Heavy Duty Pultruded Grating – HD 15-40 – HD Bearing Bar

1 1/2" Thick | 40% Open

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Heavy Duty Pultruded Grating – HD 15-40 – 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	0.002	0.003	0.007	0.013	25696	5.40
18	<0.001	0.001	0.002	0.003	0.003	0.007	0.014	0.027	17130	8.84
24	0.001	0.003	0.004	0.005	0.007	0.014	0.027	0.055	12848	10.56
30	0.003	0.005	0.008	0.010	0.013	0.025	0.050	0.101	10278	11.17
36	0.004	0.008	0.013	0.017	0.021	0.042	0.084	0.168	8565	11.55
42	0.007	0.013	0.020	0.026	0.033	0.066	0.131	0.262	7342	11.78
48	0.010	0.019	0.029	0.038	0.048	0.095	0.191	0.381	6424	12.09
54	0.013	0.027	0.040	0.054	0.067	0.134	0.268	0.536	5710	12.25
60	0.018	0.036	0.054	0.072	0.090	0.181	0.362		5139	12.43
66	0.024	0.048	0.072	0.096	0.120	0.240	0.480		4672	12.49
72	0.031	0.062	0.093	0.124	0.155	0.311	0.621		4283	12.52

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	0.008	29744	5.40
18	<0.001	0.001	0.002	0.003	0.003	0.006	0.013	0.026	19830	8.84
24	0.002	0.003	0.005	0.007	0.009	0.017	0.034	0.068	14872	10.56
30	0.004	0.008	0.012	0.016	0.020	0.039	0.079	0.157	11898	11.17
36	0.008	0.016	0.024	0.032	0.039	0.079	0.158	0.316	8362	11.55
42	0.014	0.029	0.043	0.057	0.072	0.143	0.287	0.573	6070	11.78
48	0.024	0.048	0.071	0.095	0.119	0.238	0.477		4648	12.09
54	0.038	0.075	0.113	0.151	0.188	0.377			3672	12.25
60	0.057	0.113	0.170	0.226	0.283	0.565			2974	12.43
66	0.082	0.165	0.247	0.330	0.412				2458	12.49
72	0.116	0.233	0.349	0.466	0.582				2066	12.52

Properties Per Foot of Width	# of Bars	Load Bar Depth	Bar Centers	Weight/sq ft
A = 10.80 in² I = 2.03 in⁴ S = 2.71 in³	12	1.5″	1″	9.13

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.