SERIES 1
SERIES 2
SERIES 3

MATERIALS
Mild Steel grating load bars are manufactured from steel that complies with AS/NZS 3679.1:2010 grade 300 (or equivalent)

 

TOP SURFACE

Typically supplied with a plain surface. On our most popular products a Serrated surface (S) is also available. Please refer to the loading charts in this section of the catalogue to see which Mild Steel 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 the 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 PLAIN SURFACE PRODUCT CODE:
255/1 = 25x5mm load bars at 30mm centres, cross bars at 100mm centres (plain surface)

 

FINISH

  • Black (untreated/raw) finish (U)
  • Hot dip galvanised finish to meet the requirements of AS/NZS 4680 (G)
  • Powder coated finish (P)



STANDARD SHEET SIZE
Series 1 grating: 995mm (wide) x 5800mm (span)
Series 2 grating: 1005mm (wide) x 5800mm (span)
Series 3 grating: 965mm (wide) x 5800mm (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 sizes eg- 993mm wide for series 1 and 1003mm wide for series 2).

HOW TO SPECIFY / ORDER MILD STEEL GRATING

  • Use the quick reference load charts or the main load charts to determine a suitable load bar size and series to suit your loading 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 assumed a Plain surface.

*check which grating options are available with a serrated surface within the load charts

  • Designate that the product you require is Mild Steel by referencing M = Mild Steel grating
  • Designate the finish you require:
    • U = Black (untreated / raw finish)
    • G= Hot dip galvanised to AS/NZS 4680
    • P = Powder coated finish
  • Specify the size of the area or panel size(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 MILD STEEL GRATING

405/ 1 MU = 40x5mm plain load bars (series 1 grating, load bars at 30mm centres, cross bars at 100mm centres) Mild Steel, Untreated finish
325/2S MG = 32x5mm Serrated load bars (series 2, load bars at 40mm centres, cross bars at 100mm centres) Mild Steel, Galvanised finish.

 

MILD STEEL GRATING QUICK REFERENCE LOAD CHARTS

Series 1 Grating

Series 1 Grating

Series 2 Grating

Series 2 Grating

Series 3 Grating

Series 3 Grating

(1) 2.5 kPa, 5mm deflection- Light use for access and working, AS 1657
(2) 4 kPa, 5mm deflection- High / Repetitive use, AS/NZS 1170
(3) 5 kPa, 5mm deflection – High / Repetitive use with placement of objects and tools (infrequent), AS/NZS 1170
(4) 7.5 kPa, 5mm deflection – High / Repetitive use with placement of objects and tools (frequent), AS/NZS 1170
(5) *product is low use (held in small quantities or not commonly stocked) please contact Steel Grating Ltd for information on quantities regarding these items

SERIES 1: MILD STEEL GRATING LOAD CHART

SAFE LOAD AND DEFLECTION TABLE

(1)The data provided in the above table based on the critical design case of the Allowable Stress Design and the Ultimate Limit State Design. The Mild steel is Grade 300 with a yielding strength of 320 MPa according to AS3679-2006, the allowable design stress is 211 MPa.
(2) U: Safe Superimposed Uniformly Distributed Load – kPa
(3) D: Deflection due to the Safe Superimposed Load – mm
(4) D4: Deflection due to 4 kPa applied load – mm
(5) Span shown to the left of the heavy line have a deflection of less than 5mm for a 4kPa UDL
(6) Add 12% to the mass provided for galvanising and fabrication banding bars

SERIES 2: MILD STEEL GRATING LOAD CHART

SAFE LOAD AND DEFLECTION TABLE

(1)The data provided in the above table based on the critical design case of the Allowable Stress Design and the Ultimate Limit State Design. The Mild steel is Grade 300 with a yielding strength of 320 MPa according to AS3679-2006, the allowable design stress is 211 MPa.
(2) U: Safe Superimposed Uniformly Distributed Load – kPa
(3) D: Deflection due to the Safe Superimposed Load – mm
(4) D4: Deflection due to 4 kPa applied load – mm
(5) Span shown to the left of the heavy line have a deflection of less than 5mm for a 4kPa UDL
(6) Add 14% to the mass provided for galvanising and fabrication banding bars
(7) *Product is low use (held in small quantities or not commonly stocked) please contact Steel Grating Ltd for information on quantities regarding these items.

