RCC Lap Length Toolkit

RCC Lap Length Toolkit – Professional Excel Calculator | Based on IS 456:2000 • Verify against your project spec
Based on IS 456:2000 • Verify against your project spec

RCC Lap Length Professional Toolkit

Complete Excel-like calculator & reference sheets for Indian civil engineers. Instant lap length values, live calculations, and full IS code compliance.

Based on IS 456:2000 IS 13920:2016 Seismic Used by 2,000+ Engineers Saves Hours Daily
🧮 Live Lap Length Calculator Free
IS 456 Cl.26.2.1
▸ Free Results
Development Length (Ld)
—mm
IS 456 Cl.26.2.1
Tension Lap Length
—mm
max(40d, Ld) ÷ 25mm
📐
Formula: Ld = (0.87 × fy × d) / (4 × τbd) | Lap = max(40d, Ld) rounded to 25mm | IS 456:2000 Cl.26.2.1 & Cl.26.2.5.1
📐 Detailed Breakdown & All Results Premium
▸ Complete Calculated Values
τbd (Deformed)
—MPa
0.87 × fy
—MPa
Development Ld
—mm
40d (Tension)
—mm
24d (Compression)
—mm
Tension Lap
—mm
Compression Lap
—mm
Seismic Lap
—mm
✓ FINAL VALUE
—mm
⚡ Instant Site Reference Sheet Premium
Bar Diameter 40d (mm) Ld M20/Fe415 LAP M20/Fe415 Ld M25/Fe415 LAP M25/Fe415 LAP M20/Fe500 Seismic M20/Fe415
8mm 320 376 400 322 325 475 500
10mm 400 470 475 403 425 575 625
12mm 480 564 575 484 500 700 750
16mm 640 752 775 645 650 925 1000
20mm 800 940 950 806 825 1150 1225
25mm 1000 1175 1200 1007 1025 1425 1550

Premium Sheet

Start a 60-second trial or purchase access to view this reference sheet.

📚
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