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Stax clamps are a glass act

MATERIALS - Cutting Edge

A CLAMP system designed to hold glass panels in place without the need for drilling holes and using bolts has been developed by English Architectural Glazing.

The Stax system has been developed by the Suffolk-based company over the past 18 months. It is based on the premise that the dead load of each unit of glass can be transferred through the unit below to the lowest level.The result is that only the wind load is accommodated at each floor level.

The system uses two-part, cast stainless steel brackets - available in a number of finishes - that are clamped to each pane of glass in six places.This allows the use of pane sizes of up to 1.5 m x 3.5 m. Intermediate support is provided by tensioned cables, glass fins or secondary steel work.

According to EAG, the clamp system can accommodate any settlement or differential movement in the frame of a building.The bracket assembly is also adjustable to allow the line of the glazing to be amended.

As there is no need to drill the glass, the company says standard double-glazed units with silicone edge seals - from any maker - can be used.This also means it is possible to incorporate any coating or finishing product as long as it is applied to the correct substrate glass.

Production of Stax has been started by Indian company Intricast, and the first clamps will arrive in the UK shortly.The first application will be Camden Lock market in north London.