Page 7
V1.0 2023 Copyright Safewaze
FIGURE 1 - CALCULATE MINIMUM REQUIRED FALL CLEARANCE (OVERHEAD USE)
NOTE:
A Qualified / Competent Person must determine if MRFCs should be adjusted based upon actual jobsite atmospheric
conditions or additional factors!
MRFCs, as calculated in Table 5, use the greatest Actual Arrest Distance provided when anchored directly overhead with 0’ Swing Fall. Clearances indicated
in Table 5 do not include any additional allowance for Swing Fall hazards. If a Swing Fall Hazard exists, it must be accounted for in the total MRFC. Refer to
Section 10 of this manual for information regarding Swing Fall calculations.
Minimum Required Fall Clearance (MRFC):
Fall Clearance:
There must be sufficient clearance below the anchorage connector to arrest a fall before the user strikes the ground or an obstruction. Figure 1
illustrates a typical Fall Clearance calculation using a Maximum Allowed Arrest distance of 42”. Fall Clearance calculations may vary dependent upon the SRL
being used. It is essential that the correct Arrest Distance is used to determine Minimum Required Fall Clearance.
Table 5 indicates the MRFCs calculated per
the Maximum Allowed Arrest Distance of 42”.
Latitude / Latitude Pro Tie-Back SRL-P
Minimum Required Fall Clearance
(Overhead Use)
A
24”
(61 cm)
Maximum Allowed Free Fall
B
42”
(107 cm)
Maximum Allowed Arrest Distance
C
24”
(61 cm)
Safewaze Safety Factor
D
7’ 6”
(2.3 m)
Sub-Total for Minimum Required Fall Clearance
E
0
*Additional Fall Clearance for Swing Fall
(If swing fall hazard exists refer to Table 6)
F
7’ 6”
(2.3 m)
Total Fall Clearance Required
020
0
49
1
2
PUSH
SLIDE TO
OPEN
TIE-BACK
TIE-BACK
A
C
B
Y
X
Z
Z: MRFC From
Walking/Working
Surface
X: SRL Anchorage
Height Above
Dorsal D-ring
Y: Lateral Offset
Distance
Class 1 Axes Diagram
Lateral Offset Distance (Y) In Feet
0
1
2
3
4
5
6
7
8
9
10
11
12
12
7’ 6”
(2.3 m)
7’ 6”
(2.3 m)
7’ 6”
(2.3 m)
8’ 3”
(2.5 m)
8’ 6”
(2.7 m)
9’
(2.7 m)
9’ 3”
(2.8 m)
9’ 6”
(2.9 m)
9’ 9”
(3.0 m)
11’ 3”
(3.4 m)
12’
(3.7 m)
12’ 9”
(3.9 m)
13’ 3”
(4.0 m)
11
7’ 6”
(2.3 m)
7’ 6”
(2.3 m)
8’ 3”
(2.5 m)
8’ 3”
(2.5 m)
8’ 6”
(2.7 m)
9’
(2.7 m)
9’ 6”
(2.9 m)
10’ 3”
(3.1 m)
11’ 3”
(3.4 m)
11’ 6”
(3.5 m)
12’ 6”
(3.8 m)
13’
(3.9 m)
13’ 6”
(4.1 m)
10
7’ 6”
