Steel Bar Grating Spacing Tables

Here are spacing tables of welded and press locked steel gratings. You can refer to the open area and specific applications of each type and decide which type is ideal for your projects.

Grating Type	Spacing	Open area*	Description
19-W-4 19-P-4		78%	Bearing bars spaced at 1-3/16" on center and cross bars at 4" on center. The workhorse of industrial flooring, popular for platforms, catwalks, mezzanines and stairways.
19-W-2 19-P-2		73%	Bearing bars spaced at 1-3/16" on center and cross bars at 2" on center. Excellent for short spans and applications where small wheeled carts continuously cross the grating surface.
15-W-4 15-W-4		75%	Bearing bars spaced at 15/16" on center and cross bars at 4" on center. The closer spaced bearing bars increase load capacity by more than 26% when compared to similar gratings produced with bearing bars a 1-3/16" on center.
15-W-2 15-W-2		69%	Bearing bars spaced at 15/16" on center and close spaced cross bars at 2" on center. The closer spaced bearing bars and cross bars provide additional flooring surface to support pedestrian and wheeled traffic.
11-W-4 11-P-4		68%	Bearing bars spaced at 11/16" on center and cross bars at either 4" or 2" on center. Types 11-4 and 11-2 with 3/16" thick bearing bars comply with the spacing requirements of the Americans with Disabilities Act. For ADA installations, specify that the bearing bars span perpendicular to the normal flow of traffic.
11-W-2 11-P-2		63%

* Percentage of open area is based upon 3/16" thick bearing bars and .275" cross bars. Contact if exact open area calculation is required for alternative bearing bar thicknesses or cross bar sizes.

How to specify steel grating

• Select type of grating
  • W for welded steel grating
  • P for press locked steel grating
• Select material of grating
  • Stainless steel
  • Carbon steel
  • Galvanized steel
• Select bar spacing from above table
• Select bearing bar size
• Select plain or serrated surface.
• Specify banding or additional trim required.
• Specify finish
  • Electro polished
  • Mill finished
• Specify fasteners (if required)