16-001014-02A (Ultimate SCMMP)

    4. Placing the components

    The chamber is supplied with inlet and outlet sides
    clearly marked and the pipe ends should be cut to suit.
    The position of the pipe centreline should be marked on
    both the pipe end and the chamber surface to ensure
    correct alignment relative to line and level through the
    HumeGard® GPT.


    It is important for the operation of the unit that the base
    of the unit remains level and square horizontally after
    positioning in the excavation. This should be carefully
    checked particularly in the case of two part chambers
    where dimensions of each part are measured before set
    out and lowering into the excavation.


    For two part chambers a sealed joint must be created
    between the bottom and top sections. This can be
    accomplished by placing either a mastic bead or a two
    part epoxy resin (either will be supplied), along the
    joint surface of the bottom component. The epoxy
    resin should be approximately 80 mm wide and at least
    6 mm thick.




    5. Initial backfill

    Once the main chamber is correctly positioned within
    the excavation, backfill the sides of the excavation with
    a suitable material to just below the inlet and outlet
    openings. This will create a safe working platform to
    enable the installation of the inlet and outlet pipes and
    fitting of rubber connectors (if supplied).




4   HumeGard® GPT