VKDUALBLOCK

Installation data:
Inspection chambers
Local concrete bed
and surround to frame
UCL35/UCL35PP/UCL125
cover and frame
UCL125 ductile iron cover
and frame to BS EN 124
Class B125 for use in roads
Bond breaker around riser
(heavy duty DPC or similiar)
Surface
UCR2
chamber riser
UCC3 110mm or
UCC5 160mm base
UCC10
chamber
riser clip
Concrete
surround
200mm deep
Chamber riser
Bed and surround with
suitable granular material
450mm inspection chambers
450mm inspection chambers may be
used as an alternative to traditionally
constructed manholes for invert depths
of up to 1.2 metres. Intermediate
depths can easily be accommodated
by simply cutting a riser, between the
ribbed sections, to the desired height
using a fine tooth saw.
a 100mm bed of suitable as-dug or
granular material and care should be
taken to ensure the bedding material
is evenly compacted under the base
so that the chamber is fully supported.
During the installation stage and
prior to backfilling, it is recommended
that chamber riser retaining clips
alignment of the chamber during the
backfilling operation.
Sidefill material should extend to just
below ground level and the cast iron
cover and frame set in a concrete plinth.
Two versions of chamber base are
110/160mm inlets and 160mm outlet.
Both have ring seal socket connections.
chamber base to a riser, or jointing riser
to riser, the ring seal is always located
in the first groove, as detailed opposite.
To ease jointing it is recommended that
silicone lubricant is used.
compatible with 150mm Quantum pipe.
This is achieved by removing the snap
cap and seal from the chamber base
and inserting Quantum pipe into the
socket, with the seal located into the
first corrugation of pipe.
450mm inspection chambers are
designed to withstand water testing
in accordance with BS EN 1610.
Ring seal
110mm (UCC3) / 160mm (UCC5)
A full technical design and installation guide is available to download from marley.co.uk Technical hotline: 01622 852695
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