Answer:
8 mm
Explanation:
Given:
Diameter, D = 800 mm
Pressure, P = 2 N/mm²
Permissible tensile stress, σ = 100 N/mm²
Now,
for the pipes, we have the relation as:
[tex]\sigma=\frac{\textup{PD}}{\textup{2t}}[/tex]
where, t is the thickness
on substituting the respective values, we get
[tex]100=\frac{\textup{2\times800}}{\textup{2t}}[/tex]
or
t = 8 mm
Hence, the minimum thickness of pipe is 8 mm
