Diversified Fall Protection, LLC.
Portable Truss Anchor Instruction Manual – V 1
www.fallprotect.com
Copyright Diversified Fall Protection 2013 ©
Page 5 of 16
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Truss Requirements
1. Bottom Chord (See Figure 5):
o
Depth, D, of bottom chord vertical leg of angles must be between 1 1/4 inch and 3 inch.
o
The thickness, Y, of the bottom chord must be a minimum of 1/4 inch.
o
The gap, S, must be a minimum of 3/4 inch
.
o
The width of the space and legs, X, must be a maximum of 2”.
o
Must be hot rolled steel with minimum tensile yield strength of 36 ksi.
2. Truss Span
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Bracing shall be straight, undamaged, and meet the original design intent.
o
The span and loading of the truss affects the allowable concentrated load that may be applied to the
truss. It must be capable of withstanding a concentrated load of 900 pounds with a safety factor of two
(2) for certified anchorages and 5000 pounds for non-certified anchorages.
o
No more than one user is permitted at a time per truss.
o
Do not attach to a truss that is smaller than 18” in height (See figure 4).
o
An acceptable truss must be designed according to the Steel Joist Institute (SJI) and be a K, KCS, LH, or
DLH series truss.
o
The truss must be inspected by an engineer or qualified person for structural integrity which
includes but is not limited to corrosion, end connections, size, load capacity, welds, existing
loading, bracing, span, or any other unsafe conditions.
Figure 5 – Bottom Chord Detail
