DOT RFQ-2839 Scope, Plans, & Specifications.pdf

Iowa DOT Bidding Opportunity

645-DOTRFQ-2839-2026

The DOT is seeking a plumbing vendor for the following interior and exterior work.

Interior work includes removing existing grates (as shown in the provided diagram) from the interior drains. Cleaning out and flushing drain lines into the OWS. Then reinstalling all the existing grates and replacing any broken during removal.

Exterior work includes, vacuuming out both the storm and sanitary manholes in the parking lot.

Jetting the storm sewer from the manhole in the parking lot to the OWS. Disconnecting the existing the OWS outlet pipe from the storm sewer manhole in the parking lot and connect it into a new 4” x4” x 6” wye on the sanitary sewer pipe. Installing a new 6” PVC pipe from the new wye to the sanitary manhole in the parking lot. Installing a new 6” PVC pipe from the sanitary manhole in the parking lot to the sanitary manhole in the street (remove 4"). Disconnecting the storm sewer manhole in the parking lot from the OWS and plugging the outlet pipe, removing the frame and lid, filling it with flowable fill, and abandoning it in place.

Remove all the grates from the interior drains, contractor to use a chain spinner to clean lines out and flush the removed material into the OWS. Replace all grates that were broken during removal.

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NOT TO SCALE

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1) Vac out both the storm and sanitary manholes in the parking lot

2) Remove all the grates from the interior drains, contractor to use a chain spinner to clean lines and flush the removed material into the OWS. Replace all grates that were broken during removal. Provide unit pricing as part of bid.

3) Jet the storm sewer from the manhole in the parking lot to the OWS and vac out jetted materials

4) Vac out the oil water separator (OWS). Televise and record all cleaned lines and confirm condition. Provide unit pricing for lateral lining as part of bid if needed.

5) Disconnect the existing OWS outlet pipe from the storm sewer manhole in the parking lot and connect it into a new 4” x4” x 6” wye on the sanitary sewer pipe

6) Install a new 6” PVC pipe from the new wye to the sanitary manhole in the parking lot.

7) Install a new 6” PVC pipe from the sanitary manhole in the parking lot to the sanitary manhole in the street.

8) After disconnecting the storm sewer manhole in the parking lot from the OWS and plugging the outlet pipe, remove the frame and lid, fill it with flowable fill, and abandon it in place jsheph1 Text Box

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DONNELLSON SEWER REPAIR

BG-2D13 (014) --80-56

June 2026

33 31 23 - 1 CURED-IN-PLACE PIPE LINER

SECTION 33 31 23

CURED-IN-PLACE PIPE LINER

1.01 SECTION INCLUDES

A. Cured-in-place pipe liner materials.

B. Access, cleaning and inspection.

C. Bypassing.

D. Resin impregnation.

E. Curing and cool-down.

F. Chemical resistance.

G. Inspection and testing.

H. Clean-up.

1.02 INFORMATIONAL SUBMITTALS

A. Product Data: Manufacturer's catalog data for pipe liner, resin, and recommended installation method.

B. Certificates: Certifications from manufacturer evidencing compliance with standards and installation experience listed herein for pipe lining.

C. Test and evaluation reports: Final report and video footage of sewer.

D. Quality control data: Lining schedule detailing planned dates for inspecting the project site and overall lining schedule.

E. Qualification statements: Documentation supporting installer qualification requirements specified.

F. Liner thickness design.

1.03 QUALITY ASSURANCE

A. Installer qualifications: Installer shall satisfy insurance, financial, and bonding requirements of

Owner, and shall have at least 5 years active experience in commercial installation of cured-in-place (CIPP) pipe liner products, using installation process specified.

B. Both rehabilitation manufacturing and installation processes shall operate under quality management system which is third-party certified to ISO 9000 or other internationally recognized organization standards. Proof of certification shall be required for approval.

C. Contractor shall be responsible for control of material and process variables to provide finished CIPP possessing minimum properties specified in ASTM F1216, and supplemented herein.

1.04 WARRANTY

A. Guarantee sewer pipe lining work against faulty workmanship or materials for a period of one year after completion of work.

PART 2 PRODUCTS

2.01 REFERENCE STANDARDS

A. ASTM D790 - Standard Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials; 2025.

B. ISO 9000 - Quality Management Systems -- Fundamentals and Vocabulary; 2015.

2.02 DESIGN CRITERIA

A. Design cured-in-place pipe (CIPP) liner in accordance with procedures of ASTM F1216, Appendix X1 and Specifications.

B. Material properties used in design calculations shall be long-term (time-corrected) values.

Contractor shall be familiar with site conditions when preparing liner design.

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C. Calculate required minimum thickness for each pipe assuming existing hosting pipe will be fully deteriorated in future.

