Heavy Duty Pultruded Grating – HD 25-60 – HD Bearing Bar

2 1/2" Thick | 60% Open

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Heavy Duty Pultruded Grating – HD 25-60 – 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	0.001	0.001	0.002	0.003	0.007	0.014	41850	5.21
18	<0.001	0.001	0.002	0.002	0.003	0.006	0.012	0.025	27900	9.85
24	<0.001	0.002	0.003	0.004	0.005	0.010	0.020	0.040	20925	14.50
30	0.001	0.003	0.004	0.006	0.007	0.014	0.029	0.058	14740	19.50
36	0.002	0.004	0.006	0.008	0.010	0.021	0.042	0.084	13950	23.25
42	0.003	0.006	0.009	0.012	0.015	0.030	0.061	0.121	11957	25.50
48	0.004	0.009	0.013	0.017	0.022	0.043	0.087	0.174	10463	26.50
54	0.006	0.012	0.018	0.024	0.030	0.060	0.120	0.240	9300	27.30
60	0.008	0.016	0.025	0.033	0.041	0.082	0.164	0.327	8370	27.50
66	0.011	0.022	0.032	0.043	0.054	0.108	0.216	0.432	7609	27.70
72	0.014	0.028	0.042	0.056	0.070	0.139	0.279	0.557	6975	27.90
78	0.018	0.035	0.053	0.070	0.088	0.176	0.352		6438	28.10
84	0.022	0.044	0.065	0.087	0.109	0.218	0.436		5979	28.30
90	0.027	0.053	0.080	0.107	0.133	0.266	0.533		5580	28.50
96	0.032	0.064	0.096	0.128	0.161	0.321	0.642		5231	28.70
102	0.038	0.077	0.115	0.153	0.191	0.383			4924	28.90

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	0.004	0.009	21428	5.21
18	<0.001	0.001	0.002	0.002	0.003	0.006	0.012	0.023	14285	9.85
24	0.001	0.002	0.004	0.005	0.006	0.012	0.025	0.050	10714	14.50
30	0.002	0.005	0.007	0.009	0.011	0.023	0.045	0.090	8571	19.50
36	0.004	0.008	0.012	0.016	0.020	0.039	0.078	0.157	5952	23.25
42	0.007	0.013	0.020	0.026	0.033	0.066	0.132	0.265	4373	25.50
48	0.011	0.022	0.033	0.043	0.054	0.109	0.217	0.435	3348	26.50
54	0.017	0.034	0.051	0.068	0.084	0.169	0.338	0.676	2646	27.30
60	0.026	0.051	0.077	0.102	0.128	0.256	0.511		2143	27.50
66	0.037	0.074	0.111	0.149	0.186	0.372			1771	27.70
72	0.052	0.105	0.157	0.209	0.261	0.523			1488	27.90
78	0.071	0.143	0.214	0.286	0.357				1268	28.10
84	0.095	0.191	0.286	0.382	0.477				1093	28.30
90	0.125	0.250	0.375	0.500	0.624				952	28.50
96	0.161	0.321	0.482	0.642					837	28.70
102	0.203	0.406	0.610						741	28.90

Properties Per Foot of Width	# of Bars	Load Bar Depth	Bar Centers	Weight/sq ft
A = 12.0 in² I = 6.25 in⁴ S = 5.00 in³	8	2.5″	1.5″	9.81

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.