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Ridge Beam Height Rafter Calculator

Ridge Height Formula:

\[ Height = Span \times Slope / 12 \]

ft
ratio

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1. What is Ridge Beam Height Calculation?

Ridge beam height calculation determines the vertical height of a roof ridge based on the span and slope of the roof. This is essential for proper roof framing and construction planning.

2. How Does the Calculator Work?

The calculator uses the ridge height formula:

\[ Height = Span \times Slope / 12 \]

Where:

Explanation: The formula calculates the vertical height of the ridge by multiplying the span by the slope ratio and dividing by 12 to convert to feet.

3. Importance of Ridge Height Calculation

Details: Accurate ridge height calculation is crucial for proper roof design, structural integrity, material estimation, and ensuring proper drainage and aesthetics.

4. Using the Calculator

Tips: Enter span in feet and slope as a ratio (e.g., 4 for a 4:12 pitch). Both values must be positive numbers for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is roof span?
A: Roof span refers to the horizontal distance between the exterior walls or supports that carry the roof load.

Q2: How is slope expressed?
A: Slope is typically expressed as a ratio of vertical rise to horizontal run (e.g., 4:12 means 4 inches of rise per 12 inches of run).

Q3: Why divide by 12 in the formula?
A: The division by 12 converts the slope measurement from inches to feet, ensuring consistent units throughout the calculation.

Q4: Can this calculator be used for any roof type?
A: This calculator is primarily designed for simple gable roofs. Complex roof designs may require additional calculations.

Q5: What are typical slope values?
A: Common residential roof slopes range from 4:12 to 12:12, with steeper slopes used in areas with heavy snow loads.

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