1 1/2" X 1 1/2" X 6" Rectangular Grid

1 1/2" Thick | 55% Open

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1 1/2" X 1 1/2" X 6" Rectangular Grid

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	0.003	0.004	0.005	0.006	0.013	0.026	0.051	3601	1.40
18	0.003	0.007	0.010	0.014	0.017	0.035	0.069	0.139	2401	1.75
24	0.007	0.014	0.022	0.029	0.036	0.072	0.144		1800	2.00
30	0.013	0.025	0.038	0.050	0.063	0.126	0.251		1440	2.24
36	0.021	0.042	0.062	0.083	0.104	0.208	0.415		1200	2.34
42	0.032	0.065	0.097	0.130	0.162	0.324	0.649		1029	2.38
48	0.048	0.095	0.143	0.190	0.238	0.476			900	2.42
54	0.067	0.134	0.202	0.269	0.336	0.672			800	2.44
60	0.091	0.183	0.274	0.366	0.457				720	2.46

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	0.002	0.002	0.003	0.004	0.008	0.016	0.032	7202	1.40
18	0.003	0.007	0.010	0.013	0.016	0.033	0.065	0.130	3201	1.75
24	0.009	0.018	0.027	0.036	0.045	0.090	0.180		1800	2.00
30	0.020	0.039	0.059	0.078	0.098	0.196	0.392		1152	2.24
36	0.039	0.078	0.117	0.156	0.195	0.389			800	2.34
42	0.071	0.142	0.213	0.284	0.355				588	2.38
48	0.119	0.238	0.357	0.476	0.595				450	2.42
54	0.189	0.378	0.567						356	2.44
60	0.286	0.572							288	2.46

Properties Per Foot of Width	# of Bars	Load Bar Width	Bar Centers	Weight/sq ft
A = 4.39 in² I = 0.88 in⁴S_T = 1.30 in³ S_B = 1.06 in³	8	0.6″	1.5″	4.42

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. MAXIMUM LOAD represents a 4:1 factor of safety on ULTIMATE CAPACITY. 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.