the precast concrete advantage
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Benefits of Ultrafloor in Commercial Applications

Builder and Developer

The Ultrafloor system has many benefits for both the builder and developer:

  • Little or no formwork
  • Less reinforcement
  • Immediate safe working deck and access below
  • Service penetrations are easily installed
  • Totally flexible
  • Adaptable to any shape building
  • Reduces site handling
  • A clean, safe site with less waste
  • Excellent sound insulation properties
  • Short lead time

Primary Advantages over Alternative Forms of Construction

With Ultrafloor, generally, there is less opportunity for quality problems as the major strength component is the high strength prestressed concrete beams produced under a quality assured factory regime.

  • Compared with conventionally formed slab, there is less concrete used. No formwork cost, no moving of formwork,¬†minimal props, no stripping. Trades may continue working under the slab immediately after completion of the floor. Slab can be used as a working platform immediately. Minimal disruption to following trades.
  • Compared with fully precast floor Ultrafloor readily accommodates site tolerances. In precast floors, penetrations are difficult to make. With Ultrafloor, the beam positions can be adjusted to avoid penetrations by simply cutting the formboards to the required width and then with ease cutting the sheets around the penetrations.
  • Set-down for wet areas, cantilever balconies and areas where resilient layers are required for greater impact sound insulation are simple with Ultrafloor.
  • Ideal surface finish for either vinyl sheeting, ceramic tiles or carpet coverings.
  • Ultrafloor is monolithic, providing a rigid composite diaphragm. Fully precast construction does not have this flexibility or structural integrity.

Minimal Environmental Impact

Life Cycle analysis (LCA) studies by the University of New South Wales have shown that there is merit in using fibre-cement as the material has a relatively low embodied energy. Considering the amount of timber formwork that is saved by using the formboard and the thermal efficiency of the completed floor, there is added environmental benefit.

The high thermal mass of the concrete floor stabilises the internal temperature of the building, reducing heating and cooling costs.

Sound Insulation

The Ultrafloor system naturally has a high sound insulation performance. The basic floor system without a ceiling has a Rw (or STC) rating of 53, and with a suspended ceiling it increases to 57. Its impact sound resistance (as measured by the IIC or LNTW value) is good too and due to the inherent adaptability of the system can be increased by incorporating a resilient layer, floating floor surface, resilient-mounted ceilings etc.

Fire Rated Construction

Ultrafloor is non-combustible and the basic system has a proven 2-hour fire protection rating of FRL 120/120/120 as found by CSIRO testing in accordance with AS 1530.4-1990. With an extra 25mm of concrete topping, a three-hour fire resistance can be achieved. With an extra 50mm of topping and an increase in cover to the reinforcement in the precast beams, a four-hour fire rating is attained. Refer to Section 5 of the Ultrafloor Technical Manual.