1. What is Roof Scupper Size Calculation?

Roof scupper size calculation determines the appropriate dimensions for roof drainage systems based on the expected water flow. Proper scupper sizing is essential for effective water management and preventing roof damage.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Width \) — Scupper width in inches
• \( Height \) — Scupper height in inches
• \( Flow Capacity \) — Water flow rate in gallons per minute

Explanation: The formula calculates the required scupper size by multiplying the dimensions with the expected water flow capacity.

3. Importance of Scupper Sizing

Details: Proper scupper sizing prevents water accumulation on roofs, reduces structural stress, and minimizes the risk of leaks and water damage to buildings.

4. Using the Calculator

Tips: Enter width and height in inches, and flow rate in gallons per minute. All values must be positive numbers for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: Why is scupper sizing important?
A: Proper sizing ensures efficient drainage, prevents water pooling, and protects the roof structure from damage.

Q2: What factors affect scupper size requirements?
A: Roof area, rainfall intensity, roof slope, and local building codes all influence scupper size requirements.

Q3: How often should scuppers be inspected?
A: Scuppers should be inspected at least twice yearly and after major storms to ensure they're clear of debris.

Q4: Can scupper size be too large?
A: Oversized scuppers may not necessarily cause problems, but they should be properly sealed to prevent water intrusion.

Q5: Are there building code requirements for scupper sizing?
A: Yes, most jurisdictions have specific building code requirements for roof drainage systems including scupper sizing.