Heavy Duty Pultruded Grating – HD 15-60 – HD Bearing Bar PROGrate Pultruded Grating

1 1/2" 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

0.002

0.002

0.003

0.004

0.008

0.015

0.030

17720

2.40

18

0.001

0.002

0.003

0.004

0.006

0.011

0.022

0.044

11813

5.50

24

0.002

0.004

0.006

0.008

0.010

0.021

0.042

0.083

8860

6.90

30

0.004

0.008

0.012

0.015

0.019

0.039

0.077

0.154

7088

7.30

36

0.006

0.013

0.019

0.026

0.032

0.064

0.129

0.257

5907

7.55

42

0.010

0.020

0.030

0.040

0.050

0.100

0.200

0.401

5063

7.70

48

0.015

0.029

0.044

0.058

0.073

0.146

0.292

0.583

4430

7.90

54

0.020

0.041

0.061

0.082

0.102

0.205

0.410

3938

8.01

60

0.028

0.055

0.083

0.111

0.138

0.277

0.554

3544

8.13

66

0.037

0.073

0.110

0.147

0.183

0.367

3222

8.16

72

0.048

0.095

0.143

0.190

0.238

0.475

2953

8.18

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

0.002

0.002

0.005

0.009

0.019

18763

2.40

18

0.001

0.002

0.003

0.004

0.005

0.010

0.021

0.041

12509

5.50

24

0.003

0.005

0.008

0.010

0.013

0.026

0.052

0.104

9382

6.90

30

0.006

0.012

0.018

0.024

0.030

0.060

0.120

0.241

7505

7.30

36

0.012

0.024

0.036

0.048

0.060

0.121

0.241

0.483

5212

7.55

42

0.022

0.044

0.066

0.088

0.110

0.219

0.438

3829

7.70

48

0.036

0.073

0.109

0.146

0.182

0.365

2932

7.90

54

0.058

0.115

0.173

0.230

0.288

0.576

2317

8.01

60

0.087

0.173

0.260

0.346

0.433

1878

8.13

66

0.126

0.252

0.378

0.504

0.631

1551

8.16

72

0.178

0.356

0.535

0.713

1303

8.18

Properties Per Foot of Width

# of Bars

Load Bar Depth

Bar Centers

Weight/sq ft

A = 7.20 in2 I = 1.36 in4 S = 1.81 in3

8

1.5″

1.5″

6.25

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.