Report No. 1


3- Problem:

In a cylinder of bore 70 mm the pressure is 4 N/mm2.The cover plate is secured by M10 studs with a required SF of 12.

Determine the minimum number of studs using

a) EN1A

b) EN3



D = 70 mm

p = 4 N/mm2

Studs M10

SF = 12


a)      EN1A

b)      EN3


n (number of studs) in case a) and b)


d M10 = 8.16 (From Chart 11)

a) Steel EN1A

σst= 420 N/mm2

b) Steel EN3

σst= 460 N/mm2