Forgeweld Carbon Steel Grating

Around the world … whether the United States, Europe, or the Far East …, the definitive international grating stadard.  Jig assembly and automatic resistance welding (forgewelding) creates structurally rigid grating, with load bearing bars and transverse bars fused under pressure.  There’s no need for the manual assembly, punching, threading and swaging previously used for South African grating.

GRATING WORLD now brings you FORGEWELD™ GW40™ resistance heated and fused CARBON STEEL GRATING with special 6mm and 8mm twisted transverse bars for improved skid resistance.  Serrated edge load bearing bars may be specified for especially slippery conditions.
With a doubt, FORGEWELD™ GW40™ CARBON STEEL GRATING offers the most economical solution for most environments.

Still not sure?  Ask us for a head-on physical demonstration of the two grating types.

Standard panels are :

1000mm x 2500mm                              1250mm x 2500mm
1000mm x 3000mm                              1250mm x 3000mm
1000mm x 5000mm                              1250mm x 5000mm
1000mm x 6000mm                              1250mm x 5000mm

Special sizes and customising are available on request.

Finishes include mill (standard), coated (painted or powder coated), bitumenised, and galvanised.

FORGEWELD® GW40® UNSERRATED CARBON STEEL GRATING

LOAD/SPAN TABLES

SIZE CODE	APPROX MASS m2 UNBANDED UNGALVANISED	LOAD   C  = kg/m U  = kg/m2	BEARER BAR SPAN (mm)										LOAD CAT kN/m2	MAX SPAN  (mm) FOR  LOAD CATEGORY
			600	750	900	1000	1250	1500	1750	2000	2250	2500
			DEFLECTION  (mm)
			3	3.75	4.5	5	6.25	7.5	8.75	10	10	10
25/3/40/50   25/3/40/100	20.4   17.5	C U	1276   3401	816   1741	566   1008	459   735	294   376	204   217					3 5 7.5	1350 1140 1000
30/3/40/50   30/3/40/100	23.3   20.6	C U	2206   5884	1412   3012	981   1743	794   1271	508   650	353   376	259   237				3 5 7.5	1620 1570 1200
35/3/40/50   35/3/40/100	27   24.2	C U	3502   9338	2241   4781	1556   2767	1261   2017	807   1032	560   597	412   376	315   252			3 5 7.5	1900 1600 1400
40/3/40/50   40/3/40/100	29.2   26.4	C U	5229   13944	3346   7139	2324   4132	1882   3012	1205   1524	837   892	615   562	471   376	330   235		3 5 7.5	2170 1830 1160
25/4.5/40/50   25/4.5/40/100	27.9   25.3	C U	1914   5101	1225   2611	850   1512	689   1102	441   564	306   325	225   205				3 5 7.5	1550 1310 1140
30/4.5/40/50   30/4.5/40/100	32.2   29.7	C U	3310   8826	2118   4518	1471   2614	1191   1906	763   975	529   564	389   355	302   238			3 5 7.5	1860 1800 1370
35/4.5/40/50   35/4.5/40/100	41.5   38.9	C U	5253   14007	3362   7172	2335   4150	1891   3026	1210   1548	840   895	617   564	473   378	249   236		3 5 7.5	2170 1830 1600
40/4.5/40/50   40/4.5/40/100	46.1   43.5	C U	7843   20916	5020   10708	3486   6198	2823   4518	1807   2313	1255   1338	922   843	706   564	495   350	360   231	3 5 7.5	2480 2090 1830
50/4.5/40/50   50/4.5/40/100	53.5   48.5	C U	15318   40851	9804   20914	6808   11910	5513   8824	3529   4517	2451   2613	1800   1646	1378   1101	966   683	703   451	3 5 7.5	3820 3220 2810

NB: Deeper bearer bars available

Suggested Range

IMPORTANT NOTES

1. U, kg/m2, maximum allowable unfactored uniformly distributed loading for that stated span
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, 200×109 Pa
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
7. Galvanising will increase stated mass per square metre by approximately 8 – 10%
8. Banding will increase mass by approximately 6% depending on grating configuration

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