8.5 Agr Sani Sewer RehabCITY OF SALINA
REQUEST FOR COMMISSION ACTION DATE TIME
04/07/97 4:00 P.M.
AGENDA SECTION: ORIGINATING DEPARTMENT: APPROVED FOR
NO. 8 AGENDA:
Engineering & Utilities
NO. 5
BY: Don Hoff BY: ~
Item
Approval of a proposal from Insituform Plains, Inc. to rehabilitate a sanitary sewer pipeline.
Backeround
As you may recall, Mowery Clinic received permission recently to construct an expansion to
their facility that involved positioning the new structure in a public utility easement. They were
required, however, to properly protect an existing 21" diameter public sanitary sewer located in
the easement.
After several meetings with representatives of Mowery Clinic to discuss various protection
options, it was concluded a trenchless method would best serve the City's and Mowery's
interests. We contacted a company with considerable experience in this area to investigate this
option and submit a priced proposal to line approximately 530 L.F. of 21" diameter sewer main
between Elmore Dr. and Roach St. with a resin impregnated tube (Insitupipe) placed inside the
existing main. This liner will add structural strength and provide chemical resistance to the
existing sanitary sewer system.
The total cost of the proposal submitted was $62,375. Mowery Clinic has agreed to pay
$13,534.38 as their share of the liner for constructing over the west portion of this sewer main.
We should be able to recover a similar amount in the future if other building activity occurs in
the utility easement between the two Mowery facilities.
This project would be funded under System Enhancement (Wastewater Division - 1997 Budget).
Only Insituform Plains, Inc., Wichita can perform this type of work in our area and their work
schedule will allow the Mowery Clinic expansion to proceed without delay and with minimal
interruption to their existing clinic.
COMMISSION ACTION
MOTION BY SECOND BY
THAT:
CITY OF SALINA
REQUEST FOR COMMISSION ACTION DATE TIME
04/07/97 4:00 P.M.
AGENDA SECTION: ORIGINATING DEPARTMENT: APPROVED FOR
NO. AGENDA:
Engineering & Utilities
ITEM
NO.
BY: Don Hoff BY:
Recommendation
We have reviewed the proposal as submitted and conclude the scope of work and schedule will
provide the additional pipe strength to adequately protect our pipeline and also satisfy Mowery
Clinic's needs. It is recommended the City Commission approve the attached proposal as
submitted by Insimform Plains, Inc. in the amount of $62,375.
Attachment: Proposal
ResolutJ_on Number 97-5141
I rl.slCU®
I ~ ·
PLAINS, INC.
Trenchless Pipeline Technologies
February 24, 1997
City of Salina, Kansas
City Hall-300 W. Ash
Salina, KS 67402-0736
Attention: Mr. Don Hoff, City Engineer
PROPOSAL
Insituform Plains, Inc. proposes to furnish all labor, equipment and materials
required to reconstruct the 530 lineal feet of 21 inch diameter sanitary sewer
described below, using the Insituform process for trenchless pipeline
reconstruction, all in accordance with the Construction Specifications and the
"Standard Proposal Terms and Conditions", attached. These attachments should
be reviewed carefully since they contain the detailed particulars of this proposaL
Project Description. The subject sanitary sewer section runs parallel to and a
half block North of Crawford Street, from the manhole (#.47) in Roach Street to
the manhole (~45) in Elmore Street, with one intermediate abandoned manhole.
Insituform Pipe Wall Thickness. We propose to use a wall thickness of 0.37".
By-pass Pumpin.q and Traffic Control. The City, utilizing their own forces and
equipment, has agreed to furnish by-pass pumping and traffic control for the
project.
Proposed Contract Price. We propose to perform the work described herein for
a Lump Sum price of $62,375.00.
Project Schedule.. The project would take three to four days to complete. The
time for commencement is negotiable. In order to avoid the disruption of the Clinic
and other businesses on this line, the inversion would be scheduled to begin at
noon on a Saturday. We would need the by-passing and traffic control operating
by 8:00 am Friday morning to allow time for cleaning and identifing service
connections before the inversion. We would be finished by the beginning of
business on the following Monday morning.
(Continued)
4421 W, Harry. Wichita, Kansas 67209 · 1-800-292-6329. Fax: (316) 942-4012
This proposal is submitted in duplicate for consideration by the City of Salina. If
the City wishes to proceed with this project please sign and return one copy of
this proposal and issue a Tax Exemption Certificate. By the execution of the
signature lines below both parties mutually agree to the stipulations contained
herein.
ACCEPTANCE
OWNER
CITY OF SALINA, KANSAS
By.
CONTRACTOR
INSITUFORM pxLAINS, INC.
INSITUFORM PLAINS, LNC.
STANDARD PROPOSAL TERMS AND CONDITIONS
Proposal Inclusions
The prices stated in this proposal include:
* Contract Bonds
* Certificate of insurance with standard coverage's
* Mobilization and demobilization
* Pipeline cleaning
* Preliminary video and service connection identification
* Insitutube wetout, inversion, curing and finishing
* Active service connection reinstatements
* As-built video inspection and video tape
* Standard one year warranty
Proposal Exclusions
Not included in the prices stated in this proposal are costs associated with the items listed below.
