EnZar®

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
 A drawing shows 19w4 and 19p4 steel bar grating 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
A drawing shows 19w2 and 19p2 steel bar grating 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
A drawing shows 15w4 and 15p4 steel bar grating 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
 A drawing shows 15w2 and 15p2 steel bar grating 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
A drawing shows 11w4 and 11p4 steel bar grating 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
A drawing shows 11w2 and 11p2 steel bar grating 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)