Heavy Duty Pultruded Grating – HD 25-40 – HD Bearing Bar

2 1/2" Thick | 40% Open

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Heavy Duty Pultruded Grating – HD 25-40 – 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	<0.001	<0.001	<0.001	<0.001	0.001	0.002	0.004	0.008	68225	8.68
18	<0.001	<0.001	0.001	0.002	0.002	0.004	0.008	0.016	45483	15.20
24	<0.001	0.001	0.002	0.003	0.003	0.007	0.014	0.027	34113	21.00
30	0.001	0.002	0.003	0.004	0.005	0.010	0.021	0.042	27292	26.80
36	0.002	0.003	0.005	0.006	0.008	0.015	0.030	0.060	22742	32.20
42	0.002	0.004	0.006	0.009	0.011	0.021	0.043	0.086	19493	35.90
48	0.003	0.006	0.009	0.012	0.015	0.030	0.060	0.120	17056	38.40
54	0.004	0.008	0.012	0.016	0.020	0.041	0.081	0.162	15161	40.50
60	0.005	0.011	0.016	0.022	0.027	0.055	0.109	0.218	13645	41.20
66	0.007	0.014	0.021	0.029	0.036	0.071	0.143	0.286	12405	41.90
72	0.009	0.018	0.027	0.037	0.046	0.091	0.183	0.365	11371	42.60
78	0.012	0.023	0.035	0.046	0.058	0.115	0.231	0.461	10496	42.85
84	0.014	0.029	0.043	0.058	0.072	0.144	0.288	0.576	9746	42.90
90	0.018	0.035	0.053	0.071	0.088	0.177	0.353		9097	42.98
96	0.021	0.043	0.064	0.086	0.107	0.214	0.428		8528	43.10
102	0.026	0.051	0.077	0.102	0.128	0.256	0.512		8026	43.20

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	0.001	0.003	0.005	34933	8.56
18	<0.001	<0.001	0.001	0.001	0.002	0.004	0.007	0.015	23288	15.20
24	<0.001	0.002	0.003	0.003	0.004	0.009	0.017	0.034	17466	21.00
30	0.002	0.003	0.005	0.007	0.008	0.016	0.033	0.066	13973	26.80
36	0.003	0.006	0.008	0.011	0.014	0.028	0.057	0.113	9704	32.20
42	0.005	0.009	0.014	0.019	0.024	0.047	0.094	0.188	7129	35.90
48	0.008	0.015	0.023	0.030	0.038	0.075	0.150	0.300	5458	38.40
54	0.011	0.023	0.034	0.046	0.057	0.114	0.228	0.456	4313	40.50
60	0.017	0.034	0.051	0.068	0.085	0.171	0.341	0.683	3493	41.20
66	0.025	0.049	0.074	0.098	0.123	0.246	0.491		2887	41.90
72	0.034	0.068	0.103	0.137	0.171	0.342	0.684		2426	42.60
78	0.047	0.094	0.141	0.187	0.234	0.469			2067	42.85
84	0.063	0.126	0.189	0.252	0.315	0.630			1782	42.90
90	0.083	0.166	0.248	0.331	0.414				1553	42.98
96	0.107	0.214	0.321	0.428	0.535				1365	43.10
102	0.136	0.272	0.408	0.544	0.680				1209	43.20

Properties Per Foot of Width	# of Bars	Load Bar Depth	Bar Centers	Weight/sq ft
A = 18.00 in² I = 9.38 in⁴ S = 7.50 in³	12	2.5″	1″	14.48

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.