1" X 3/4" X 3/4" Square Grid

1" Thick | 44% Open

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1" X 3/4" X 3/4" Square Grid

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Product	Description	Part Number	Resin	Color	Length	Location	Pieces

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	0.003	0.006	0.012	0.031	0.045	0.059	0.089	0.120	1239	0.599
18	0.012	0.024	0.049	0.125	0.188	0.254	0.389		826	0.486
24	0.029	0.057	0.116	0.295	0.456	0.580			620	0.494
30	0.059	0.116	0.233	0.605					496	0.478
36	0.088	0.175	0.360						413	0.549
42	0.171	0.346							354	0.448
48	0.262	0.524							310	0.439
54	0.345	0.685							275	0.447

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	0.002	0.005	0.007	0.009	0.011	0.023	0.046	0.091	2480	0.599
18	0.011	0.021	0.032	0.043	0.053	0.106	0.213	0.425	1425	0.486
24	0.033	0.066	0.098	0.131	0.164	0.328			825	0.494
30	0.077	0.154	0.230	0.307	0.384				536	0.478
36	0.168	0.336	0.504						310	0.549
42	0.323	0.645							250	0.448
48	0.537									0.439

Properties Per Foot of Width	# of Bars	Load Bar Width	Bar Centers	Weight/sq ft
A = 2.47 in² I = 0.16 in⁴ S = 0.34 in³	8	0.25″	0.75″	4.06

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.