I 10-50 – I Bearing Bar PROGrate Pultruded Grating

1" Thick | 50% Open
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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)

50

100

150

200

250

500

1000

2000

12

0.001

0.003

0.004

0.005

0.007

0.013

0.026

0.053

7185

1.36

18

0.004

0.007

0.011

0.015

0.018

0.037

0.074

0.147

4790

1.65

24

0.008

0.015

0.023

0.031

0.038

0.077

0.153

0.306

3593

1.88

30

0.014

0.028

0.042

0.057

0.071

0.141

0.283

0.565

2874

1.99

36

0.024

0.048

0.073

0.097

0.121

0.242

0.484

2395

2.01

42

0.038

0.076

0.114

0.152

0.190

0.380

2053

2.03

48

0.056

0.112

0.169

0.225

0.281

0.562

1796

2.05

54

0.080

0.159

0.239

0.318

0.398

1597

2.06

60

0.109

0.217

0.326

0.435

0.543

1437

2.07

66

0.144

0.288

0.432

0.576

1307

2.08

72

0.186

0.372

0.558

1198

2.09

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

0.001

0.002

0.002

0.003

0.004

0.008

0.017

0.033

11887

1.36

18

0.003

0.007

0.010

0.014

0.017

0.035

0.069

0.138

6299

1.65

24

0.010

0.019

0.029

0.038

0.048

0.096

0.191

0.383

3621

1.88

30

0.022

0.044

0.066

0.088

0.110

0.221

0.442

2308

1.99

36

0.045

0.091

0.136

0.181

0.227

0.453

1591

2.01

42

0.083

0.166

0.249

0.333

0.416

1175

2.03

48

0.140

0.281

0.421

0.562

898

2.05

54

0.224

0.448

0.672

709

2.06

60

0.340

0.679

638

2.07

Properties Per Foot of Width

# of Bars

Load Bar Depth

Bar Centers

Weight/sq ft

A = 3.05 in2 I = 0.39 in4 S = 0.77 in3

10

1″

1.2″

2.97

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.