Grating Brochure_2011
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Grating Locker Group manufactures & supplies a broad range of options for safe access walkways and flooring solutions for the mining, petro-chemical, industrial, manufacturing and commercial sectors. This manual covers a full range of flooring solutions from Gridforge (forge welded steel grating), FRP Grating (fibreglass) and Gridwalk (expanded metal mesh) including the complete technical and design data necessary for the selection of the most appropriate Locker Group grating type and size. Locker Group safe access solutions are suitable for a range of applications, including mezzanine...

Product Selection Guide * Weights and max spans are for standard mild steel products, except for FRP (fibreglass).

GridforgeTM Welded Grating Gridforge grating is a multi purpose grating system suitable for a variety of industrial applications. Gridforge is available in numerous combinations of load bar (flat bar) depth and thickness, load bar pitch and cross rod pitch. Gridforge part numbers use the following coding system for easy identification. Welded Grating Cross Bar Pitch Bar Size 30 (100m) (20x 3) Load Bar Pitch Galv. PL - Plain SR - Serrated Eg. Part No. W30A-203-PL-HDG Part No description W = Welded Grating 30 = Load Bar Pitch A = 100mm Cross Bar Pitch (B = 50mm) 203 = Bar size (20 x3) PL =...

GridforgeTM Welded Grating INFORMATION REQUIRED FROM THE CLIENT Gridforge is available in a number of finishes/treatments: 1. Untreated – bare or black steel 2. Galvanised – Hot dipped galvanised to Australian Standard AS/NZS 4680. Minimum average coating required 610gms/sq metre. Bitumen Dipped – Coated in a bitumastic paint. Mainly used in Gold mines where zinc (galvanised) will react with Gold extraction chemicals such as arsenic. Ordering information - when placing an order for Gridforge grating, the following information is required to ensure smooth and fast delivery. 1. Grating type...

Series 30 Load Table LG Code Bar Size Cross Bar Weight kg/m2 W30 SERIES 100MM CROSS BAR PITCH Recommended maximum spans for pedestrian loading – spans to the left of black line have a deflection of less than 5mm for a 4 kPa (uniformly distributed load) therefore meet the criteria. U = uniformly distributed load in kilopascals Bending Stress Criteria 195MPa C = Concentrated Load in Kilo-Newtons Weight calculated on untreated grating D = deflection at centre in millimetres (mm) The weight of fabricated grating (eg banded and galvanised) will increase the weight per sqm by approximately 12%...

Series 40 Load Table 100 Span (mm) W40 SERIES 100MM CROSS BAR PITCH 3.20 6.75 A - Cross Rod Pitch 100mm 2.70 6.75 W40 SERIES 100MM CROSS BAR PITCH LG Code Bar Size Cross Bar Weight kg/m2 Recommended maximum spans for pedestrian loading – spans to the left of black line have a deflection of less than 5mm for a 4 kPa (uniformly distributed load) therefore meet the criteria. U = uniformly distributed load in kilopascals Bending Stress Criteria 195MPa C = Concentrated Load in Kilo-Newtons Weight calculated on untreated grating D = deflection at centre in millimetres (mm) The weight of...

W60 SERIES 100MM CROSS BAR PITCH Series 60 Load Table LG Code Bar Size Recommended maximum spans for pedestrian loading – spans to the left of black line have a deflection of less than 5mm for a 4 kPa (uniformly distributed load) therefore meet the criteria. U = uniformly distributed load in kilopascals Bending Stress Criteria 195MPa C = Concentrated Load in Kilo-Newtons Weight calculated on untreated grating D = deflection at centre in millimetres (mm) The weight of fabricated grating (eg anded and galvanised) will b increase the weight per sqm by approximately 16% Serrated Bar Conversion...

Stair Treads WIDTH following information is required to ensure smooth and fast delivery. Grating type and size, eg W30A-255 2. Grating top surface, plain or serrated bar 3. Weld in or bolt in connection type (or just specify tread type T1 to T8) 4. Nosing type 5. Number and size of treads 6. Finish; galvanised, bitumen dipped or untreated For example: Stair Tread T6 Bolt in + Abrasive Yellow Nosing W30A-255-275 x 750 Stair Treads – when placing an order for Gridforge stair treads, the STAIR TREAD END PLATE T1 Welded Fixing – no nosing T4 Bolted Fixing – floor plate nosing T7 Welded Fixing –...

Grating Options Locker Safety Mesh – Flattened expanded metal (Part # 1220F) welded to either the topside or underside of grating to reduce the chance of small objects falling through to areas where people will be walking, or working, below. Coding example: W30A-325-PL-HDG-LSM Locker Cleats – 10x10sq bar welded at 300mm centres (nominal) on walkways with an incline of 7° or greater, to minimise the chance of slipping. Coding example: W30A-325-PL-HDG-LC Locker Plate – 5mm floor plate welded to the top of grating for applications where full coverage flooring is required. Coding examples:...

Grating Tolerences WIDTH (W) 6mm 0.8mm c/c Bow exaggerated in drawing to best illustrate SPACING AND ALIGNMENT FOR CROSS BARS Load Bars TRANSVERSE BOW (before fastening to supports) Load Bars OVERALL DIMENSIONS AND SQUARENESS Panel Length LONGITUDINAL BOW FABRICATION WELDING Edge Bars and attachments are welded with a minimum 3mm fillet weld to one side of Every 5th Load Bar on Type 30 Grating Every 4th Load Bar on Type 40 Grating Every 3rd Load Bar on Type 60 Grating Panel Length Fabrication welding edge bars and end plates welded on side of every load bar with a minimum 3mm fillet weld...

FRP Grating What is FRP? Locker Group FRP is a one piece, fully moulded fibre reinforced plastic grating. Primarily used for flooring, access walkways, platforms, screening, battery racks, bridges, sump / trench covers, machine guards and stair treads. Initially designed for caustic or corrosive environments, the product is also a viable alternative to flooring products such as aluminium or stainless steel grating. Locker Group can supply panels as stock sheets (3660x1220 mm) or custom shaped to meet specific project requirements. Benefits • Excellent strength to weight ratio. Its...