D. Assume following parameters for design:

1. Modulus of soil reaction, E`s:

Soil Modulus In-Situ Condition E`s Depth < 10 ft 700 psi 10 feet??? Depth < 15 ft 1000 psi Under Pavement 1000 psi Depth > 15 ft 1,500 psi Under RR Tracks 1,500 psi

2. Unit weight of soil = 120 pcf.

3. Term C/N in equation X1.3 shall not exceed 0.40.

E. Chemical resistance:

1. Furnish results of past testing of like materials in accordance with Test Method D543.

Exposure shall be for minimum of 1 month at 73.4F (23C). During this period, CIPP test specimens shall lose no more than 20% of initial flexural strength and flexural modulus when tested in accordance with Section 8 of ASTM F1216.

2. Contractor shall pay for costs associated with chemical resistance tests.

3. At least 7 days prior to commencement of work, provide Engineer proof that material meets requirements specified.

F. Physical properties of cured CIPP shall have minimum initial test values as given in Table 1 of

ASTM F1216 and supplemented below, for polyester, vinyl ester or epoxy resins. Properties for these or other enhanced resins shall be substantiated with data.

Standard Resin Test Property Test Value Test Method Flexural Strength 5,000 psi ASTM D790 Flexural Modulus 300,000 psi ASTM D2990 50-Year Flexural Creep Modulus 150,000 psi ASTM D790

G. Dimensions:

1. Allow for felt tube length and circumference for stretch during installation and shrinkage during curing. Minimum length shall be that which continuously spans distance from center of floor drain to center of next floor drain, cleanout, or intersecting pipe. Verify lengths in field before felt tube is cut and impregnated. Diameter of existing pipes may be larger than nominal inside diameter due to corrosion of pipe. Determine required diameter of liner.

2. Nominal wall thickness shall be at least calculated design thickness, or minimum specified.

H. Seal ends of CIPP liner where possible to prevent water from getting between liner and pipe.

2.03 MATERIALS

A. Use: Gravity floor drain piping.

B. Materials: Polyester or vinyl ester resin. Content shall be 6 to 8% by volume greater than volume of voids.

C. Tube material: Nonwoven, needled polyester felt formed into individual sheets of minimum thickness of 0.12” 0.12 inch. Tube shall be free from tears, holes, cuts, foreign materials and other surface defects.

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D. Sewn tube shall consist of 2 or more layers of absorbent nonwoven synthetic fiber combined with glass fiber reinforcement.

E. Fabricate liner to dimensions such that it will stretch to a size, when pressurized for curing, that allows it to cure while in contact with existing pipe.

F. Outside layer: Plastic coated with translucent flexible material to clearly allow inspection of resin impregnation (wet out) procedure.

G. Uniform thickness that when compressed at installation pressures will exceed minimum required thickness specified in design submittals.

H. Homogeneous across entire wall thickness containing no intermediate or encapsulated elastomeric layers.

I. Use polyester or vinyl ester resin system compatible with inversion or pull-in process. Resins shall be tinted for visibility and provide positive indication of adequate liner wet-out.

2.04 FINISH

A. Interior pipe surface of CIPP liner after installation shall be light reflective color so that clear detail examination may be made of final product with closed circuit television inspection equipment.

PART 3 EXECUTION

3.01 SITE VERIFICATION OF CONDITIONS

A. Prior to entering access areas and performing work, make evaluation of atmosphere to determine presence of toxic or flammable vapors. Perform in accordance with local, state, or federal safety regulations.

B. Clean and televise sewer.

1. Inspection of pipelines shall be performed by experienced personnel trained in locating breaks, obstacles and service connections using closed circuit television (CCTV) inspection techniques.

2. Pipeline interior shall be carefully inspected to determine location of conditions that may prevent proper installation of CIPP.

3. Determine active service connection locations.

4. Videotape and suitable written log for each line section shall be produced for later reference by Owner.

5. If pipe condition is such that lining cannot be performed, immediately notify Engineer and corrective action will be determined.

C. Examine tapes of condition of pipe interior before starting work.

3.02 PREPARATION

A. Prior to liner installation sufficiently clean debris from drain lines to provide for proper installation of product.

1. If offset joints or collapsed pipe sections are present that will prevent insertion of liner the

Point Repair bid item will be used to remedy these issues.

B. Flow control: Block off garage bays to prevent use of floor drains during lining operations.

C. Owner will provide water required for construction activities.

3.03 INSTALLATION

A. Owner will provide rights of access to pipeline. Number and location of access points required for installation of CIPP are shown on the attached figures.

B. Provide excavation, pipe work, reconnection and restoration for installation of access points if needed utilizing the Point Repair bid item.

C. CIPP installation process shall be equal to or exceed requirements of ASTM F1216 and ASTM

F1743.

1. Preparation of liner:

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a. Designate location where uncured resin in original containers and unimpregnated liner will be vacuum impregnated prior to installation. Allow Engineer to observe materials and "wet out" procedure.

b. Use resin and catalyst system compatible with requirements of this method.

