The load tables within this website provide load/deflection criteria for most common applications. These tables provide a concise reference allowing the specifying authority to select the appropriate bearing bar size and spacing for the intended application.
Pedestrian loads are commonly analyzed with uniform and concentrated loads. For pedestrian comfort, deflection is typically limited to 1/4".
Heavy duty and vehicular load tables are presented for specific load conditions. Heavy duty load tables are presented with deflection limited to the lesser of 1/8" or L/400.
If your application is not addressed by the load tables found in this website, please contact Grating Pacific for assistance selecting the product most appropriate for your application.
When specifying metal bar grating it is important to consider
the following factors:
- Service load required and acceptable deflection
- Unsupported clear span
- Flooring surface
- Banding and trim
Standard surface with
characteristics. Suitable for
Preferred for applications
where moisture or fluids
cause the walking surface
to become wet and slippery.
deposits on the walking
surface provide enhanced
applications in the public
way. For more information.
products are commonly provided with one of three finishes: bare steel (no finish);
painted with one coat of manufacturers red, black or silver paint; or hot dip galvanized in
accordance with ASTM A-123.
products are offered mill finish with optional chemical cleaning or anodizing
products typically require secondary cleaning due to discoloration that
occurs during welding and fabrication. Commercial cleaning, passivation, or abrasive
blasting can provide a uniform matte surface while electro-polishing leaves a bright
- All products can be provided with specialty finishes including enamel or epoxy
paints, or powder coating. When considering specialty finishes, contact Grating Pacific
Mill Finished & Anodized Aluminum
The open ends of the grating may be banded to provide additional
transverse stiffness and a finished architectural appearance.
Achieved by welding a flat bar, similar in size to the bearing bars,
to the cut end, banding enhances safety and should always be
specified when gratings are designed to be removable.
Banding can reduce impact stress by transferring load to adjacent
bearing bars and should always be specified when gratings are
subject to vehicular loads. Further banding descriptions and welding standards can be found here.