Finance Committee

k.

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8. Finish:

Mix resin and hardener and wet out cloth in accordance with manufactures
recommendations.

Place the wetted cloth around the deflated packer and tie into place with plastic strips.
Winch inflatable packer and repair material into conduit and accurately position.
Inflate the packer, which breaks the ties, and forms the resin impregnated cloth

to the inside of the pipe, excess resin being forced into cracks and open joints.

If steam is used to accelerate cure, start injecting steam and monitor temperature

of the conduit specified. An allowance shall be made for changes in circumference
of the conduit by free overlap during inflation of the tube.

b. The minimum length shall be determined to effectively span the designated defective
section, plus one foot at either end. The lengths shall be verified in the field before
pulling the tube into the pipe.

c. The thickness of the pipe within a pipe shall be designed to conform to actual field
conditions.

SECTION 02650A

SPECIFICATION FOR CURED IN PLACE POINT REPAIR

1. Intent:

It is the intent of this specification to provide for the rehabilitation of sewers by installation of a
resin- impregnated Fiberglas / carbon fiber patch into the existing pipe using an inflatable
element and air / steam pressure. Curing shall be accomplished by either ambient curing or by
steam to cure the resin / fiber glass / carbon fiber cloth to a hard, impermeable corrosion
resistant pipe within a pipe.

2. General:

4. Any repairs required by the Engineer as a result of the post construction
internal inspection shall be performed by the Contractor.

5. Contractor shall perform a post construction internal inspection in accordance
with Section 02760. Final acceptance of the work shall not be granted until
post installation inspection has been reviewed and approved by the Engineer.

3.03

SEALING AT MANHOLES

A tight seal at the manhole walls consisting of a resin mixture compatible with the
liner/resin system may be applied in accordance with manufacturer specifications.

FINISH

The finished CIPP shall be continuous over the entire length of any section
and be as free as commercially practicable from visual defects such as
foreign inclusions, dry spots, pinholes and delamination.

TESTING, INSPECTION AND ACCEPTANCE

A. MATERIAL TESTING

1.

E.

F.

The Contractor shall ensure that the pressure in the liner exceeds both the pressure
due to the groundwater head and any pressure due to sewage in laterals or
connecting side sewers

A pre-liner may be installed prior to liner inversion in sewers with infiltration or
missing pipe sections.

CURING

BYPASS PUMPING

Bypass pumping shall usually be made by plugging the upstream manhole and
pumping the sewage into the downstream manhole, or by pumping into an
alternate sewer system of adequate capacity to handle the additional sewage flow.
The pump and bypass lines shall be sized to handle the anticipated flows.

G. MINIMUM THICKNESS
Minimum Liner Thickness unless otherwise specified shall be as follows:

Nominal Pipe Diameter Minimum Thickness

8-inch 45mm
10-inch 6.0 mm
12-inch 6.0 mm
15-inch 7.5mm
> 15-inch <50 SDR

2.04 CHEMICAL RESISTANCE

2.03

(MSDS) for the resin, catalyst, cleaners and repair agents should be submitted
to the Engineer for review.

DESIGN AND PHYSICAL PROPERTIES

A.

THICKNESS DESIGN

PART 2 MATERIALS

2.01 GENERAL

A. CERTIFICATE OF COMPLIANCE
A Certificate of Compliance with these Specifications shall be provided by the
manufacturer for all materials furnished under these specifications.

2.02 MATERIALS

A. LINER TUBE

1.