(2.3 m)
7’ 6”
(2.3 m)
8’ 3”
(2.5 m)
8’ 3”
(2.5 m)
8’ 6”
(2.7 m)
9’ 3”
(2.8 m)
9’ 9”
(3 m)
10’ 9”
(3.3 m)
11’ 6”
(3.5 m)
12’
(3.7 m)
12’ 9”
(3.9 m)
13’ 3”
(4.0 m)
14’
(4.2 m)
9
7’ 6”
(2.3 m)
7’ 6”
(2.3 m)
8’ 3”
(2.5 m)
8’ 3”
(2.5 m)
8’ 9”
(2.7 m)
9’ 3”
(2.8 m)
10’ 3”
(3.1 m)
11’ 3”
(3.4 m)
11’ 9”
(3.6 m)
12’ 3”
(3.7 m)
13’ 3”
(4.0 m)
14’
(4.2 m)
14’ 9”
(4.5 m)
8
7’ 6”
(2.3 m)
7’ 6”
(2.3 m)
8’ 3”
(2.5 m)
8’ 3”
(2.5 m)
8’ 9”
(2.7 m)
9’ 6”
(3 m)
10’ 6”
(3.2 m)
11’ 3”
(3.4 m)
11’ 9”
(3.6 m)
12’ 3”
(3.7 m)
13’ 3”
(4.0 m)
14’ 3”
(4.3 m)
15’
(4.6 m)
7
7’ 6”
(2.3 m)
7’ 6”
(2.3 m)
8’ 3”
(2.5 m)
8’ 3”
(2.5 m)
9’
(2.7 m)
9’ 6”
(3 m)
10’ 9”
(3.3 m)
11’ 6”
(3.5 m)
12’
(3.7 m)
12’ 9”
(3.9 m)
13’ 6”
(4.1 m)
14’ 3”
(4.3 m)
15’ 9”
(4.8 m)
6
7’ 6”
(2.3 m)
7’ 6”
(2.3 m)
8’ 3”
(2.5 m)
8’ 6”
(2.6 m)
9’
(2.7 m)
9’ 9”
(3 m)
10’ 9”
(3.3 m)
11’ 6”
(3.5 m)
12’ 3”
(3.7 m)
13’ 3”
(4.0 m)
14’ 3”
(4.3 m)
15’ 3”
(4.6 m)
16’ 3”
(4.9 m)
5
7’ 6”
(2.3 m)
7’ 6”
(2.3 m)
8’ 3”
(2.5 m)
8’ 6”
(2.6 m)
9’ 3”
(2.8 m)
10’ 3”
(3.1 m)
11’ 3”
(3.4 m)
11’ 9”
(3.6 m)
12’ 3”
(3.7 m)
13’ 3”
(4.0 m)
14’ 3”
(4.3 m)
15’ 3”
(4.6 m)
16’ 3”
(4.9 m)
4
7’ 6”
(2.3 m)
7’ 6”
(2.3 m)
8’ 3”
(2.5 m)
8’ 6”
(2.6 m)
9’ 3”
(2.8 m)
10’ 3”
(3.1 m)
11’ 3”
(3.4 m)
11’ 9”
(3.6 m)
12’ 6”
(3.8 m)
13’ 6”
(4.1 m)
14’ 3”
(4.3 m)
15’ 3”
(4.6 m)
16’ 3”
(4.9 m)
3
7’ 6”
(2.3 m)
7’ 6”
(2.3 m)
8’ 3”
(2.5 m)
8’ 6”
(2.6 m)
9’ 6”
(3.0 m)
10’ 6”
(3.2 m)
11’ 6”
(3.5 m)
12’
(3.7 m)
13’
(3.9 m)
13’ 6”
(4.1 m)
14’ 6”
(4.4 m)
15’ 6”
(4.7 m)
16’ 6”
(5.0 m)
2
7’ 6”
(2.3 m)
8’
(2.4 m)
8’ 3”
(2.5 m)
8’ 6”
(2.6 m)
9’ 6”
(3.0 m)
10’ 6”
(3.2 m)
11’ 6”
(3.5 m)
12’ 6”
(3.8 m)
13’ 6”
(4.1 m)
14’ 6”
(4.4 m)
15’ 6”
(4.7 m)
16’ 6”
(5.0 m)
17’ 6”
(5.3 m)
1
7’ 6”
(2.3 m)
8’
(2.4 m)
8’ 6”
(2.6 m)
9’ 6”
(3 m)
10’ 6”
(3.2 m)
11’ 6”
(3.5 m)
12’ 6”
(3.8 m)
13’ 6”
(4.1 m)
14’ 6”
(4.4 m)
15’ 6”
(4.7 m)
16’ 6”
(5.0 m)
17’ 6”
(5.3 m)
18’ 6”
(5.6 m)
0
7’ 6”
(2.3 m)
8’ 6”
(2.6 m)
9’ 6”
(3 m)
10’ 6”
(3.2 m)
11’ 6”
(3.5 m)
12’ 6”
(3.8 m)
13’ 6”
(4.1 m)
14’ 6”
(4.4 m)
15’ 6”
(4.7 m)
16’ 6”
(5.0 m)
17’ 6”
(5.3 m)
18’ 6”
(5.6 m)
19’ 6”
(5.9 m)
TABLE 5 - ABOVE D-RING MINIMUM REQUIRED FALL CLEARANCE BASED ON MAX ARREST DISTANCE OF 42”
SRL-P
Anchorage
Height
Above Dorsal D-ring (X) In Feet
Minimum Required Fall Clearance (Z) In Feet
