1. What is a 1:12 Ramp Slope?

A 1:12 slope means for every 1 unit of vertical rise, there are 12 units of horizontal run. This is a common slope ratio used in accessibility ramps and construction projects.

2. How Does the Calculator Work?

The calculator uses the slope percentage formula:

Where:

• \( Rise \) — Vertical height change
• \( Run \) — Horizontal distance
• \( S \) — Slope percentage

Example: For a 1:12 slope, Rise = 1, Run = 12, so S = (1/12) × 100 = 8.33%

3. Importance of Slope Calculation

Details: Accurate slope calculation is crucial for designing accessible ramps, drainage systems, roads, and various construction projects to ensure safety and compliance with regulations.

4. Using the Calculator

Tips: Enter the slope ratio in the format "rise:run" (e.g., "1:12"). The calculator will compute the corresponding slope percentage.

5. Frequently Asked Questions (FAQ)

Q1: What is the maximum slope for an accessible ramp?
A: The maximum slope for an accessible ramp is typically 1:12 (8.33%) according to ADA guidelines.

Q2: How do I convert slope percentage to degrees?
A: To convert slope percentage to degrees, use the formula: degrees = arctan(slope_percentage/100)

Q3: What does a 1:20 slope mean?
A: A 1:20 slope means for every 1 unit of vertical rise, there are 20 units of horizontal run, resulting in a 5% slope.

Q4: When is a steeper slope acceptable?
A: Steeper slopes may be acceptable for short ramps, private residences, or in situations where space constraints exist, but always check local building codes.

Q5: How does slope affect wheelchair accessibility?
A: Steeper slopes require more effort to navigate and may be unsafe. ADA guidelines specify maximum slopes to ensure accessibility for people with mobility impairments.