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diff --git a/3683/CH10/EX10.2/Ex10_2.sce b/3683/CH10/EX10.2/Ex10_2.sce
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+l=2.7+1//span, in m
+R=0.15//rise, in m
+t=0.27//tread, in m
+sigma_cbc=5//in MPa
+sigma_st=230//in MPa
+//assuming 50 mm per 1 m of span
+D=50*l//in mm
+D=200//assume, in mm
+W1=D/10^3*25*sqrt(R^2+t^2)/t//slab load on plan, in kN/m
+W2=1/2*R*t*25/t//load of step per metre, in kN/m
+W3=3//live load, in kN/m
+W=W1+W2+W3//in kN/m
+M=W*l^2/8//in kN-m
+d=sqrt(M*10^6/0.65/10^3)//in mm
+d=170//in mm
+//assume 10 mm dia bars
+dia=10//in mm
+D=d+dia/2+25//which is equal to assumed value, hence OK
+z=0.9*d//in mm
+Ast=M*10^6/sigma_st/z//in mm
+s1=1000*0.785*dia^2/Ast//spacing of 10 mm dia bars
+s1=150//assume, in mm
+Ads=0.12/100*D*10^3//distribution steel, in sq mm
+//provide 8 mm dia bars
+s2=1000*0.785*8^2/Ads//in mm
+s2=210//in mm
+//let span-to-depth ratio be 'a'
+a=l*10^3/D
+//for Fe415 grade steel and pt=.32
+MF=1.2
+b=20*MF//permissible span-to-depth ratio
+//as a<b, hence OK
+mprintf("Summary of design\nSlab thickness=%d mm\nCover = 25 mm\nMain steel = 10 mm dia bars @ %d mm c/c\nDistribution steel = 8 mm dia @ %d mm c/c",D,s1,s2)