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Series 1

SERIES 1 grating conforms to the S.A.A. Code for Fixed Platforms, Walkways, Stairway and Ladders; it is the product most specified and used throughout all sections of industry. This type of grating with its 30mm load bar centres has the greatest resistance to surface impact of the whole WEBGRATE range. It is used extensively in Power Stations, Refineries, Sewerage Treatment Plants, Grain Silos, Chemical Plants and as trafficable drain grates and stair treads. In its serrated form SERIES 1 grating is used in wet, greasy areas especially by the oil industry on offshore production platforms.

SA Series 1	SB Series 1



STANDARD END BANDING WELD-EVERY 5TH LOAD BAR	STANDARD END BANDING WELD-EVERY 5TH LOAD BAR

Note:Spans to the left of the heavy line have a deflection of less than 5 mm for a 4 kPa uniformly distributed load, which is a limiting deflection for pedestrian comfort.

Nominal^o/A Dimension of Bars(in mm)

NO.of Bars	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
5mm Load Bars	95	125	155	185	215	245	275	305	335	365	395	425	455	485	515	545	575	605	635	665
NO.of Bars	24	25	26	27	28	29	30	31	32	33	34
5mm Load Bars	695	725	755	785	815	845	875	905	935	965	995

NOTE:
1、For 3mm load bars subtract 2mm from widths.
2、width dimensions can vary due to manufacturing process

Serrated conversion factors

Load Bar	20×3	20×5	25×3	25×4.5	25×5	32×3	32×4.5	32×5	35×4.5	35×5	35×5	38×5	40×3	40×5	50×5	65×5
Load	Not recommended		0.79	0.79	0.79	0.83	0.83	0.83	0.85	0.85	0.86	0.87	0.87	0.88	0.89	0.92
Deflection	Not recommended		1.12	1.12	1.12	1.09	1.09	1.09	1.08	1.08	1.07	1.07	1.07	1.07	1.06	1.04

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