4
5
1.0 Application
Purpose:
The Gridmesh Anchor is designed to allow a worker to connect a Chain block/block or
tackle device in a location directly below a walkway or trafficable area covered by Gridmesh.
The GMA provides superior installation time and safety than traditional methods of setting an
anchorage for this style of application. The risk of a fall by a rope access technician to get to a
place to install a beam anchors/clamp is removed and the requirement to use an EWP is also
negated. The device can be installed in under 5 minutes with two people.
The Gridmesh Anchor concept may also be used as an attachment point for fall protection and
rescue - see user manual for fall protection for more information. Only ever use the specific
Gridmesh Anchor for materials handling for this purpose - if fall protection is required, use
product models GA01 or GA02.
Standards:
The Gridmesh Anchor device/kit has been tested in accordance with AS1418 as a
mobile crane device up to 1.2 tonne WLL. The slings used are individually tested and certified
to AS1666.
Training:
This equipment is intended to be used by persons trained in its correct application and
use. It is the responsibility of users to ensure that they are familiar with these instructions and
are trained in the correct care and use of this equipment. Users must be aware of the operating
characteristics, application limits, and the consequences of improper use.
2.0 Limitations & Requirements
Installation Location:
The Gridmesh Anchor must be positioned on a gridmesh structure in
such a way as the load bearing feet of the device rest over structure supporting/holding up the
mesh. If there is any doubt about the potential for the structure to sustain a fall arrest load, a
qualified person should be consulted to verify the structural adequacy prior to use.
NOTE: Load Limit
- the maximum weight of the equipment to be hauled using this
device is 1.2 metric tonnes.
Free Fall / Swing Fall:
Gridmesh Anchor recommends that during the hauling process that
care be taken to-avoid the suspended load being dropped in a free-fall situation or being allowed
to swing and come into contact with structures, people or other objects. In order to avoid this
possibility, place the load as directly as possible below the anchor location and secure a guide
rope to the rope to manage the potential for swing in the load as hauling commences.
Exclusion Zones:
Always establish exclusion zones around the load hauling areas. Exclusions
zones require a temporary barricade to be erected to prevent the public or other workers for
walking unintentionally below a suspended load. The person hauling the load using the block &
tackle or chain block should also ensure they do not stand below the load drop zone and that
they remain clear of the suspended load in the instance it may become accidentally dislodged,
or there is a failure in the hauling equipment. A falling load may result in serious injury or death
for any person struck by a fall load.
Physical and Environmental hazards:
A risk assessment should be undertaken prior to
installing any GMA product. The Gridmesh Anchor and any attaching hauling systems must be
positioned in a way that reduces the risk of a load colliding or impacting them in the event of a
fall. For example protrusions, sharp edges, machinery or other items that may be located in the
area a fall may occur should be cleared or precautions taken to prevent collision prior to use.
i
Compatibility of Components:
Unless otherwise noted, Gridmesh Anchor equipment
is designed for use with Gridmesh Anchor approved components and subsystems only.
Substitutions or replacements made with non approved components or subsystems may
jeopardize compatibility of equipment and may affect safety and reliability of the complete
system.
IMPORTANT:
Read and follow manufacturer’s instructions for associated components and
subsystems in your hauling system.
Compatibility of Connectors:
Connectors are compatible with connecting elements
when they have been designed to work together in such a way that their sizes and shapes
do not cause their gate mechanisms to inadvertently open regardless of how they become
oriented. Contact Gridmesh Anchor if you have any questions about compatibility. Connectors
(hooks, karabiners, and D-rings) must be capable of supporting at least 22.2kN (5,000 lb).
Connectors must be compatible with the anchorage or other system components. Do not use
equipment that is not compatible. Non-compatible connectors may unintentionally disengage.
Connectors must be compatible in size, shape, and strength.
Making Connections:
Snap hooks and karabiners used with this equipment must be self-
locking. 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.
Gridmesh Anchor connectors (snap hooks and karabiners) are designed to be used only as
specified in each product’s user’s instructions. See Figure 3 for examples of inappropriate
connections. Do not connect snap hooks and karabiners:
A. To a D-ring to which another connector is attached.
B. In a manner that would result in a load on the gate.
C. In a false engagement, where features that protrude from the snap hook or karabiner
catch on the anchor, and without visual confirmation seems to be fully engaged to the
anchor point.
D. To each other.
E. By wrapping cable lifeline around anchorage and securing to lifeline.
F. To any object which is shaped or dimensioned such that the snap hook or karabiner 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.
i
Figure 2 - Unintentional disengagement
Figure 3 - Inappropriate connections
If the connecting element to which a snap hook (shown) or
karabiner attaches 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 karabiner. This force may cause
the gate (of either a self-locking or a non-locking snap hook) to
open, allowing the snap hook or karabiner to disengage from the
connecting point.
A.
Shaped element
Force is applied to
the Snap Hook
The Gate presses
against the
connection ring
The Gate opens
allowing the Snap
Hook to slip off
E.
F.
G.
B.
C.
D.
