1 files changed, 67 insertions, 0 deletions
diff --git a/3683/CH8/EX8.2/Ex8_2.sce b/3683/CH8/EX8.2/Ex8_2.sce
new file mode 100644
index 000000000..2b1460086
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+sigma_cbc=5//in MPa
+sigma_st=230//in MPa
+lx=3.75//in m
+ly=4//in m
+D=lx*10^3/40//in mm
+D=100//assume, in mm
+W1=(D/10^3)*25//self-weight, in kN/m
+W2=0.5//floor finish, in kN/m
+W3=2//live load, in kN/m
+W=W1+W2+W3//in kN/m
+a=ly/lx
+//panels I and III belong to case 8 and panel II belong to case 6
+//for panels I and III
+//at mid-span
+Ax=0.0483
+Ay=0.043
+Mx1=Ax*W*lx^2//in kN-m
+My1=Ay*W*lx^2//in kN-m
+//at support
+Ay=0.057
+Ms=Ay*W*lx^2//in kN-m
+//for panel II
+//at mid-span
+Ax=0.0403
+Ay=0.035
+Mx2=Ax*W*lx^2//in kN-m
+My2=Ay*W*lx^2//in kN-m
+//at support
+Ay=0.045//<0.057, hence not considered
+d=sqrt(Ms*10^6/0.65/10^3)//in mm
+d=80//assume, in mm
+//assume 10 mm dia bars
+dia=10//in mm
+D=d+dia/2+15
+//steel at centre
+//for panels I and III
+//short span
+z=0.9*d//in mm
+Ast=Mx1*10^6/sigma_st/z//in sq mm
+s1=1000*0.785*dia^2/Ast//>3d
+//long span
+Ast=My1*10^6/sigma_st/z//in sq mm
+s2=1000*0.785*dia^2/Ast//>3d
+//for panel II
+//short span
+Ast=Mx2*10^6/sigma_st/z//in sq mm
+s3=1000*0.785*dia^2/Ast//>3d
+//long span
+Ast=My2*10^6/sigma_st/z//in sq mm
+s3=1000*0.785*dia^2/Ast//>3d
+//steel at support
+Ast=Ms*10^6/sigma_st/z//in sq mm
+s4=1000*0.785*dia^2/Ast//>3d
+s=3*d//maximum spacing of bars in both directions as per IS 456, in mm
+Ast=1000*0.785*dia^2/s//in sq mm
+pt=Ast/10^3/d*100//in %
+//steel for torsion, provide 6 mm dia bars
+//(i)at outer corner of slab
+At1=3/4*Ast//in sq mm
+l=lx/5//in m
+s5=750*0.785*6^2/At1//in mm
+s5=85//assume, in mm
+//(ii)at continuous support
+At2=At1/2//in sq mm
+s6=750*0.785*6^2/At2//in mm
+s6=170//assume, in mm
+mprintf("Summary of design\nSlab thickness=%d mm\nCover=15 mm\nSteel for both panels I and II-\nMain steel= 10 mm dia bars @ %d mm c/c both ways. Alternate bars are bent up at supports.\nTorsion steel=(i) At corners, 6 mm dia bars @ %d mm c/c both ways\n(ii) At continuous support, 6 mm dia bars @ %d mm c/c both ways",D,s,s5,s6)