How the quantities are calculated
Follow the method, check the example and review the assumptions.
How the quantities are calculated
Follow the method, check the example and review the assumptions.
From measurements to materials
Unit weight in kg/m = diameter² ÷ 162. Total weight is unit weight multiplied by the entered or scheduled bar length.
Put the numbers in context
A 12 mm bar weighs about 0.889 kg/m. Ten 12 m bars therefore weigh about 106.67 kg before wastage.
This illustrates the method; your inputs determine your result.Assumptions to check
- Diameter, spacing, cutting lengths and quantities come from structural information supplied by the user.
- Purchase rounding is an editable kilogram increment.
Limits of this calculation
- The tool does not choose safe diameters, spacing, laps, anchorage, cover or reinforcement layouts.
- Spacing mode does not add laps, hooks, chairs or edge detailing.
Common questions
Can this choose reinforcement for a slab?
No. It only converts user-provided structural information into length and weight.
Can I work from a bar-bending schedule?
Yes. Schedule mode accepts diameter, cutting length and quantity for each mark.