We've put together some of the most commonly asked questions about Bison products and services - with answers, of course. If you have a question that you can't find the answer to then contact our sales team on 01283 817500 or email technicalquery@bison.co.uk

Subject to a design check, small holes required for services are able to be core-drilled on site or pre-formed in the factory. Larger holes for service risers can be created through the use of steel trimmer beams which are designed and provided by Bison Precast.

Yes, but this must be checked by the Bison technical team. On a beam and block floor, it may be necessary to reduce the beam centres therefore these checks must be applied at the design stage.

If the floor is able to laterally distribute partition loads, it may be possible to design the floor using a partition allowance. However, a check would need to be carried out to ensure the additional width generated by the inclusion of the partition allowance can support the actual partition load. Our standard approach is to design a floor using the location of the partitions.

The standard wire pattern and cover will provide a minimum one-hour fire rating. Changes to the cover and wire pattern can increase this to two hours.

A deflection head may be omitted if the movement of the slab is negligible. However, even a small deflection can cause damage to non-load bearing partitions, therefore we recommend that a deflection head is allowed for.

We recommend that a floor is not loaded out until at least 72 hours after installation. For specific load restrictions, please refer to our ‘Downloads‘ section.

Yes. The best solution is to specify a lightweight steel balcony and an L-shaped bracket that extends the full width of the slab and is bolted through the unit. For specific details, please refer to our ‘Downloads‘ section to obtain the balcony guidance note.

The maximum span of the beam depends on a number of factors: the applied live load, the finishes, and the intended use of the floor. The spacing of the beams will also affect the maximum span.

We recommend a minimum sand and cement screed depth of 50mm (measured at the crown of the camber) to prevent any potential cracking.

Yes, load span tables can be found on each product information page.

Very cold weather can freeze the aggregate in the storage bins, which can slow down production. However, all projects are planned in advance to mitigate this.

Yes. Blocks are supplied by our brick and block division. Please visit Forterra.co.uk for details.

The information we require for each product is listed on our enquiry forms. These can be found in the ‘Request a Quote‘ section.

You can find the relevant contact details listed on our enquiry forms, which are located on the ‘Request a Quote‘ section of this website.

Yes, but it may be necessary to increase the thickness of the topping depending on the diameter of the heating pipe, the type of clip, and the specification of the concrete topping used. Any increase in concrete depth will need to be checked as it will add extra weight to the concrete beams. Specialist advice should be sought from the underfloor heating contractor prior to finalising an order for Jetfloor.

Yes. For more information about our beams visit the Jetfloor and Beam & Block Floors product pages.

We will provide an accurate quote as quickly as we can. Unfortunately, we can’t give a definite timeframe for quotes owing to the varying complexity and scale of projects.

Our standard range of retaining walls are designed to be fixed to a concrete slab to resist overturning and sliding.


Our experts are on hand to help you find the
most cost-effective solution.



For further technical advice about any of our
Bison Precast products.