Heavy Duty Pultruded Grating – HD 15-50 – HD Bearing Bar

1 1/2" Thick | 50% Open

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Heavy Duty Pultruded Grating – HD 15-50 – 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	<0.001	0.001	0.002	0.002	0.003	0.006	0.011	0.022	21776	3.27
18	<0.001	0.002	0.003	0.003	0.004	0.009	0.017	0.035	14517	6.94
24	0.002	0.003	0.005	0.007	0.008	0.017	0.033	0.066	10888	8.71
30	0.003	0.006	0.009	0.012	0.015	0.031	0.061	0.122	8710	9.22
36	0.005	0.010	0.015	0.020	0.025	0.051	0.102	0.204	7259	9.53
42	0.008	0.016	0.024	0.032	0.040	0.079	0.159	0.318	6222	9.72
48	0.012	0.023	0.035	0.046	0.058	0.116	0.231	0.462	5444	9.97
54	0.016	0.032	0.049	0.065	0.081	0.162	0.325	0.649	4839	10.11
60	0.022	0.044	0.066	0.088	0.110	0.219	0.439		4355	10.26
66	0.029	0.058	0.087	0.116	0.145	0.291	0.581		3959	10.30
72	0.038	0.075	0.113	0.151	0.188	0.376			3629	10.33

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	<0.001	0.001	0.001	0.002	0.003	0.007	0.014	23452	3.27
18	<0.001	0.002	0.002	0.003	0.004	0.008	0.016	0.033	15635	6.94
24	0.002	0.004	0.006	0.008	0.010	0.021	0.041	0.083	11726	8.71
30	0.005	0.010	0.014	0.019	0.024	0.048	0.095	0.191	9381	9.22
36	0.010	0.019	0.029	0.038	0.048	0.096	0.191	0.382	6514	9.53
42	0.017	0.035	0.052	0.069	0.087	0.174	0.347	0.695	4786	9.72
48	0.029	0.058	0.087	0.115	0.144	0.289	0.577		3664	9.97
54	0.046	0.091	0.137	0.183	0.228	0.456			2895	10.11
60	0.069	0.137	0.206	0.274	0.343	0.685			2345	10.26
66	0.100	0.200	0.300	0.400	0.499				1938	10.30
72	0.141	0.282	0.424	0.565					1629	10.33

Properties Per Foot of Width	# of Bars	Load Bar Depth	Bar Centers	Weight/sq ft
A = 9.00 in² I = 1.60 in⁴ S = 2.25 in³	10	1.5″	1.2″	7.69

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.