Other Information :
NOTE: Length of tread is distance between outer faces of the end flats
Banding may have less depth than bearing bars for trench grating to allow drainage. Full depth banding will be provided unless otherwise specified. Clearances shown are recommended, but many vary in accordance with dimensional tolerances. Heavy duty grating should be designed to have structural support under each bearing bar at cutouts.
As shown in the drawing below, all rectangular cutouts are made to the next bearing bar beyond the penetration with a clearance not to exceed bearing bar spacing.
| GENERAL RECOMMENDATIONS FOR GRATING INSTALLATION |
- Gratings must be installed with cross bars on top side.
- Notching of bearing bars at supports to maintain proper elevation is generally not recommended. If notching is required for installation, manufacturer should be consulted.
- Metal should always be used for all grating supports.
- A minimum of 25mm bearing shall be provided for Aluminum and Light Duty Steel Grating. For Heavy Duty Steel Grating, 25mm minimum bearing shall be provided for bearing bar depths up to 50mm, and 50mm minimum bearing shall be provided for depths of 50mm and over. This bearing surface does not include the support angle fillet radius noted above.
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* This dimension may vary due to bearing bar spacing.
Cutouts for circular obstructions are recommended to beat least 50mm larger in diameter than the obstruction. It is further recommended that cutouts for all piping 100mm or less be made in the field.
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KHANSFORGE SDN. BHD.
No. 1, Jalan Wawasan 4/KU7,
Sungai Kapar Indah,
42200 Klang Bandar Diraja,
Selangor Darul Ehsan, Malaysia.
Tel: 03-3290 2267
Fax: 03-3291 4584
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