LYSAGHT INTERLOK™ II

Product Description and Features

LYSAGHT INTERLOK™ II is a roll formed, long length, interlocking grating system suitable for a wide range of applications. It combines strength and light weight with the corrosion protection of galvanising to provide a long life, slip resistant deck.

• Available in two profiles, two thicknesses and two surfaces and is nominally 225mm wide
• Galvanised finish for maximum durability & minimum maintenance
• The slots provide 29% open area to allow easy cleaning and free passage of water, air and light
• Lightweight and easy to handle, economical to transport
• Simple installation - no welding required
• Can be simply dismantled and reassembled

Produced to: LYSAGHT INTERLOK™ II grating meets the requirements of AS 1657, 'Fixed Platforms, Walkways, Stairways and Ladders'

Common Uses of this product

Racking, shelving, walkways, catwalks, platforms, ramps and deckings.

Warnings

• If it is intended to be used within 1 km of salt marine locations, or severe industrial or unusually corrosive environments, please Contact Us
• Should be installed on galvanised or painted supports
• If INTERLOK™ II is welded, the coating damage around the welds should be cleaned and retouched with zinc rich paint, to prevent premature corrosion.

Product Details

Schematic

INTERLOK™ II grating is available in two profiles, two thicknesses and two surfaces, and is nominally 225 mm wide.

The MF (male/female) profile is used for most applications, as the male and female legs are designed to inter-lock adjacent lengths of grating. The DM (double male) profile is used for stair treads and as a closer to provide a neat finished edge to an INTERLOK™ II platform or walkway.

INTERLOK™ II Regular has a surface of stiffened transverse ribs and is ideally suited for general access and any nonhazardous application where the decking cannot become slippery due to oil, water, etc. This includes such applications as interior walkways and platforms, mezzanine floors, shelving in high density storage systems, please view our page LYSAGHT INTERLOK™ II Storage Systems.

INTERLOK™ II Anti-skid has teeth formed in the transverse ribs in a special pattern which provides extra grip in all directions. These teeth ensure added safety when oil, grease, water, sap, mud, etc may make the grating slippery. Tests with a number of shoe sole materials have shown that INTERLOK™ II Anti-skid provides excellent grip in most hazardous conditions.

INTERLOK™ II Stair Treads offer all the advantages of INTERLOK™ II grating including quick and easy installation. For product information and dimensions, please view our page Use LYSAGHT INTERLOK™ II for Stair Treads.

INTERLOK™ II Ramps. LYSAGHT INTERLOK™ II is suitable for use on sloped walkways or ramps constructed in accordance with AS 1657. Ramps up to 7° slope may be decked with INTERLOK™ II Regular. INTERLOK™ II Anti-skid may be used where cleated ramps are normally required, ie up to 20° slope. However, to ensure adequate grip across full width of such ramps, the grating must be laid transverse to the direction of travel.

Physical Properties

	t	Mass Unit Area		A1		A2	B1		B2
	mm	kg/m	kg/m2	mm
G06512	1.2	3.8	16.9	63	65			15	20
G06520	2.0	6.3	27.8	64	66			16	21

Tolerances

The following tolerances apply to LYSAGHT INTERLOK® II sections:

Depth: ±1 mm
Width: +0-2 mm
Length:
(Less than 3m): +4-0 mm
(Over 3m): +0-6 mm

Specification

LYSAGHT INTERLOK® II is made from ZINCFORM® steel conforming to AS 1397: Zinc-coated and Aluminium/Zinc-coated Steel Sheet, grade G300-Z450 (300 MPa minimum yield stress).

Note:
All accessories have a coating mass of Z275. Where used in extremely aggressive environments, a thicker coating mass should be considered (subject to enquiry).

