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TS 500 beam flexural reinforcement
Singly-reinforced rectangular section: required tension steel As for a design moment Md, with the compression block depth and minimum-steel check.
Inputs
Results
fcd / fyd [MPa]—
Block depth a [mm]—
As,min [mm²]—
Required As [mm²]—
Citations
§6.2.5fcd = fck/1.5, fyd = fyk/1.15, fctk = 0.35·√fck.
§7.1Md = 0.85·fcd·b·a·(d−a/2); As·fyd = 0.85·fcd·b·a.
VERIFYReproduces the ideCAD worked example: Md=165 kNm, C30/S420 → a=95.42 mm, As=1022 mm².
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.