Question

A steel pipe with an inside diameter of 10 in. will be used to transmit steam under a pressure of 800 psi. If the hoop stress in the pipe must be limited to 10 ksi because of a longitudinal weld in the pipe, determine the minimum satisfactory thickness for the pipe.

Answer 1

Answer:

The minimum satisfactory thickness for the pipe is 0.4. in

Explanation:

The computation of the  minimum satisfactory thickness for the pipe is shown below:

As we know that

$\sigma _h = \frac{pr}{t}$

Now for determining the thickness we have to rearrange it

$t = \frac{pr}{\sigma_h}$

where,

p = pressure inside the pips

r = pipe radius

$\sigma _h$ = stress of the hoop

Now put the given values to the above equation

So,

$t = \frac{800 \times 5}{10 \times (10)^3}$

= 0.4 in

Hence, the minimum satisfactory thickness for the pipe is 0.4. in

The same is to be considered