Calculated Industries 4315 - Manual (Page 41)

Finding Slope Ratio/Percent Grade
What is the slope ratio and percent
grade of a lot that drops 3 feet 6 inch-
es over 20 feet?
Step/Keystroke Display
1. Clear calculator
[On/C] [On/C] 0.
Solve for degree of Slope
2. Enter drop (as Depth)
3 [Feet] 6 [Inch] [Depth]
3. Enter distance (Width)
20 [Feet] [Width]
4. Find degree of slope
[Conv] [Depth] 9.926246°
Solve for Slope ratio
5. Find slope ratio
[Depth] 5.714286 (or 5.71 to 1)
Solve for Percent Grade
6. Find percent grade
[Conv] [Width] 17.5 %
User’s Guide – 41