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Metal Bar Gratings
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METAL BAR GRATINGS
- Introduction to Metal Bar Gratings
- Welded Steel Grating
- Swaged Aluminum Grating
- Aluminum Plank Grating
- Pressure Locked Grating
- Stainless Steel Grating
- Riveted Grating
- Stair Treads
- Heavy Duty Grating
- Bridge Decking
- Embed Frames
- Trench Grating Systems
- Fasteners & Banding
- Panel Widths & Layout
- Manufacturing & Installation
Riveted Grating
Riveted Gratings, which provided the foundation for the manufacture of commercial grating products, continue to serve many of industry's most demanding applications. Manufactured by riveting crimped flatbar cross members to rectangular bearing bars in a recticuline pattern, these products offer superior resistance to impact, fatigue and repetitive loads. The truss style reticulated cross bars offer excellent strength and durability when subjected to the concentrated stresses of rolling loads imposed by cart and dolley traffic.MATERIALS AND SPECIFICATIONS
Riveted Gratings are produced in carbon steel, 6000 series aluminum and 300 series stainless steels. To specify Riveted Grating, first specify the type of grating from the table below. In the instance of Standard Riveted Grating, The "R" indicates the method of assembly shall be riveted construction, the "18" indicates that the bearing bars shall be spaced 18/16's (1-1/8) inches apart, and the "7" indicates that the rivets shall be spaced at 7" on center. Following selection of the type of grating, consult the Riveted Grating Load Table to select the appropriate bearing bar size for the loads and spans to be served. To complete the specification, indicate which of the three materials is desired for the application, carbon steel, aluminum or stainless steel.Sample Specifications:
R-18-7 1" X 3/16" Carbon Steel
R-12-3.5 1-1/2" X 3/16" 6063 Aluminum
R-18-7 2" X 3/16" 304 Stainless Steel
R-12-3.5 1-1/2" X 3/16" 6063 Aluminum
R-18-7 2" X 3/16" 304 Stainless Steel
SERRATED SURFACE
When the walking surface of bar gratings are subject to the accumulation of moisture or other slippery substances, the optional serrated surface should be considered. Unlike rectangular mesh gratings where the bearing bars are typically constructed with the serrated surface, the standard method of manufacture for riveted gratings is to serrate the crimped cross member. When the grating is assembled, these crimp bars are allowed to project slightly above the top surface of the bearing bars to provide a superior unidirectional skid resistant surface. Environments particularly prone to unsafe walking conditions can be further specified as 100% serrated where both the bearing bars and the crimp bars are provided with serrations.
