Design Information

Stratco Tuffloor flooring conforms with the following Australian standards:

• AS 4100:1998 Steel Structures.
• AS/NZS 4600:1996 Cold-formed Steel Structures.
• AS/NZS 1170:2002 Structural Design Actions.
• AS 3623:1993 Domestic Metal Framing.

The following design loads are used in the determination of the span tables:

 Floor loads:

• 2.0 kPa, live load.
• 0.6 kPa, dead load.
• 1.8 kN, concentrated load.

Roof loads:

• 0.9 kPa dead load for a tiled roof.
• 0.3 kPa dead load for a steel roof.
• 0.25 kPa live load.

Wall loads:

• 0.8 kN/m dead load

Design Criteria

The Roof Load Width is the effective width of roof that the bearer is supporting.
Figure 1. 0 shows a simplified method for determining the Roof Load Width.

Section Properties

Joist	Section	Depth mm	Width mm	Lip mm	Thickness mm	Mass kg/m
	FJO18212	182	51	14	1.2	2.79
	FJO18215	182	51	14	1.5	3.54
	FJO18219	182	51	15	1.9	4.46
	FJO18224	182	51	16	2.4	5.62
	FJO23515	235	62	14	1.5	4.50
	FJO23519	235	64	15	1.9	5.68
	FJO23524	235	64	16	2.4	7.15

Bearer	Section	Depth mm	Width mm	Lip mm	Thickness mm	Mass Kg/m
	FBE18219	187	58	0	1.9	4.46
	FBE18224	187	58	0	2.4	5.62
	FBE23519	240	72	0	1.9	5.68
	FBE23524	240	72	0	2.4	7.15
All sections are galvanised to Z350 specifications and are rolled out of high tensile material with a minimum yield strength of 450MPa.

Joists

Bearers

Connections