11
FALL CLEARANCE CHARTS
Required Fall Clearance has been provided within the charts below. To determine Required Fall Clearance:
1. Locate your first connector (1).
Measure the Anchorage Height (A) and Maximum Work Radius (W) of your connector,
relative to the height of your D-ring. Place your first connector in the chart where these intersect.
2. Locate your second connector (2).
Use the same method from Step 1 to place your second connector in the chart.
3. Find your Required Fall Clearance (FC).
Locate the chart “wing” each connector falls into, then locate the corresponding
fall clearance in the table to the right. The fall clearance table is divided into columns, depending on capacity. Select the value
within the column matching your total user capacity (including clothing, tools, etc.).
;
If your connectors are in different wings, you must use the greater fall clearance requirement between them.
R
TM
m
(ft)
0.3
(1)
0.6
(2)
0.9
(3)
1.2
(4)
1.5
(5)
0.3
(1)
0.6
(2)
0.9
(3)
1.2
(4)
1.5
(5)
m
(ft)
0.3
(1)
0.6
(2)
0.9
(3)
1.2
(4)
1.5
(5)
0.3
(1)
0.6
(2)
0.9
(3)
1.2
(4)
1
A
W
2
R
TM
m
(ft)
0.3
(1)
0.6
(2)
0.9
(3)
1.2
(4)
1.5
(5)
0.3
(1)
0.6
(2)
0.9
(3)
1.2
(4)
1.5
(5)
m
(ft)
0.3
(1)
0.6
(2)
0.9
(3)
1.2
(4)
1.5
(5)
0.3
(1)
0.6
(2)
0.9
(3)
1.2
(4)
2
1
Example Only
Fall Clearance (FC)
59-100 kg
(130-220 lb)
100-140 kg
(220 -310 lb)
...
2.0 m
(6.6 ft.)
2.1 m
(6.9 ft.)
...
3.3 m
(10.7 ft.)
3.5 m
(11.3 ft.)
...
W
A
;
A Safety Factor of 0.5 ft. (0.15 m) and a user height of 6.0 ft.(1.8 m) were used for all values listed. Kneeling or crouching
will reduce the position of the user above the platform and will require an additional 3 ft. 3 in. (1.0 m) of fall clearance.
;
Required Fall Clearance is calculated with the assumption that each leg of the SRD is extended a minimal distance behind the
user, from wherever they may be positioned in the chart. The assumption of minimum setback distance ensures the user has
enough fall clearance regardless of their actual setback distance.
Fall Clearance(FC)
ANSI /
OSHA
OSHA
130-310 lb.
(59-140 kg)
311-420 lb.
(141-190 kg)
4.0 ft.
(1.2 m)
4.5 ft.
(1.4 m)
5.9 ft.
(1.8 m)
6.5 ft.
(2.0 m)
6.4 ft.
(2.0 m)
7.6 ft.
(2.3 m)
8.5 ft.
(2.6 m)
9.9 ft.
(3.0 m)
;
Do not connect Where
chart shows cross hatching
or crossed-out cells.
W
A
A
Anchorage Height
W
Maximum Work Radius
FC
Required Fall Clearance