Capacity & Load Tables

Quick Selection Table for Uniform Load

Kilograms per square metre of floor. Working load based on deflection of span/360
Span (mm)	G06512 (kg/m2)	G06520 (kg/m2)
600 700 800 900 1000 1100 1200 1300 1400* 1500 1600 1700* 1800 1900 2000 2200 2400 2600 2800 3000 3200 3400 3600 3800 4000	3540 2849 2324 1923 1614 1317 1095 924 790* 684 573 486 417 360 314 235 181 143 115 93 76 64 54 46 39	5459 4430 3626 3013 2535 2070 1721 1453 1244 1073 896 755* 642 552 477 366 287 230 187 155 127 107 90 76 66

* e.g. If the load requirement for a floor is 750 kg/m², then G06512 over 1400mm or G06520 over 1700mm span may be used.

Allowable Loads:

The allowable load tables provide the safe working load, the deflection produced by the load and the load which will produce a deflection of span/360 for uniformly distributed, concentrated line and point loads.

A line load must extend across the full width of the section so that it is applied to both legs.

A point load is assumed to be applied at the mid point of a single rib. If the load is applied over more than one rib, the allowable load may be increased by the number of ribs until the limits of the concentrated line load is reached.

Deflection limits of span/360 are suitable for most INTERLOK™ II applications. At the discretion of the designer, other loads and deflections up to the safe working load may be obtained by proportion.

Irrespective of the design loads involved, INTERLOK™ II grating subject to heavy and continuous foot traffic, such as stairways, should be 2.0mm thick.

AS 1657 requires that the grating adequately carry the more severe of 2.5 kPa uniformly distributed, or 1 kN concentrated load. With deflection limited to span/360, maximum recommended spans are:

G06512 1900mm
G06520 2400mm

G06512

Span (mm)
	Uniform load			Line load			Point load
	WS	Defln	WD	WS	Defln	WD	WS	Defln	WD
	kPa	mm	kPa	kN	mm	kN	kN	mm	kN
600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2200 2400 2600 2800 3000 3200 3400 3600 3800 4000	78.57 59.96 47.00 38.24 31.88 26.06 21.65 18.24 15.55 13.39 11.73 10.36 9.21 8.24 7.41 6.14 5.17 4.42 3.82 3.33 2.93 2.60 2.31 2.08 1.88	3.60 4.00 4.40 4.90 5.40 5.90 6.50 7.00 7.50 8.00 8.90 9.90 10.80 11.80 12.90 15.60 18.60 21.90 25.50 29.30 33.30 37.60 42.20 47.00 52.10	36.13 29.07 23.71 19.62 16.47 13.44 11.17 9.43 8.06 6.98 5.85 4.96 4.25 3.67 3.20 2.40 1.85 1.46 1.17 0.95 0.78 0.65 0.55 0.47 0.40	5.28 4.67 4.21 3.86 3.57 3.21 2.91 2.66 2.44 2.25 2.10 1.97 1.86 1.75 1.66 1.51 1.39 1.29 1.20 1.12 1.05 0.99 0.93 0.88 0.84	2.90 3.20 3.50 3.90 4.30 4.70 5.20 5.60 6.00 6.40 7.10 7.90 8.70 9.50 10.30 12.50 14.90 17.50 20.40 23.40 26.70 30.10 33.80 37.60 41.70	3.03 2.85 2.66 2.47 2.31 2.08 1.88 1.72 1.58 1.45 1.31 1.18 1.07 0.98 0.90 0.74 0.62 0.53 0.46 0.40 0.35 0.31 0.28 0.25 0.22	0.82 0.82 0.82 0.82 0.82 0.82 0.82 0.82 0.82 0.82 0.82 0.82 0.82 0.82 0.82 0.77 0.72 0.68 0.65 0.62 0.59 0.56 0.54 0.52 0.50	1.70 1.80 1.90 2.00 2.20 2.20 2.40 2.40 2.40 3.20 3.50 3.80 4.20 4.60 5.10 6.40 7.70 9.20 11.10 12.90 15.00 17.00 19.60 22.20 24.80	- - - - - - - - - - - - - - - 0.74 0.62 0.53 0.46 0.40 0.35 0.31 0.28 0.25 0.22

