7
locking snap hooks and carabiners are required by ANSI Z359.1 and
OSHA.
2.3
MAKING CONNECTIONS: Only use self-locking snap hooks and
carabiners with this equipment. Only use connectors that are suitable
to each application. Ensure all connections are compatible in size,
shape and strength. Do not use equipment that is not compatible.
Ensure all connectors are fully closed and locked.
DBI/SALA connectors (snap hooks and carabiners) are designed to be
used only as specified in each product’s user’s instructions. See
Figure 6 for inappropriate connections. DBI/SALA snap hooks and
carabiners should not be connected:
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 fixed structural elements such as rebar or cross
members that are not shaped in a way that can capture the gate of the
hook.
Figure 5 - Unintentional Disengagement (Roll-out)
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.
Small ring or other
non-compatibly
shaped element