1. What is Slope Ratio?

Slope ratio is a measurement used in drainage and construction to determine the incline or gradient of a surface. It's expressed as a percentage that represents the vertical rise per horizontal run.

2. How Does the Calculator Work?

The calculator uses the slope formula:

Where:

• \( Rise \) — Vertical height difference (meters)
• \( Run \) — Horizontal distance (meters)

Explanation: The formula calculates the percentage of slope by dividing the vertical rise by the horizontal run and multiplying by 100 to convert to a percentage.

3. Importance of Slope Calculation

Details: Proper slope calculation is crucial for effective drainage systems, preventing water accumulation, ensuring proper flow, and meeting building code requirements for drainage lines.

4. Using the Calculator

Tips: Enter the vertical rise and horizontal run in meters. Both values must be positive numbers, with run greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is the minimum slope required for drainage pipes?
A: Most building codes require a minimum slope of 1-2% (1-2 cm drop per meter) for drainage pipes to ensure proper flow.

Q2: Can slope be too steep for drainage?
A: Yes, excessively steep slopes can cause water to flow too quickly, leaving solids behind and potentially causing blockages.

Q3: How do I measure rise and run in the field?
A: Use a level and measuring tape. For rise, measure vertical difference between points. For run, measure horizontal distance between the same points.

Q4: What's the difference between slope ratio and slope angle?
A: Slope ratio (percentage) is rise/run × 100, while slope angle is the arctangent of rise/run expressed in degrees.

Q5: Are there different slope requirements for different pipe sizes?
A: Yes, larger diameter pipes typically require less slope than smaller pipes for effective drainage.