SERIES 3: MILD STEEL GRATING LOAD CHART

SAFE LOAD AND DEFLECTION TABLE

(1)The data provided in the above table based on the critical design case of the Allowable Stress Design and the Ultimate Limit State Design. The Mild steel is Grade 300 with a yielding strength of 320 MPa according to AS3679-2006, the allowable design stress is 211 MPa.
(2) U: Safe Superimposed Uniformly Distributed Load – kPa
(3) D: Deflection due to the Safe Superimposed Load – mm
(4) D4: Deflection due to 4 kPa applied load – mm
(5) Span shown to the left of the heavy line have a deflection of less than 5mm for a 4kPa UDL
(6) Add 14% to the mass provided for galvanising and fabrication banding bars
(7) Series 3 grating does not comply with the requirements of AS 1657 due to the openings exceeding the limits stated in AS1657 design criteria.

(8) *Product is low use (held in small quantities or not commonly stocked) please contact Steel Grating Ltd for information on quantities regarding these items

INSTALLATION DETAIL FOR MILD STEEL GRATING

GALVANISED FIXING CLIPS

Steel Grating Ltd provides a universal fixing clip designed to suit our series 1, series 2 and series 3 Mild Steel grating options with the load bar sizes from 20mm up to 50mm. These clips comprise of a top "M"clip designed to saddle over the top of the grating and a bottom "J"clip that when applicable is designed to fasten the underside of the grating to the support. The bottom clip captivates the nut meaning that fastening the grating to the supports can be done from the top side of the grating for ease of installation.

.

Fixing clip with series 1 grating
Fixing clip with series 2 grating
Fixing clip with series 3 grating
  • 4 fixing clips per m2 is recommended with additional clips to be used on longer grates at the intermediate spans.
  • Minimum 4 clips per panel is recommended.

*In areas of lateral load movement or vibration fixing clips are not generally recommended.

WELDING GRATING TO ITS SUPPORT
Welding grating to the supporting structure is deemed a suitable process for permanently installed grating or in areas of vibration and lateral load movement. Steel Grating recommends a 25mm long, 6mm fillet weld at  1000mm centres. Minimum number of welds per panel is 4.

WELDING FIXING LUGS TO GRATING
Fixing lugs can be provided on grates if necessary. This comprises of a flat bar welded between the load bars with a hole drilled in it. The fixing lug is usually located flush with the bottom side of the grating and the centres of the holes for the fixing lugs are determined by the spacings of the load bars.


ADDITIONAL INFORMATION

MINIMUM SUPPORT DIMENSION

  • A minimum support of 25mm for grating up to 50mm deep.
  • A minimum support of 50mm for 50mm and 65mm deep grating.

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

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

FRP GRATING

MOULDED FRP MANUFACTURING PROCESS

Liquid resin and continuous fiberglass rovings are sytematically laid in a mould, layer after layer to produce the desired thickness and panel dimensions. The finished moulds are then set aside to cure. The one-piece interwoven mesh construction of moulded fiberglass grating produces a product with optimal corrosion resistance and bi-directional strength. Since the fiberglass grating is "cast" in one piece, there is no mechanical joint between bearing bars. The high percentage of resin (65%) in moulded fiberglass grating offers superior corrosion resistance and optimal impact resistance. Moulded fiberglass gratings with a square mesh pattern offer increased load capacity and panel utilization due to its bi-directional trait. Being of one-piece construction, the fiberglass grating distributes loads throughout the fiberglass grating section.

ADVANTAGES OF FRP MOULDED GRATING

  • Light weight
  • Chemical corrosion resistance
  • Non sparking
  • Non electrically conductive
  • Non magnetic
  • Tapered bars all debris to easily fall through
  • Standard mesh has a 70% open area
  • Mini Mesh has a 45% open area

FRP GRATING PATTERNS

FRP Grating is available in two pattern types (stocked)

STANDARD MESH

38X38MM centre to centre

 

MINI MESH

19x19mm centre to centre

COMMONLY STOCKED FRP GRATING TYPES

Table above shows the FRP grating products that are commonly stocked.  Other combinations of type, resin, surface and colour that are not stated above are available but are manufactured to order.

