Product Information
Bar Grating - Specialty Products
Railroad Grating
Association of American Railroads (AAR) Approved Bar Grating is available meeting AAR Specifications, Rule 53 in the Field Manual of the AAR Interchange Rules.
This bar grating has been designed and engineered to meet AAR specifications for width, clear openings, deflection under load, and non-skid attributes. It is ideal for AAR approved safety walkway applications such as brake steps, crossover and dome platforms, and running boards.
This product meets the requirements for AAR Group Number 1 (unsupported length - 4 feet), Group Number 2 (unsupported length - 7 feet), and Group Number 3 (unsupported length - 10 feet) Steel.
Railroad Grating
| AAR Group Number | Bar Size | Symbol / Approx. Wgt. (lbs/sq ft) | Unsupported Length |
|---|---|---|---|
| 1 | 1” x 1/8” | 25W4 / 3.85# | 4 feet |
| 1 | 1” x 3/16” | 25W4 / 5.67# | 4 feet |
| 1 | 1” x 3/16” | 27W4 / 5.47# | 4 feet |
| 2 | 1-1/2” x 3/16” | 27W4 / 7.88# | 7 feet |
| 3 | 2” x 3/16” | 27W4 / 10.29# | 10 feet |
| No. of Bars |
25W4 1/8 Bar |
25W4 3/16 Bar |
27W4 3/16 Bar |
|---|---|---|---|
| 6 | 7-15/16 | 8 | 8-5/8 |
| 7 | 9-1/2 | 9-9/16 | 10-5/16 |
| 8 | 11-1/6 | 11-1/8 | 12 |
| 9 | 12-5/8 | 12-11/16 | 13-11/16 |
| 10 | 14-3/16 | 14-1/4 | 15-3/8 |
| 11 | 15-3/4 | 15-13/16 | 17-1/16 |
| 12 | 17-5/16 | 17-3/8 | 18-3/4 |
| 13 | 18-7/8 | 18-15/16 | 20-7/16 |
| 14 | 20-7/16 | 20-1/2 | 22-1/8 |
| 15 | 22 | 22-1/16 | 23-13/16 |
| 16 | 23-9/16 | 23-5/8 | 25-1/2 |
| 17 | 25-1/8 | 25-3/16 | 27-3/16 |
| 18 | 26-11/16 | 26-3/4 | 28-7/8 |
| 19 | 28-1/4 | 28-5/16 | 30-9/16 |
| 20 | 29-13/16 | 29-7/8 | 32-1/4 |
| 21 | 31-3/8 | 31-7/16 | 33-15/16 |
| 22 | 32-15/16 | 33 | 35-5/8 |
| 23 | 34-1/2 | 34-9/16 | 37-5/16 |
| 24 | 36-1/16 | 36-1/8 | 39 |