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5.1 DETERMINE REQUIRED FALL CLEARANCE
Determining fall clearance is critical in understanding the correct connecting device to use. The lower the clearance height, the
less options available to connect to the anchor point with. To Determine Fall Clearance several factors must be considered:
Length of Anchorage connector (LA)
Length of Connecting device (LC)
Maximum Arrest Distance of connecting device (MAD)
Height of Worker (HW)
Safety Factor (SF) - (Includes harness stretch, typically 2')
Distance from Anchor Point to next closest obstruction (DAP)
Using the above information Fall Clearance (FC) can be determined with the following formula
(including all clothing, tools, and equipment) is 130-310 lbs. per ANSI Z359.18-2017
***Diagram shown is an example fall clear-
ance calculation ONLY.
Required
distance
from
Anchorage
(18' total)
5.2 SWING FALLS
An anchorage point located in a position that is not directly over the user's fall location results in a swing fall (See Figure 2). Swing
falls may result in the user striking an object with enough force to cause serious injury. Greater clearance is needed to ensure
safety during a swing fall as vertical fall distance will be greater than a fall originating directly below the anchorage point.
FC (from anchor point)=LA+LC+MAD+HW+SF
FIGURE 1- DETERMINE REQUIRED FALL CLEARANCE
For all applications: worker weight capacity range
Weight capacity per OSHA is up to 420 lbs.
Fall Clearance Diagram
Lanyard Length
(6' Total)
Deceleration
distance (4' total)
Worker Height
(6' average)
Safety factor
(2' total)
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