Addendum No 2.pdf

COMMONWEALTH OF KENTUCKY

DEPARTMENT FOR FACILITIES AND SUPPORT SERVICES

DIVISION OF ENGINEERING AND CONTRACT ADMINISTRATION

INVITATION TO BID NO: RFB-79-26

FOR: HVAC Upgrades EDU - KY School for the Deaf - Kerr Hall Danville, Kentucky

DATE: October 2, 2025

RFB-785-2600000122

ADDENDUM NO. Two (2)

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: Change Official Bid Opening date to October 14, 2025, at 1:30 PM ET. All other bidding information will remain the same.

Item 1: Refer to attached addenda for all additions, deletions, and/or changes to specifications and/or drawings.

END OF ADDENDUM

Invitation to Bid No. RFB-79-26 For: HVAC Upgrades EDU - KY School for the Deaf - Kerr Hall Danville, Kentucky

Kristi Sharp, Statewide Procurement Manager Division of Engineering and Contract Administration

Kentucky School For The Deaf – Kerr Hall Renovation Project

Addendum #2

Kentucky School For The Deaf – Kerr Hall Renovation Project

Renovation Project Number 540CBXLSD6301

Addendum #2

CHANGES TO DRAWINGS:

Electrical

Sheet # Sheet Title Noted Update

E001 ELECTRICAL LEGEND AND GENERAL

NOTES

1. Symbols added for Intruder and Weather Strobes.

E100 LOWER LEVEL ELECTRICAL

DEMOLITION

1. Added general notes “N” and “O”.

2. Added photo from the field indicating electrical equipment to be relocated.

3. Added keynote ED4 and edited other keynotes.

E101 MAIN LEVEL ELEC DEMO 1. Added general notes “N” and “O”.

2. Changed existing downlights to be demolished and replaced with new.

3. Added keynote ED4 and edited other keynotes.

E102 ROOF PLAN – ELEC DEMO 1. Added general notes “N” and “O”.

2. Added Keynote ED1 to Mech equipment.

E200 LOWER LEVEL LIGHTING 1. Added key switches to restrooms 115 and

116.

2. Added daylight dimming zones and photocell sensors where applicable.

3. Lighting controls added to Records 232.

4. Light fixture added in Janitor 237.

E201 MAIN LEVEL LIGHTING 1. Added key switches to restrooms 235 and 236.

2. Changed switches in offices to type “LV1”.

3. Added daylight dimming zones and photocell sensors where applicable.

4. Added occupancy sensors and control zones in common areas / corridors.

5. Added switch control and zone indication in lobby.

E300 LOWER LEVEL POWER/SYSTEMS 1. Added keynote “E4”.

2. J-Hook pathway added.

3. FA devices added to Classroom 110.

E301 MAIN LEVEL POWER/SYSTEMS 1. New FACP located in Telecomm. 215.

2. Smoke Detector in Vestibule 241 moved closed to FAA.

3. FA devices added to corridor.

E402 ELECTRICAL POWER RISER

DIAGRAM – NEW WORK

1. Edited power riser diagram keynote “1” to change the amount of spare breakers.

Renovation Project Number 540CBXLSD6301

Addendum #2

Kentucky School For The Deaf – Kerr Hall Renovation Project

Addendum #2

2. Edited “POWER RISER DIAGRAM FEEDER

SCHEDULE”.

3. Keynote “J” applied to riser.

4. Existing Emergency distribution equipment being relocated shall be provided with new feeders.

E403 PANELBOARD SCHEDULES 1. Existing to remain panels “E” and “EL” edited.

E601 ELECTRICAL DETAILS 1. Added detail #8, “TRANSFORMER (DRY-

TYPE) GROUNDING DETAIL”.

E603 KERR HALL – LIGHT FIXTURE SCHEDULE

AND DETAILS

1. Added detail illustrating switch type “LV, LV1, and LV2” and their manufacturer.

2. Detail added for J-Hooks pathways, CHANGES TO SPECIFICATIONS:

• 075250 – Modified Bituminous Sheet Roofing (SBS) o Clarified roof installer as Deer Park

• 232113 – Hydronic Piping o Clarified hydronic piping materials for 4-pipe system

• 283200 - Addressable Fire Alarm System – Voice o Spec modified to replace existing Fire Alarm complete and to be apart of the base bid.

CONTRACTOR RFIs:

1) In the special conditions of the specs, section 4: Times of Completion, is says construction activities may begin on 6/1/2026 with a substantial completion of 8/5/26 and final completion is

8/12/26. Typically on a school renovation work will begin on night or weekend shifts months prior to summer break to allow contractors to get piping and conduit work in place ahead of time. Or exterior underground work could be installed. With only 9 ½ weeks from start to substantial completion I don’t think the MEP contractors will have enough time to perform all the work in this project. I understand the facility has to be used for education of the student until the end of the school year but there should be opportunities for work to take place over Christmas break, spring break, weekends, or other periods the students are not inside the building. Could some type of plan be discussed or incorporated prior to the bid date? Or would this just have to be figured out once the low bidder is awarded? Once the low bidder is awarded, it is up to the general contractor to address scheduling in regard to substantial completion for the project.

2) I was checking to see if your company is looking after the rooftop equipment or if that would be the responsibility of the HVAC/mechanical sub at time of award? The scope of work to handle the rooftop equipment is to be handled through the contractor that is bidding and awarded the project.

3) Do the existing concrete housekeeping pads under the air handlers need to be demoed? Hex note D19 only called out on 1 pad. Does AHU 1 need a new concrete pad? The concrete pads on

Renovation Project Number 540CBXLSD6301

Addendum #2

Kentucky School For The Deaf – Kerr Hall Renovation Project

Addendum #2 the west side of the mechanical room will need to be demoed. The concrete pad on the east side of the mechanical room is to remain as new boilers will sit upon the existing pad. A new concrete pad will be needed for AHU-1.

4) Can you confirm if this verbiage from the special conditions is correct. The verbiage below does not apply to Kerr Hall.

• Can you provide the subcontractor that holds the roof warranty per sheet A-108K? Deerpark is the roofing contractor that did upgrades in 2023 and current basis of contact.

• Will Temporary Heat Detectors be required where ceilings are removed? Smoke detectors will be required where ceilings are to be removed.

