Addendum Three.pdf

COMMONWEALTH OF KENTUCKY

DEPARTMENT FOR FACILITIES AND SUPPORT SERVICES

DIVISION OF ENGINEERING AND CONTRACT ADMINISTRATION

INVITATION TO BID NO: RFB-202-25

FOR: Re-Ad of RFB-38-25 Nursing Facility Renovations Western State Hospital Cabinet for Health and Family Services Hopkinsville, Kentucky

DATE: April 16, 2025

RFB-785-2500000553

ADDENDUM NO. Three (3)

BIDDER SHALL CONFORM TO THE FOLLOWING CHANGES AS SAME SHALL BECOME BINDING

UPON THE CONTRACT TO BE ISSUED IN RESPONSE TO THIS INVITATION TO BID.

Item 1: Refer to addendum to be distributed by Lynn Imaging for all additions, deletions, and/or changes to specifications and/or drawings.

END OF ADDENDUM

Invitation to Bid No. RFB-202-25 For: Re-Ad of RFB-38-25 Nursing Facility Renovations Western State Hospital Cabinet for Health and Family Services Hopkinsville, Kentucky

Susan Ward, Statewide Procurement Analyst II Division of Engineering and Contract Administration

NURSING FACILITY RENOVATIONS

WESTERN STATE HOSPITAL

HOPKINSVILLE, KENTUCKY

ACCOUNT NO. 729-CAKQ-WN05-00

MARCUM NO. 23583

ADDENDUM 3.00

APRIL 16, 2024

The following Addendum Items shall be made part of the Contract Documents for the referenced project.

3.01 Refer to Section 10000.6. The Contractor shall provide temporary heating to maintain freeze protection throughout Building 30 and 31. Temporary heating shall be provided in Building 32 during the construction period if the alternate is accepted. Existing dual temperature system shall remain operational for Building

33 throughout the duration of the project.

3.02 Refer to Section 10000.6. The Contractor shall provide minimal temporary cooling to maintain 82°F in Buildings 30 and 31. Temporary cooling shall be provided in Building 32 during the construction period if the alternate is accepted.

Additionally, dehumidifiers to maintain a RH below 65% in the building are required during construction to protect existing casework and other building materials subject to damage.

3.03 Refer to Section 232113.3.01.B.1. Condenser water piping NPS 2-1/2 and larger shall be Schedule 10 steel pipe in lieu of Schedule 40 noted. Where piping is installed in the chiller plant, refer to Drawing H2.1, piping shall remain Schedule

40.

3.04 Refer to attached Section 232114 – Underground Hydronic Pipe and Fittings.

This Section shall be added to the Contract Documents.

3.05 Refer to Section 235216 and Drawing H0.1. – Condensing Boiler Schedule.

Revise references to stainless steel material to be 439 stainless steel.

3.06 Refer to Drawing H2.1 – Chiller Plant Roof Plan. The existing steam piping and condensate return piping connections are at the basin of the existing cooling tower. All condensate and steam control devices, traps, etc. are existing and located below the cooling tower in the Chiller Plant. Connect to existing 2” piping connections at the basin that were previously removed.

Attachments:

1. Section 232114

END OF ADDENDUM 3.00

UNDERGROUND HYDRONIC PIPE AND FITTINGS 232114-1

SECTION 232114 - UNDERGROUND HYDRONIC PIPE AND FITTINGS

PART 1 - GENERAL

1.01 SECTION INCLUDES

A. Extent of pipe and fittings required by this Section is indicated on drawings and/or specified herein.

B. Types of pipe and fittings specified in this Section include the following:

1. Piping Materials:

a. Pre-insulated steel piping system.

2. Pipe Fittings:

a. Pre-insulated steel fittings to match pipe.

1.02 QUALITY ASSURANCE

A. Manufacturers: Firms regularly engaged in manufacture of pipe and fittings of types and sizes required, whose products have been in satisfactory use in similar service for not less than 3 years.

B. All materials and installation shall be in conformance with the following:

1. Kentucky Boiler Code

2. ANSI B31.1 "Power Piping".

3. ANSI B31.9 "Building Service Piping".

C. Acceptable Manufacturers:

1. Thermal Pipe Systems, Inc.

2. Tricon.

3. Approved equal.

1.03 SUBMITTALS

A. Product Data: Submit catalog cuts, specifications, installation instructions, and dimensioned drawings.

1.04 DELIVERY, STORAGE, AND HANDLING

A. Where possible, store materials inside and protected from weather. Where outside storage is necessary, elevate above grade and protect from blowing dirt, sand and prolonged UV exposure.

B. Protect flanges and fittings from moisture and dirt by inside storage and enclosure or by packaging with durable, waterproof wrapping.

PART 2 - PRODUCTS

2.01 PRE-INSULATED GASKETED STEEL PIPING SYSTEM

A. Piping: Steel pre-insulated pipe shall be used for chilled water service. The pipe shall be joined with mechanical couplings which seal by compression gaskets. Unless otherwise specified, all pipe, fittings, valves, and accessories shall conform to the requirements of ANSI B31.1 and shall be of the proper type for the pressure and temperature of the service.

B. Steel Carrier Pipe and Fittings:

UNDERGROUND HYDRONIC PIPE AND FITTINGS 232114-2

1. Carrier pipe shall be black steel pipe conforming to ASTM A53 Seamless Schedule 80 Standard Weight Grade B. The spigot ends shall be sand blasted and factory coated for corrosion protection.

2. Mechanical couplings shall be ductile iron.

The ductile iron coupling shall be Grade 65-45-12 in accordance with ASTM A-536. The coupling shall have a deep bell push-on configuration with sealing rings meeting ASTM F-477.

The length of the coupling shall be such that, when correctly assembled, it will give the proper end separation. Sealing rings shall be EPDM rubber and supplied by the coupling manufacturer. Sealing rings shall be suitable for continuous service of 250ºF and 150 psig.

The coupling shall be factory insulated using the same casing and insulation as the straight lengths of pipe. The butt seam between pipe lengths and the coupling shall be sealed after testing with 50 mil thick shrink wrap heat applied closures.

3. Fittings shall be insulated.

Fittings shall be pre-insulated by the pipe manufacturer using the same insulation thickness and casing as the pipe. Where necessary laid-up fiberglass casing may be substituted on all or part of the fitting and shall structurally match the casing of the pipe. A thrust plate of the proper size shall be provided when required by the design and shall be an integral part of the fitting. Field applied thrust plates shall not be allowed except by special approval of the engineer. End seals on fittings shall be the same as used on the pipe.

4. Flanges shall be ANSI B16.5 class 150. Gaskets shall be full face 1/8" thick with a durometer rating of 60-70. Bolts, nuts, and washers shall conform to ASTM A-193 and A- 194.

C. Casing Pipe: Casing for the pre-insulated pipe system shall be HDPE.

High Density Polyethylene (HDPE) casing shall be seamless conforming to ASTM D1248, Type III, Grade P34. The thickness shall be defined by a minimum 1% of its nominal diameter but not less than 150 mils. For example, a 12" pipe cased in a 16" jacket with thickness requirement 16 mils/diameter inch or 1% all result in a thickness of 0.160". Casing for couplings shall match that of the pipe. Joint closure shall be sealed with heat shrinkable adhesive backed sleeve fabricated from thermally stabilized radiation crosslinked and ultraviolet resistant polyethylene outer layer and high temperature resistant mastic inner layer. The sleeve shall have a minimum tensile strength of 2400 psi per ASTM D412 and shore hardness between 40 and 60 "D" scale per ASTM D.2240.

1. The HDPE casing-foam system shall be suitable for H-20 highway loading with two feet of cover providing that the pipe bedding and backfill material are properly placed and compacted to H-20 specifications.

D. End Seals: End seals for pre-insulated steel pipe shall be certified to resist infiltration of water at 20 feet of head at the intended operating temperature. Mastic end seals which may meet the requirements of the 20 foot test shall not be allowed.

E. Insulation: Insulation shall be polyurethane closed cell foam, completely encapsulated on each end by a compression rubber end seal.

1. Polyurethane foam insulation shall meet the following specifications:

Type: Two component urethane Compressive Strength: 35 psi parallel min at 5% comp.

Shrinkage: None at 70ºF Free Rise Density: 2.0 to 3.0 lbs/cubic foot Aged "K" (70ºF - 72 hrs) 0.160 BTU-in/hr-ft²-ºF

UNDERGROUND HYDRONIC PIPE AND FITTINGS 232114-3

Closed Cell Content: 90% Thickness 2-inches

3. Insulation concentricity: Carrier pipe shall be concentric to casing pipe. The allowable maximum deviation from center line of carrier pipe shall be plus or minus 1/4 inch at the casing center point and plus or minus 1/16 inch at the end seals.

F. Wall Penetration Sleeves: Provide wall penetration sleeves where piping passes through masonry or concrete walls. Sleeves in outside walls below and above grade shall be schedule 40 or standard weight coated black steel pipe. Sleeves shall be held securely in proper position and location during construction. Sleeves shall be of sufficient length to pass through entire thickness of walls or slabs. Refer to typical detail of wall penetration as shown. In existing concrete manholes or building walls, penetrations may be made using the "core drilling" method, providing proper care is taken to drill the holes to the size needed and square to the line of the pipe.

PART 3 - EXECUTION

3.01 GENERAL

A. Installation of the piping system shall be done in accordance with the appropriate publications including ANSI B31.1 and the following specifications and instructions.

B. Factory furnished lengths of pipe shall be utilized to the maximum extent. Field cutting of pipe shall be kept to a minimum. Pipe shall be worked into place without springing or forcing, properly clearing all openings and equipment. Pipe ends shall have burrs removed by reaming and shall be installed to permit free expansion and contraction without damage to joints. Good workmanlike procedures shall be followed.

C. Open ends of pipe lines and equipment shall be properly capped or plugged during installation to keep dirt or other foreign matter out of the system.

3.07 BEDDING

A. Bedding material shall be sand, pea gravel, or other materials free of sharp objects, heavy clods, boulders, or frozen lumps. The approved bedding shall be used 6" under, around and over the pipe. Utilize the best professional practices that apply to buried pressure piping.

3.08 ASSEMBLY OF PIPE AND FITTINGS

A. Pipe and fittings shall be assembled in strict accordance with the manufacturer's requirements.

3.09 TESTING

A. Testing shall be performed and system proven tight before closure of insulated field joints or backfilling. Prior to testing, flush pipe system with fresh water until piping is free of dirt and foreign matter. Use only fresh water for field tests. Air must be removed from system before starting tests.

A hydrostatic test of 150 psi or 1 1/2 times working pressure, which ever is greater, shall be placed on the system for a period of two hours.

B. During pressure testing, examine system for leaks. Repair joint leaks, replace damaged or porous pipe and fittings, and repeat all tests until satisfactory tests are achieved.

END OF SECTION 232114