Heavy Duty Pultruded Grating – HD 20-60 – HD Bearing Bar

2" Thick | 60% Open

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Heavy Duty Pultruded Grating – HD 20-60 – 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	0.005	0.010	0.020	37380	3.56
18	<0.001	0.001	0.002	0.003	0.004	0.007	0.015	0.029	24920	8.30
24	0.001	0.002	0.004	0.005	0.006	0.012	0.023	0.047	18690	12.30
30	0.002	0.004	0.006	0.008	0.010	0.019	0.038	0.077	14952	14.70
36	0.003	0.006	0.009	0.012	0.015	0.030	0.060	0.119	12460	16.30
42	0.005	0.009	0.014	0.018	0.023	0.045	0.090	0.181	10680	17.10
48	0.007	0.013	0.020	0.026	0.033	0.065	0.131	0.262	9345	17.60
54	0.009	0.019	0.028	0.037	0.046	0.093	0.185	0.371	8307	17.70
60	0.013	0.025	0.038	0.051	0.063	0.127	0.253	0.506	7476	17.78
66	0.017	0.033	0.050	0.067	0.084	0.167	0.335	0.670	6796	17.88
72	0.022	0.043	0.065	0.086	0.108	0.216	0.432		6230	18.02
78	0.027	0.055	0.082	0.109	0.137	0.273	0.546		5751	18.10
84	0.034	0.068	0.102	0.136	0.170	0.339	0.678		5340	18.20

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	<0.001	<0.001	0.001	0.001	0.002	0.005	0.010	19140	4.56
18	<0.001	0.001	0.002	0.003	0.003	0.007	0.014	0.027	12760	8.34
24	0.001	0.003	0.004	0.006	0.007	0.014	0.028	0.057	9570	12.70
30	0.003	0.006	0.009	0.012	0.015	0.030	0.060	0.120	7656	14.70
36	0.006	0.011	0.017	0.022	0.028	0.056	0.112	0.224	5317	16.30
42	0.010	0.020	0.030	0.039	0.049	0.099	0.197	0.395	3906	17.10
48	0.016	0.033	0.049	0.065	0.082	0.164	0.327	0.655	2991	17.60
54	0.026	0.052	0.078	0.104	0.130	0.261	0.521		2363	17.70
60	0.040	0.079	0.119	0.158	0.198	0.395			1914	17.78
66	0.058	0.115	0.173	0.230	0.288	0.576			1582	17.88
72	0.081	0.162	0.243	0.324	0.405				1329	18.02
78	0.111	0.222	0.333	0.444	0.555				1133	18.10
84	0.148	0.297	0.445	0.594					977	18.20

Properties Per Foot of Width	# of Bars	Load Bar Depth	Bar Centers	Weight/sq ft
A = 9.60 in² I = 3.20 in⁴ S = 3.20 in³	8	2″	1.5″	8.03

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.