Input
Results
Concrete volume (m³)—
Formwork (m²)—
Main rebar wt (kg)—
Stirrup wt (kg)—
Total rebar (kg)—
Concrete cost ₱—
Rebar cost ₱—
Formwork cost ₱—
TOTAL ₱ (incl. waste)—
Method
Concrete = L · B · H. Formwork = 2(L · H + L · B + B · H) − bottom (typical for beam: L·B + 2·L·H = soffit + sides). For a single beam: form = L·B + 2·L·H. Bar mass per m: m = ρ·π·(d/2)² with ρ = 7850 kg/m³ → kg/m = (d²) · 0.00617 (mm). Stirrup count = L / spacing + 1; perimeter ≈ 2·(B+H − 0.08).