I 30-40-ADA – I Bearing Bar PROGrate Pultruded GratingWheelchair Accessible

3" Thick | 40% Open | ADA Compliant
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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

<0.001

0.001

0.003

0.006

59580

12.45

18

<0.001

<0.001

<0.001

0.001

0.002

0.003

0.006

0.012

39720

19.96

24

<0.001

0.001

0.002

0.002

0.003

0.005

0.011

0.021

29790

26.81

30

<0.001

0.002

0.003

0.003

0.004

0.009

0.017

0.034

23832

32.86

36

0.001

0.003

0.004

0.005

0.006

0.013

0.026

0.051

19860

37.90

42

0.002

0.004

0.006

0.007

0.009

0.018

0.037

0.073

17023

42.09

48

0.003

0.005

0.008

0.010

0.013

0.025

0.051

0.101

14895

45.51

54

0.003

0.007

0.010

0.014

0.017

0.034

0.068

0.136

13240

48.27

60

0.004

0.009

0.013

0.018

0.022

0.045

0.090

0.179

11916

50.22

66

0.006

0.012

0.017

0.023

0.029

0.058

0.116

0.232

10833

51.62

72

0.007

0.015

0.022

0.030

0.037

0.074

0.148

0.296

9930

52.62

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

0.001

0.002

0.004

76262

12.45

18

<0.001

<0.001

<0.001

0.001

0.001

0.003

0.006

0.011

33894

19.96

24

<0.001

0.001

0.002

0.003

0.003

0.007

0.013

0.027

19066

26.81

30

0.001

0.003

0.004

0.005

0.007

0.013

0.027

0.053

12202

32.86

36

0.002

0.005

0.007

0.010

0.012

0.024

0.048

0.096

8474

37.9

42

0.004

0.008

0.012

0.016

0.020

0.040

0.080

0.160

6226

42.09

48

0.006

0.013

0.019

0.025

0.032

0.063

0.127

0.253

4766

45.51

54

0.010

0.019

0.029

0.038

0.048

0.096

0.191

0.382

3766

48.27

60

0.014

0.028

0.042

0.056

0.070

0.140

0.280

0.560

3050

50.22

66

0.020

0.040

0.060

0.080

0.100

0.199

0.399

2521

51.62

72

0.028

0.055

0.083

0.111

0.139

0.277

0.554

2118

52.62

Properties Per Foot of Width

# of Bars

Load Bar Depth

Bar Centers

Weight/sq ft

A = 14.44 in2 I = 13.76 in4 S = 9.18 in3

12

3″

1″

12.28

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.