T 20-33 – T Bearing Bar PROGrate Pultruded GratingWheelchair Accessible

2" Thick | 33% 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

16215

3.60

18

0.001

0.002

0.003

0.004

0.005

0.010

0.020

0.040

10810

6.07

24

0.002

0.004

0.005

0.007

0.009

0.018

0.037

0.073

8108

7.89

30

0.003

0.006

0.009

0.012

0.015

0.030

0.060

0.121

6486

9.32

36

0.005

0.010

0.014

0.019

0.024

0.048

0.096

0.192

5405

10.10

42

0.007

0.015

0.022

0.029

0.036

0.073

0.146

0.291

4633

10.60

48

0.010

0.021

0.031

0.042

0.052

0.104

0.208

0.417

4054

11.06

54

0.015

0.029

0.044

0.058

0.073

0.146

0.291

0.583

3603

11.26

60

0.020

0.040

0.059

0.079

0.099

0.198

0.396

3243

11.36

66

0.026

0.052

0.078

0.105

0.131

0.261

0.523

2948

11.46

72

0.034

0.068

0.101

0.135

0.169

0.338

0.676

2703

11.50

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

0.006

0.012

20269

3.60

18

0.001

0.002

0.003

0.004

0.005

0.009

0.019

0.038

13524

6.07

24

0.002

0.005

0.007

0.009

0.011

0.023

0.046

0.091

7398

7.89

30

0.005

0.009

0.014

0.019

0.024

0.047

0.094

0.189

5437

9.32

36

0.009

0.018

0.027

0.036

0.045

0.090

0.180

0.361

3612

10.10

42

0.016

0.032

0.048

0.064

0.080

0.159

0.319

0.637

2635

10.60

48

0.026

0.052

0.078

0.104

0.130

0.260

0.521

2030

11.06

54

0.041

0.082

0.123

0.164

0.205

0.410

1600

11.26

60

0.062

0.124

0.186

0.248

0.309

0.619

1295

11.36

66

0.090

0.180

0.269

0.359

0.449

1070

11.46

72

0.127

0.254

0.380

0.507

0.634

899

11.50

Properties Per Foot of Width

# of Bars

Load Bar Depth

Bar Centers

Weight/sq ft

A = 4.34 in2 I = 2.11 in4 ST = 2.64 in3 SB = 1.76 in3

8

2″

1.5″

4.44

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