DESIGNDESIGN OF A SLAB SECTION FOR A KNOWN MOMENTFor 1 m wide stripOperate the Yellow CellsSl No.ItemValueUnitA. Design for Flexure1Grade of Concrete (fck)20N/mm22Grade of Steel (fy)415N/mm23Factored moment (Mu)18.36kNm4Effective Depth Required for Balanced Section82mm5Effective Depth Provided (d)140mm6Overall Depth Provided (D)160mm7Area of Steel Required (Ast)385mm28Diameter of Main Bars Used10mm9Spacing of Main Bars Required204mm10Maximum Spacing Permitted for Main Steel [300mm or 3*d, whichever is less]300mm11Area of Distribution Steel Required, if One-way Slab [0.15% for MS Bars & 0.12% for HYSD Bars]192mm212Diameter of Distribution Bars Used8mm13Spacing of Distribution Bars Required262mm14Maximum Spacing Permitted for Distribution Steel [450mm or 5*d, whichever is less]450mmB. Deflection Control by Limiting Span to Effective Depth Ratio [Cl: 23.2 & 24.1 of IS 456 : 2000]15Spacing of Main Bars Actually Provided [At Shorter Mid Span for Four Sides Supported Slab and at Fixed End for Cantilever Slab]200mm16Area of Steel Provided393mm217Service Stress in Steel (fs)236N/mm218Modification Factor [ As per Fig. 4 of IS 456 : 2000 ]1.5619Span of the Slab [Shorter for Two-way Slab] (L)4.14metre20Support Condition of the SlabSimply Supported21Basic (L/d) Ratio2022Maximum Permissible (L/d) Ratio for Deflection Control31.223(L/d)Provided29.57