I 30-40-ADA - I Bearing Bar

3" Thick | 40% Open | ADA Compliant

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I 30-40-ADA - I 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	0.001	0.003	0.006	59580	12.45
18	<0.001	<0.001	<0.001	0.001	0.002	0.003	0.006	0.012	39720	19.96
24	<0.001	0.001	0.002	0.002	0.003	0.005	0.011	0.021	29790	26.81
30	<0.001	0.002	0.003	0.003	0.004	0.009	0.017	0.034	23832	32.86
36	0.001	0.003	0.004	0.005	0.006	0.013	0.026	0.051	19860	37.90
42	0.002	0.004	0.006	0.007	0.009	0.018	0.037	0.073	17023	42.09
48	0.003	0.005	0.008	0.010	0.013	0.025	0.051	0.101	14895	45.51
54	0.003	0.007	0.010	0.014	0.017	0.034	0.068	0.136	13240	48.27
60	0.004	0.009	0.013	0.018	0.022	0.045	0.090	0.179	11916	50.22
66	0.006	0.012	0.017	0.023	0.029	0.058	0.116	0.232	10833	51.62
72	0.007	0.015	0.022	0.030	0.037	0.074	0.148	0.296	9930	52.62

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	0.002	0.004	76262	12.45
18	<0.001	<0.001	<0.001	0.001	0.001	0.003	0.006	0.011	33894	19.96
24	<0.001	0.001	0.002	0.003	0.003	0.007	0.013	0.027	19066	26.81
30	0.001	0.003	0.004	0.005	0.007	0.013	0.027	0.053	12202	32.86
36	0.002	0.005	0.007	0.010	0.012	0.024	0.048	0.096	8474	37.9
42	0.004	0.008	0.012	0.016	0.020	0.040	0.080	0.160	6226	42.09
48	0.006	0.013	0.019	0.025	0.032	0.063	0.127	0.253	4766	45.51
54	0.010	0.019	0.029	0.038	0.048	0.096	0.191	0.382	3766	48.27
60	0.014	0.028	0.042	0.056	0.070	0.140	0.280	0.560	3050	50.22
66	0.020	0.040	0.060	0.080	0.100	0.199	0.399		2521	51.62
72	0.028	0.055	0.083	0.111	0.139	0.277	0.554		2118	52.62

Properties Per Foot of Width	# of Bars	Load Bar Depth	Bar Centers	Weight/sq ft
A = 14.44 in² I = 13.76 in⁴ S = 9.18 in³	12	3″	1″	12.28

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 too 0.5″ (1/2″) as recommended by the Fiberglass Grating Manufacturers Council of the American Composites Manufacturers Association.