1. What is Roof Truss Web Length?

The web length of a roof truss is the diagonal distance between the rise and run of the truss. It's a critical measurement in roof construction that determines the length of the diagonal members in the truss structure.

2. How Does the Calculator Work?

The calculator uses the Pythagorean theorem:

Where:

• Rise — Vertical height of the truss (feet)
• Run — Horizontal distance of the truss (feet)

Explanation: The formula calculates the hypotenuse of a right triangle formed by the rise and run measurements.

3. Importance of Web Length Calculation

Details: Accurate web length calculation is essential for proper roof truss design, material estimation, and structural integrity of the roof system.

4. Using the Calculator

Tips: Enter the rise and run measurements in feet. Both values must be positive numbers. The calculator will compute the diagonal web length.

5. Frequently Asked Questions (FAQ)

Q1: What units should I use for measurements?
A: The calculator uses feet for both input and output. Convert other units to feet before entering values.

Q2: How precise should my measurements be?
A: For construction purposes, measurements should be precise to at least 1/8 inch (0.01 feet).

Q3: Does this work for all roof types?
A: This calculates the basic right triangle hypotenuse. Complex roof designs may require additional calculations.

Q4: How does pitch affect the web length?
A: Roof pitch is the ratio of rise to run. Steeper pitches (higher rise relative to run) will result in longer web lengths.

Q5: Can I use this for other construction calculations?
A: Yes, this formula works for any right triangle diagonal calculation, not just roof trusses.