Heavy Duty Pultruded Grating – HD 15-50 – HD Bearing Bar PROGrate Pultruded Grating

1 1/2" 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

0.001

0.002

0.002

0.003

0.006

0.011

0.022

21776

3.27

18

<0.001

0.002

0.003

0.003

0.004

0.009

0.017

0.035

14517

6.94

24

0.002

0.003

0.005

0.007

0.008

0.017

0.033

0.066

10888

8.71

30

0.003

0.006

0.009

0.012

0.015

0.031

0.061

0.122

8710

9.22

36

0.005

0.010

0.015

0.020

0.025

0.051

0.102

0.204

7259

9.53

42

0.008

0.016

0.024

0.032

0.040

0.079

0.159

0.318

6222

9.72

48

0.012

0.023

0.035

0.046

0.058

0.116

0.231

0.462

5444

9.97

54

0.016

0.032

0.049

0.065

0.081

0.162

0.325

0.649

4839

10.11

60

0.022

0.044

0.066

0.088

0.110

0.219

0.439

4355

10.26

66

0.029

0.058

0.087

0.116

0.145

0.291

0.581

3959

10.30

72

0.038

0.075

0.113

0.151

0.188

0.376

3629

10.33

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

<0.001

0.001

0.001

0.002

0.003

0.007

0.014

23452

3.27

18

<0.001

0.002

0.002

0.003

0.004

0.008

0.016

0.033

15635

6.94

24

0.002

0.004

0.006

0.008

0.010

0.021

0.041

0.083

11726

8.71

30

0.005

0.010

0.014

0.019

0.024

0.048

0.095

0.191

9381

9.22

36

0.010

0.019

0.029

0.038

0.048

0.096

0.191

0.382

6514

9.53

42

0.017

0.035

0.052

0.069

0.087

0.174

0.347

0.695

4786

9.72

48

0.029

0.058

0.087

0.115

0.144

0.289

0.577

3664

9.97

54

0.046

0.091

0.137

0.183

0.228

0.456

2895

10.11

60

0.069

0.137

0.206

0.274

0.343

0.685

2345

10.26

66

0.100

0.200

0.300

0.400

0.499

1938

10.30

72

0.141

0.282

0.424

0.565

1629

10.33

Properties Per Foot of Width

# of Bars

Load Bar Depth

Bar Centers

Weight/sq ft

A = 9.00 in2 I = 1.60 in4 S = 2.25 in3

10

1.5″

1.2″

7.69

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