Scissorsafe is a unique anchorage system designed to prevent falls from height when used as part of a fall arrest or work restraint system.

Scissorsafe Anchorage points cast into concrete soffits providing installers with overhead anchorage points for fall arrest or work restraint.

Expendable plastic void formers are simply nailed or screwed onto formwork decking which form a tee shaped void in the concrete.

When the concrete has reached strength of 25kN/m3. The void is an accessible anchor point into which A Scissorsafe Anchorage Tool is inserted allowing connection for a personal safety system.

Scissorsafe Anchorage Points
are cast into the structure

Inexpensive Two Part Plastic Void Formers are nailed to the decking formwork from Scissorsafe designed setting-out plans, these ensure that drilled anchors will not be needed.

SCISSORSAFE INSTALLATION STEPS

Nail the Disc onto the formwork

Place a mould over the disc and
press until it clicks into place

The perimeter rim of the mould will be in contact with the shutter face. When using in a light reinforced slab where the concrete placer could stand on the mould inserts, it is advisable to tie them to the rebar for stability.

Pour the concrete

Being careful to avoid disturbing the anchorage moulds when vibrating the concrete.

Formwork removal exposes
the Void Former plastic disk

Once removed the void is available for the fitting of the Scissorsafe Anchorage Tool.

Insert the Scissorsafe Anchorage
Tool into the cast-in mould

Push the blades together until they are aligned. A unique safety feature of this system is if the connector hole is not completely aligned it will not allow the user to connect into it.

Lock the Anchorage Tool using a 10mm Karabiner – 22Kn Rated

Attach a Fall Arrest or Fall Restraint component to it This in turn will be connected to a Lanyard or Self Retracting Fall Arrestor. Give two sharp tugs on the connecting device to ensure that it is fully engaged and ready for use. The Scissorsafe Anchorage may now be used for personal fall Arrest or Fall Restraint.

SCISSORSAFE ANCHORAGE FOR

WORK RESTRAINT / FALL RESTRAINT

A Temporary Work Restraint System will provide a high level of safety for workers when operating in areas with unprotected fall hazards and leading edges.

Temporary Work Restraint Systems consist of components that restrict the workers movement within a safe working zone, preventing them from reaching the fall hazard.

When installed the Work Restraint system provides a high level of safety and where four user’s can operate in a safe working zone.

Single Point Anchorage
for work restraint

Single Point Anchorage’s can be effective when an operative has work task’s in small isolated area’s , particularly effective in window openings or on balconies.

A personal protection equipment system for a single anchorage point will comprise a Scissorsafe Anchorage Tool, a Full Body Harness preferably with front and rear anchorage points and a connecting component with will be determined by the distance from the anchorage point to the work area.
An Adjustable Work Restraint Lanyard is limited to 2 metres in length, for greater distances an Adjustable Work Positioning Lanyard will be utilised in lengths of 3,5,7 and 10 metres.

Dual Point Anchorage for
Horizontal Lifelines / Running Lines

Scissorsafe anchorage’s are linked to Temporary Horizontal Lifelines (also referred to as Running Lines ). The maximum length of the temporary lifeline is 20 metres, typically they will be positioned 3 metres from the leading edge running parallel to it which provides a safe working zone of 60 square metres.

Four workers have complete freedom of movement along the lifeline without needing to transfer from one anchor point to another. This allows them to pass equipment , materials and tools to each other or to any point in the safe working zone.

SCISSORSAFE FOR
TEMPORARY FALL ARREST

Fall arrest is the form of fall protection which involves the safe stopping of a person who is already falling, in other words, the system stops a worker’s fall that has already occurred, preventing impact at a lower level and protecting the fall victim by decelerating the rate of fall. 

Fall Arrest may be considered appropriate where a worker needs freedom of movement to access a difficult to reach part of a structure eg an area where in Work Restraint the worker cannot align parallel to a running line, however Fall Arrest equipment also allows them to reach the point where a fall could occur.

A Fall Arrest system comprises an Anchorage connected to the user’s safety harness with a self-retracting lifeline, these function in a similar way to a car seat belt. A re-coiling main spring keeps a galvanised steel cable in light tension, allowing it to respond immediately in the event of a fall.

Overhead anchorage points reduce the angle of the users Fall Arrest Connecting Device, meaning that if he falls, the effects of a swing-fall or pendulum swing are greatly reduced.

When Scissorsafe is to be utilised as a Fall Arrest System, anchorage points should be pre-planned at regular intervals around the structures perimeters and leading edges so that the user can access an anchorage point above the work area.

The recommended limitations when working connected to an overhead anchorage is 30 degrees in a horizontal direction and fall arrest devices such as self-retracting lifeline, and Lanyards are unsuitable for operation at angles greater than this.

A
Floor Height
B
Line height at 30 degrees
C
Horizontal distance from Anchor in one direction
D
Horizontal distance from Anchor in both direction
2.5 mtr 2.9 mtr 1.4 mtr 2.8 mtr
3.0 mtr 3.5 mtr 1.7 mtr 3.4 mtr
3.5 mtr 4.0 mtr 2.0 mtr 4.0 mtr
4.0 mtr 4.6 mtr 2.3 mtr 4.6 mtr

Omega cast-in anchor

The Omega cast-in anchor system has been designed specifically to provide anchorage positions at floor level.

The anchor consists of a visible plastic protective housing containing a steel element that when embedded in concrete provides a connection point for a webbing sling, that in turn connects to a Temporary Lifeline, Lanyard or Work Positioner.

Cast-in anchorages offer the opportunity to plan safety anchor points early in the construction process meaning that concrete drilling and load testing is avoided.

Working in conjunction with us, we can provide advise for anchor point positions supported with setting-out plans in autocad format for site users.

Anchors are set in a pair’s or as single lanyard points in pre-designed positions to provide anchor points around the buildings perimeter.

They are simply pushed into wet concrete until the cover cap is level with the finished floor level.

When cast-in pairs for lifeline anchorage, it is advisable to align the steel bars in the parallel direction to the lifeline.

Restraint Sling Assemblies link the pairs of anchorages at each end of the lifeline. These are threaded into the anchors

And connected together as a pair using a 35kN rated karabiner

A temporary Lifeline is connected to the restraint slings and when tensioned forms the anchorage running line for up to four operatives simultaneously.

A temporary Lifeline is attached to each end of the sling assembly and tensioned.

This forms the anchorage running line onto which the operative working on the perimeter attaches to, connecting the rear harness point to the lifeline with an Adjustable Work Positioning lanyard.


The user is always in control

The Scissorsafe anchorage tool will not allow connection until it is fully engaged and cannot close or slip until the user purposely removes the connector. When then Scissorsafe tool is locked into the concrete it provides a 12kN capacity anchorage in any direction, compliant to EN 795 Class B

PRE-PLANNING
Before fixing the two part moulds to the formwork, carefully plan their positions, the best position being directly above the head of the user. Avoid placing them too close to concrete edges and joints, or into concrete less than 170mm thick. The ScissorSafe anchorage system is not intended for use in lightweight concrete.

We take Fall Protection seriously and will always try to provide practical and accurate information.
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