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+-->//(Threaded Joints) Example 7.17
+ 
+-->//Refer Fig. 7.36 on page 257
+ 
+-->//Pre-load in the bolt Pi (kN)
+ 
+-->Pi = 2.5
+ Pi  =
+ 
+    2.5  
+ 
+-->//External force acting on the bolt P (kN)
+ 
+-->P = 5
+ P  =
+ 
+    5.  
+ 
+-->//Yield tensile strength of 30C8 Syt (N/mm2)
+ 
+-->Syt = 400
+ Syt  =
+ 
+    400.  
+ 
+-->//Factor of safety fs
+ 
+-->fs = 2.5
+ fs  =
+ 
+    2.5  
+ 
+-->//Assume stiffness of bolts to be 1N/mm kb
+ 
+-->kb = 1
+ kb  =
+ 
+    1.  
+ 
+-->//Stiffness of parts held together kc (N/mm)
+ 
+-->kc = 2.5 * kb
+ kc  =
+ 
+    2.5  
+ 
+
+Tensile stress area of the bolt(A) = 24.553571 mm2
+ 
+\ No newline at end of file