diff options
Diffstat (limited to '3683/CH5/EX5.9/Ex5_9.sce')
| -rw-r--r-- | 3683/CH5/EX5.9/Ex5_9.sce | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/3683/CH5/EX5.9/Ex5_9.sce b/3683/CH5/EX5.9/Ex5_9.sce new file mode 100644 index 000000000..593709962 --- /dev/null +++ b/3683/CH5/EX5.9/Ex5_9.sce @@ -0,0 +1,24 @@ +P=400//in kN
+b=200//width, in mm
+sigma_cc=4//in MPa
+sigma_sc=190//in MPa
+Lef=3.5//effective length, in m
+//assume 1% steel
+Ag=P*10^3/(sigma_cc*0.99+sigma_sc*0.01)//in sq mm
+D=Ag/b//in mm
+D=340//round-off, in mm
+a=Lef*1000/b
+//as a > 12, it is a long column
+Cr=1.25-Lef*1000/(48*b)//reduction coefficient
+sigma_cc=Cr*sigma_cc//in MPa
+sigma_sc=Cr*sigma_sc//in MPa
+Asc=(P*1000-sigma_cc*Ag)/(sigma_sc-sigma_cc)//in sq mm
+//assume 18 mm dia bars
+n=Asc/(%pi/4*18^2)//no. of bars
+n=4//round-off
+//design of links
+dia=1/4*20//in mm
+//as dia < 6 mm, provide 6 mm diameter links
+dia=6//in mm
+spacing=min(b,16*20,48*dia,300)//in mm
+mprintf("Column size %d x %d mm\nMain steel =%d-18 mm dia bars\nLinks=6 mm dia links @ %d mm c/c\n", b,D,n,spacing)
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