Heavy Duty Pultruded Grating – HD 10-40 – HD Bearing Bar

1" Thick | 40% Open

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Heavy Duty Pultruded Grating – HD 10-40 – HD Bearing Bar

NOTE: These products are only available by special order. Minimum orders, extended lead times and special-order pricing will apply.

Span (inches)	CONCENTRATED LOAD in lb/ft of width								Max Load (lb/ft)	Apparent EI x 10⁶ (lb-in²)
Span (inches)	50	100	150	200	250	500	1000	2000	Max Load (lb/ft)	Apparent EI x 10⁶ (lb-in²)
12	0.002	0.003	0.005	0.007	0.008	0.017	0.034	0.068	11275	1.06
18	0.003	0.007	0.010	0.013	0.016	0.033	0.065	0.130	7517	1.87
24	0.006	0.012	0.018	0.024	0.030	0.059	0.118	0.236	5637	2.44
30	0.010	0.020	0.030	0.040	0.050	0.101	0.201	0.403	4510	2.79
36	0.016	0.033	0.049	0.065	0.081	0.163	0.326	0.652	3758	2.98
42	0.025	0.050	0.075	0.100	0.125	0.249	0.498		3221	3.10
48	0.037	0.073	0.110	0.146	0.183	0.366			2819	3.15
54	0.052	0.103	0.155	0.206	0.258	0.516			2506	3.18
60	0.070	0.141	0.211	0.281	0.352				2255	3.20

Span (inches)	UNIFORM LOAD in lb/ft²								Max Load (lb/ft²)	Apparent EI x 10⁶ (lb-in²)
Span (inches)	50	100	150	200	250	500	1000	2000	Max Load (lb/ft²)	Apparent EI x 10⁶ (lb-in²)
12	0.001	0.002	0.003	0.004	0.005	0.011	0.021	0.042	9020	1.06
18	0.003	0.006	0.009	0.012	0.015	0.030	0.061	0.122	6013	1.87
24	0.007	0.015	0.022	0.030	0.037	0.074	0.148	0.295	4510	2.44
30	0.016	0.031	0.047	0.063	0.079	0.157	0.315	0.629	3608	2.79
36	0.031	0.061	0.092	0.122	0.153	0.306	0.611		2506	2.98
42	0.054	0.109	0.163	0.218	0.272	0.545			1841	3.10
48	0.091	0.183	0.274	0.366	0.457				1409	3.15
54	0.145	0.290	0.435	0.580					1114	3.18
60	0.220	0.439	0.659						902	3.20

Properties Per Foot of Width	# of Bars	Load Bar Depth	Bar Centers	Weight/sq ft
A = 7.20 in² I = 0.60 in⁴ S = 1.20 in³	12	1″	1″	5.84

1. Tables were developed in accordance with the test method developed by the Fiberglass Grating Manufacturers Council (FGMC) of the American Composites Manufacturers Association (ACMA) for the Fiberglass Grating Standard.

2. The designer should not exceed MAXIMUM RECOMMENDED load at any time. ULTIMATE CAPACITY represents MAX LOAD observed at initial fracture.

3. Walking loads for maintenance traffic are typically a live load of 50 PSF. Deflections for worker comfort are typically limited to 0.375″ (3⁄8″) or SPAN divided by 120 under full live load. For a firmer feel under full live load or a line load 250 lb/ft of width, limit deflections to 0.25″ (1/4″) or SPAN divided by 200.

4. The loads represented are for STATIC LOAD CONDITIONS at ambient temperature. Deflections for impact loads or dynamic loads will MULTIPLY the deflections shown by 2. Long term loads will result in added deflection due to creep in the material and will require higher factors of safety to ensure acceptable performance.

5. Deflections are limited to 0.5″ (1/2″) as recommended by the Fiberglass Grating Manufacturers Council of the American Composites Manufacturers Association.