These items would be at an additional cost or would be furnished by others at no cost to the
contractor:
* By-pass pumping of sewage and traffic control by others
* Premiums for special insurance coverage requirements
* Water from a fire hydrant or other high volume source within a convenient distance
from each inversion location
* Water meter charge or deposit
* Point repairs ( none required according to video tape of line )
* Manhole rehabilitation and/or replacement
* Permits or licenses
* Sales and/or use taxes. Owner to furnish Contractor with a tax exemption
certificate. If this is not a tax exempt proiect add 5.9% to the Contract Price
* Construction access easements
* Disposal site for debris resulting from cleaning
* If any hazardous or toxic materials are encountered during the project, the Owner will
be responsible for the removal and disposal of the materials.
* Limits of liability. In consideration of Contractor's agreement,to maintain not less
than $10,000,000 of comprehensive general liability insurance in the form required by
the Contract, Contractor's liability to the Owner for any matter covered by such
insurance will be limited to the extent of such insurance and the Owner will indemnify
and hold Contractor harmless from any third party claims covered by such insurance
to the extent such claims exceed the limits of such insurance. Neither party shall be
liable to the other for consequential damages relating to the contract. In case of
conflict between this provision and any other provision in the Contract as ultimately
executed, this provision shall govern and prevail.
conflict between this provision and any other provision in the Contract as ultimately
executed, this provision shall govern and prevail.
Proposal Terms
Final payment due within thirty days of completion of the project
Prices stated are in effect for ninety days from the date of this proposal and may be
extended at the sole option of Insituform Plains, Inc.
SPECIFICATIONS FOR
INSITUFORM®
1. INTENT
1.1
It is the intent of this specification to provide for the reconstruction of
pipelines and conduits by the installation of a resin-impregnated flexible
tube (Insitutube®) which is inverted into the original conduit by use of a
hydrostatic head. The resin is cured by circulating hot water within the
tube. When cured, the finished Insitupipe® will be continuous and tight
fitting.
2. REFERENCED DOCUMENTS
2.1
This specification references ASTM F1216 which is made a part hereof by such
reference and shall be the latest edition and revision thereof. In case,of
conflicting requirements between this specification and ASTM F1216, this
specification will govern. The methods, materials and workmanship shall also
meet the standards of Insituform Technologies, Inc.,'Memphis, Tennessee, the
Licensor of the process, and the manufacturer of the Insitutube.
3. PRE-QUALIFICATION
3.1 'Only bids for pre-qualified products will be read. Bids submitted for
products or from Contractors that have not been pre-qualified will be
returned unopened. The Contractor and the proposed method of reconstruction
and the product manufacturers name shall be clearly identified on the bid
envelope.
4. MATERIALS
4.1 Tube - The tube material shall meet the requirements of ASTM F1216,
Section 5.1.
4.1.1
The tubes shall have a uniform thickness that when compressed at
installation pressures will equal the specified nominal tube
thickness.
4.1.2
The tube shall be fabricated to a size that when installed will
tightly fit the internal circumference and length of the original
pipe. Allowance should be made for circumferential stretching
during inversion.
4.1.3
The outside layer of the tube (before inversion) shall be plastic
coated with a translucent flexible material that clearly allows
inspection of the resin impregnation (wetouD) procedure. The
plastic coating shall not be subject to delamination after curing.
4.1.4
The tube shall be homogeneous across the entire wall thickness
containing no intermediate or encapsulated elastomeric layers.
materials shall be included in the tube that are subject to
delamination in the cured Insitupipe.
No
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4.2
5.
5.1
5.2
5.3
6~2
6.3
o
4.1.5
The wall color of the interior pipe surface of the Insitupipe after
installation shall be a light reflective color so that a clear
detailed examination with closed circuit television inspection
equipment may be made.
Resin - The resin system shall meet the requirements of ASTM F1216.
STRUCTURAL REQUIREMENTS
The Insitupipe shall be designed as per ASTM F1216, Appendix X1. The design
shall assume no bonding to the original pipe wall.
The layers of the cured Insitupipe shall be uniformly bonded. It shall not
be possible to separate any two layers with a probe or point of a knife blade
so that the layers separate cleanly or the probe or knife blade moves freely
between the layers; nor shall separation of the layers occur during testing
performed under the requirements of this specification.
The cured Insitupipe shall.conform to the minimum structural standards, as
listed below.
Cured Pipe Standard Results
Flexural Stress
ASTM D-790
4,000 psi
Modulus of Elasticity
ASTM D-790
400,000 psi
TESTING REQUIREMENTS
Chemical Resistance The Contractor shall certify that the Insitupipe shall
meet the chemical resistance requirements of ASTM F1216, Appendix X2.
Samples for testing shall be of tube and resin system similar to that
proposed for actual construction. It is required that samples with and
without plastic coating meet these chemical testing requirements.