G06520

Span (mm)
	Uniform load			Line load			Point load
	WS	Defln	WD	WS	Defln	WD	WS	Defln	WD
	kPa	mm	kPa	kN	mm	kN	kN	mm	kN
600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2200 2400 2600 2800 3000 3200 3400 3600 3800 4000	141.22 108.11 86.10 70.67 59.37 48.44 40.18 33.79 28.74 24.70 21.65 19.13 17.01 15.23 13.71 10.97 8.91 7.33 6.10 5.12 4.26 3.55 2.98 2.50 2.10	4.20 4.70 5.20 5.80 6.40 7.00 7.60 8.20 8.80 9.40 10.50 11.70 13.00 14.30 15.60 18.00 20.30 22.60 24.80 27.00 29.00 30.90 32.50 33.90 34.90	55.7 45.2 37.0 30.74 25.87 21.12 17.56 14.83 12.69 10.98 9.14 7.70 6.55 5.63 4.87 3.73 2.93 2.35 1.91 1.58 1.30 1.09 0.92 0.78 0.67	9.49 8.48 7.71 7.12 6.65 5.97 5.40 4.92 4.51 4.15 3.88 3.64 3.43 3.24 3.07 2.70 2.40 2.14 1.91 1.72 1.53 1.35 1.20 1.06 0.94	3.40 3.70 4.10 4.60 5.10 5.60 6.10 6.60 7.10 7.50 8.40 9.40 10.40 11.40 12.50 14.40 16.20 18.10 19.90 21.60 23.20 24.70 26.00 27.10 28.00	4.68 4.43 4.12 3.87 3.62 3.25 2.95 2.70 2.49 2.31 2.05 1.83 1.65 1.50 1.36 1.15 0.98 0.85 0.75 0.66 0.58 0.52 0.46 0.41 0.37	1.68 1.68 1.68 1.68 1.68 1.68 1.68 1.68 1.68 1.68 1.68 1.68 1.68 1.68 1.68 1.60 1.50 1.42 1.34 1.28 1.19 1.13 1.06 1.00 0.94	2.10 2.30 2.50 2.70 3.00 3.30 3.50 3.90 4.20 4.60 5.00 5.50 5.90 6.50 7.10 8.50 10.10 12.00 14.00 16.10 18.00 20.10 23.00 25.60 28.00	- - - - - - 1.60 1.56 1.56 1.52 1.49 1.44 1.42 1.36 1.31 1.15 0.98 0.85 0.75 0.66 0.58 0.52 0.46 0.41 0.37

Notes:	1.	Allowable loads were determined by tests
	2.	WS = safe working load Defln = Deflection produced by WS WD = Working load based on deflection of span/360
	3.	Span is measured from the centre of the supports. Minimum recommended support width is 50mm
	4.	For intermediate value of spans the loads and deflections may be obtained by linear interpretations

Size Availability

Stock length is 6 metres (6073mm). However, custom-cut lengths from 0.5m to 12m are available on order, with lead times subject to production schedules.

As LYSAGHT INTERLOK™ II is cut at every fourth rib, actually lengths must be multiples of 152.8mm.

The minimum custom-cut length is 5309mm and maximum is 12033mm (see table).

Lengths required less than 5309mm can be supplied on a cut back basis and will incur a cutting charge per length. Cut back lengths are in slot spacing increments of 38.2mm.

5309	6685	8060	9435	10810
5462	6837	8213	9588	10963
5615	6990	8265	9741	11116
5768	7143	8518	9893	11269
5921	7296	8671	10046	11421
6073	7449	8824	10199	11574
6226	7601	8977	10352	11727
6379	7754	9129	10505	11880
6532	7907	9282	10657	12033

Note: Length highlighted in bold is stock length.

LYSAGHT INTERLOK™ II is available through BlueScope Lysaght distributors who can be located using our Supplier Locator for Meshes & Walkways

FAQs