Jacobsen 10029194, Safety, Operation & Maintenance Manual

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Safety, Operation, & Maintenance Manual
OPERATION
Lithium
How to calculate a slope
Tools Required:
Level (A), either ....................... 1 yard, or 1 meter long.
Tape measure (B).......................................................1.
1. With the level
(A) positioned horizontally, measure the distance (C) with tape measure (B) .
2. Use the chart to calculate either the slope angle or the % grade of the slope (D) .
Fig. 2
Height (C) Result (D)
Inches with 1 Yard Level (A)
Millimeters with 1 Meter Level
(A)
Slope in Degrees Slope Grade %
3 4.8 8.3
100 5.7 10.0
150 8.5 15
6 9.5 16.7
200 11.3 20.0
7.5 11.8 20.8
225 12.7 22.5
9 250 14 25.0
275 15.4 27.5
10 15.5 27.8
300 16.7 30.0
11 17.0 30.6
325 18.0 32.5
12 18.4 33.3
350 19.3 35.0
13 19.9 36.1
375 20.6 37.5
14 21.3 38.9
400 21.8 40.0
15 22.6 41.7
425 23.0 42.5
16 24 44.4
475 25.4 47.5
18 500 26.6 50.0
20 29.1 55.6
C
A
B
D