Hydraulic Capacity - The Contractor shall certify that the Insitupipe shall
have a minimum of the full flow capacity of the original pipe before
rehabilitation. Calculated capacities may be derived using a commonly
accepted roughness coefficient for the existing pipe material taking into
consideration its age and condition. The roughness coefficient of the
Insitupipe shall be verified by third party test data.
Insitupipe Field Samples - When requested by the Owner, the Contractor shall
submit test results from previous field installations of the same resin
system and tube materials as proposed for the actual installation. These
test results must be relevant to the size and nature of this pending project
and verify that the Insitupipe physical properties specified in Section 5.3
have been achieved in previous field applications. Testing samples for this
project shall be made and tested as described in Section 10.1.
INSTALLATION RESPONSIBILITIES FOR INCIDENTAL ITEMS
It shall be the responsibility of the owner to locate and designate all
manhole access points open and accessible for the work, and provide rights of
access to these points. If a street must be closed to traffic because of the
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7.2
7.3
7.4
7.5
orientation of the sewer, the Owner shall institute the actions necessary to
do this for the mutually agreed time period. The Owner shall also previde
free access to water hydrants for cleaning, inversion and other work items
requiring water.
Cleaning of Sewer Lines The Contractor, when required, shall remove all
internal debris out of the sewer line that will interfere with the
installation of the Insitupipe (refer to sewer cleaning specifications
contained elsewhere in this document). The Owner shall also provide a dump
site for all debris removed from the sewers during the cleaning operation.
Unless stated otherwise, it is assumed this site will be at or near the
sewage treatment facility to which the debris would have arrived in absence
of the cleaning operation. Any hazardous waste material encountered during
this project will be considered as a changed condition.
Bypassing Sewage The Contractor, when required, shall provide for the flow
of sewage around the section or sections of pipe designated for repair. The
bypass shall be made by plugging the line at an existing upstream manhole, and
pumping the flow into a downstream manhole or adjacent system. The pump and
bypass lines shall be of adequate capacity and size to handle the flow. The
Owner may require a detail of the bypass plan to be submitted.
Inspection of Pipelines Inspection of pipelines shall be performed by
experienced personnel trained in locating breaks, obstacles and service
connections by closed circuit television. The interior of the pipeline shall
be carefully inspected to determine the location of any conditions which may
prevent proper installation of the Insitutube into the pipelines, and it
shall be noted so that these conditions can be corrected. A video tape and
suitable log shall be kept for later reference bY the Owner.
Line Obstructions It shall be the responsibility of the Contractor to clear
the line of obstructions, such as solids and roots that will prevent the
insertion of the Insitutube. If pre-installation inspection reveals an
obstruction such as a protruding service connection, dropped joint, or a
collapse that will prevent the inversion process, and it cannot be removed by
conventional sewer cleaning equipment, then the Contractor shall make a point
repair excavation to uncover and remove or repair the obstruction. Such
excavation shall be approved in writing by the Owner's representative prior
to the commencement of the work and shall be considered as a separate pay
item.
INSTALLATION
The Insitupipe installation shall be in accordance with ASTM F1216, Section
7, with the following additional requirements:
8.1.1
Resin Impregnation - The quantity of resin used for tube
impregnation shall be sufficient to fill the ~olume of air voids in
the tube with additional allowances for polymerization shrinkage
and the loss of resin through cracks and irregularities in the
original pipe wall. A vacuum impregnation process shall be used.
A roller system shall be used to uniformly distribute the resin
throughout the tube.
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8.1.2
8.1.3
Temperature gauges shall be placed to determine the gemperature of
the incoming and outgoing water from the heat source. Another such
gauge shall be placed inside the tube at the remote end to
determine the temperature at that location during the cure cycle.
Installation and curing shall be accomplished by inversion
utilizing water under hydrostatic pressure of a vertical standpipe.
Compressible gases such as air or steam are not allowed.
9. REINSTATEMENT OF BRANCH CONNECTIONS
9.1
It is the intent of these specifications that branch connections to buildings
be reopened without excavation, utilizing a remotely controlled cutting
device, monitored by a video TV camera. The Contractor shall certify he has
a minimum of 2 complete working cutter units plus spare key components on the
site before each inversion. No additional payment will be made for
excavations for the purpose of reopening connections and the Contractor will
be responsible for all costs and liability associated with such excavatioN
and restoration work.
10. INSPECTION
10.1 Insitupipe samples shall be prepared and tested in accordance with ASTM
F1216, Section 8.1 using either method proposed.
10.2 Leakage testing of the Insitupipe shall be accomplished during cure while
under a positive head. Products in which the pipe wall is cured while not in
direct contact with the pressurizing fluid (e.g., a removable bladder) must
be tested by an alternative method approved by the Owner.
10.3 Visual inspection of the Insitupipe shall be in accordance with ASTM F1216,
Section 8.4.
11. CLEAN-UP
11.1 Upon acceptance of the installation work and testing, the Contractor shall
reinstate the project area affected by the operations.
12. PAYMENT
12.1 Payment for the work included in this section will be in accordance with the
prices set forth in the proposal for the quantity of work performed.
Progress payments will be made monthly based on the work performed during
that period.
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