Beam & Block

Pre-stressed concrete beam and block flooring is a favoured option for the ground and first floor in many commercial projects as well as extensions and renovations. We offer various depths starting at 100mm. If you require more specific depths, please send us an enquiry and we will do our best to accommodate.

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Advantages of Beam & Block

A swift response to enquiries.

Suitable to construct in all weather.

Rot resistant.

Various spans available - a versatile option.

Quicker and easier to install.

A cheaper alternative.

Exceptional fire resistance.

Exceptional sound insulation.

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Solid standard dense and lightweight blocks are used with varying densities depending on the thermal, sound or load bearing requirement for the floor The blocks should have a minimum compressive strength of 7.0N/mm2 and transverse strength of 3.5N/mm2. Blocks will usually be 440 x 215 x 100mm but, the design software used to calculate loadings and produce beam layout drawings will accommodate all  floorblock types.

 

A sharp sand cement mix of 4 : 1 should be brushed into the cleaned, pre-wetted floor making sure that all joints are filled properly. Gaps between multiple beams must be filled with C30 concrete using a 10mm aggregate.

 

A half hour fire resistance is available in floors using 150mm deep beam rising to one hour fire resistance when using a 225mm beam.

 

Sand cement screed can be directly bonded to the grouted floor. Where insulation is used. a vapour barrier and minimum of 65mm screed is required. 

 

At KDS, we do not recommend the drilling or shot firing of any fixings directly into pre-stressed concrete floor beams.

 

Pre-stressed beams will have an upward camber, depending on the span.

 

KDS recommend a levelling screed for floating floor finishes.