The formula to calculate the Pipe Stretch (PS) is:
\[ PS = \frac{F \cdot L \cdot 12}{A \cdot E} \]
Where:
Concrete pressure is a measure of the total force per unit area that a column of uniform concrete exerts on the surface below it.
Let's assume the following values:
Using the formula:
\[ PS = \frac{1000 \cdot 20 \cdot 12}{2 \cdot 30000000} \approx 0.004 \]
The Pipe Stretch (PS) is approximately 0.004 inches.