1″ X 3/4″ X 3/4″ Square Grid PROGrid Molded GratingWheelchair Accessible

1" Thick | 44% Open
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Product Description Part Number Resin Color Length Location Quantity UOM  

Span (inches)

CONCENTRATED LOAD in lb/ft of width

Max Load
(lb/ft)

Apparent
EI x 106
(lb-in2)

50

100

150

200

250

500

1000

2000

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)

50

100

150

200

250

500

1000

2000

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.