Dynamic Analysis of Multistory RCC Building Frame with Flat Slab and Grid Slab
RCC Slab With Eff Span
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This program is conceived and devised by B.Chandra Sekhar SDE(P&D) BSNL Visakhapatnam ([email protected]). Users are advised to use this STRUCTURAL DESIGN OF RCC SLAB SPANNING BOTH DIRECTIONS AS PER IS 456 Project: Construction of TE building at SRIKURMAM, SRIKAKU Slab panel identification A1A2B2B1 Shorter span (in metres) 4 Short Edge 1 Discontinuous Effective span in short direction (in metres) 4.175 Short Edge 2 Longer span (in metres) ( 5 Long Edge 1 Discontinuous Effective span in Longer direction (in metres) 5.166 Long Edge 2 Discontinuous Factored load (kN/sqm) 32 (W) [1.5 times (DL+LL)] Total depth of slab (in m 0.2 (D) Grade of Concrete (fck) M20 prop. dia of Main steel (in 10 dia of secondary steel (in 8 Grade of Steel (fy) Fe415 span ratio (ly/lx) = 1.237365 as per D-1.1 of IS 456 As per Table 26 of IS 456- the type of panel to be co FOUR EDGES DISCONTINUOUS ly/lx upper lmt 1.3 0 0.079 0 Lower lmt 1.2 0 0.072 0 Bending moment coefficien 1.237365 #VALUE! #VALUE! 0 Max. Bending moments #VALUE! #VALUE! 0 Max BM for depth consider = #VALUE! KN.M Effective depth required = #VALUE! MM above calculated max. BM #VALUE! Provided effective depth 175 MM #VALUE! Requirement of steel in % #VALUE! #VALUE! #VALUE! min. required % 0.12 0.12 0.12 in mm² #VALUE! #VALUE! #VALUE! ing in mm as per % of steel rqrmt. #VALUE! #VALUE! #VALUE! spacing allowed in mm (3d or <300) 300 300 300 provide #VALUE! #VALUE! #VALUE! Mx = αx . W . lx² My = αy . W . lx² From Table 26 of IS 456- 2000 the corresponding values taken for linear interpolation Along shorter direction (αx ) Along long at support top side at center bottom side at support top side
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Transcript of RCC Slab With Eff Span
MainThis program is conceived and devised by B.Chandra Sekhar SDE(P&D) BSNL Visakhapatnam ([email protected]). Users are advised to use this program at their discretionSTRUCTURAL DESIGN OF RCC SLAB SPANNING BOTH DIRECTIONS AS PER IS 456:2000Project:Construction of TE building at SRIKURMAM, SRIKAKULAM Dist.Slab panel identificationA1A2B2B1Shorter span (in metres) ( lx)4Short Edge 1DiscontinuousEffective span in shortdirection (in metres)4.175Short Edge 2DiscontinuousLonger span (in metres) (ly)5Long Edge 1DiscontinuousEffective span in Longerdirection (in metres)5.166Long Edge 2DiscontinuousFactored load (kN/sqm)32(W)[1.5 times (DL+LL)]Total depth of slab (in m)0.2(D)Grade of Concrete (fck)M20prop. dia of Main steel (in mm)10dia of secondary steel (in mm)8Grade of Steel (fy)Fe415span ratio (ly/lx) =1.2373652695as per D-1.1 of IS 456Mx = x . W . lxAs per Table 26 of IS 456-2000the type of panel to be considered isMy = y . W . lxFOUR EDGES DISCONTINUOUSFrom Table 26 of IS 456-2000 the corresponding values taken for linear interpolationly/lxAlong shorter direction (x )Along long side (y )at support top sideat center bottom sideat support top sideat center bottom sideupper lmt1.300.07900.056Lower lmt1.200.07200.056Bending moment coefficients1.237365269500.074615568900.056Max. Bending moments041.619072031.23568Max BM for depth consideration=41.619072KN.MEffective depth required based on=123.25MMabove calculated max. BM1.3589901061Provided effective depth (d)175MMSAFE w.r.t required depthRequirement of steelin %Outside range0.409Outside range0.3013809829min. required %0.120.120.120.12in mm210715.75210527.41672spacing in mm as per % of steel rqrmt.373.9991254274109.7307947464239.359440273595.3050605931max.spacing allowed in mm (3d or
