Specification-
Specification- Precast Concrete Man Hole Covers and Frames are manufactured as per Indian
Standard (IS 12592: 2002 Part I & II)
Recommended locations for placements
LD-2.5 - Suitable for use within residential and institutional complexes/ areas with pedestrian but occasional light motar vehicle traffic. These are also used for ‘Inspection Chambers’.
MD-10 - Suitable for use in Service Lane / Roads, on pavements for use under medium duty vehicular traffic including for car parking areas.
HD-20 - Suitable for use in Institutional/ Commercial areas/ Carriageways/ City trunk roads/ Bus terminals with heavy duty vehicular traffic of wheel load between 50 to 100 KN, like buses,trucks & parking areas & where the manhole chambers are located in between the pavement & the middle of the road.
EHD-35 - Suitable for use on carriageways in Commercial/ Industrial/ Port areas/ Warehouses/
Godwans where frequent loading & unloading of Trucks/ Trailers are common, with slow to fast
moving vehicular traffic of the types having wheel load up to 115 KN irrespective of the location
of the manhole chambers.
| Grade | Grade Designation | Type/ Shape of Cover | Sizes (In MM) |
|---|---|---|---|
| Light Duty | LD - 2.5 | Square, Rectangular & Circular | 300 * 300 450 * 450 600 * 450 600 * 600 900 * 700 560 Dia |
| Medium Duty | MD - 10 | Square, Rectangular & Circular | 300 * 300 450 * 450 500 * 500 600 * 450 600 * 600 450 Dia 500 Dia 560 Dia |
| Heavy Duty | HD - 20 | Square, Rectangular & Circular | 600 * 450 600 * 600 560 Dia |
| Extra Heavy Duty | EHD – 35 | Circular | 560 Dia |