1. What is a Pressure Calculator for Pipe?

Definition: This calculator determines the internal pressure a pipe can withstand based on material properties and dimensions.

Purpose: It helps engineers and technicians verify pipe design specifications and safety margins.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P \) — Internal pressure (psi)
• \( S \) — Allowable stress of pipe material (psi)
• \( t \) — Pipe wall thickness (inches)
• \( D \) — Pipe outside diameter (inches)

Explanation: The formula calculates the maximum pressure a pipe can handle before yielding, based on its material strength and geometry.

3. Importance of Pressure Calculation

Details: Proper pressure calculation ensures pipe systems operate safely within design limits, preventing failures and leaks.

4. Using the Calculator

Tips: Enter the material's allowable stress, pipe wall thickness, and outside diameter. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is allowable stress?
A: The maximum stress a material can withstand under operating conditions, typically a fraction of its yield strength.

Q2: Should I use ID or OD for diameter?
A: The formula uses outside diameter (OD). For inside diameter (ID) calculations, different formulas apply.

Q3: What safety factors should I consider?
A: This formula gives theoretical maximum. Always apply appropriate safety factors per industry standards.

Q4: Does this work for all pipe materials?
A: Yes, but you must use the correct allowable stress value for your specific material (steel, PVC, etc.).

Q5: How does temperature affect the calculation?
A: Material strength varies with temperature. Use stress values appropriate for your operating temperature.