0
0
0
0
0.3
0.3
0.3
0.6
0.6
0.9
1.2
1.5
1.5
1.8
2.1
2.4
2.7
3.0
3.7
0
0
0
0
0.3
0.3
0.6
0.6
0.9
0.9
1.2
1.5
1.8
2.1
2.4
2.7
3.0
3.4
4.0
0
0
0
0
0.3
0.3
0.6
0.6
0.9
1.2
1.5
1.8
2.1
2.4
2.7
3.0
3.4
3.7
4.3
0
0
0
0.3
0.3
0.6
0.6
0.9
0.9
1.2
1.5
1.8
2.1
2.7
3.0
3.4
3.7
4.3
4.9
0
0
0
0.3
0.3
0.6
0.6
0.9
1.2
1.5
1.8
2.1
2.4
3.0
3.4
3.7
4.3
4.9
5.2
0
0
0
0.3
0.3
0.6
0.9
1.2
1.5
1.8
2.1
2.4
3.0
3.4
3.7
4.3
4.6
5.2
5.8
0
0
0
0.3
0.6
0.6
0.9
1.2
1.5
2.1
2.4
3.0
3.4
4.0
4.3
4.9
5.2
5.8
6.4
0
0
0.3
0.3
0.6
0.9
1.2
1.5
2.1
2.4
3.0
3.4
4.0
4.6
4.9
5.5
6.1
6.7
7.3
0
0
0.3
0.6
0.9
1.2
1.5
2.1
2.4
3.0
3.7
4.0
4.6
5.2
5.8
6.4
7.0
7.6
8.2
0
0
0.3
0.6
1.2
1.5
2.1
2.7
3.0
3.7
4.3
4.9
5.5
6.4
6.7
7.3
7.9
8.5
9.1
Dorsal
D-Ring
0
0.3
0.9
1.2
1.8
2.4
3.0
3.7
4.3
4.9
5.4
6.1
6.4
7.0
7.6
8.2
8.8
9.4
0
0
0.3
0.9
1.2
1.8
2.4
3.0
3.7
4.3
4.9
5.4
6.1
6.4
7.0
7.6
8.2
8.8
9.4
15.2
13.7
12.2
10.7
9.1
7.6
6.1
4.6
3.0
1.5
0
-1.5
0
0.6
1.2
1.8
2.4
3.0
3.7
4.3
4.9
5.5
6.1
6.7
7.3
8.0
8.5
9.1
9.8
10.4
11.0
Meters
Y-Axis: SRD Anchor
ag
e Heigh
t Abo
ve Dor
sal D-Ring of FBH
X-Axis: Lateral Work Zone (m)
Using Chart 2 to Find Additional Fall Clearance: Leading Edge Conditions
0.6 m (2 ft) increments along the X-Axis represent the
distance the user is working away from the SRD
anchorage
1.5 m (5 ft) increments up the Y-Axis represent the SRD
Anchorage height above or below the user’s Dorsal
D-Ring
At no time shall the expanded Work Zone exceed 4.9 m (16 ft), (2.4 m (8 ft) on each side of center)
To find the additional Fall Clearance needed to compensate for potential Swing Fall, note the starting location on
Chart 2 titled
Dorsal D-Ring
Example:
The starting point shown is where the SRD is anchored at Foot Level (1.5 m (5 ft) below the Dorsal D-Ring) and has
1.5m (5 ft) of setback distance from the Leading Edge. From here, the user may expand the lateral work zone up to
2.4 m (8 ft) along the X-Axis and still remain inside the allowable and cautionary areas. The expanded work zone
indicates that 1.2 m (4 ft) of additional fall clearance should be added to the Sub-Total calculation in
Figure 6
.
Should the user need to expand the work zone to 3.7 m (12 ft), the SRD must be anchored 4.6 m (15 ft) above the
Dorsal D-Ring to remain in the allowed and cautionary areas. This change also indicates 1.2 m (4 ft) of additional fall
clearance to be added to
Figure 6
.
If the user cannot anchor the SRD above the Dorsal D-Ring but still must expand the work zone, the SRD will need to
be anchored with more than 1.5 m (5 ft) of setback distance from the leading edge.
Key to Work Zone Areas:
Allowable
Use Area
Cautionary
Use Area
Not Allowed
Use Area
Chart 2: Additional Fall Clearance Due to Swing Fall (meters) with Leading Edge Conditions
for 1.5 m (5 ft) Setback from Leading Edge with Foot Level Anchorage
022420
CMSRD08 Rev A
12
