1. What is Garage Door Header Size?

The garage door header size refers to the dimension of the structural beam that spans the top of the garage door opening, supporting the weight above it. Proper sizing is crucial for structural integrity.

2. How Does the Calculator Work?

The calculator uses the header size formula:

Where:

• \( Span \) — Width of the garage door opening in feet
• \( Load Factor \) — Dimensionless factor based on load requirements

Explanation: The equation calculates the minimum header size needed to safely support the structure above the garage door opening.

3. Importance of Proper Header Size

Details: Correct header sizing ensures structural stability, prevents sagging, and maintains the integrity of the building's frame above the garage door.

4. Using the Calculator

Tips: Enter the span of your garage door in feet and the appropriate load factor. The load factor depends on building codes and the weight the header must support.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical load factor for residential garage doors?
A: Common load factors range from 1.5 to 2.5, but consult local building codes for specific requirements.

Q2: How do I measure the span of my garage door?
A: Measure the width of the rough opening (not the door itself) from one side to the other in feet.

Q3: What happens if my header is undersized?
A: An undersized header may sag over time, causing structural issues and potential damage to the garage door.

Q4: Can I use this calculator for commercial garage doors?
A: Commercial applications may require different calculations due to heavier loads - consult an engineer.

Q5: Does header material affect the size calculation?
A: Yes, different materials (wood, steel, LVL) have different load-bearing capacities - the calculator provides a general guideline.