Heavy Duty Pultruded Grating – HD 15-40 – HD Bearing Bar PROGrate Pultruded GratingWheelchair Accessible

1 1/2" Thick | 40% 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

0.001

0.001

0.002

0.003

0.007

0.013

25696

5.40

18

<0.001

0.001

0.002

0.003

0.003

0.007

0.014

0.027

17130

8.84

24

0.001

0.003

0.004

0.005

0.007

0.014

0.027

0.055

12848

10.56

30

0.003

0.005

0.008

0.010

0.013

0.025

0.050

0.101

10278

11.17

36

0.004

0.008

0.013

0.017

0.021

0.042

0.084

0.168

8565

11.55

42

0.007

0.013

0.020

0.026

0.033

0.066

0.131

0.262

7342

11.78

48

0.010

0.019

0.029

0.038

0.048

0.095

0.191

0.381

6424

12.09

54

0.013

0.027

0.040

0.054

0.067

0.134

0.268

0.536

5710

12.25

60

0.018

0.036

0.054

0.072

0.090

0.181

0.362

5139

12.43

66

0.024

0.048

0.072

0.096

0.120

0.240

0.480

4672

12.49

72

0.031

0.062

0.093

0.124

0.155

0.311

0.621

4283

12.52

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

0.004

0.008

29744

5.40

18

<0.001

0.001

0.002

0.003

0.003

0.006

0.013

0.026

19830

8.84

24

0.002

0.003

0.005

0.007

0.009

0.017

0.034

0.068

14872

10.56

30

0.004

0.008

0.012

0.016

0.020

0.039

0.079

0.157

11898

11.17

36

0.008

0.016

0.024

0.032

0.039

0.079

0.158

0.316

8362

11.55

42

0.014

0.029

0.043

0.057

0.072

0.143

0.287

0.573

6070

11.78

48

0.024

0.048

0.071

0.095

0.119

0.238

0.477

4648

12.09

54

0.038

0.075

0.113

0.151

0.188

0.377

3672

12.25

60

0.057

0.113

0.170

0.226

0.283

0.565

2974

12.43

66

0.082

0.165

0.247

0.330

0.412

2458

12.49

72

0.116

0.233

0.349

0.466

0.582

2066

12.52

Properties Per Foot of Width

# of Bars

Load Bar Depth

Bar Centers

Weight/sq ft

A = 10.80 in2 I = 2.03 in4 S = 2.71 in3

12

1.5″

1″

9.13

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.