STANDARD SHEET SIZES

FRP grating comes in one standard sheet size 1220x3660mm ex stock.  Other sheet sizes are available but are manufactured to order,  For non standard panel sizes please call Steel Grating Ltd to discuss what options are availalbe to suit your requirements.

CUTTING TO SIZE

In addition to supplying stock sheets we can also cut FRP grating to the shapes and sizes you require along with any cut outs or penetrations.

TOP SURFACE

FRP grating comes standard with two different surfaces for slip resistance.

  • Grit top surface
  • Concave top surface

RESIN SELECTION

Isophthalic Polyester (Type I) - Industrial grade resin great for environments where fiberglass grating may occasionally be in contact with harsh chemicals due to splashes or spills.

Vinyl Ester (Type V) - Developed to withstand frequent and direct contact in the harshest of chemical environments.  Type V is ideal for use in acidic and caustic environments.

FLAME SPREAD RATING

Isophthalicpolyester resin and Vinyl ester resin have an ASTM-E84 fire class rating of class1, 25 or less.

Phenolic (Type P) - Best choice for applications where fire resitance, low smoke and low toxic fume emissions are critical.  Penolic resin grating is not stocked but available to order. Please contact Steel Grating Ltd to discuss the availability of phenolic resin grating.  Please note: Phenolic resign grating is only available in a reddish brown colour.

 

Please contact Steel Grating for any non standard resin types, surfaces and colours.

FRP GRATING LOAD CHART

*(SM) denotes standard mesh, (MM)  denotes mini mesh profile.

 

HOW TO SPECIFY/ORDER FRP GRATING

  • Designate that you require FRP grating by putting FRP at the start of the code.
  • Designate the thickness of FRPgrating: 25mm, 32mm or 38mm.
  • Designate whether you require standard or mimimesh grating
    • 38x38mm Standard Mesh is denoted by SM
    • 19x19 Mini Mesh is denoted by MM

DESIGNATE RESIN TYPE

  • I= Isophthalic polyester resin or
  • V= Vinyl ester resin

FOLLOWED BY SURFACE FINISH

  • G= Grit top surface
  • C= Concave top surface

THEN FINALLY COLOUR

  • Y= Yellow
  • G= Green
  • L= Light grey
  • D= Dark grey

EXAMPLE FOR ORDERING / SPECIFYING FRP GRATING

FRP25 SM IGG - FRP grating 25mm thick, 38x38mm Standard Mesh, Isophthalic polyester resin, Grit top surface, Green in colour.

FRP32 SM ICY - FRP grating 32mm thick, 38x38mm Standard Mesh, Isophthalic polyester resin, Concave top surface, Yellow in colour

 

FRP GRATING CHEMICAL RESISTANCE CHART

FRP GRATING CHEMICAL RESISTANCE CHART

MAX- Temperature for Isophthalic polyester 71°C / Vinyl Ester 85°C

C - Continuous exposure of the grating to the temperature and chemical environment listed above

F - Frequent exposure of the grating to splashes and spills to the temperature and chemical environment listed above

I - Infrequent exposure of the grating to splashes and spills to the temperature and chemical environment listed above with the spill being immediately cleaned up / washed from grating.

N - Not recommended for the temperatures and concentrations listed above

The corrosion data listed above is for general information only. Resin Manufacturers have provided test data that indicates that the specific resin can withstand the corrosion conditions listed.  Steel Grating Ltd believes this information to be true and correct.  In certain cases testing for specific environments is recommended.

CUTTING & INSTALLATION

Cutting: FRP grating can be cut with a variety of different cutting tools.  For best results we recommend a heavy duty rotary saw with a masonry, carbide or diamond tip blade.  Make sure that the grating is on a steady and even surface to help prevent shifting or moving of the grating that can cause chipping of the grating surface. Please ensure you wear gloves, full length overalls, a face shield and a dust mask when cutting FRP grating.  Always cut FRP grating in a well ventilated area or where mechanical extraction of the dust particles is available.

Finishing: All cut surfaces should be coated with resin to prevent corrosion of the glass fibres,  A coating of a two part resin or comparable to the resin used to manufacture the grating should be used.

APPEARANCE OF FRP GRATING:

Unlike traditional Steel and Aluminium grating when FRP grates are cut they do not have a banding bar welded to the cut edges (the cut edge becomes the finished edge).  Where possilble to make FRP grating look neat and presentable we recommend that any sheets cut to size along with cut outs or penetrations be made to the nearest whole square dimension.  This prevents any grates with open ends or fingers as we call them.  This is not always practical but with enough forward planning this can be achieved.

