Rebar Lap Splice Length & Development Embedment Calculator
Calculate structural tension lap splice lengths (Class A/B), compression splices, 90°/180° standard hook development lengths per ACI 318 and Eurocode 2 codes.
Required Tension Lap Splice Length
Calculator Inputs
Required Tension Lap Splice Length
Tension Lap in Millimeters (mm)
Compression Lap Splice (Columns)
Standard 90° Hook Extension (12db)
Tension Lap in Meters
Tension vs. Compression vs. Hook Lengths
Results provide standard structural estimates; project structural engineer specifications and bar location factors take precedence.
All engineering calculations, structural estimates, and electrical sizing metrics are provided for preliminary estimation only. Always ensure compliance with relevant statutory building codes and occupational safety standards, verified by a certified professional engineer before practical implementation.
Calculation Methodology
Tension Lap (Class B) = 1.3 * Ld ≈ 45db to 60db based on concrete f'c. Compression Lap = max(0.071*fy*db, 40db). Hook Length = 12db.
Frequently Asked Questions
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