3.03
Active leaks shall be stopped with chemical or hydraulic sealants or cements prior to
installation.
All aveas to be sealed shall be dry, clean, and free of dust, dirt, sand, and othe
contaminants prior to installation. A torch may be required to ensure a dry surface.
Chimney seal shall be installed in strict accordance with the manufacturer’ s installation
instructions over the entire chimney area and onto the frane and cone as shown on the
Rehabilitation of Existing Manhole detail on Drawing DO2. A primer shall be used if
recommended by the manufacturer.
CHEMICAL GROUT (EHERE APPLICABLE):
Install chemical grout in accordance with Section 02760 — Structural Grouting.
Chemical grouting shall be completed and accepted prior to performing internal lining if
both methods are specified or directed by the Owner and/or Engineer for a specific
menhole.
INTERNAL LINER SYSTEM:
All loose and protruding mortar, bricks, roots, aid anything else that might prevent proper
application of the liner shall be removed prior to application. Manhole steps, protruding
pipes, and exposed rebar shall be renoved and ground back 1/2 inch into the manhole
wall. Manhole steos and protruding pipe shall not be replaced after installation of the
liner.
High pressure water shall be used during surface preparation to produce a clean, abraded,
and sound surface with no evidence of laitance, loose material, or other contaminants.
Surface shall have a suitable profile for application of liner in accordance with the
manufacturer’ s requirements.
Active leaks shall be stopped with chemical or hydraulic sealants or cements prior to
installation.
All areas to be lined shall be dry, clean, and free of dust, dirt, sand, and othe
contaminants prior to installation. A torch or heat lanp may be required to ensure a dry
surface.
Any spray equipment used for application shall be specifically designed to accurately
ratio and apply the liner system. Liner system shall be installed in strict accordance with
the manufacturer’ s installation instructions over the entire interior of the manhole and 2
inches up onto the frane and 6 inches down onto the bench as shown on the
Rehabilitation of Existing Manhole detail on Drawing DQ2.
Multilayered polyurethane/polymeric stress skin panel system shall be installed in strict
accordance with the manufacturer's installation instructions, including those for
02800-6
