1. What is Inch Per Foot Slope Calculation?

The inch per foot slope calculation measures the vertical rise in inches for every horizontal foot of run. This measurement is commonly used in construction, landscaping, and engineering to determine proper drainage and grading.

2. How Does the Calculator Work?

The calculator uses the slope formula:

Where:

• Height Difference — Vertical change in inches
• Run — Horizontal distance in feet

Explanation: The formula calculates how many inches the surface rises or falls for each foot of horizontal distance.

3. Importance of Slope Calculation

Details: Proper slope calculation is essential for ensuring adequate drainage, preventing water accumulation, meeting building codes, and creating accessible surfaces.

4. Using the Calculator

Tips: Enter the height difference in inches and the run in feet. Both values must be positive numbers (height > 0, run > 0).

5. Frequently Asked Questions (FAQ)

Q1: What is a typical slope for drainage?
A: For proper drainage, a slope of 1/4 inch per foot is typically recommended, though requirements may vary based on local building codes.

Q2: How do I convert slope to percentage?
A: Multiply the inch per foot slope by 100 to get a percentage. For example, 0.25 inches/foot = 25% slope.

Q3: What's the minimum slope for a wheelchair ramp?
A: ADA guidelines recommend a maximum slope of 1:12 (1 inch rise per 12 inches run), which equals approximately 1 inch per foot.

Q4: Can I use this for roof pitch calculation?
A: Yes, roof pitch is often expressed as rise over run, though it's typically measured in inches per 12 inches rather than per foot.

Q5: How accurate should my measurements be?
A: For most applications, measurements within 1/4 inch and 0.1 foot are sufficiently accurate.