T-Beam Floor Slab

The Bass Beams T-Beam is a Self Supporting Floor Slab manufactured with prestressed steel in precast concrete beams, 500mm wide at the top, which when laid side by side form the basis of a suspended concrete slab. Bass Beams are made in three cross sections, 130, 200 and 300mm overall depth. The top flange is always 500mm with only the rib depth varying.

The 130 Beam normally spans up to 5.5m
The 200 Beam normally spans up to 8.5m
The 300 Beam normally spans up to 12.0m

Key Benefits

  • Premises can remain occupied
  • Cost Effective
  • High Quality
  • Manufactured to SABS standard
  • Manufactured in a controlled factory environment
  • Quick & dry erection / installation
  • Convenient
  • No propping
  • Lightweight structure
  • No framework
  • Versatile
  • No shuttering
  • No Mess


  • Large unsupported spans of up to 12m
  • Domestic, commercial and industrial loading capacity
  • Convenient, Quick & Effective
  • Steep view sites are now attractive & easily developed with Bass Beams
  • Mezzanine floors erected into existing factories or warehouses without loss of production
  • Slabs of up to 600m2 can be erected/installed in a single day
  • Additional floor space improves and enhances the property value
  • Adaptable to meet Engineers requirements

Erection of Bass Beams T-Beam

  • A minimum bearing for all beams 100mm on each end unless otherwise specified.
  • A minimum screed of 50mm at 25mPa unless otherwise specified by the Engineer.
  • Reinforcing ref 100 / 193 BRC mesh is required and positioned 25mm from the top of the concrete unless otherwise specified.
  • Brick infill below all beams to be completed prior to pouring of concrete.
  • Load bearing walls must be in position and provide effective support to beams.
  • The surface of beams should be wire brushed and cleaned of all loose material prior to installation of mesh and concrete topping.
    No D.P.C. permitted between the surface of beams and concrete topping.
  • Electrical conduits can be laid on top of the beams and covered with the required topping.
  • It is important to note that Bass Beams cannot always be aligned perfectly.
    The joints may need to be skimmed should a good finish be required. Skim with rhinolite before painting.
  • Keep tarpaulins available to close up existing structures at the end of each working day. (Contractor to supply tarpaulins.)

Although very popular overseas there is only one supplier of Bass Beams in this country. The main advantage of the Bass Beams slab is that it is the most cost effective way to produce a suspended slab. This is due to its slender design which gives more strength than other systems. (The T-Beam is a perfect shape for combining concrete and steel and this shape is used extensively in bridges etc.) The shape of the beam is extremely adaptable to precast moulds and can be economically produced, even in small quantities. It’s inherent strength enables it to be propless and requires nominal insitu concrete.

With alterations to houses becoming the vogue, a new market has grown for the precast beams. Where the additions to the house are upstairs, the ribbed beam outsells all other types in that the existing ceilings remain intact and the new floor is never seen. The added bonus of the client not having to move out during the renovations makes Bass Beams so suitable to this market that even their “competitors” insist that Bass Beams be used.

There are customers that use the ribbed effect as a finished product by highlighting the rib in Tudor fashion or with a stipple finish.  A big market does however exist for the ribbed beam in domestic buildings where a suspended floor is needed on sloping sites, providing a basement area or where back-filling can be avoided.

Garages are almost entirely done by Bass Beams as the ribbed ceiling is acceptable as a garage ceiling.
When the suspended slab has to carry the vehicle the superior strength of the ribbed beam becomes a strong selling point.
The demand for more space with little land available ensures that concrete slabs will be in demand for many years to come.
Particularly in the growth of Industrial, commercial and domestic areas.