The Unispan flooring system consists of a series of 75mm
thick precast, prestressed concrete slabs with a reinforced
concrete topping. This composite construction allows clear spans
of up to 8.0 metres.
Most contractors agree that Unispan is a simple form of
construction. Slabs are typically 1200mm or 2400mm wide.
Unispan is easily adapted to any floor plan and individual
slab widths can be custom made to suit individual requirements.
Service holes can be allowed for in the slabs. Please check with
your nearest Stresscrete branch first.
The Unispan flooring system is truly maintenance free. The
slabs are cast on a steel mould and the soffit is flat. This
means that Unispan may be left untreated, painted or
decoratively sprayed to match colour schemes. Painted surfaces
may require a thin plaster coat.
A major practical benefit of a concrete floor is its ability
to reduce noise transmission. Unispan concrete floors are quiet
and do not creak with temperature and moisture changes. The
table below shows sound the transmission ratings achieved by
Balconies and decks can be created by cantilevering the slab
up to 2000mm, while including a weather step at the building
Unispan slabs must be handled and stacked at two points, by,
or directly beside, the lifting eyes.
It is recommended that Unispan slabs be seated 75mm onto the
supporting walls/beams and bedded on wet mortar or plastic
bearing strips to ensure an even bearing at the correct level.
65mm Unispan, 60mm topping, no ceiling
65mm Unispan, 60mm
topping + 9.5mm Gib Board ceiling
Values calculated by
Hegley Acoustic Consultants.
* Values assume a 25mm
air gap between the underside of the
Unispan and Gib Board ceiling.
FIRE RESISTANCE RATING
Standard Unispan can provide up to a 1.5 hour FRR.
Unispan slab strength = 42 MPa at 28 days. Topping = 20 MPa
at 28 days.
FURTHER TECHNICAL INFORMATION
Specifications for the manufacture, transport and erection of
Unispan, and standard details for typical situations, are
available from your nearest Stresscrete branch. Experienced and
qualified staff will be pleased to discuss design and fixing
details. Refer general notes.