3
A.
To a D-ring to which
another connector is
attached.
B.
In a manner that would
result in a load on the
gate.
NOTE:
Large throat opening snap
hooks should not be connected to
standard size D-rings or similar
objects which will result in a load
on the gate if the hook or D-ring
twists or rotates. Large throat
snap hooks are designed for use
on
fi
xed structural elements such
as rebar or cross members that
are not shaped in a way that can
capture the gate of the hook.
C.
In a false engagement, where features that protrude from the snap hook or carabiner catch on the
anchor and without visual confirmation seems to be fully engaged to the anchor point.
D.
To each other.
E.
Directly to webbing or rope lanyard or tie-back (unless the manufacturer’s instructions for both the
lanyard and connector specifically allows such a connection).
F.
To any object which is shaped or dimensioned such that the snap hook or carabiner will not close and
lock, or that roll-out could occur.
G.
In a manner that does not allow the connector to align properly while under load.
2.4 PERSONAL FALL ARREST SYSTEM:
Personal fall arrest systems used with this equipment must meet
applicable state, federal, and OSHA requirements. A full body harness and Self Retracting Lifeline must be
used with the Standing Seam Roof Anchor. The personal fall arrest system must limit fall arrest forces to
1,800 lbs (8 kN). The roof decking must be a minimum of 24 gauge steel. Refer to Table 1 for a listing of
compatible roof panels.
If the connecting element that a snap hook (shown) or carabiner attaches to is undersized or irregular in
shape, a situation could occur where the connecting element applies a force to the gate of the snap hook
or carabiner. This force may cause the gate (of either a self-locking or a non-locking snap hook) to open,
allowing the snap hook or carabiner to disengage from the connecting point.
1. Force is applied to the
snap hook.
2. The gate presses against the
connecting ring.
3. The gate opens allowing the
snap hook to slip off.
Figure 3 - Unintentional Disengagement (Roll-Out)
Small ring
or other
non-compatibly
shaped element
A.
B.
C.
D.
E.
F.
G.
Figure 4 - Inappropriate Connections
