Simply enter the shallow end depth, deep end depth, and horizontal distance, and the tool will calculate the slope percentage and slope angle.
How to Calculate Pool Slope?
The pool slope is calculated using the depth difference (rise) and the horizontal distance (run). The main calculations include:
- Calculate the Elevation Change (Rise)
- Determine the Slope Percentage
- Find the Slope Angle (in Degrees)
Step 1: Calculate Elevation Change (Rise)
The rise is the difference between the deep end depth and the shallow end depth.
Formula:
Rise=Deep End Depth−Shallow End Depth
Step 2: Calculate Slope Percentage
The slope percentage is determined by dividing the rise by the run and multiplying by 100.
Formula:
Slope %=(RunRise)×100
Step 3: Calculate Slope Angle (Degrees)
To find the slope angle, use the inverse tangent (arctan) function:
Formula:
Slope Angle=tan−1(RunRise)
Example Calculation
Let’s calculate the slope for a pool with the following dimensions:
- Shallow End Depth: 3 feet
- Deep End Depth: 8 feet
- Horizontal Distance (Run): 20 feet
Step 1: Calculate Elevation Change (Rise)
Rise=8−3=5 ft
Step 2: Calculate Slope Percentage
Slope %=(205)×100=25%
Step 3: Calculate Slope Angle
Slope Angle=tan−1(0.25)
Slope Angle≈14.04∘
Final Output for the Example
- Elevation Change (Rise): 5 feet
- Slope Percentage: 25%
- Slope Angle: 14.04°
Frequently Asked Questions (FAQs)
1. What is a safe slope for a swimming pool?
Most pools should have a slope of no more than 1:7 (14%) to ensure safety. Competitive pools may have steeper slopes.
2. How do I adjust the slope if it's too steep?
To make the slope gentler, you can:
- Increase the horizontal distance (run)
- Decrease the deep end depth
3. Can this be used for sloped pool entry (beach entry pools)?
Yes! The same formula applies to zero-entry (beach-entry) pools, which gradually slope into the water.
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