A Perfect Pour, Floor After Floor

The Speedfloor Suspended Concrete Flooring is a unique, composite floor of steel and concrete that makes light work of pouring anything from single level, to multi-storied structures. There is no propping required. Simply assemble the joists, add structural supports and you are ready to pour.

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Downloadable Brochure

Speedfloor-Suspended Concrete Floor-Brochure

PDF | 645.88 kB

Downloadable Brochure

Speedfloor-Suspended Concrete Floor-Brochure

PDF | 645.88 kB

Downloadable Manual

Suspended Concrete Floor System - Product Manual

PDF | 2.57 MB



The Speedfloor Suspended Concrete Flooring is a proven performer in all types of construction, from steel structures, masonry buildings, poured in-situ or pre-cast concrete panels, to ICF, timber and cold formed steel frame construction. Manufactured from galvanised, high strength steel in a one pass roll-former, the frame is light enough to be manhandled into place for pouring. The ends are simply bolted to the joists which are then ready for transport to site with no propping or painting required.

Slabs can be 90mm to 220mm in thickness. Minimum compressive strength of 25 mPa to achieve composite action is normally achieved within the first 72 hours of curing, depending on environmental conditions.

See who is using Suspended Concrete Flooring and Steel Joist System

The Speedfloor Suspended Concrete Flooring and Steel Joist System meet Australian and New Zealand building standards, and have been used in many construction projects around New Zealand. Chances are you have parked in one of the carparks or been in a building with our Suspended Concrete Flooring or Steel Joist System. Use our interactive map to view sites around the country that use our products.

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Structural Standards

Structural Standards

The Suspended Concrete Floorng meets Australian and NZ composite structural standards and the NZ Building Code standards for fire and acoustic performance.

The suspended slab can be fire rated by applying the SPM method developed by Heavy Engineering Research Association  (HERA) without additional treatment of the steel joists or fire-rated plasterboard ceilings.

System Advantages

System Advantages

  • Requires no propping.
  • Reduces use of secondary steel, subject to structural requirements.
  • Joists can be manually positioned, reducing the need for cranage.
  • Provides a safe working platform during construction.
  • Services can pass through the pre-punched holes in the joist.

Suspended Concrete Floor Load vs Span Calculator

Use our free calculator to determine the combination of joist, concrete thickness, joist spacing, deflection limits and loads that will influence the solution that’s right for your project.

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You must first confirm that your engineer or architect has access to a Speedfloor design manual which can be obtained from your local Speedfloor franchise or from this Website. Armed with span, design loads (live, point and line loads) and any openings in the floor, he may then select from the appropriate load span tables, a joist and topping combination. This selection can be confirmed by your local Speedfloor franchise where he may suggest alternatives or any changes that may make installation easier.

There are a number of methods to fire rate the Speedfloor joist some of which are:

  • Fire rated ceiling
  • Cementatious coating
  • SPM method

Your local Speedfloor Franchise can help you with the selection as the different situations can require a different approach.

The SPM program is available from HERA. The program is easy to use and if you use the inputs set in the Speedfloor design manual then a confirmation that the selected fire rating period will be achieved. Alternatively if you send structural plans to your local Speedfloor Franchise, we will run the program and send the confirmation back to you.