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Series 1
Series 2

MATERIAL
Aluminium grating load bars are manufactured from aluminium grade 6060T6

TOP SURFACE
Typically supplied with a plain surface.  On our most popular products a Serrated surface is also available.  Please refer to the loading charts in this section of the catalogue to see which Aluminium grating types are available with a Serrated surface.

  • The "S" at the end of the code represents a Serrated surface, no notation represents a plain surface.  Grating will be assumed plain surface unless S is dictated at the end of a product code or is clearly specified as Serrated. Eg- 255/1S or 255/1 Serrated

EXAMPLE OF A SERRATED SURFACE PRODUCT CODE
325/2S = 32x5mm load bars at 40mm centres, cross bars at 100mm centres (Serrated surface)

EXAMPLE OF A PLAIN SURFACE PRODUCT CODE
255/1 = 25x5mm load bars at 30mm centres, cross bars at 100mm centres (plain surface)

FINISH

  • Mill Finish (M)
  • Anodised (A)
  • Powder coated (P)

STANDARD SHEET SIZE
Series 1 grating: 995mm (wide) x 5000mm (span)
Series 2 grating: 995 mm (wide) x 5000mm (span)
*Standard panel widths may vary slightly to what is indicated as there are minor manufacturing tolerances allowable during the process of manufacturing grating.
*Sizes above state grating manufactured from 5mm load bars (for 3mm load bar full panel width please -2mm off the below sizes eg- 993m wide for series 1 and 993mm wide for series 2).

CUSTOM SHEET SIZES

The standard length of aluminium flat bars manufactured in NZ is 5000mm, however dependant on the size of the job a mill run order can be placed meaning we can manufacture sheets anywhere up to 6000mm in load bar length to ensure economy as to best suit the required application.  Please enquire with Steel Grating Ltd if you have any questions regarding aluminium custom sheet sizes.

HOW TO SPECIFY / ORDER ALUMINIUM GRATING

  • Use the quick reference load charts or the main load charts to determine a suitable load bar size and series to suit your requirements. Eg- 255/1 or 325/2 etc...
  • Designate at the end of  the code with an S if you require a Serrated surface, no designation will be assume a Plain surface.
  • Designate that you require Aluminium grating by referencing A=Aluminium grating
  • Designate the finish / treatment you require;
    • M= Mill finish
    • A= Anodised finish (specify to what thickness)
    • P= Powder coated finish
  • Specify the size of the area or panel sizes(s) for the grating you require along with the load bar direction (span)
  • Specify any additional information we need to know for example if there are cut outs or penetrations in the grating, do we need to split cut outs between panels for installation, is kick plate required, are the grates banded or cut to size only etc...

EXAMPLES OF ORDERING/SPECIFYING ALUMINIUM GRATING

253/1 AM = 25x3mm plain load bars (series 1 grating, load bars at 30mm centres, cross bars at 100mm centres), Aluminium, Mill finish

255/2S AA = 25x5mm serrated load bars (series 2, load bars at 40mm centres, cross bars at 100mm centres) Aluminium, Anodised finish.

ADDITIONAL INFORMATION

MINIMUM SUPPORT DIMENSION

  • A minimum support of 25mm for grating up to 50mm deep.

It is generally recommended that the minimum grating support should be equal to the height of the grating load bar.

RECOMMENDED CLEARANCES 

  • 5mm (min) to 10mm (max) spacing between the grates.
  • 10mm clearance of grating from the edge of a wall or end of end of a support
  • When grating sits in an angle minimum recommended clearance each side is equal to the thickness of the angle.

ALUMINIUM GRATING QUICK REFERENCE LOAD CHARTS

ALUMINIUM GRATING SERIES 1

ALUMINIUM GRATING SERIES 2

(1) 2.5 kPa, 5mm deflection- Light use for access and working, AS 1657

(2) 4kPa, 5mm deflection- High / Repetitive us, AS/NZS 1170

(3) 5kPa, 5mm deflection - High / Repeitive use with placement of objects (infrequent), AS/NZS 1170

(4) 7.5 kPa, 5mm deflection - High / Repetitive use with placement of object (frequent), AS/NZS 1170

SERIES 1: ALUMINIUM GRATING LOAD CHART

SAFE LOAD AND DEFLECTION TABLE

(1) U: Safe Superimposed Uniformly Distribute Load - kPa

(2) D: Deflection due to the Safe Superimposed Load - mm

(3) D4: Deflection due to 4kPa applied Load - mm

(4) Span to the left of the heavy line have a deflection of less than 5mm for 4kPa UDL

(5) The design has been based on the principle of the aluminium Allowable Stress Design and Ultimate Limit State Design according to AS/NZS 1664.1:1997 and AS/NZS 1664.2:1997

(6) The load bar aluminium alloy is 6060 T6 and the cross bar is 6060 T5

SERIES 2: ALUMINIUM GRATING LOAD CHART

SAFE LOAD AND DEFLECTION TABLE

(1) U: Safe Superimposed Uniformly Distributed Load - kPa

(2) D: Deflection due to the Safe Superimposed Load - mm

(3) D4: Deflection due to 4kPa applied Load - mm

(4) Span to the left of the heavy line have a deflection of less that 5 mm for 4kPa UDL

(5) The design has been based on the principal of the aluminium Allowable Stress Design and Ultimate Limit State Design according to AS/NZS 1664.1:1997 and AS/NZS 1664.2:1997

(6) The load bar aluminium alloy is 6060 T6 and the cross bar is 6060 T5