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TS 500 development & lap length
Basic development length lb for ribbed bars and the lap length lo, with the 20φ and 300 mm minimums.
Inputs
Results
lb (formula) [mm]—
20φ [mm]—
Development lb [mm]—
Lap length lo [mm]—
Citations
§9.1.2alb = 0.12·(fyd/fctd)·φ ≥ 20φ (ribbed bars).
§9.2.5.1ℓ0 = α1·ℓb, α1 = 1 + 0,5r (tüm kesiti çekmede 1,8); ℓ0 ≥ 300 mm (Madde 9.2.6).
VERIFYHand-verified: C25/S420, φ16 → lb=601 mm; formula confirmed across independent sources.
Görsel açıklama
Preliminary calculation tool. Results are for preliminary sizing and cross-check only. Final design, sealed responsibility, and permit submissions require the full official text of the referenced regulations and the review of a licensed engineer.