I 15-50-ADA – I Bearing Bar PROGrate Pultruded GratingWheelchair Accessible

1 1/2" Thick | 50% Open | ADA Compliant
Request a Quote
Special Order

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

0.006

0.011

0.022

12052

3.26

18

0.001

0.003

0.004

0.006

0.007

0.014

0.028

0.056

8035

4.32

24

0.003

0.006

0.009

0.012

0.015

0.029

0.058

0.116

6026

4.96

30

0.005

0.010

0.016

0.021

0.026

0.052

0.104

0.208

4821

5.42

36

0.009

0.017

0.026

0.035

0.043

0.086

0.173

0.346

4017

5.62

42

0.013

0.027

0.040

0.054

0.067

0.134

0.269

3444

5.74

48

0.020

0.040

0.060

0.079

0.099

0.199

0.397

3013

5.80

54

0.028

0.056

0.085

0.113

0.141

0.282

2678

5.82

60

0.039

0.077

0.116

0.154

0.193

0.385

2410

5.84

66

0.051

0.102

0.153

0.204

0.256

0.511

2191

5.86

72

0.066

0.132

0.198

0.264

0.331

2009

5.88

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

0.000

0.001

0.001

0.001

0.002

0.003

0.007

0.014

15427

3.26

18

0.001

0.003

0.004

0.005

0.007

0.013

0.026

0.053

6856

4.32

24

0.004

0.007

0.011

0.015

0.018

0.036

0.073

0.145

3857

4.96

30

0.008

0.016

0.024

0.032

0.041

0.081

0.162

0.324

2468

5.42

36

0.016

0.032

0.049

0.065

0.081

0.162

0.324

1714

5.62

42

0.029

0.059

0.088

0.118

0.147

0.294

1259

5.74

48

0.050

0.099

0.149

0.199

0.248

964

5.8

54

0.079

0.159

0.238

0.317

0.396

762

5.82

60

0.120

0.241

0.361

0.482

617

5.84

66

0.176

0.351

510

5.86

72

0.248

0.496

429

5.88

Properties Per Foot of Width

# of Bars

Load Bar Depth

Bar Centers

Weight/sq ft

A = 5.15 in2 I = 1.14 in4 S = 1.52 in3

19

1.5″

0.63″

4.64

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.