Gratex

	Steel Grating Standards	Steel Product Standards	Hot Galvanising Standards
USA UK	ANSI/NAAMM (MBG531-88) BS4592-1987	ASTM (A36) BS4360 (43A)	ASTM (A123) BS729

CARBON STEEL          An economical solution in non-aggressive environments
STAINLESS STEEL      For corrosion resistance, low maintenance and strength
FIBREGLASS (FRP)      For lightness, ease of installation and long life

GRATEX® grating is available in a variety of finishes to suit practical and aesthetic needs.
For safety, the anti-slip options are excellent, with metal grating featuring serrated bearer bars and ridged transverse bars and composite grating being available with a silica grit finish.

		kN/m²	kg/m²
LIGHT DUTY	MAINTENANCE PLATFORM	2.5	250
	PEDESTRIAN PLATFORM (2 PERSONS)	3.0	300
MEDIUM DUTY	PEDESTRIAN – CROWDED	4.0	400
	FACTORY, WORKSHOP, TROLLEY PASSAGES	5.0	500
HEAVY DUTY	HEAVY LOADING AREA. BOILER EQUIPMENT PLANT AREA	7.5	750

Important Notes

1. SELECTION CRITERIA

1. Select appropriate grating material depending on service conditions
2. Determine applicable load conditions and impact factors
3. Determine the span of grating support structure
4. Select appropriate GRATEX® from the Load/Span Tables

2. LOADINGS

1. U, kg/m², maximum allowable unfactored uniformly istributed loading for that stated span
2. 2. C, kg/m, maximum allowable unfactored centre line load per metre
3. Load/Span Tables based on elastic deflections of span/200 or 10mm, whichever the lesser when subjected to the specified unfactored load using Young’s modulus, 200×10⁹Pa
4. For serrated grating reduce tabulated allowable loads by 10% and maximum span per load category by 3.5%
5. All table loadings to be taken as nominal and should not be used as guaranteed values
6. Appropriate safety factors must be applied by the designer

3. ALLOWANCES

1. Galvanising will increase stated mass per square metre by approximately 8 – 10%
2. Banding will increase mass by approximately 6% depending on grating configuration.