FRP Manhole Cover
Long Life Service, Good Aesthetics and decorative finish, No erosion due to rainwater and moving vehicles, FRP ( Fiber Reinforced Polymers )
Size mentioned on the cover, the technical sheet is clear opening size
Clear opening of the frame should not be smaller than the bore of the chamber on all sides and edges
The shape of the clear opening should be the same as the shape of the bore
If possible, bore opening must be designed after consideration of standard clear opening sizes available.
Take care before/during installation :
Standard covers are designed for installation on a flat road/footpath surface; kindly ensure the same before installation.
Ensure that the top level of the frame is aligned to the level of the road ensure that the frame is completely resting in concrete on all sides/edges
Ensure that the top level of the frame is aligned to the level of the road
Ensure that the frame is completely resting in concrete on all sides/edges
Ensure that the frame is allowed sufficient time for setting in concrete before usage
Ensure that the frame or cover is not dropped/exposed to impact prior to and after installation
Ensure that the cover is placed upright on the frame
Fixing instructions :
Prepare the concrete bed after considering the height of the frame
The frame should be completely embedded in a minimum of M-20 Grade Concrete
The level of the concrete bed must be flat so that entire frame is uniformly supported
In case a section of the frame is not supported with solid ground, a concrete beam (min m-20 grade) not less than 100mm in height must be installed for resting below unsupported section
A frame should be allowed to set in concrete for a minimum time of 48hrs before its use
Why FRP is best?
Fibre reinforced plastic (FRP) is the next generation polymer made of a polymer matrix reinforced with fibers. These polymers are considered to be the strongest one and most resistive to deforming forces. With the advancements, FRP has totally replaced traditional materials like RCC, CI, and steel for manufacturing manhole covers, gratings, doors, window shades, and security cabins.
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