Heavy Duty Pultruded Grating – HD 15-60 – HD Bearing Bar

1 1/2" Thick | 60% Open

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Heavy Duty Pultruded Grating – HD 15-60 – 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	0.002	0.002	0.003	0.004	0.008	0.015	0.030	17720	2.40
18	0.001	0.002	0.003	0.004	0.006	0.011	0.022	0.044	11813	5.50
24	0.002	0.004	0.006	0.008	0.010	0.021	0.042	0.083	8860	6.90
30	0.004	0.008	0.012	0.015	0.019	0.039	0.077	0.154	7088	7.30
36	0.006	0.013	0.019	0.026	0.032	0.064	0.129	0.257	5907	7.55
42	0.010	0.020	0.030	0.040	0.050	0.100	0.200	0.401	5063	7.70
48	0.015	0.029	0.044	0.058	0.073	0.146	0.292	0.583	4430	7.90
54	0.020	0.041	0.061	0.082	0.102	0.205	0.410		3938	8.01
60	0.028	0.055	0.083	0.111	0.138	0.277	0.554		3544	8.13
66	0.037	0.073	0.110	0.147	0.183	0.367			3222	8.16
72	0.048	0.095	0.143	0.190	0.238	0.475			2953	8.18

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	0.002	0.002	0.005	0.009	0.019	18763	2.40
18	0.001	0.002	0.003	0.004	0.005	0.010	0.021	0.041	12509	5.50
24	0.003	0.005	0.008	0.010	0.013	0.026	0.052	0.104	9382	6.90
30	0.006	0.012	0.018	0.024	0.030	0.060	0.120	0.241	7505	7.30
36	0.012	0.024	0.036	0.048	0.060	0.121	0.241	0.483	5212	7.55
42	0.022	0.044	0.066	0.088	0.110	0.219	0.438		3829	7.70
48	0.036	0.073	0.109	0.146	0.182	0.365			2932	7.90
54	0.058	0.115	0.173	0.230	0.288	0.576			2317	8.01
60	0.087	0.173	0.260	0.346	0.433				1878	8.13
66	0.126	0.252	0.378	0.504	0.631				1551	8.16
72	0.178	0.356	0.535	0.713					1303	8.18

Properties Per Foot of Width	# of Bars	Load Bar Depth	Bar Centers	Weight/sq ft
A = 7.20 in² I = 1.36 in⁴ S = 1.81 in³	8	1.5″	1.5″	6.25

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.