FRP GRATING FIXING CLIPS

Stainless steel "M" Clips:

M clips are designed to clamp two of the FRP grating load bars to the supporting member.  This provides excellent holding capacity as it restrains movement in both directions. "M" clips are available for both Standard and Minimesh grating.

Stainless steel "C" Clips

C Clips are designed to hold two grating panels together to minimise differential deflections when their joints fall between supports.  The low nut is secured to the bottom of the clips so these can be installed from the top side of the grating.  C Clips are available for standard mesh grating only and are designed for 25mm and 38mm thick FRP grating.

"M" Clips
"C" Clips

*the Recommended Minimum Support for FRP grating is 40 mm.

STAIR TREAD TYPES

MILD STEEL AND ALUMINIUM

We can supply  stair treads at any width and length to suit your application.  Stair treads can be supplied with either a banded end / welded fixing or bolted end to suit your requirements.  To complement our stair treads we can also provide them with no nosing, a floor plate nosing or a  yellow abrasive nosing to best suit your application.

*Photos above show stair treads manufactured from mild steel galvanised grating

Please note* AS1657 states "the nosing shall be such that the edge of the stair tread is clearly visible against the background"

RECOMMENDED MAXIMUM SPAN FOR MILD STEEL AND ALUMINIUM GRATING TYPES

MILD STEEL

ALUMINIUM

*Please note "the going shall not be less than 215mm" to comply with AS1657

STANDARD END PLATES: MILD STEEL AND ALUMINIUM

Standard end plates for stair treads are manufactured from 65x5mm flat bar for grating up to 40mm in depth.  Non standard end cleats can be made on request.

RECOMMENDED END PLATES FOR VARIOUS STAIR TREAD WIDTHS

 

For 125mm stair tread width
For 155, 165, 185mm stair tread widths

 For 205mm, 215mm, 245mm, 275mm, 285mm, 305mm, 325mm Stair Tread Widths

RECOMMENDED HOLE CENTRES FOR SLOTTED END PLATES

  • 205, 215mm = 100mm centres
  • 245,275,285,305,325mm = 125mm centres

 

TOE BOARDS ON STAIR TREADS

Toe Boards can be incorporated into any of the above stair tread types in both Mild steel and Aluminium.  A toe board is typically a flat bar welded to the back edge of a stair tread at a nominated height above the stair tread to close the openings  between risers. Toe boards are optional and need to be specified if required at the time of ordering/quoting.

FRP STAIR TREADS

RECOMMENDED MAXIMUM SPANS FOR FRP STAIR TREADS

*The recommended maximum spans are for static conditions. 
*Deflections for impact loads or dynamic load will be in excess of 5mm
*Long term loads will result in additional deflections due to creep in the material
*For applications at elevated temperatures, please consult Steel Grating Ltd
*Moulded stair tread spans are based on whole square dimensions as this is what is required for the installation of moulded FRP stair treads.

 

*FRP stair treads require a minimum of 40mm support surface at each end for the grating to sit on and require 4 off stainless steel "M" clips per stair tread for fixing to the supporting structure.

BALL STANCHIONS

Steel Grating manufactures ball Stanchions that comply with the requirements of AS1657 in both design and for imposed actions (loadings).  Our standard stanchions have been theoretical and physically tested for imposed actions in accordance and as required by AS1657-2013 to give you peace of mind for a complete tubular guardrail system.  Along with our standard Ball Stanchion posts we can also supply horizontal and angle closure bends, railing, rail bends, kick plate mounting brackets and kick plate where required for fast and easy onsite installation.

STANDARD STANCHION DIMENSIONS

*Footing sizes for IG and IGA stanchions need to be determined by the civil engineer.

STANDARD STANCHION DIMENSIONS CONTINUED

*Footing sizes for IG and IGA stanchions need to be determined by the civil engineer.

PROFILE AND SPACINGS

Our standard Stanchion posts are manufactured from the following material types.

