Limitations – Qualcraft Stingray Anchor User Manual
Page 9
FALL CLEARANCE CALCULATION
Lanyard length
(6’ total)
Safety factor
(3’ total)
Deceleration
distance (4’ total)
Height of harness
dorsal D-ring from
worker’s feet
(6’ total)
Required
distance
from
anchorage
(19’ total)
Limitations
Fall Clearance: There must be sufficient
clearance below the anchorage connector
to arrest a fall before the user strikes the
ground or an obstruction. When
calculating fall clearance, account for a
MINIMUM 3’ safety factor, deceleration
distance, user height, length of
lanyard/SRL, and all other applicable
factors.
Diagram shown is an example
fall clearance calculation ONLY.
Swing Falls: Prior to installation or use, make considerations for eliminating or minimizing all
swing fall hazards. Swing falls occur when the anchor is not directly above the location where a
fall occurs. Always work as close to in line with the anchor point as possible. Swing falls
significantly increase the likelihood of serious injury or death in the event of a fall.
G
ua
rd
ia
n
Fa
ll
Pr
ot
ec
tio
n
6
30
5
S.
2
31
st
S
t.
, K
en
t,
W
A
9
80
32
p
ho
ne
: (
80
0)
4
66
-6
38
5
f
ax
: (
80
0)
6
70
-7
89
2
w
w
w
.g
ua
rd
ia
nf
al
l.c
om
7
Fall Clearance:
Stingray Anchor and Absorbinator HLL System
70-80
18' 7'
80-90
19' 8"
90-100
20' 10"
*Clearance Table Using a
Self-Retracting Lifeline (SRL)
Span (FT)
Required Distance
0-10
10' 11"
10-20
12' 0"
20-30
13' 1"
30-40
14' 2"
40-50
15' 4"
50-60
16' 5"
60-70
17' 6"
*This table only applies
when SRL and HLL are
located above harness
dorsal D-ring.
60-65
26' 1"
27' 1"
28' 1"
29' 1"
65-70
26' 8"
27' 8"
28' 8"
29' 8"
70-75
27' 5"
28' 5"
29' 5"
30' 5"
75-80
28' 0"
29' 0"
30' 0"
31' 0"
80-85
28 8"
29' 8"
30' 8"
31' 8"
85-90
29' 4"
30' 4"
31' 4"
32' 4"
90-95
30' 0"
31' 0"
32' 0"
33' 0"
95-100
30' 7"
31' 7"
32' 7"
33' 7"
Clearance Table Using Energy Absorbing Lanyards
Span Length
(FT)
3 FT
Lanyard
4 FT
Lanyard
5 FT
Lanyard
6 FT
Lanyard
0-10
18' 10"
19' 11"
20' 11"
21' 11'
10-15
19' 7"
20' 7"
21' 7"
22' 7"
15-20
20' 2"
21' 2"
22' 2'
23' 2"
20-25
20' 11"
21' 11"
22' 11"
23' 11"
25-30
21' 6"
22' 6"
23' 6"
24' 6"
30-35
22' 2"
23' 2"
24' 2"
25' 2"
35-40
22' 10"
23' 10"
24' 10"
26' 10"
40-45
23' 6"
24' 6"
25' 6"
27' 6"
45-50
24' 1"
25' 1"
26' 1"
28' 1"
50-55
24' 10"
25' 10"
26' 10"
28' 1-"
55-60
25' 5"
26' 5"
27' 5"
29' 5"