Free Web Tool

Load Path Estimator

Trace gravity loads from slab through beam, column, and foundation for rapid take-offs and column sizing.

Inputs

Slab DL (kN/m²)

Slab LL (kN/m²)

Tributary area (m²)

# floors above

Beam SW (kN/m)

Beam tributary length (m)

Column SW per floor (kN)

Method (rapid take-off)

Slab → Beam: w_beam = (DL+LL)·tributary_width + beam SW.
Beam → Column: P = w·L_t (per floor).
Cumulative column at base = P·n_floors + n·col_SW.
Foundation gets cumulative + foundation SW (not included).

Results

Slab unit load (D+L)—

Per-floor area load—

Beam line load—

Per-floor column P—

Cumulative col base P—

Foundation sees—