*Unless specified otherwise all stanchions are manufactured from standard (medium wall thickness pipe)

*When spaced at maximum 2000mm centres for standard stanchions (medium wall thickness pipe) and at maximum 2500mm centres for heavy stanchions (heavy wall thickness pipe) our standard stanchions will comply with the loading requirements of AS1657 - 2013

BASE PLATES

STANDARD
ANGLE MOUNT
CORNER

Standard base plates are used on ALL stanchions except PC (platform corner) and AM Stanchions from 15° to 49° unless specified otherwise.

Angle mount base plates are used on AM stanchions only between 15° and 49° unless specified otherwise,

Corner base plates are used on PC (platform corner) stanchions only unless specified otherwise

Custom base plates can be manufactured to suit our stanchions, these would need to be requested at the time of quoting / ordering.

*Base plates are manufactured from 75 x 10mm flat bar.

*Holes are 18mmØ and require 2 x M16 bolts per base plate for installation.  Chemical anchors are recommended when fixing to concrete.

CLOSURE BENDS

 

HORIZONTAL CLOSURE BENDS: HCB
ANGLE CLOSURE BENDS: ACB

Standard closure bends are manufactured from 32nb black or galvanised medium wall thickness (3.20mm) pipe with a 135mm radius at the centre line.

Heavy closure bends are manufactured from 32nb black or galvanised heavy wall thickness (4.0mm) pipe with a 135mm radius at the centre line.

40nb closure bends When 40nb pipe is used as the top railing closure bendsare manufactured from 40nb pipe. All bends manufactured from 40nb pipe have 100mm radiuse at the centre line.

RAIL BENDS

  • Rail bends can be manufactured from 25nb, 32nb and 40nb pipe in medium wall thickness (3.20mm) and heavy wall thickness (4.0mm) black or galvanised pipe
  • Standard rail bends are 300x300mm centre to centre. Custom rail bends can be manufactured on request. L1 + L2 must total 6500mm or less
  • 25nb and 32nb pipe will have a 135mm radius at the centre line / 40nb pipe will have a 100mm radius at the centre line

KICK PLATE MOUNTING BRACKETS

KICK PLATE MOUNTING BRACKET DETAIL

* Slot on kick plate mounting bracket allows 7mm up/down adjustment

* Kick plate mounting brackets will be positioned on the right hand side of stanchion when viewed from the walking surface unless specified otherwise or drilled left side only

* If kick plate mounting brackets are required on stanchions this needs to be clearly specified at the time or ordering / quoting

* Kick plate can be bolted or welded to the kick plate mounting bracket.  Slot is designed for an M12 bolt.

* To comply with AS1657 you must have a minimum of 100mm of kick plate above the wakling surface, and a maximum gap of 10mm between the walking surface and the underside of the kick plate.

SO STANCHION OFFSET DETAIL

Recommended SO stanchion offsets for the following:

110mm offset for 150x75, 180x75, 200x75 and 230x75 Channel

110mm offset for 200UB and 250UB Universal beams

130mm offset for 250x90, 300x90 and 380x100 Channel

130mm offset for 310UB, 360UB, 410UB and 460UB Universal beams

140mm offset for 530UB Universal Beams

 

DRILLED ONE SIDE ONLY

When required stanchions can be drilled one side only on both the top and intermediate rails or only on the top or intermediate rail.  Drilled one side only stanchions need to be nominated at the time of ordering along with the correct nomination in which you require. Nomination is determined when viewed from the walking surface.

CUSTOM STANCHIONS

Along with our standard stanchions we can also manufacture one ball or multi ball stanchions to suit your requirements.  The heights, ball centres, ball drillings and type of stanchion will need to be specified.

*Please note one ball and multi ball stanchions do not meet the requirements of AS1657

INSTALLATION

Rails should be fixed to the stanchion ball by welding;

  • At least every stanchion post when spaced at 2000mm or;
  • At least every 3m when stanchions are spaced at closer intervals.

 

SLIP JOINTS

Steel Grating Ltd can supply slip joints when required. Slip joints are used when

  • A rail joint cannot be done inside the stanchion ball.
  • As an expansion joint for long runs of guard railing.

INSTALLATION OF A BALL STANCHION GUARDRAIL SYSTEM

Please contact Steel Grating for installation details and procedures for site installation of our guard rail system.

