
MCS03 Rev B
050120
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Chart 1: Additional Fall Clearance Due to Swing Fall (feet) Overhead Anchorage
Dorsal
D-Ring
Y-Axis: SRD Anchor
ag
e Heigh
t Abo
ve Dor
sal D-Ring of FBH
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X-Axis: Lateral Work Zone Radius (ft)
Using Chart 1 to Find Additional Fall Clearance: Overhead Anchorage
2 foot increments along the X-Axis represent the distance the user is
working away from being directly under the SRD
5 foot increments up the Y-Axis represent the SRD Anchorage height
above the user’s Dorsal D-Ring
To find the additional fall clearance needed to compensate for potential Swing Fall, note the starting location on Chart 1 titled Dorsal D-Ring
Example:
If the user needs to work 18 feet away from directly under the SRD, the SRD needs to be anchored at least 35 feet above the user’s Dorsal D-Ring.
Therefore, 4 feet of additional fall clearance should be added to the sub-total calculation in
Figure 4
.
Example:
If the only suitable overhead anchorage for the SRD is 50 feet above the user’s Dorsal D-Ring, the maximum allowable work zone is 20 feet away
from directly overhead. Therefore, 4 feet of additional fall clearance should be added to the sub-total calculation in
Figure 4
.
Key to Work Zone Areas:
=
Allowable
Use Area
=
Cautionary
Use Area
=
Not Allowed
Use Area