11-W-4 Carbon Steel Bar Grating with 11/16 in. Bearing Bar Spacing and 4 in. Cross Bar Spacing for Industrial Platforms

11-W-4 carbon steel bar grating is a welded close-mesh panel featuring bearing bars at 11/16 in. (17.5 mm) on center and cross bars at 4 in. (100 mm) on center. This configuration is ideal for industrial platforms and walkways where foot traffic, wheeled trolleys, and dropped objects must all be accommodated by the same floor surface. Platform selection typically focuses on finding the tightest mesh that can span your support spacing within budget constraints.

Rule of thumb: The tighter the mesh, the more bars carry the load and the less that falls through. Choose 11-W-4 when the platform sits over equipment, a public route, or a work area where dropped objects pose a hazard.

Bearing bars must run across the span, perpendicular to the supporting beams. Rotating a panel 90° dramatically reduces its usable span. Maintain clear span within the figures below and band every cut end.

Figures are conservative planning values at L/200 deflection per ANSI/NAAMM MBG 531 practice. Request our load table for your exact span, load case, and deflection limit.

11-W-4 is a light duty pedestrian panel. Any application involving hard wheels requires a heavier designation and a bearing bar thickness quoted separately.

• Bearing bar direction: Always perpendicular to the support beams; verify before unloading.
• Clips: Four per panel minimum (two per end), using galvanized or stainless steel saddle clips into the supporting steel.
• Gaps: Maintain consistent panel-to-panel and panel-to-wall gaps; close mesh hides small misalignments less effectively than 19-W-4.
• Cut-outs: Band all cut edges and around penetrations to restore load path—unbanded cut-outs commonly cause "soft" corners.
• Touch-up: Grind and cold-galvanize any site-cut edge to maintain continuous ASTM A123 coating.