Estimate Total Steel Weight for Procurement
List each line: section, size, kg/m, length, quantity. Line weight = kg/m × L × qty. Sum lines for total tonnes; add waste factor (often 3–8%) per project.
Reference values
- Line formula
- kg = kg/m × L × qty
- Tonnes
- Total kg ÷ 1000
- Waste
- Project-specific % on top of net weight
Procurement roll-up
Export or list sizes
From BOM or takeoff — one row per distinct size/length.
Attach kg/m
From catalog or calculator for each line.
Calculate line kg
kg/m × length × quantity per line.
Sum and add waste
Total tonnes = sum × (1 + waste%); round to supplier MOQ.
Mini BOQ
IPE200 22.4×6m×10 = 1344 kg; L50×5 3.8×12m×20 = 912 kg → 2.26 t before waste.
FAQ
Theoretical vs weighed PO?
State which basis you pay on — see theoretical vs actual guide.
Waste factor?
Depends on nesting and cuts; structural often 3–5%, rebar higher.