5) Will any new reflective ceiling plans be issued to reflect what actually needs to be removed and replaced? Or do we just need to make our best guess? Any acoustical ceiling guys or demo contractors who only bid off the drawings will get it wrong. Where mechanical and electrical demolition and new work is to occur, the ceiling demolition and new work is to accommodate the mechanical and electrical scope of work. A conformed set will be issued to accurately represent the reflective ceiling plans.

6) On page 394 of the download (specs and plans), it is called out in the Hydronic Piping section for a “Heat Pump Loop Piping” of PE pipe with copper runouts or Installation Ready ™ fittings. I typically see this in something utilizing a geo loop, but I see no geo loop on this project. I just wanted to make sure that this isn’t intended for use with the 4-pipe system you seem to show on the plans and that the Vic/Copper mains and Copper/Threaded runouts are what is intended.

There is no geothermal loop on this project. The hydronic piping section has been revised to reflect 4-pipe system loop.

7) Spec section 28 FA 1.2 B says that system and equipment programming shall be priced as an allowance to the contract. The special conditions section 8 allowances says N/A. Please clarify if

JCI needs to provide an allowance cost or how to properly bid. This section in 283200 -

Addressable Fire Alarm System – Voice has been omitted and does not apply.

8) Contractors are to refer to the “or equal” clause in the general conditions for approved manufacturers in regards to all disciplines for selections.

Addendum #2

Kentucky School For The Deaf – Kerr Hall Renovation Project

Renovation Project Number 540CBXLSD6301

Addendum #2

ATTACHMENT(S):

• Electrical Drawings as listed above

• Specification sections as listed above

• Architectural Narrative

• Deer Park Roof Scope of Work

END OF ADDENDUM #2

s t u d i o k r e m e r a r c h i t e c t s

1231 S Shelby St, Louisville, KY 40203

TEL 502.499.1100 FAX 502.499.1101

A D D E N D U M N O . 2

TO: All Plan Holders

FROM: Studio Kremer Architects

PROJECT: KSD Kerr Hall ACCT.: 540CBXLSD6301 | ska# 2023-33.6

This Addendum No.2 supersedes and supplements all portions of the Construction Documents with which it conflicts. Acknowledgement of this Addendum shall be noted on the Form of Proposal.

Addendum No.2 makes the following modifications and clarifications to the Construction Drawings and Specification

Item No.1: DELETED

Item No.2: Reference Drawings: A104K, A105K, A106K, and A107K

1. REVISE ceiling in rooms 123, 213, 219, and 224 to be demo’d COMPLETE and Replace in kind.

Item No.3: Reference Plan Sheet: A104K and A105K

1. REVISE Keynote 3.4 to read:

“COORDINATE ABOVE CEILING WORK ABOVE EXISTING ACT CEILING. DEMO CEILING BACK TO NEAREST MAIN AS NEEDED TO PERFORM MEP WORK ABOVE. REPLACE ACT TILE AND GRID IN THIS AREA ONCE WORK

IS COMPLETE.

2. REVISE the following rooms are to be marked with Keynote 3.4: 204, 206, 207, 208, 209, and 210.

END OF ADDENDUM NO.2

(referenced attachments follow)

Deer Park Roofing 2601 Grassland Dr.

Louisville, KY 40299

Phone: 502-636-0621 Cell: 502-528-1156 awheat@deerparkroofing.com www.deerparkroofing.com www.roofadvantage360.com

Allowance September 17, 2025

ATTN: To whom it may concern, RE: Kentucky School For The Deaf (KSD) Kerr Hall

Deer Park Roofing will supply all needed labor, materials, supervision, equipment, and safety to accomplish the following scope of work.

1. Furnish and patch as necessary where equipment has been removed.

2. Flash 24x28 new penetrations.

3. Flash new 30x28 penetration.

4. Flash at new CUS.

5. All work to be completed according to manufacturer’s specifications and details.

6. Provide owner with a two (2) year workmanship warranty.

7. Maintain orderly jobsite and thoroughly clean upon completion.

Price for scope of work outlined above…..$50,000

Asher Wheat Commercial Estimator

APatel Rectangle

Kentucky School for the Deaf – HVAC Renovations

Kerr Hall

CMTA Project: VKYS23

07 52 50 - 1 Modified Bituminous Sheet Roofing

SECTION 07 52 50 – MODIFIED BITUMINOUS SHEET ROOFING (SBS)

PART 1 GENERAL

1.01 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and

Division 01 Specification Sections, apply to this Section.

B. Refer to the Drawings for locations of work to be performed.

1.02 DESCRIPTION OF THE WORK

A. Extent of modified bituminous sheet roofing system work is indicated on the Drawings and by provisions of this Section and is defined to include modified bituminous sheet with mineral granule surfacing over a modified base sheet, compositions flashing and stripping, and roofing accessories integrally related to the roof installation.

1. This specification is detailed and includes many elements primarily for repair, flashing of any new penetrations, and modifications of existing conditions that may be required by the Work indicated. Many elements of this specification may not be used.

2. The only known scope of work related to this specification section includes patching and the remedial flashing of curbs and new penetrations.

B. Miscellaneous work including blocking, nailers, cants, expansion joints and covers, fasteners, anchors, and accessories as detailed or noted on the Drawings or in the Specifications.

1.03 QUALITY ASSURANCE

A. Manufacturer Qualifications: Provide products that will be acceptable to the manufacturer and installer that hold the current warranties.

B. Contract Qualifications: Roofing Contractor Company submitting a bid shall have been in continuous operation under that company’s name for a period of not less than five (5) years.

C. Installer Qualifications: A single Installer (“Roofer”) shall perform the Work of this Section and shall be a firm with not less than five (5) years of successful experience in installation of roofing systems similar to those required for this Project.

1.04 SUBMITTALS

A. General: Submit the following according to Conditions of the Contract and Division 01 Specification

Sections.

B. Product data for each type of product specified. Include data substantiating that materials comply with requirements.

C. Installer Certification: Submit written certification for manufacturer of modified bituminous sheet roofing system certifying that Installer is approved by manufacturer to install specified roofing system. Provide copy of certification to Architect before award of the roofing work.