ANCILLARY ITEMS

YELLOW ABRASIVE NOSING'S AND GRIP PLATE

Steel Grating Ltd supply FRP yellow abrasive nosing's for the leading edge of stair treads and landings where required.  These provide a superior non-slip surface and being yellow in colour provides excellent definition against the background as per the requirements of AS1657.  In addition to our yellow abrasive nosing's we also supply a 3mm thick yellow abrasive sheeting (Grip plate) for installation on any flooring surfaces.  Our yellow abrasive nosing and grip plate are ideal in any wet, slippery, oily or dirty conditions.

Our yellow abrasive nosings and grip plate can be easily installed to new areas or existing problematic areas.  Being of fibre glass construction this provides a tough, durable and long lasting solution to meet your requirements while also providing excellent UV and chemical resistance.

Our yellow abrasive nosings and grip plate have been tested in accordance, and comply with AS/NZS 3661.1:1993(wet) for pedestrian slip resistance

YELLOW ABRASIVE NOSINGS:

Dimensions: Any length up to 3000mm x 50mm wide x 25mm deep x 3mm thick.

YELLOW ABRASIVE GRIP PLATE:

Standard sheet size: 1200mm x 2400mm x 3mm.

From our standard sheet size we can cut into strips, squares, rectangles or any shapes to suit the requirements of the area.

APPLICATIONS:

  • Steel, Aluminium and FRP grating stair treads and landings
  • Floor plate stair treads and landings
  • Wooden stair treads and landings
  • Concrete stair treads and landings

GRATE PLATE:

Steel Grating Ltd can supply Mild Steel and Aluminium grating with 3 or 5mm checker plate welded to the top side of the grating.  Checker plate can be welded to any of our standard grating types we supply.  Checker plate provides a solid surface to the grating.  The combination of checker plate and grating maximises the spanning capabilities for a variety of applications.

GRATE MESH:

Steel Grating Ltd can supply any Mild Steel gratings with a light gauge mesh welded to the top side or underside of our grating to prevent small objects and tools from falling through the grating to areas below.  When a light gauge mesh with the dimensions of LWD 30mm x SWD 12mm (1622F) is used, this complies with AS1657 clause4.5.

VEHICLE LOADINGS

Steel Grating Ltd drainage grates and sump covers have a large amount of open area to allow liquid to drain easily while still providing strength and economy to support heavy loads.  We recommend series 1 grating for drainage grate and sump covers for maximum strength.  We have categorised our grating into the 5 most common vehicle usages.  Please refer to the table below that states what each of our grating types will clear span for the different vehicle types.

LOAD DATA BASED ON THE FOLLOWING CRITERIA

  • Vehicles assumed to be fully laden
  • Spans shown in the table are clear spans
  • Assumed minimum support width = to load bar depth
  • Impact factor of 1.3 for moving vehicle applied
  • All vehicles travelling parallel to span of grating
  • The span of the grating must not be greater than the wheelbase of the vehicle

Steel Grating can also supply MSA trench grate frames if required. Please contact Steel Grating Ltd for more information on these.

LOAD BAR SPACING CHART

This chart indicates the dimensions of each grating type to the nearest load bar for series 1,2 & 3 grating and the nearest full square for FRP grating.

*Please note spacings for series 1,2 & 3 are for 5mm thick load bars.  For 3mm bars minus 2mm of each spacing. Eg- for series 1 grating 9 bars = 243mm, 21 bars = 603mm.

*FRP grating load bar centres are 38.1mm

TERMINOLOGY

1. Load Bar- The flat bar standing on its edge that carries the load.

2. Cross Bar- The twisted rod or flat bar fixed at 90° to the load bars. The cross bars hold the load bars together.

3. Banded / Banding- this is the process of welding a trim bar around the cut edges of the grating.

4. Span- This is the overall length of the grate measured parallel to the load bar ie: the load bar length

5. Width- This is the overall width of the panel or landing measured at 90° to the load bar.

6. Serrations- Notches taken out of the top of the load bar to enhance skid resistance.

7. Nosing- A member on the front edge of the stair tread or landing grate to help create definition and enhance skid resistance.

8. Kick plate- Typically in the form of a large flat bar welded to the edge of the grating or mounted to the stanchion post. AS1657 requires minimum 100mm above the walking surface.

9. Cut outs- Areas of flooring removed to permit passage for plant, structural members or stanchion posts etc.

 

MANUFACTURING TOLERANCES

MANUFACTURING TOLERANCES