Slope Formula:
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Drainage pipe slope refers to the gradient or incline given to pipes to ensure proper water flow and prevent stagnation. It's typically expressed as a percentage representing the vertical drop per unit of horizontal length.
The calculator uses the slope formula:
Where:
Explanation: The formula calculates the slope as a percentage by dividing the vertical drop by the horizontal length and multiplying by 100.
Details: Correct slope calculation is essential for effective drainage systems. Too little slope causes water stagnation, while too much slope can cause excessive flow velocity and potential pipe damage.
Tips: Enter both drop and length measurements in the same units (meters, feet, etc.). Both values must be positive numbers greater than zero.
Q1: What is the recommended slope for drainage pipes?
A: Typically 1-2% slope is recommended for most drainage applications, but local building codes may specify requirements.
Q2: Can I use different units for drop and length?
A: No, both measurements must use the same unit system for accurate calculation.
Q3: What's the minimum slope required for proper drainage?
A: Generally, a minimum of 0.5-1% slope is required, but this varies based on pipe diameter and application.
Q4: How do I measure drop and length in the field?
A: Use a level and measuring tape. For drop, measure vertical distance; for length, measure horizontal distance.
Q5: Does pipe material affect slope requirements?
A: Yes, different materials have different friction coefficients which can affect flow characteristics.