CMTA Project: VKYS23

07 52 50 - 2 Modified Bituminous Sheet Roofing

1.05 JOB CONDITIONS

A. Weather Condition Limitations: Proceed with roofing work only when existing and forecasted weather conditions will permit work to be performed in accordance with manufacturer’s recommendations and warranty requirements.

1.06 PRODUCT HANDLING

A. Deliver roofing materials in manufacturer’s original protective containers with labels intact and legible.

Comply with manufacturer’s published instruction for storage and handling.

B. Store materials in dry protected areas, on clean, raised platforms covered with tarps, securely anchored. Do not store any material, equipment or debris on existing or finished roof areas.

C. Store roofing materials at a minimum of forty-five (45) degrees F prior to use, as recommended by the manufacturer. Protect materials from freezing.

1.07 ROOFING APPLICATOR’S GUARANTEE / MANUFACTURER’S WARRANTY

A. The installer shall take all precautions to protect the existing warranties on the recently-installed roof.

B. All contractors on the project shall protect the roof from damage from activities involved in the work of this project. Mechanical system installations require a significant amount of traffic on the roof and it is expected that these activities will not degrade the existing roofing materials. Protect against wear, compression from heavy loads, and disbursement of surface granules by installing necessary protections.

C. Contact warranty holders before job to alert them to work occurring, verify the nature of the activities to be performed, learn of any requirements to which the project will be held in order to protect warranties, and follow up with warranty holders at end of project to verify that these conditions have all been met.

1. Installer for the existing roof, who maintains existing installation warranty:

Geoghegan Roofing, Contact: Greg McNamara (Project Manager), 502-585-4313, gmcnamara@goroof.com. Deer Park Roofing, Contact: Asher Wheat, 502- 528-1156, awheat@deerparkroofing.com

2. Manufacturer of the existing roof, which maintains the existing manufacturer warranty:

Soprema Roofing, Contact: Pat Dorsey, 502-334-8193

PART 2 PRODUCTS

2.01 MANUFACTURERS

A. Manufacturers: Provide products by one of the following:

1. SBS-Modified Bituminous Cap Sheet:

a. Soprema Roofing Elastophene HS FR GR

b. Certainteed Flintlastic Premium FR-P

c. Firestone SBS Premium FR

d. Johns-Mansville Dynakap FR

e. Siplast Paradiene 30HTFR

2. SBS-Modified Bituminous Base Sheet:

a. Soprema Roofing Sopralene 180 SP, 3.5mm

b. Certainteed Ultra Poly SMS

07 52 50 - 3 Modified Bituminous Sheet Roofing

c. Firestone SBS Base

d. Johns-Mansville Dyna Base

e. Siplast Paradiene 20

3. SBS-Modified Bituminous Aluminum-Clad Base Flashing:

a. Soprema Roofing Sopralast 50TV, ALU

b. Firestone SBS Flash-AL

c. Johns-Mansville DynaClad, Aluminum

d. Siplast Veral Aluminum

4. SEBS-Modified Bitumen Mastic:

a. Soprema Roofing Soprema / Kraton-G 1650 (Shell)

b. Barrett Ram-Tough KLB-100

c. Johns-Mansville KLB-100; (Barrett)

d. Mid-States Asphalt Premium SEBS Elastomeric Asphalt

e. Siplast PA-1000

5. Steep Asphalt Bitumen Mastic (Type III):

a. as recommended by system manufacturer

6. Perlite Insulation, Tapered Insulation (as noted) and Cant Strips:

a. International Permalite

b. Johns-Mansville

c. Certainteed

2.04 MODIFIED BITUMINOUS CAP SHEET

A. SBS-Modified Bituminous Sheet, Mineral-Granule Surfaced: SBS-modified asphalt sheet, with continuous layer of mineral granules, factory applied to top exposed surface, meeting the requirement of ASTM D

6162, Type 1, Grade G: suitable for application method specified; manufacturer’s standard thickness and weight; for use and of reinforcing type and granule color as follows:

1. Use: Finish ply and base flashing

2. Reinforcing: Polyester and fiberglass composite material

3. Granule color: Match existing

B. Physical Properties: Provide SBS-(Styrene-Butadiene-Styrene) Modified Bituminous membrane materials within the following property ranges when tested according to ASTM D 5147:

1. Thickness: 150-160 mils minimum

Selvage Thickness: 136-150 mils minimum average

2. Tensile Strength at 0 F:

MD : 135 lbf/in.- 160 lbf/in.

XMD: 95 lbf/in.- 122 lbf/in.

3. Weight per sq. ft.: 1.03 lbs. - 1.15 lbs.

4. Elongation at max. 0 F load:

MD : 4%

XMD: 4%

5. Tensile Tear Strength: 100 lbf. - 160 lbf.

6. Ultimate Elongation at 73 F: Greater than 70%

7. Reinforcement Mat: Polyester and fiberglass composite

07 52 50 - 4 Modified Bituminous Sheet Roofing

8. Water Absorption: Less than 0.2 percent mass change

9. Low-Temperature Flexibility: Pass at minus 4 F - minus 15 F

10. Compound Stability: Not less than 220 F

11. Dimensional Stability: Maximum 1.0%

12. Average Granule Embedment: 1.5 grams maximum loss

2.05 SBS-MODIFIED BITUMINOUS BASE SHEET

A. SBS-Modified Bituminous Base Sheet: SBS-modified asphalt sheet, meeting the requirement of ASTM D

6163, Type 1, Grade S, suitable for application method specified; manufacturer’s standard thickness and weight; for use and of reinforcing type as follows:

1. Use: Finish Ply Base Sheet

2. Reinforcing: Fiberglass Mat

B. Physical Properties: Provide SBS-(Styrene-Butadiene-Styrene) Modified Bituminous membrane materials

1. Thickness: 85 mils (.090 inches)

2. Tensile Strength at 0 F:

MD : 90 lbf/in.

XMD: 70 lbf/in.

