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Steel Joist System
Description

The Speedfloor Steel Joist system offers extended spanning capability and unmatched constructional flexibility in almost any type of construction.

The galvanised C sections feature unique fold-out ‘tab’ connectors in the perimeter channel for fast and accurate joining. There is also the option of pre punched holes for fast, efficient installation of services.

Speedfloor cold formed joists are manufactured from high strength, pre-galvanised steel coil conforming to AS 1397. The minimum mass coating of galvanising is 275g/m2. The standard steel used is grade 250 and has a minimum yield stress of 250MPa and a minimum tensile stress of 280MPa.

Assembled on site or delivered as a pre-assembled cassette, Speedfloor joists are easily configured for mezzanine floors, portal framed sheds, industrial platforms, residential mid floors and piled sub floors or integrated into timber framed buildings.

Key Features
  • Strong but lightweight joists allow for easy manoeuvrability
  • Available in the following sections with pre-punched service holes — 140, 150, 190, 240, 250 and 290mm
  • Pre-galvanised 275g/m2 steel for long-term corrosion protection
  • Pre-cut to length, for time and cost savings
  • Producer Statements are available on request
Categories
Steel
NZ Made
NZ Made
NZ-Owned Business
NZ-Owned Business
Scope of Use

Assembled on site or delivered as a pre-assembled cassette, Speedfloor joists are easily configured for mezzanine floors, portal framed sheds, industrial platforms, residential mid floors and piled sub floors or integrated into timber framed buildings.

Applications include:

  • mezzanine floors in commercial buildings
  • suspended floors in portal framed sheds
  • platforms for industrial structures
  • residential mid-floors
  • sub-floors on piled foundations
  • prefabricated and transportable units  
Limitations on Use
  • Use of the Speedfloor steel joist system outside of the published span tables or any project specific Producers Statement requires the advice of a structural engineer
  • When using treated timber in conjunction with the Speedfloor steel joist system a separation of these materials is required. A damp proof course (DPC) or similar equivalent will suffice
  • The use of exposed galvanised steel is not recommended in severe marine or highly corrosive environments. Advice on the use of the galvanised steel joist can be found in Speedfloor's Durability Statement
Statement of Building Code Compliance

The Speedfloor Steel Joist System will meet Building Code Clauses B1 and B2 when used in accordance with the manufacturer's specification and project specific Producer Statements.

The Speedfloor Steel Joist system has been designed to comply with the following NZS, AS/NZS and AS standards to meet the requirements of the Building Code.

  • NZS 3404
  • AS/NZS 1170.0
  • AS/NZS 1170.1
  • AS/NZS 1170.2
  • AS/NZS 1170.4
  • AS/NZS 4600
  • AS 4100
  • AS 3623
In-Service History

The Speedfloor Steel Joist system was designed in 2007 and fire tested at CSIRO in conjunction with Winstone Wallboards before being introduced to the New Zealand market. The system currently complies with 14 of the specifications in the GIB Fire Rated Systems technical literature. Speedfloor Steel Joist system has been successfully used in numerous projects throughout New Zealand.

B1 Structure compliant
Structure
B2 Durability compliant
Durability
BRANZ Appraised
BRANZ Appraised
Documents
Steel Joist System — Product Manual
GIB GBSJ 30 Steel Joists Data Sheet
GIB GBSJ 60 Steel Joists Data Sheet
GIB Noise Control Systems GBSJA 45 - Data Sheet
GIB Noise Control Systems GBSJA 60 - Data Sheet
Durability Statement
Maintenance Instructions
Warranty
Steel Joist System — Brochure
CAD/PDF Details
Back to Back SF Joist as Bearers
SF 140 or 190 Joist to LGSF Wall C
SF 140 or 190 Joist to LGSF Wall D
SF 240 or 290 Joist to LGSF Wall B
SF 290 Joist to LGSF Wall A
SF Joist to Concrete or Block Wall
SF Joist to Concrete Wall
SF Joist to Int-Ext Walls
SF Joist to Int-Ext Walls with Timber Bottom Plate
SF Joist to PFC Beam
SF Joist to Side of Concrete or Block Wall
SF Joist to Timber Wall
SF Joist to UB
SF Steel Joists Solid Blocking Detail
BIM
Steel Joist
Steel Joist Composite
Steel Joist Perimeter Channel

Speedfloor is the unrivalled roll-formed steel joist floor system, allowing for rapid deployment and superior spanning for the most demanding flooring projects.

Product Enquiries

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