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What happens if the precast manufacturer positions the cast in fixing sockets incorrectly?

Posted on 3rd March 2022

Konnekt offsite modular balustrades are pre-installed to precast concrete stairs before they are craned into the stairwell on site.

The modular balustrades are bolted on to cast in fixing sockets that are set within the concrete during the stair casting. But what happens if the precast manufacturer puts the cast in fixing sockets in wrong?

The K100 patented 2-point multi axis cast in fixings are designed to achieve maximum adjustability, to enable the balustrades to be pre-installed and accommodate site tolerances.

Even though Konnekt offsite modular balustrades are simplified in design to be incorporated within any precast concrete stairs, we recognise that there are different methods of casting and different manufacturers may have different requirements. Konnekt work alongside the precast concrete manufacturers to understand their processes and offer support wherever possible to ensure accuracy of cast in fixing sockets.

Prior to balustrade design, Konnekt work with the precast supplier to mark-up the cast in fixing sockets in the correct position and these are then transferred to the manufacture information for both the stairs flights and the balustrades.

In order to prevent the precast concrete manufacturer incorporating the cast in fixing sockets incorrectly, an installation jig/template is provided to help position the fixings within the concrete mould. It is important that the cast in fixing sockets are positioned accurately and, to support the modular design, the position of the fixings is standard in relation to the tread and rise on every flight.

In the unfortunate event a set of cast in fixing sockets are missed or positioned on the wrong tread, it is possible to drill and fix bolts. Contact Konnekt and our technical team will specify the fixing detail to suit the design and location. This ‘rescue’ method doesn’t compromise the performance of the balustrade or the precast concrete stair.