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Steel Structure Design

Q1:

The safe working pressure for a spherical vessel 1.5 m diameter and having 1.5 cm thick wall not to exceed tensile stress 50kg/cm2 , is

A 16 kg/cm2

B 18 kg/cm2

C 20 kg/cm2

D 22 kg/cm2

ANS:C - 20 kg/cm2

Pd/4t = T,
P=?
D=1.5m = 150cm.
t = 1.5cm.
t = 50.

By solving.

50 * 4 * 1.5/150 = 2kg/cm2.
The date is not correct,
If t = 500 or d=.15m,
Then answer will be equal to 20.



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