Heavy Duty Pultruded Grating – HD 10-50 – HD 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

0.002

0.004

0.006

0.008

0.010

0.020

0.040

0.080

9318

0.90

18

0.004

0.007

0.011

0.014

0.018

0.036

0.072

0.144

6216

1.69

24

0.007

0.013

0.020

0.026

0.033

0.066

0.132

0.264

4659

2.18

30

0.012

0.023

0.035

0.046

0.058

0.116

0.232

0.465

3727

2.42

36

0.019

0.038

0.057

0.076

0.095

0.190

0.380

3106

2.56

42

0.030

0.059

0.089

0.119

0.148

0.297

0.594

2662

2.60

48

0.044

0.088

0.131

0.175

0.219

0.438

2330

2.63

54

0.062

0.124

0.186

0.248

0.309

0.619

2071

2.65

60

0.084

0.169

0.253

0.337

0.421

1864

2.67

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

0.004

0.005

0.006

0.012

0.025

0.050

7455

0.90

18

0.003

0.007

0.010

0.013

0.017

0.034

0.067

0.135

4970

1.69

24

0.008

0.017

0.025

0.033

0.041

0.083

0.165

0.330

3727

2.18

30

0.018

0.036

0.054

0.073

0.091

0.182

0.363

2982

2.42

36

0.036

0.071

0.107

0.142

0.178

0.356

2071

2.56

42

0.065

0.130

0.195

0.260

0.325

0.649

1521

2.60

48

0.109

0.219

0.328

0.438

0.547

1165

2.63

54

0.174

0.348

0.522

0.696

920

2.65

60

0.263

0.527

745

2.67

Properties Per Foot of Width

# of Bars

Load Bar Depth

Bar Centers

Weight/sq ft

A = 6.00 in2 I = 0.50 in4 S = 1.00 in3

10

1″

1.2″

4.94

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.