Quality Inspector
Steel / Rebar Calculators
Bar Bending Schedule (BBS) Calculator (2026)
Expert Guide
A comprehensive tool for calculating the Bar Bending Schedule before bending and cutting starts.
⚡ Quick Answer
The BBS is the primary procurement document. A straight bar BBS = Member Length - 2(Cover) + Hook additions.
🛠️ How It Works
📐 Calculation Formula
BBS Length = Net Span + Hooks - Bends
Total Weight = Length × Unit Weight
⚠️ Common Mistakes to Avoid
- ✕Forgetting to record the "Shape Code" — professional BBS must include shape codes (e.g., 20, 31) for fabricators.
- ✕Not grouping bars by diameter — always prepare separate procurement lists for 8mm, 12mm, 16mm, etc.
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❓ Frequently Asked Questions
BBS is a technical list showing the shape, cutting length, and weight of every bar in a component. It reduces waste and is critical for accurate procurement.
Rebar shapes are defined by "Shape Codes" (e.g., Code 20 for straight, Code 31 for stirrups). Use our diagram to map your site bends.
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Worth NRs. 5,000
NRs. 999 🎯
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