OPERATION 5
en-60
How to calculate a slope:
Tools Required:
Level
(A)
, either 1 yard, or 1 meter long.
Tape measure
(B)
.
Use the level
(A)
and position it horizontally to measure the
distance
(C)
with tape measure
(B)
. Use the chart to
calculate the slope angle or the percentage grade of the
slope
(D)
.
WARNING
When the machine is being used, whether cutting grass or
not, on slopes, the ROPS frame must be deployed and the
seat belt used.
This rationale is based on the fact that a seat belt must be
worn with a ROPS to comply with the Machinery Directive
2006/42/EC Sections 3.2.2, Seating & 3.4.3, Rollover
Jacobsen recommends that a local risk assessment is
completed by the owner/user of the machine to determine
the risks associated with working on slopes.
0°
0
%
2-
3
/4°
5
%
5-
3
/4°
10
%
8
-1/2°
15
%
11-1/4°
20
%
14°
25
%
16-
3
/4°
3
0
%
19-1/4°
3
5
%
21-
3
/4°
40
%
24-1/
4°
45
%
26-1/2°
50
%
2
8
-
3
/4°
55
%
3
1°
60
%
33
°
65
%
3
5°
70
%
3
6-
3
/4°
75
%
38
-
3
/4°
8
0
%
40-1/4°
8
5
%
42°
90
%
4
3
-1/2°
95
%
45°
100
%
General slope of roadway embankment - 45°
Steepest Grass Area - 31°
Slope of the average roof - 19-1/4°
2nd Class highway maximum grade 4-1/2°
Toll road or freeway - 1-3/4°
Grade
Degrees
!
C
A
B
D
