Manhole Covers & Frames
- Covers are provided with hot dip galvanized lifting hooks
- Test Load as per (IS-12592 Part 1) for Extra Heavy Duty is 35 MT, Heavy Duty is 20 MT, Medium Duty is 10 MT, and Light Duty is 2.5MT
- Covers can also be provided with holes for storm water drainage
- Note: Covers of non standard sizes can also be supplied
- Concrete grade of M-30 or higher is used
| LOAD BARRING CAPACITY | DESCRIPTION | CLEAR OPENING IN FRAME , A | B | C | D | E
MIN |
F
NOMINAL |
| L D -2.5 Tonnes | Light Duty rectangaular | 450 x 600 | 50 | 50 | 50 | 50 | 559 x 709 |
| Light Duty Square | 450 x 450 | 50 | 50 | 50 | 50 | 559 x 559 | |
| MD – 10 Tonnes | Medium
Duty rectangaular |
450 x 600 | 70 | 50 | 50 | 50 | 560 x 710 |
| Medium Duty Square | 450 x 450 | 70 | 50 | 50 | 50 | 560 x 560 | |
| 600 x 600 | 70 | 50 | 50 | 50 | 710 x 710 | ||
| Medium Duty Circular | 560 | 70 | 50 | 50 | 50 | 670 | |
| 600 | 70 | 50 | 50 | 50 | 710 | ||
| HD – 20 Tonnes | Heavy Duty Square | 600 x 600 | 90 | 75 | 75 | 75 | 900 x 900 |
| Heavy Duty Circular | 450 x 450 | 90 | 75 | 75 | 75 | 610 | |
| 560 | 90 | 75 | 75 | 75 | 900 | ||
| 600 | 90 | 75 | 75 | 75 | 900 | ||
| EHD – 35 | Extra Heavy Duty Square | 600 x 600 | 100 | 75 | 75 | 75 | 760 x 760 |
| Extra Heavy Duty Circular | 560 | 100 | 75 | 75 | 75 | 720 | |
| 600 | 100 | 75 | 75 | 75 | 760 | ||