Steel Quantity Calculator for Beams Beam Steel Quantity Calculator Beam Length (m) IS 456:2000 recommends a maximum span of 6m for beams without intermediate support. Beam Width (m) Minimum width of beams should be 230mm. Beam Depth (m) Depth should not be less than 1/12 of the span (IS 456:2000). Grade of Steel Fe415 Fe500 Fe550 Choose a steel grade according to IS 456:2000. Diameter of Main Bars (mm) Use 16mm to 20mm for main bars as per IS 456:2000. Number of Main Bars Minimum 3 bars for beams (IS 456:2000). Diameter of Stirrups (mm) 8mm is commonly used for stirrups (IS 456:2000). Spacing of Stirrups (mm) Maximum spacing should be 300mm (IS 456:2000). Length of Stirrups (m) Length should be calculated based on beam dimensions. Calculate Quantity
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