Rollforming for Steel Framing
Globally proven. Locally made.

JOIST LOAD TABLES

Steel Floor Joist Systems

         

  • Floor Joist
  • Maximum Perimeter Channel
  • Cantilever Joists

RFS Floor Joist

Profile Web Flange Lip Material
400 Centres
Max Span*
450 Centres

600 Centres
RFS FJ140 140 45 15 1.55 3.9 3.8 3.5
RFS FJ190 190 45 15 1.55 4.7 4.5 4.2
RFS FJ240 240 45 15 1.85 5.7 5.5 5.1
RFS FJ290 290 45 15 2.50 6.9 6.7 6.2
*Maximum Span (m) of joists at Nominated Spacing (mm) for 1.5kPa floor live load typical for Residential applications.
RFS FJ140 140 45 15 1.55 3.5 3.4 3.1
RFS FJ190 190 45 15 1.55 4.3 4.1 3.6
RFS FJ240 240 45 15 1.85 5.1 5.0 4.5
RFS FJ290 290 45 15 2.50 6.2 6.0 5.6
**Maximum Span (m) of joists at Nominated Spacing (mm) for 3kPa floor live load typical for Commercial applications.
RFS FJ140 140 45 15 1.55 3.0 2.8 2.4
RFS FJ190 190 45 15 1.55 3.5 3.3 2.8
RFS FJ240 240 45 15 1.85 4.4 4.1 3.6
RFS FJ290 290 45 15 2.50 5.7 5.4 4.7
***Maximum Span (m) of joists at Nominated Spacing (mm) for 5kPa floor live load typical for Industrial applications.

Span when used in conjunction with HST C Purlins

RFS Maximum Perimeter Channel

RFS Joist Span up to: Composite Section Size 1.5kPa 3kPa 5kPa
3000* PC140 + HST200/18 4.2 3.6 2.8
PC190 + HST200/18 4.3 3.6 2.9
PC240 + HST250/18 5.1 4.4 3.6
PC290 + HST300/18 6.0 5.2 4.5

4000* PC140 + HST200/18 3.9 3.1 2.5
PC190 + HST200/18 4.0 3.1 2.5
PC240 + HST250/18 4.7 3.9 3.1
PC290 + HST300/18 5.6 4.8 3.9

5000* PC140 + HST200/18 3.7 2.8 2.2
PC190 + HST200/18 3.8 2.8 2.2
PC240 + HST250/18 4.5 3.5 2.8
PC290 + HST300/18 5.3 4.4 3.5

6000* PC140 + HST200/18 3.4 2.5 2.0
PC190 + HST200/18 3.4 2.5 2.0
PC240 + HST250/18 4.3 3.2 2.5
PC290 + HST300/18 5.0 4.0 3.2

*Tables relate to single span floors.
Other spans available when used back to back with another floor.
Additional tables using other HST C Purlins available.
Perimeter Channels must be fixed every 600mm with 2 x M12 bolts and washers

RFS Cantilever Joists

Profile Web Flange Lip Material Max Span Overhang at Spacing
          400 Centres 450 Centres 600 Centres
FJ140 140 45 15 1.55 0.9 0.9 0.8
FJ190 190 45 15 1.55 1.2 1.1 1.0
FJ240 240 45 15 1.85 1.5 1.5 1.3
FJ290 290 45 15 2.50 2.0 1.9 1.7

NOTE: Minimum Back Span required is 2 x Cantilever Span

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