3. Weight per sq. ft.: 1.66 lbs.

4. Elongation at max. 0 F load:

MD : 4%

XMD: 4%

5. Tensile Tear Strength:

MD : 100 lb / in

XMD: 90 lb / in

6. Reinforcement Mat: Fiberglass Mat

7. Low-Temperature Flexibility: Pass at minus 4 F - minus 15 F

8. Dimensional Stability: Maximum .20%

2.06 SBS-MODIFIED ALUMINUM CLAD BASE FLASHING

A. SBS-Modified Bituminous Aluminum Clad Base Flash Sheet: Aluminum foil facing, high performance, foil clad SBS-modified bitumen finish ply, with fiberglass scrim / fiberglass mat composition impregnated and coated with high quality Styrene-Butadiene-Styrene (SBS) modified bitumen and top surfaced with an embossed protective aluminum foil facing, meeting the requirements of ASTM D 6295. Backing surface of silica parting agent or plastic / polyolefin film.

1. Use: Finish Ply Base Flashing

2. Reinforcing: Polyester or fiberglass scrim / fiberglass mat

3. Application : Torch-applied over hot-mopped SEBS reinforcing ply base sheet.

4. Finish color: Natural embossed aluminum foil

B. Physical Properties: Provide SBS-(Styrene-Butadiene-Styrene) Modified Bituminous membrane materials

1. Thickness: 138-168 mils

2. Average weight per square: 90 - 101 lbs.

3. Approvals: UL approved / FM approved

(products shall bear seals of approval)

4. Elongation at 0 and 73 F:

07 52 50 - 5 Modified Bituminous Sheet Roofing

MD and XMD 4%

5. Tensile Tear Strength:

MD and XMD 185 lbs/in.

6. Low-Temperature Flexibility: 0 degrees F

7. Compound Stability: 230 degrees F

8. Dimension Stability:

MD and XMD 0.2%

9. Water Absorption: 2%

10. Surfacing: Natural finish embossed aluminum metal foil

11. Underlayment / Reinforcing: As recommended by base flash manufacturer

2.07 SEBS MODIFIED BITUMEN

A. SEBS-Modified Bitumen: Modified asphalt with SEBS Thermoplastic / Rubber Polymer Matrix by high-speed blending with selected straight-run, unblown, unoxidized asphalt bitumen, specifically formulated for use with conventional roofing kettles for use as an interplay mopping adhesive for roof slopes 1/4” per foot and under.

1. Use: Interply Mopping Adhesive

2. Composition: Styrene-Ethylene-Butadiene-Styrene

3. Volatile Organic Compound: 0.0 g / L

B. Physical Properties: Provide SEBS Modified Bituminous Mastic membrane materials within the following physical properties when tested according to ASTM D 6152 and as noted below:

1. Softening Point: ASTM D-36 195 F - 205 F

2. Flash Point: ASTM D-92 525 F minimum

3. Viscosity at 450 F: ASTM D-3236 75 - 250 cp minimum

4. Penetration at 77 F: ASTM D-5-85 30 - 70 dmm

5. Elongation at 77 F: ASTM D-412-87 1000% minimum

6. Equiviscous Temp.: ASTM D-4402-87 425 F - 450 F

7. Application Temp.: n/a 350 F - 475 F

8. Density at 75 F: ASTM D-7082-86 8.3 lb. / gal

9. Heat Resistance

Penetration at 77 F: ASTM D-5 25 - 70 dmm

10. Ductility: ASTM D-113 30 - 45 cm

11. Ambient Temp. Range for Field Application: n/a 32 F minimum

12. Maximum Kettle Temp.: 500 F

2.08 AUXILIARY MEMBRANE MATERIALS

A. General: Furnish auxiliary materials recommended by the roofing system manufacturer for intended use and compatible with SBS and SEBS Modified Bituminous Roofing Products and System.

1. Furnish liquid-type auxiliary materials that meet VOC limits of authorities having jurisdiction.

2. Label each container or provide certification with each load of bulk asphalt identifying type of roofing asphalt and indicating softening point, minimum flash point, equiviscous temperature and finished blowing temperature.

B. Asphalt Primer: Quick Drying Asphalt cut-back Primer complying with ASTM D-41.

C. Insulation Adhesive: Roofing per ASTM D-312, Type III

1. Softening Point: ASTM D-36-86 195 F - 205 F

07 52 50 - 6 Modified Bituminous Sheet Roofing

2. Penetration at 77 F: ASTM D-5-86 15 - 30

3. Flash Point, minimum ASTM D-92-85 540 F

4. Ductility at 77 F minimum: ASTM D-113-86 3.2 cm

5. Equiviscous Temp. Range: ASTM D-4402-87 410 F +/- 25%

D. Asphalt Roofing Cement: ASTM D-2823, ASTM D-4586, Type I, asbestos free, of consistency required by roofing system manufacturer for application.

1. Asbestos Content: ASTM D-276-87 none

2. Viscosity at 77 F: ASTM D-2196-86 480 - 1000 Pa

3. Density at 77 F: ASTM D-1475-85 9.3 lb. / gal.

4. Non-Volatile Matter

Behavior at 140 F: ASTM D-4586-86 1/8”

5. Moisture Vapor

Transmission Rate: ASTM D-398-83 2 - 6 g/m

E. Mastic Sealant: Polyisobutylene, plain or modified bituminous, non-hardening, non-migrating, non-skinning and non-drying (MBR cement).

F. Roofing Granules: Ceramic-coated roofing granules, No.11 screen size with 100-percent passing No.8 sieve and 98-percent of mass retained on No.40 sieve.

1. Color: Match existing

G. Miscellaneous Accessories: Provide miscellaneous accessories recommended by roofing system manufacturer for intended use.

2.09 MISCELLANEOUS MATERIALS

A. Wood Members, Units: Provide kiln dried wood (after treatment), pressure treated with water-bourne preservatives for above ground use (AWPB LP-2).

B. Cants: Wood fiberboard, ASTM C-208 or perlite.

C. MBR Flashing Cement: ASTM D-4586, type as required.

D. Fibrated Aluminum Roof Coating: ASTM D-2824, Type II, Non-Asbestos.

E. Glass Fiber Fabric: 1.52 lb. (min) sheet, of woven glass fiber, impregnated with asphalt (ASTM D-1668) or asphalt saturated cotton members.

F. Lead Flashing: 2-1/2” lb. to 4 lb. sheet of common desilverized pig lead.

G. Walkway Protection: Provide Modified Bituminous finish ply with granular surface with same color as roof surface, min. 5/16” thick, 32” x 32” or black rubber type.

