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WS steel grating & floor plate · Steel bar grating

WS heavy-duty steel grating

WS heavy-duty grating, bars 45×5 to 150×8 mm with 8×8 mm cross bars, for 5–7.5 kPa floors, forklifts, vehicle trenches and heavy equipment.

Estados UnidosAustralia / NZEuropa

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Heavy-duty galvanized grating covering a concrete trench
Close-up of deep bearing bars and frame angle of heavy-duty gratingDetail: deep bearing bars bearing on the cast-in frame angle. Trench with heavy-duty grating covers seen from low angleHeavy-duty covers flush with the finished floor.
  • Bearing bars up to 150 × 8 mm
  • 8 × 8 mm square cross bars at 100 mm
  • Safe loads to over 1000 kPa on short spans
  • 5.0 and 7.5 kPa span tables
  • For forklifts, trucks and heavy equipment

Where heavy-duty grating is used

Heavy-duty grating takes loads that light walkway grating cannot: forklift and truck wheels, pallet traffic, boiler houses, compressor rooms, heavy equipment floors, loading docks and trench crossings. Deeper and thicker bearing bars carry the load, and heavier square cross bars spread wheel loads to neighbouring bars.

For trench and pit systems with frames see WS trench covers and WS drainage pit covers.

Heavy-duty load table

WS heavy-duty grating, cross bars 8 × 8 mm at 100 mm – safe uniform load U (kPa) by clear span (mm)
TypeBar (mm)kg/m²U 600U 1000U 1400U 2000U 2400U 3000C 1000 (kN/m)D 1000 (mm)
WS-G1508/40/100150 × 8284.9283310205202551771135101.15
WS-G1308/40/100130 × 8247.62128766390191133853831.33
WS-G1208/40/100120 × 8229.01813653333163113723261.44
WS-G1008/40/100100 × 8191.7125945323111378502261.73
WS-G908/40/10090 × 8173.110203671879163401831.92
WS-G808/40/10080 × 8154.48052901487250321452.16
WS-G758/40/10075 × 8145.17082551306344281272.31
WS-G756/30/10075 × 6140.17082551306344281272.3
WS-G756/40/10075 × 6110.153119197473321952.3
WS-G706/30/10070 × 6131.16172221135538241112.47
WS-G706/40/10070 × 6103.246216685412818832.46

Wheel loads are not uniform loads – for vehicles and forklifts the panel is checked for the wheel load, tyre contact area and dynamic factor of the project code (AASHTO, AS 3996 / AS 5100, EN 124 or EN 1991).

Design and compliance

  • United States – heavy grating per ANSI/NAAMM MBG 532; road loading AASHTO H-20 / HS-20 or HL-93.
  • Australia – AS 3996 class A to G for covers and grates; AS/NZS 1170.1 for floors.
  • Europe – EN 124 classes A15 to F900 for covers; EN 1991-1-1 for floors.
  • Covers that must conform to a class by test are fabricated to a tested design or load-tested as specified.

Normas y requisitos por mercado

Códigos con los que World Steel diseña, fabrica y documenta este producto, y los principales requisitos geométricos y de carga en cada mercado.

Estados Unidos

  • AASHTOVehicle loading H-20 / HS-20, HL-93
  • ANSI/NAAMM MBG 532Heavy-Duty Metal Bar Grating Manual
  • ACI 318 Ch. 17Anchoring to concrete
  • AWS D1.1Structural welding code – steel
  • ASTM A123Hot-dip galvanized coatings
Road-trafficked covers
AASHTO H-20 / HS-20 or HL-93 commonly specified
Todas las normas de United States →

Australia / NZ

  • AS 3996-2019Access covers and grates
  • AS 5216Fastenings in concrete
  • AS/NZS 1554.1Structural steel welding
  • AS/NZS 4680Hot-dip galvanized coatings
Load class
Class A to G by location (AS 3996-2019)
Todas las normas de Australia & New Zealand →

Europa

  • EN 124Gully tops and manhole tops for vehicular and pedestrian areas
  • EN 1992-4Design of fastenings for use in concrete
  • EN ISO 1461Hot-dip galvanized coatings
Load class
A15, B125, C250, D400, E600 or F900 (EN 124)
Todas las normas de Europe →

Resumen solo orientativo: prevalecen la especificación del proyecto, la edición del código adoptada y la autoridad competente.

Acabados

AcabadoNormas / notas
Hot-dip galvanised (G)ASTM A123 · AS/NZS 4680 · EN ISO 1461
Paint coated (PP)Blast or pickle + paint system to ISO 12944 / AS/NZS 2312.1 / SSPC
DuplexGalvanised + paint for colour or C5 environments

Preguntas frecuentes

When do I need heavy-duty grating?

When the floor carries more than about 5 kPa or any wheel load – forklifts, pallet trucks, cars or trucks – and for boiler, compressor and heavy equipment areas.

What is the heaviest WS grating?

WS-G1508/40/100: 150 × 8 mm bearing bars at 40 mm with 8 × 8 mm cross bars, about 285 kg/m².

Can heavy-duty grating be certified to EN 124 or AS 3996?

Covers can be designed to the class and, where conformity by test is required, fabricated to a tested design or load-tested at an accredited laboratory as specified.

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Proyectos de referencia

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