# spherical shell

## 015 Review Problem - Volume of spherical shell

**Problem 15**

A spherical shell 2 in. thick has an outer diameter of 12 in. Find the volume of the material of which it is made.

## 003 Weight of an iron shell

## Thin-walled Pressure Vessels

A tank or pipe carrying a fluid or gas under a pressure is subjected to tensile forces, which resist bursting, developed across longitudinal and transverse sections.

**TANGENTIAL STRESS, σ _{t} (Circumferential Stress)**

Consider the tank shown being subjected to an internal pressure p. The length of the tank is L and the wall thickness is t. Isolating the right half of the tank: