MANHOLE REPLACEMENT AND SANITARY SEWER REPAIR AT 4309 BUCHANAN STREET

MANHOLE REPLACEMENT

Remove existing Manhole No. 85 and replace with the new 4-foot diameter precast Manhole No. 85.

ALTERNATIVE 1: Pipe Bursting

Pipe burst existing 12-inch VCP pipe with new 12-inch-high density polyethylene (HDPE) pipe. New HDPE pipe shall be manufactured from a high density, high molecular weight polyethylene resin which conforms to ASTM D1248 and meets the requirements for Type III, Class A, Grade P34, Category 5, and has a Plastic Pipe Institute (PPI) rating of PE 3408 when compounded

ALTERNATIVE 2: CIPP Lining and Point Repair

• • CIPP line existing 12-inch diameter pipe x 313 linear feet starting from Manhole No. 85 to Manhole No. 91.oint repair existing 12-inch diameter pipe with 12-inch diameter PVC SDR 35 ± 14-linear feet from Manhole No. 85 going towards Manhole No. 86.  CIPP line existing 12-inch diameter pipe x 148 linear feet starting from Manhole No. 85 to Manhole No. 86

Background

SEE ATTACHED BID SPECIFICATION

Project Details

• Reference ID: 2026-RFP-038
• Department: Engineering
• Department Head: Jabez Anderson (Engineering Manager)

Important Dates

• Questions Due: 2026-04-17T19:00:00.000Z

Evaluation Criteria

• The Scope of Work shall include the following: —

  MANHOLE REPLACEMENT

  Remove existing Manhole No. 85 and replace with the new 4-foot diameter precast Manhole No. 85. Contractor shall field verify the elevations. Manhole shall be installed complete with approved rung ladder, casting, and cover. Cover shall be stamped “GARY SANITARY DISTRICT SANITARY SEWER” with 2” raised letter. The new manhole casting shall be flush with the ground provide all specified items in accordance with the specified directions below and all other applicable standards.

  • ALTERNATIVE 1: Pipe Bursting

  • Pipe burst existing 12-inch VCP pipe with new 12-inch high density polyethylene (HDPE) pipe. New HDPE pipe shall be manufactured from a high density, high molecular weight polyethylene resin which conforms to ASTM D1248 and meets the requirements for Type III, Class A, Grade P34, Category 5, and has a Plastic Pipe Institute (PPI) rating of PE 3408 when compounded. The pipe produced shall have a minimum cell classification of 345434D or 345434E under ASTM D3350.
  • The HDPE installed under this contract shall be a minimum DIPS SDR 17 and shall be capable of supporting the full-bearing load.
  •  Contractor shall submit thickness calculations for HDPE pipe.
  • Sections of HDPE shall be butt-fused in accordance with the HDPE manufacturer’s specifications.
  • Static pipe bursting shall be used to replace the existing 12-inch VCP. Pneumatic pipe bursting may be permitted with prior approval from the Engineer if site conditions require an alternative method. Equipment must be capable of fracturing the existing pipe and simultaneously installing the specified HDPE replacement pipe without disturbing grade or alignment.
  • Launch and reception pits shall be properly shored and sized to accommodate equipment and fused HDPE pipe.
  • Contractor shall monitor ground surface along bursting path for signs of uplift or heave during operation. Any heaving or displacement must be immediately reported to the Engineer.
  • Pipe shall extend 4-inch into manhole and must have a watertight connection with manhole. 

  ALTERNATIVE 2: CIPP Lining and Point Repair

  • Point repair existing 12-inch diameter pipe with 12-inch diameter PVC SDR 35 ± 14-linear feet from Manhole No. 85 going towards Manhole No. 86.
  • Contractor shall ensure pipe penetrations are sealed and watertight.
  • Contractor shall connect new pipe to existing good pipe with a watertight connection. Connect new pipe to existing PVC pipe with neoprene rubber coupling with stainless steel straps or coupling provided by the manufacturer and approved by the owner. When adjoining new pipe to existing, the maximum space between the abutting pipes shall be 1/8 inches or less. Any further space between pipes shall not be acceptable.
    • Submit pictures or request an inspection before and after installation of rubber coupling and manhole connections to the Gary Sanitary District for verification.
  • The minimum thickness of the cured liner must be 0.35 inches.
  • CIPP line existing 12-inch diameter pipe x 313 linear feet starting from Manhole No. 85 to Manhole No. 91.
  • CIPP line existing 12-inch diameter pipe x 148 linear feet starting from Manhole No. 85 to Manhole No. 86.
  • Clean and televise the sewer line prior to and after installation of the CIPP.
  • Remove all roots, protruding taps, and/or encrustation (if any) inside of the sewer line before lining installation.
  • The CIPP liner shall conform to the latest edition and revision of ASTM F1216, ASTM F1743, ASTM D790, and ASTM D638.
  • A sample of the CIPP liner must be provided to the Engineer for review.
  • Leakage testing of all finished CIPP-lined sewer mains shall be conducted prior to the reinstatement of service pipes and laterals in the presence of the Engineer and in accordance with an air or water test.  The Contractor shall furnish all equipment and personnel necessary to conduct all of the leakage tests.  Test shall not be paid for separately, but shall be included in the cost of pay items.  All gravity sewer pipes shall be tested for leakage in accordance with 327 IAC 3-6-19(d). 
  • Contractor shall submit a copy of all boiler logs to Engineer upon completion of project.
  • The CIPP liner shall extend 4-inches into existing manholes.
  • Reinstate and grout all active house laterals including drainage pipes that are affected.  The cost to be included in the price of the lump sum work. The openings of the reinstated laterals shall be smooth and free of jagged edges and shavings.
  • Contractor shall ensure a watertight connect between host pipe and new pipe by using rubber gasket at pipe ends.
• Minimum Technical Requirements: —

  (provide detail here)

Submission Requirements

• I hereby certify that I have examined and carefully prepared this proposal based on all of the above information and I am authorized to submit this proposal and accept the terms and conditions of the Contract Agreement. (required)
• Contractor Compliance Requirements (required) —

  Please download the below documents, complete, and upload.

• Additional Documents: —

  If applicable

• What is the project location and address? (required)
• Are Contractor Compliance Requirements needed? (required)
• Is the insurance section required? (required)