Metrix Timber I-Joist

Metrix Timber Flooring Main Image Flooring Application 1 Flooring Application 2 Flooring Application 3

Specifications

  • Member Type: Single Span Floor Joist
  • Span Type: Single Span – Span distance is the internal measurement between structural supports element.

Dimensional Data

  • Top of floor joist restraint: Continuous restraint
  • Bottom Edge Restraint: max 600mm

Basic Loading Data

  • Flooring + Ceiling 40 kg/m2
  • Floor Live Load = 1.5kPa/1.8kN
  • Standard AS1720.3 Dynamics for 1.0kN Static Load
  • Min. End Bearing Length = 35mm
  • Min. Intermediate Bearing Length = 45mm

Joist Span Table

Joist Size Joist Centres Span Floor Dead Load Residential Load Max. Deflection
300 400 450 480 600
240x63 510 480 460 460 430 Single Span 40kg/m2 Class 1/10a 1.5kPa/1.8kN 9mm
0 0 0 0 0
300x63 480 540 530 520 490 Single Span 40kg/m2 Class 1/10a 1.5kPa/1.8kN 9mm
0 0 0 0 0
240x63 460 430 410 410 380 Single Span 65kg/m2 Class 1/10a 1.5kPa/1.8kN 9mm
0 0 0 0 0
300x63 520 490 470 460 440 Single Span 65kg/m2 Class 1/10a 1.5kPa/1.8kN 9mm
0 0 0 0 0
240x63 570 530 510 500 470 Single Span 40kg/m2 Class 1/10a 1.5kPa/1.8kN 15mm
0 0 0 0 0
300x63 650 600 590 580 540 Single Span 40kg/m2 Class 1/10a 1.5kPa/1.8kN 15mm
0 0 0 0 0
240x63 540 510 490 480 460 Single Span 65kg/m2 Class 1/10a 1.5kPa/1.8kN 15mm
0 0 0 0 0
300x63 620 580 560 550 520 Single Span 65kg/m2 Class 1/10a 1.5kPa/1.8kN 15mm
0 0 0 0 0

Flooring vs Max. Centres

Verify the thickness of the flooring prior to installation to ensure it can adequately span the intended maximum center spacings.

  • Joists with a Max. Centre spacing of 450mm or less = 19mm min
  • Joists with a Max. Centre spacing of 600mm or less = 22mm min

Bearing

It is presumed that the design incorporates minimum bearing conditions of 35mm or more. This may involve a solid bottom edge bearing, such as a wall, or a face-fixed metal hanger.

Additional information

Metrix Timber has made diligent efforts to ensure the accuracy and reliability of the data and information presented in this document. It is important to note that this information serves as a general guide and should not be considered a substitute for professional advice.

We strongly advise seeking professional guidance tailored to your specific design needs and circumstances. Metrix Timber disclaims responsibility for any inaccuracies, omissions, or errors in this information and will not be held liable for actions taken based on this information.

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