Steel Joist System by Speedfloor Ltd

Steel Joist System

Speedfloor Ltd

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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

Scope of Use

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.