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Heavy Duty Grating |
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| CROSS BAR SELECTION |
| While bearing bar selection is critical for specifying a proper heavy-duty grating for your application, the life-cycle of your installation will often be influenced by selection of the appropriate cross bar. The table below details alternative cross bar sizes available. The sizes listed for Standard Loads are the standard twisted square or round cross bars supplied by Grating Pacific for a particular bearing bar size. These sizes have been selected to maximize manufacturing efficiency and economy. It is suggested that these sizes be specified when the grating is subject to intermittent traffic and only occasional full capacity loading. |
| The cross bars listed for Severe Loading are optional and will provide superior rigidity and durability when gratings are subjected to intense, continuous or repetitious traffic. Ideal for trench covers, highways and inlet grates, these cross bars enhance lateral stiffness thereby extending the service life of the grating. When specifying gratings with bearing bars centered at 1-3/8", 1-7/8" or 2-3/8", consideration of Severe Loading cross bars is highly recommended. |
NOTE: IN THE EVENT THAT A CROSS BAR SIZE IS NOT SPECIFIED, THE CROSS BAR SHALL BE SELECTED AT THE DISCRETION OF THE MANUFACTURER. |
| CROSS BAR SELECTION TABLE | |||||
| BEARING BAR SIZE | BB CENTERS 15/16", 1-3/16" and 1-3/8" | BB CENTERS 1-7/8" and 2-3/8" | |||
| THICKNESS | DEPTH | STANDARD LOADS | SEVERE LOADS | STANDARD LOADS | SEVERE LOADS |
| 1/4" 5/16" 3/8" 1/4" 5/16" - 1/2" 1/4" 5/16" - 1/2" |
1" - 2-1/2" 1" - 2-1/2" 1" - 2-1/2" 3" - 5" 3" - 5" 5-1/2" - 7" 5-1/2" - 7" |
5/16" Twisted 5/16" Twisted 5/16" Twisted 5/16" Twisted 3/8" Round 3/8" Round 3/8" Round |
5/16" Twisted 5/16" Twisted 5/16" Twisted 1 x 1/4 1 x 3/8 1-1/4 x 1/4 1-1/4 x 3/8 |
5/16" Twisted 5/16" Twisted 5/16" Twisted 3/8" Round 7/16" Round 7/16" Round 7/16" Round |
5/16" Twisted 5/16" Twisted 5/16" Twisted 1 x 1/4 1 x 3/8 1-1/4 x 1/4 1-1/4 x 3/8 |
| THE SIZES SHOWN ABOVE ARE LISTED AS MINIMUMS, TWISTED AND ROUND CROSS BARS ARE TYPICALLY INTERCHANGEABLE AND, UNLESS OTHERWISE SPECIFIED, MAY BE SUBSTITUTED AT THE DISCRETION OF THE MANUFACTURER. IN SUBSTITUTION, THE CROSS SECTIONAL AREA OF THE ALTERNATIVE CROSS BAR SHALL EQUAL OR EXCEED THAT OF THE MINIMUM SIZE LISTED ABOVE. |
