag minimum).