Heavy Duty Pultruded Grating – HD 20-60 – HD Bearing Bar PROGrate Pultruded Grating

2" Thick | 60% 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

0.005

0.010

0.020

37380

3.56

18

<0.001

0.001

0.002

0.003

0.004

0.007

0.015

0.029

24920

8.30

24

0.001

0.002

0.004

0.005

0.006

0.012

0.023

0.047

18690

12.30

30

0.002

0.004

0.006

0.008

0.010

0.019

0.038

0.077

14952

14.70

36

0.003

0.006

0.009

0.012

0.015

0.030

0.060

0.119

12460

16.30

42

0.005

0.009

0.014

0.018

0.023

0.045

0.090

0.181

10680

17.10

48

0.007

0.013

0.020

0.026

0.033

0.065

0.131

0.262

9345

17.60

54

0.009

0.019

0.028

0.037

0.046

0.093

0.185

0.371

8307

17.70

60

0.013

0.025

0.038

0.051

0.063

0.127

0.253

0.506

7476

17.78

66

0.017

0.033

0.050

0.067

0.084

0.167

0.335

0.670

6796

17.88

72

0.022

0.043

0.065

0.086

0.108

0.216

0.432

6230

18.02

78

0.027

0.055

0.082

0.109

0.137

0.273

0.546

5751

18.10

84

0.034

0.068

0.102

0.136

0.170

0.339

0.678

5340

18.20

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

0.001

0.002

0.005

0.010

19140

4.56

18

<0.001

0.001

0.002

0.003

0.003

0.007

0.014

0.027

12760

8.34

24

0.001

0.003

0.004

0.006

0.007

0.014

0.028

0.057

9570

12.70

30

0.003

0.006

0.009

0.012

0.015

0.030

0.060

0.120

7656

14.70

36

0.006

0.011

0.017

0.022

0.028

0.056

0.112

0.224

5317

16.30

42

0.010

0.020

0.030

0.039

0.049

0.099

0.197

0.395

3906

17.10

48

0.016

0.033

0.049

0.065

0.082

0.164

0.327

0.655

2991

17.60

54

0.026

0.052

0.078

0.104

0.130

0.261

0.521

2363

17.70

60

0.040

0.079

0.119

0.158

0.198

0.395

1914

17.78

66

0.058

0.115

0.173

0.230

0.288

0.576

1582

17.88

72

0.081

0.162

0.243

0.324

0.405

1329

18.02

78

0.111

0.222

0.333

0.444

0.555

1133

18.10

84

0.148

0.297

0.445

0.594

977

18.20

Properties Per Foot of Width

# of Bars

Load Bar Depth

Bar Centers

Weight/sq ft

A = 9.60 in2 I = 3.20 in4 S = 3.20 in3

8

2″

1.5″

8.03

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.