Quantities of liquid thermosetting materials shall be to manufacturer's standards to provide lining thickness required.

c. Transport resin impregnated liner to site immediately prior to inversion in suitable lightproof container with temperature maintained below 40F (4C).

2. Insertion of liner:

a. Insert liner through existing floor drain or other access by means of inversion process and application of pressure head sufficient to fully extend liner to next designated termination point or by means of winching liner through the pipe to next designated termination point.

b. Lubricant may be used.

3. Curing liner:

a. After installation is complete, provide heat source and recirculation equipment capable of delivering hot water or steam throughout section to uniformly raise skin temperature above that which is required to effectively resize and cure liner.

b. Provide heat source with suitable monitors to gage temperature of incoming and outgoing inversion media. Place second gage between impregnated liner and pipe invert at termination point to determine temperatures during cure.

c. Initial cure shall be complete when inspection of exposed portions of liner to be hard and round and remote temperature sensor indicates that temperature has reached required levels.

d. Cool hardened liner to temperature below 100F (37.7C) by introduction of cool water or air into liner.

D. Reinstatement of service connections:

1. Reinstate and reconnect active service connections.

2. Reconnect wye/tee connections without excavation (if possible due to small diameter pipes) by television camera and cutting device that re-establishes services for minimum of 95% of flow capacity.

3. If remote reinstatement is not possible, the Point Repair bid item will be used to expose the pipe junctions and open the wyes/tees.

3.04 FIELD QUALITY CONTROL

A. Finished liner:

1. Liner shall be continuous over entire length of insertion run and be as free as commercially practicable from visual defects such as foreign inclusions, dry spots, pinholes and delaminations.

2. Liner shall conform to shape of pipe existing before installation and not be out of round.

B. Cured liner: Accurately measure. Liner shall be not more than 5% less than thickness specified.

C. Testing:

1. Test in accordance with ASTM D790.

2. Specimens tested shall be actual thickness of fabricated liner.

3. Do not machine specimen on surface.

4. Make test with smooth (inner) face in compression using 5 specimens.

3.05 INTERNAL TELEVISION INSPECTION

A. Perform internal television inspection of pipe lining after Work is complete.

B. Provide labor, equipment, and materials for internal inspection including televising and complete color video recording of all reaches of sewer.

C. Personnel and equipment:

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1. Provide a qualified technician, thoroughly experienced in televised inspection of sewer systems.

2. Equipment that does not give proper results shall be replaced at no cost to Owner.

D. Television camera:

1. Use television camera, monitor, and other components to provide clean, clear, and sharp picture.

2. Equipment shall be specifically designed and constructed for sewer inspection, including being operative in 100% humidity conditions.

3. Lighting for camera shall be suitable to allow clear picture for entire periphery of pipe.

E. Video delivery:

1. Provide complete color video of sewers inspected by televising. Recordings produced shall be compatible with Owner's video equipment. Video to be delivered digitally on a flash drive.

2. Produce video recordings of sufficient quality to allow proper in-house analysis of all data with minimum of distortion; no image tearing.

3. Provide viewing monitor to receive images from camera; provide associated photographic equipment to supplement monitor views with digital recordings.

4. Reference digital recordings on inspection log sheets specified hereinafter.

5. Provide voice narration on video footage to document following information:

a. Name of pipe segment on which television inspection was made.

b. Section of sewer inspected, including identification of entry and floor drains

c. Direction of viewing operation, such as: "Downstream to east from Inlet 1 to Inlet 2”

d. Pipe diameter in inches and rehabilitation method used.

e. Distance to each service connection from entry floor drain

f. Record footage from entry floor drain to position of camera.

g. Deliver video to Engineer who, after review, will deliver video to Owner for permanent records.

F. Inspection procedure:

1. Camera shall be moved at uniform rate not greater than 30' 9.84 yard per minute.

2. Take necessary steps and adopt procedures to ensure optimum viewing conditions.

G. Log sheets:

1. Complete log sheet for each section of pipe televised.

2. Include following information, as a minimum, on each log sheet:

a. City and state, street location, and floor drain/cleanout numbers.

b. Sewer diameter, sewer material, floor drain/cleanout numbers and distance between drain/cleanouts being televised.

c. Viewing direction and direction of flow.

d. Date of performance of Work.

e. Video identification number.

f. Footage, from entry drain/cleanout, and clock position of any defects.

g. Other points of significance, such as damaged joints and other unusual or discernible conditions.

h. Deliver copy of log sheets to Engineer who, after review, will deliver log sheets to

Owner for permanent records.

H. Replace any broken, cracked, or otherwise defectively lined pipe at no cost to Owner.

3.06 CLEANING AND RESTORATION

A. At completion of work, remove rubbish, debris, dirt, equipment and excess material from Site.

B. Clean and restore adjacent surfaces soiled by and during course of Work.

END OF SECTION