ABS-Lock® OnTop
Permanent Stainless Steel Anchorage Point without Roof Penetration for 3 Individuals Simultaneously (patent-protected)

The ABS-Lock OnTop® was specially developed for penetration-free assembly on bitumen membranes and synthetic roof membrane sheetings. The Lock OnTop is the latest generation in fall arrest solutions, providing reliable protection for up to three individuals simultaneously.

The anchorage point is tested in accordance with DIN EN 795, Type A, and can also be implemented as a system intermediate anchor. The ABS-Lock OnTop® is designed to support loads of up to 12kN.

Properties
What is so special about the Lock OnTop is just how easy it is to assemble. As opposed to systems where damage is caused to the actual roof membrane, using the Lock OnTop keeps your roof leak-free. The fact that the anchorage point does not need to be weighted down with additional weights means you have no extra transport costs and do not exceed the maximum permissible roof load - by simply fusing it onto the roof membrane the Lock OnTop provides up to three individuals with reliable support.

Application & Installation
The anchorage point, which is completely manufactured from stainless steel, consists of two longs struts and a centrally-positioned anchorage point. After the simple process of assembling the Lock OnTop in its intended position on the roof surface, strips of identical roof membrane material are cut to size. To finish off, the Lock OnTop is fused into place using the strips of roof membrane material.


Finished! Your anchorage point is already firmly fixed to the roof. How big the strips have to be depends on the material used - exact measurements can be found in the Installation Manual.

Anchorage eyelet at the intersection of both struts.		Encasing the strut in roof membrane material (illustrated here: PVC).

The substructure
As with all other installation surfaces, such as concrete, steel, wood etc., the first thing one should do is to examine the bitumen or PVC membrane to check what state it is in. Particular attention should be paid to obvious flaws, such as those caused by aging, tears, chips or any other damage. If the top roof membrane layer is in good condition, there is nothing to stop you going right ahead and installing your ABS-Lock OnTop®.

To ensure the load is sufficiently distributed  in the case of a fall, the surface area must be at least 15m².

Tests
As the roof membrane is exposed to an extremely wide range of different weather conditions, we put our ABS-Lock OnTop® through an extensive series of tests for use on this type of surface.

In order to be able to guarantee our product conforms with the PVC and bitumen stress values both in winter and at the height of summer, we cooled our complete test assemblies right down to -30o, and then heated them up to +70o. Our OnTop, combined with this type of subsurface, fulfils all the test criteria of the current EN 795 and prEN 795 standards.

To further increase the level of safety, all our tests were carried out simulating the weight of 3 individuals falling simultaneously - in line with the very latest test procedures. This is done by throwing three test blocks, each weighing 100 kg, down from the test construction - one after the other. Having been dropped, they are then left hanging.