H. Asphaltic Primer: Comply with ASTM D-41.

I. Fasteners: Provide industry-standard types of mechanical fasteners for Modified Bituminous Sheet Roofing

System work, tested by manufacturer for required pull-out strength where applicable and compatible with deck type and roofing products used. Conform to Factory Mutual No.4470.

J. Termination Bar: Continuous flat metal bar, 1/8” thick by 1-inch wide, aluminum bar with pre-drilled holes at 8” o.c. Install bar with drive pins at masonry walls and screws at ICF walls.

07 52 50 - 7 Modified Bituminous Sheet Roofing

K. Pitch Pan Filler: Pourable sealer or MBR flashing cement.

2.10 FABRICATION OF SHEET METAL ACCESSORIES

A. SMACNA and NRCA Details: Conform work with details shown, and with applicable fabrication requirements of “Architectural Sheet metal Manual” by SMACNA, Latest Edition, 1993. Comply with installation details of “Roofing and Waterproofing Manual” by NRCA.

1. Prefabricate units as indicated, or provide standard manufacture units complying with requirements;

fabricate from sheet metal indicated.

2. Provide 4” wide flanges for setting on ply felts and concealed by roof flashing fabric.

3. Fabricate work with flat-lock soldered joints and seams; except where joint movement is necessary, provide 1-inch deep interlocking hooked flanges, filled with mastic sealant.

4. Fabricate penetration sleeves with minimum 12” high stack above finished roof surface, of diameter 1” larger than penetrating element. Counterflashing is specified as work of another Section of this project

Manual.

PART 3 EXECUTION

3.01 INSPECTION OF SUBSTRATE

A. Examine substrate surfaces to receive Modified Bituminous Sheet Roofing System and associated work and conditions under which roofing will be installed. Do not proceed with roofing until satisfactory conditions have been corrected in a manner acceptable to Installer. Ensure metal deck is free of debris and clean prior to roof installation.

3.02 GENERAL INSTALLATION REQUIREMENTS

A. Cooperate with inspection and testing agencies engaged or required to perform services in connection with

Modified Bituminous Sheet Roofing System Installation.

B. All finished roof surfaces must drain ponding water within 24-hours.

C. Protect other work from spillage of Modified Bituminous Sheet Roofing materials, and prevent liquid materials from entering or clogging drains and conductors. Replace / restore other work damaged by installation of Modified Bituminous Sheet Roofing System work.

D. Insurance / Code Compliance: Install Modified Bituminous Sheet Roofing System for (and test where required to show) compliance with governing regulations.

E. Coordinate installing roofing system components so that insulation and roofing plies are not exposed to precipitation or left exposed overnight. Protect roof deck and insulation from moisture by providing water cut-offs at the end of each day’s work or when the weather is threatening. Failure to protect the deck and roofing from moisture will result in the removal of damaged materials or materials containing moisture.

Remove water cut-offs prior to start of new work.

F. Asphalt Bitumen Heating: heat and apply bitumen according to EVT Method as recommended by as per manufacturer. Do not raise temperature above minimum normal fluid-holding temperature necessary to attain EVT (plus 25 degrees F, at point of application) more than 1 hour prior to time of application.

Determine flash point, finished blowing temperature, EVT and fire-safe handling temperature of bitumen either by information for manufacturer or by suitable tests. Do not exceed recommended temperature limits during bitumen heating. Do not heat bitumen to a temperature higher than 25 degrees F below flash point. Discard bitumen that has been held at temperature exceeding finished blowing temperature (FBT) for more than (3) hours. Keep kettle lid closed except when adding bitumen.

07 52 50 - 8 Modified Bituminous Sheet Roofing

1. Provide working thermostats on kettles and tankers.

2. Provide hand held thermometer on roof.

G. Bitumen Mopping Weights: For interplay mopping and for other moppings, except as otherwise indicated, apply bitumen at the rate of 25 lbs. of bitumen (plus-or-minus 25% on a total-job average basis) per roof square (100 sq. ft.) between plies.

H. Substrate Joint Penetrations: Do not allow bitumen to penetrate substrate joints and enter building or damage insulation, or other construction. Where mopping is applied directly to a substrate, tape joints off.

I. Cut-Offs: At end of each day’s roofing installation, protect exposed edge of incomplete work. Provide temporary covering of (2) plies of No.15 roofing felt set in full moppings of hot asphalt; remove at beginning of next day’s work.

J. Do not allow storage of materials on any existing or new roof base sheet or granulated cap sheet. Remove trash from roof on a daily basis. Do not roll carts over finished roof areas.

K. Cold Weather Roofing: ONLY apply roofing system when air temperature is 45-degrees F and rising and surface where roofing is to be applied is dry.

3.04 ROOF MEMBRANE INSTALLATION

A. Membrane Application: Apply roofing in accordance with roofing system manufacturer’s instructions and the following requirements. Application of roofing base sheet shall immediately follow application of insulation as a continuous operation.

B. Aesthetic Considerations: The overall appearance of the finished roof application is a standard requirement for the Project. The Contractor shall make necessary preparations, utilize recommended application techniques, apply the specified materials (i.e. granules, metallic powder, etc.), and exercise care in ensuring that the finished application is acceptable to the Owner. Granules shall be sprinkled and embedded in all asphalt overruns, while asphalt is still hot.

C. Priming: Prime metal flanges (all jacks, edge metal, lead drain flashing, etc) and concrete and masonry surfaces with a uniform coating of asphalt primer per ASTM D-41-84.

D. Cant Strips / Tapered Edge Strips: Except as otherwise shown, install preformed 45 degree fiber cant strips at junctures of roofing membrane with vertical surface. Provide preformed tapered edge strips at perimeter edges of roof which do not terminate at vertical surfaces.

E. Modified Base Ply:

1. Install one (1) ply of modified base sheet over insulation in a full and uniform coating of SEBS asphalt, applied at the rate of (25) pounds per square.

2. Laps: Four (4) inch side laps and six (6) inch end laps.

3. Provide chalk line markings for proper parallel and perpendicular alignment of cap sheet.

4. Application: Adhere to substrate and on all walls, curbs and bases, uniform in a solid mopping of hot

SEBS modified roofing asphalt applied at a rate required by roofing system manufacturer, not less than

25-lbs. per square.

5. Apply SEBS no more than 10-feet ahead of each roll being embedded, except reduce distance in cooler and / or windy conditions.

6. Ensure complete and continuous seal and contact between bitumen and ply sheets, including ends, edges and laps without wrinkles, fish mouths or blisters.

7. Cut out fish mouths and wrinkles and patch in accordance with roofing manufacturer’s methods of operation or replace all sheets which are damaged and have not fully and continuously bonded.

07 52 50 - 9 Modified Bituminous Sheet Roofing

F. Modified Bituminous Membrane Cap Sheet:

1. Install one (1) ply of modified bituminous granulated membrane to base ply in a full and uniform coating of SEBS asphalt at the rate of (25) pounds per square.

2. Laps: Four (4) inch side laps and six (6) inch end laps.

3. Provide chalk line markings for proper parallel and perpendicular alignment of cap sheet.

4. Application: Adhere to substrate in a solid mopping of hot SEBS modified roofing asphalt applied at a rate required by roofing system manufacturer, not less than 25-lbs. per square.

5. Apply uniform and continuous pressure to selvage and end laps to ensure complete adhesion.

6. Keep bitumen mopping line (bleed-out) to within 1-inch of width of cap sheet. Apply uniformly and in straight runs along selvage lap edges.

7. Use mop technique to prevent excessive bleed-out along lap edges and to ensure selvage receives hottest bitumen.

8. Embed modified bitumen membrane in a uniform and continuous mopping of asphalt.

9. Embed loose granules at seams of all asphalt bleed-out while asphalt is stall hot. Bleed-out to be uniform in width (maximum of 1-1/2”).

10. Extend modified bituminous cap sheet to (2) inches above top edge of cant strip and terminate.

11. Complete edge flashing in accordance with roofing manufacturer’s recommendations, and these specifications.

12. Prior to installing the modified membrane cap sheet, material shall be rolled out flat for approximately

(2) hours in order for the membrane to relax.

13. Apply adhesive no more than 10-feet ahead of each roll being embedded. Under cool weather conditions, or if wind gusts exceed 15-mph, apply adhesive no more than 5-feet ahead of each roll.

G. Flashings:

1. Install aluminum clad modified bituminous flashing at cant strips and other sloping and vertical surfaces, at roof edges, and at penetrations through roof. Install (1) ply base flashing sheet material by mopping substrate with SEBS asphalt and embedding flashing solidly against substrate. Torch apply aluminum clad flashing onto base ply. Extend flashing a minimum of (6) inches onto modified bituminous sheet roofing. Provide a minimum of (10) inches on vertical surfaces where termination is located at counterflashing. Extend base flashing over the top of the parapet walls.

2. Install stripping where metal flanges are set on roofing. Install (1) ply of fabric set in roofing cement and cover with modified bituminous stripping in a continuous bed of MBR cement and extend a minimum of (6) inches out onto the roof membrane, then cover with modified bituminous roofing cap sheet.

3. Termination Bar: Install bar on aluminum clad flashings at 18" over cant strip and 36" o.c. where flashings are installed horizontally, on parapet wall. After installation, cover with fabric and roof cement, cover laps with fabric, MBR and aluminum coating. Refer to the Drawings for termination bar locations.

H. Set-On Accessories: Where small roof accessories are set on modified bituminous sheet roofing membrane, set metal flanges in a bed of roofing cement and seal penetration of membrane with bead of roofing cement to prevent flow of asphalt from membrane.

I. Allow for expansion of running metal flashing and edge trim that adjoins roofing. Do not seal or bond membrane or modified bituminous flashing or stripping to metal flanges over (36) inches in length.

J. Counterflashing: Counterflashing, cap flashing, expansion joints and similar work is to be coordinated with modified bituminous sheet roofing work, are specified in another Section of this Project Manual.

K. Roof Accessories: Miscellaneous sheet metal accessory items, and major items of roof accessories (if any) to be coordinated with roof work, are to be part of this Specification Section.

07 52 50 - 10 Modified Bituminous Sheet Roofing

L. Walkways: Provide walkway protection pads at location shown, using units of size shown or, if size is not shown, using modified bituminous finish ply and installed per manufacturer’s recommendations.

3.05 PROTECTION OF ROOFING

A. Upon completion of work at roof, Installer shall advise Contractor of recommended procedures for surveillance and protection of roofing during remainder of construction period. At end of construction period, or at a time when remaining construction work will in no way affect or endanger roofing (at

Contractor’s option), Installer shall make a final inspection of roofing and prepare a written report (to

Contractor, with copy to Owner and Architect) describing the nature and extent of deterioration of damage found in the Work.

1. Installer shall repair or replace (as required) deteriorated or defective work found at time of final inspection. Installer shall be engaged by Contractor to repair damages to roofing which occurred subsequent to the roofing installation and prior to final inspection. Repair or replace the roofing and associated work to a condition free of damage and deterioration at time of Substantial Completion.

2. General Contractor shall ensure that other work performed above the built-up roof not damage the roofing system. Provide plywood protection as necessary.

3. Restrict construction traffic and equipment movement on the completed roofing to only essential personnel. Provide appropriate protection against traffic and construction activities on completed roofs.

3.06 FIELD QUALITY CONTROL AND INSPECTIONS

A. Site Conditions: All areas around job site shall be free of debris, roofing materials, equipment and related items after completion of work.

END OF SECTION 07 52 50

Kentucky School for the Deaf – HVAC Renovations CMTA Project: VKYS23-06

Brady Hall

Kentucky School for the Deaf – HVAC Renovations

Kerr Hall CMTA Project: VKYS23-05

232113 - 1

SECTION 23 2113 - HYDRONIC PIPING

PART 1 – GENERAL

1.1 RELATED DOCUMENTS

A. The Contractor's attention is directed to the General and Special Conditions, COMMON

WORK RESULTS FOR HVAC and to all other Contract Documents as they apply to this branch of the work. Attention is also directed to all other sections of the Contract Documents which affect the work of this section, and which are hereby made a part of the work specified in this section.

B. Each Contractor's attention is also directed to Specification Section HANGERS, CLAMPS, ATTACHMENTS, ETC.

C. The Contractor's attention is also directed to Specification Section SHOP DRAWINGS, MAINTENANCE, MANUALS AND PARTS LISTS FOR HVAC.

D. The Contractor's attention is directed to Specification Section INSULATION -

MECHANICAL.

E. The Contractor's attention is directed to Specification Section PIPE FILLING, CLEANING, FLUSHING, PURGING AND CHEMICAL TREATMENT.

1.2 SCOPE

A. Unless otherwise indicated, all materials shall be new and of the best grade and quality for the type specified. Materials shall comply with the “Buy American Act”.

B. Where piping is not indicated on the plans, but is obviously or apparently required, contact the Engineer prior to submission of the bid.

C. The piping indicated shall be installed complete and shall be of the size indicated. When a pipe size is not indicated, the Contractor shall request the pipe size from the Engineer.

Where a section of piping is not indicated but is obviously required for completion of the system, the Contractor shall provide same at no additional cost to the project.

D. Pay particular attention to conflict of piping with other work. Do not install until conflict is resolved. If in doubt, consult Engineer.

E. Piping materials in each system shall, to the extent practicable, be of the same material.

Frequent changes of material (for example, from copper to steel) shall be avoided and in no case shall be accomplished without use of insulating unions and permission of the

Engineers.

F. Dielectric couplings or through ways shall be provided at all connections of dissimilar materials.

Kentucky School for the Deaf – HVAC Renovations

Kerr Hall

232113 - 2

G. Nipples shall be of the same material, composition, and weight classification as pipe with which installed.

H. Plastic piping or any material with a flame and smoke spread rating not approved for plenum use shall not be permitted in supply, return, relief, or exhaust plenums.

I. Non-metallic piping shall be installed in strict accordance with the manufacturer's instructions. If no such instructions are available, consult Engineer.

J. When connecting to an existing hydronic water system (chilled, hot, etc.), the Contractor shall include cost to drain the existing piping system and refill with water/closed loop chemicals to match existing fluid. If the building is occupied, and the drain down will affect services to these occupied areas, then the systems shall be drained and refilled over a weekend at a time acceptable to the Owner. Refer to Specification.

PART 2 – PRODUCTS

2.1 UNIONS, FLANGES AND WELDED TEES

A. Screwed unions, soldered unions or bolted flanges shall be provided as required to permit removal of equipment, valves, and piping accessories from the piping system.

Keep adequate clearances for coil removal, rodding, tube replacement, motor lubrication, filter replacement, etc. Flanged joints shall be assembled with appropriate flanges, gaskets, and bolting. The clearance between flange faces shall be such that the connections can be gasketed and bolted tight without imposing undue strain on the piping system.

B. Dielectric insulating couplings or though ways shall be used wherever the adjoining materials being connected are of dissimilar metals such as connections between copper and steel pipe.

C. Tee connections for welded pipe shall be assembled with welding fittings. Where the size of the side outlet is such that a different connection technique than on the run is required, a weldolet, sockolet, or threadolet type fitting may be used for the branch in place of reducing tees only where the branch is 2/3 the run size or smaller. Weld-o-let and thread-o-let branch connections are acceptable.

2.2 STANDARDS

A. All piping and material shall be new, comply with the “Buy American Act” and shall conform to the following minimum applicable standards:

• Steel pipe; Schedule 40; ASTM A-53.

• Copper tube; Type K, L, M; ASTM B88-62; Type DWV ASTM B306-62.

• Cast iron soil pipe; ASA A-40. l and CS 188-59.

• Cast iron drainage fittings; ASA B16.12.

• Cast iron screwed fittings; ASA B16.4.

• Welding fittings; ASA B16.9.

• Cast brass and wrought copper fittings; ASA B16.18.

• Cast brass drainage fittings; ASA B16.23.

• PVC pipe; Schedule 40; ASTM D-1785.

Kentucky School for the Deaf – HVAC Renovations

Kerr Hall

232113 - 3

• PVC pipe; Schedule 40; ASTM D2665 and D1784. Piping must be installed in compliance to the manufacturer's recommendations which shall be made available to the plumbing inspector.

2.3 HVAC PIPING APPLICATIONS

A. Chilled Water

1. 2” and Smaller: Schedule 40 black steel pipe with screwed fittings or Type “L” hard copper tubing with wrought copper fittings and 95/5 solder.

2. 2” and Smaller: Installation-Ready™ fittings for schedule 40 plain end carbon sizes½” through 2”. Fittings shall consist of gasket and ductile iron housing, complete with pre- lubricated EPDM gasket, and designed for direct stab installation. System rated for a working pressure of 300 psi. QVSD P07, P10, P89.

3. 2-1/2” and Larger: Schedule 40 black steel pipe with flanged or welded joints.

All joints and fittings shall have minimum 125# rating. Weldolets may be used for branch line connections to pipe mains, as long as they are less than 2/3 the main pipe size.

4. 2 1/2” and Larger: Schedule 40 Victaulic 107/W07 or approved mechanical grooved pipe couplings and fittings with a minimum 125# rating. Install gaskets as recommended by the manufacturer. Piping system shall be rated for minimum of 250 degrees F water temperature. Mechanical grooved piping may not be used if system water temperature exceeds 250ºF. All grooved components must be of one manufacturer.

A. Heat Pump Loop Piping (Option A)

1. Mains and branches – Piping shall be virgin polyethylene with a PE 3408 piping formulation and 345464C or greater cell classification. Pipe shall be SDR 15.5, minimum pressure rating of 110 psi at 73.4°F.

2. Individual Heat Pump Runouts - Type "L" hard copper tubing with wrought copper fittings and 95/5 solder.

3. Special Note: Takeoffs and branch piping to individual coils or heat pumps shall not be connected to the top of hydronic mains. Connection to mains shall be at the side of the main. Also refer to details on the drawings.

4. Transitions from HDPE to Copper – Factory Manufactured Transition required with brass or stainless steel threads. No metal threads shall be inserted into polyethylene piping, and no polyethylene threads shall be inserted into metal piping.

5. The only acceptable method for joining pipe is by a heat fusion process. Pipe shall be butt or socket fused in accordance with pipe manufacturer's procedures. Victaulic style 905/908 couplings may be utilized on above ground HDPE applications.

6. Aquatherm piping with fused joints is also an acceptable alternative. (Contractor's

Option)

Kentucky School for the Deaf – HVAC Renovations

Kerr Hall

232113 - 4

B. Heat Pump Loop Piping (Option B)

1. 2” and Smaller: Installation-Ready™ fittings for schedule 40 plain end carbon sizes ½” through 2”. Fittings shall consist of a ductile iron housing, complete with pre-lubricated EPDM gasket, and designed for direct stab installation. System rated for a working pressure of 300 psi. QVSD P07, P10, P89.

2. 2½” and Larger: Schedule 40 Victaulic 107/W07 or approved mechanical grooved pipe couplings and fittings with a minimum 125# rating. Install gaskets as recommended by the manufacturer. Piping system shall be rated for minimum of 250 degrees F water temperature. Mechanical grooved piping may not be used if system water temperature exceeds 250ºF. All grooved components must be of one manufacturer.

C. Hot Water Piping:

1. 2” and Smaller: Schedule 40 black steel pipe with screwed fittings or Type “L” hard copper tubing with wrought copper fittings and 95/5 solder.

2. 2” and Smaller: Installation-Ready™ fittings for schedule 40 plain end carbon sizes ½” through 2”. Fittings shall consist of gasket and ductile iron housing, complete with pre- lubricated EPDM gasket, and designed for direct stab installation. System rated for a working pressure of 300 psi. QVSD P07, P10, P89.

3. 2½” and Larger: Schedule 40 black steel pipe with 125# welded or flanged joints.

Weldolets may be used for branch line connections to pipe mains. Weldolets may be used for branch line connections to pipe mains, as long as they are less than 2/3 the main pipe size. Type “L” hard copper piping with wrought copper fittings and

95/5 solder may be installed.

4. 2½” and Larger: Schedule 40 Victaulic 107/W07 or approved mechanical grooved pipe couplings and fittings with a minimum 125# rating. Install gaskets as recommended by the manufacturer. Piping system shall be rated for minimum of 250 degrees F water temperature. Mechanical grooved piping may not be used if system water temperature exceeds 250ºF. All grooved components must be of one manufacturer.

D. Air Vent Discharge Lines: Type "L" soft copper; wrought copper fittings, 95/5 solder.

Pipe to a suitable drainage location.

E. Condensate Drain Lines Type "M" copper tubing with sweat fittings and 95/5 solder.

F. Refrigerant Piping: Type "L" copper tubing with forged or wrought copper fittings and silver soldered joints. Solder must have a minimum of 15% silver content.

PART 3 – EXECUTION

3.1 All piping shall be capped or plugged during erection as required to keep clean and debris and moisture free.

3.2 All piping shall be installed straight and true, parallel, or perpendicular to the building construction. Piping shall be installed to allow for expansion without damage to the

Kentucky School for the Deaf – HVAC Renovations

Kerr Hall

232113 - 5 building finishes, structure, pipe, equipment, etc., use offsets, U-bends or expansion joints as required. No mitered joints or field fabricated pipe bends shall be accepted.

Pipe shall clear all windows, doors, louvers, and other building openings.

3.3 All pipes shall be supported in a neat and workmanlike manner and wherever possible, parallel runs of horizontal piping shall be grouped together on hangers. Vertical risers shall be supported at each floor line with approved steel pipe riser clamps. Spacing of pipe supports shall not exceed eight (8) foot intervals for pipes 3” and smaller and ten

(10) foot intervals on all other piping. Small vertical pipes (1” and less) shall be bracketed to walls, structural members, etc. at four (4) foot intervals so as to prevent vibration or damage by occupants.

3.4 The use of wire or perforated metal to support pipes will not be permitted. Hanging pipes from other pipes shall not be permitted.

3.5 Insulated piping shall be supported on a rigid insulation block at each hanger to prevent crushing of insulation by hangers. Hangers shall pass completely around the insulation jacket and a steel protective saddle shall be applied to prevent compression of the insulation.

3.6 In metal buildings or buildings with light gauge trusses, support piping with standard pipe hangers with C-clamp connection to main structural members (not perlins), use angle steel cross pieces between main structural members where required to provide rigid support.

3.7 Where piping rests directly on a hanger, clip, bracket or other means of support, the support element shall be of the same material as the pipe, (e.g., copper to copper, ferrous to ferrous, etc.) or shall be electrically isolated one from the other to prevent pipe damage by electrolysis. Pay particular attention and do not allow copper pipe to rest on ferrous structural members, equipment, etc. without electrolytic isolation. This includes temporary support required during Construction.

3.8 In general, piping shall be installed concealed except in mechanical rooms, etc. unless otherwise indicated, and shall be installed underground or beneath concrete slabs only where indicated. All lines at ceilings shall be held as high as possible and shall run to avoid conflicts with other trades, and to facilitate the Owner's use and maintenance.

Location of pipe in interior partitions shall be carefully coordinated with whoever will construct the partitions after the piping is in place. Where exposed risers occur, they shall be kept as close to walls as possible.

3.9 Pipe shall be cut accurately to measurements established at the building by the

Contractor and worked into place without springing or forcing. All pipes shall be reamed to full pipe diameter before joining and before assembling. All lengths of pipe shall be set vertically and tapped with a hammer to remove scale and dust and inspected to ensure that no foreign matter is lodged therein.

3.10 All hot and cold water piping shall be kept a sufficient distance apart to prevent heat transfer between them. Cold water piping shall also be kept apart from refrigerant hot gas lines.

3.11 Piping carrying water or other fluids subject to freezing shall not be installed in locations subject to freezing. If in doubt, consult Engineer.

Kentucky School for the Deaf – HVAC Renovations

Kerr Hall

232113 - 6

3.12 Apply approved pipe dope for service intended to all male threaded joints. The dope shall be listed for intended use.

3.13 Eccentric reducers shall be used where required to permit proper drainage and venting of pipe lines; bushings shall not be permitted.

3.14 High points of closed loop chilled water, hot water and geothermal systems shall have manual air vents as required unless automatic air vents are specifically indicated. Pipe to suitable drainage point.

3.15 Installation of…