Addendum Two.pdf

COMMONWEALTH OF KENTUCKY

DEPARTMENT FOR FACILITIES AND SUPPORT SERVICES

DIVISION OF ENGINEERING AND CONTRACT ADMINISTRATION

INVITATION TO BID NO: RFB-166-26

FOR: Security Fence Addition Kentucky State Penitentiary Department of Corrections Eddyville, Kentucky

DATE: January 22, 2026

RFB-785-2600000294

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

Item 2: Official Bid Date has been moved to February 4, 2026, at 1:30 P.M. Eastern Time.

END OF ADDENDUM

Invitation to Bid No. RFB-166-26 For: Security Fence Addition Kentucky State Penitentiary Department of Corrections Eddyville, Kentucky

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

D i f f erent by Des i gn – B u i l t on Expe r i enc e

SECURITY FENCE ADDITION

Kentucky State Penitentiary 266 Water Street Eddyville, KY 42038

Addendum Number Two

21 January 2026

Project #: 527-CAL7-SR50-00

TO ALL BIDDERS OF RECORD AND ALL REGULATORY AGENCIES

This Addendum forms part of the Contract Documents and modifies the Project Manual and the Construction Drawings dated 21 November 2025. Acknowledge receipt of this Addendum in Proposal. Failure to do so may subject Bidder to disqualification.

1.1 Reference: Contractor Questions dated 01.19.2026

Question 1: With regards to the 4" conduit to be run on the stone/concrete wall in Note 4 on

Page E 0110. Does that have to be GRC or will aluminum conduit suffice?

Clarification 1: Rigid aluminum conduit is acceptable.

1.2 Reference: Contractor Questions dated 01.16.2026

Question 1: Does scafold need to be taken down each day if "Barbed tape pyramid" is up around scaffolding?

Clarification 1: No.

Question 2: What size hog ring is needed for barbed tape and barbed tape pyramids?

Clarification 2: Per drawing details and specification Section 323113.53, Paragraph 3.3.C.P, Barbed tape to be tied with 18 gauge stainless steel zip ties.

Question 3: Does "barbed tape pyramid" need to be in place while crew is working or only after crew is finished for day?

Clarification 3: Yes, temporary fencing shall be in place while crew is working.

Question 4: Can we work 4 - 10hr sifts?

Clarification 4: Yes.

Question 5: Can we work weekends?

Clarification 5: Yes.

Addendum Number Two

1.3 Reference: Contractor Questions dated 01.15.2026

Question 1: On the walls, can all the existing barbed tape coils and fences be removed without installation of a new razor ribbon coils? Is a temporary fence required to perform this removal work?

Clarification 1: No, all existing razor ribbon coils are to remain unless specifically noted on the drawings to be removed. Yes, temporary fencing is required for any demolition to protect workers and equipment.

Question 2: Where is the temporary fence to be installed in tight areas such as Zones 11 and

12?

Clarification 2: Temporary fencing can be run from stone wall to adjacent build. Contractor will need to work with facility in these areas to ensure building doors that open to the temporary work zone will remain locked until work is completed in that area.

Question 3: Is a temporary fence required in the areas of a double perimeter fence?

Clarification 3: Yes.

Question 4: Can the top and second existing razor ribbon coils be removed without installation of the new barbed wire, razor ribbon coil and Sensor Coil for a period of time, such as a week or two?

Clarification 4: This is acceptable with installation of temporary fencing.

Question 5: Can the two inner most ground razor ribbon coils be moved and left connected 20’ +/- from inner fence to provide access to the inner fence for the barbed wire, razor ribbon, Sensor Coil and DeFensor cable installation?

Clarification 5: This is acceptable with installation of temporary fencing. Coils to be reinstalled/repositioned to original location upon completion of work.

Question 6: Verify if the feeder cables from the equipment room in the annex to the wall outside

Building 2 are required to be run in conduit.

Clarification 6: Yes feeder cable routed from equipment room to wall outside building 2 shall be routed in 4” rigid conduit.

Question 7: Note 4 on Drawing E0110 states that the feeder cable is to be installed in 4” conduit mounted on the wall. Verify if a smaller conduit can be utilized in areas where there is only one feeder cable if the conduit size meets the NEC.

Clarification 7: Provide 4” conduit as indicated.

Question 8: Can the feeder cable boxes be installed directly on the wall and outer fence vs on a separate post?

Clarification 8: Yes. Provide all necessary Unistrut supports to mount to fence or wall.

Addendum Number Two

Question 9: Verify the interface requirements from the new monitor and controller (PSCS) to existing NLEFS controller. Is the PSCS only required to provide dry contact outputs to the NLFS controller. Who is responsible for programing these dry contact outputs on the NLFS controller.

Clarification 9: Provide dry contacts and cable connection from existing stun fence controller alarm circuit to new PSCS. Awarded contractor shall provide all programming within new system to indicate stun fence alarm on new system/monitor when existing stun fence sends alarm signal. Coordinate with existing alarm system manufacturer to verify alarm output contacts.

Question 10: Verify if work can proceed simultaneously on the masonry walls (zones 1-3, and 11-

14) with the work on the inner and outer fences (zones 4-10).

Clarification 10: Yes, work can proceed simultaneously. However, only one sallyport can be closed at a time.

Question 11: For the temporary fence, can one 5’ diameter razor ribbon coil be substituted for three 30” razor ribbon coils.

Clarification 11: No

1.4 Reference: Contractor Questions dated 01.13.2026

Question 1: Could the mason's work four (4) 10 hour days Monday through Thursday?

Clarification 1: Yes

Question 2: Which preservation standard governs the work, I know you mentioned there will be no SHPO representative to approve mortar, color etc.

Clarification 2: Per the specifications the mortar is to be tested and color matched. Color and texture of stone repair to be approved by architect based on mock-up. No preservation standards govern work

Question 3: Are there existing mortar analysis reports? If not, who is responsible for testing and approval?

Clarification 3: No reports are available. Testing by contractor

Question 4: Are mockups required for tuckpointing, cleaning, tooling, and color—and where will they be located?

Clarification 4: Mockup is required - see spec

Question 5: Are there restrictions on power tools, grinders, or mechanical cleaning?

Clarification 5: No, but all tools will be inventoried daily.

Question 6: Is chemical cleaning allowed, and if so, which products are pre-approved?

Clarification 6: No chemical cleaning

Question 7: Are quantities unit-price based or lump sum, and how will final quantities be verified?

Clarification 7: Base bid is lump sum. Anything over base bid will be unit priced. Quantities will need to be documented by contractor.

Addendum Number Two

Question 8: How should unsound masonry discovered after raking be handled—change order or included?

Clarification 8: All masonry work in excess of base bid quantities to be addressed via unit price.

Question 9: How many workers are allowed onsite at one time?

Clarification 9: 4-6 workers per day are acceptable.

Question 10: What tools or equipment are prohibited inside the facility?

Clarification 10: No tools or equipment are prohibited at this time. Grinders, Generators, electrical tools are acceptable.

Question 11: Is escorted access required, and who pays for escort time?

Clarification 11: KSP will provide escorts and pay for it, contractors must be escorted by KSP staff at all times.

Question 12: Can scaffolding remain erected overnight, or must it be removed daily?

Clarification 12: Yes, scaffolding can remain erected overnight within temporary fenced areas.

Question 13: Are there restricted areas that affect productivity or sequencing?

Clarification 13: Any work inside the institution comes with some restrictions. Outside the stone wall/fence will be less restricted.

Question 14: What level of dust, debris, and mortar containment is required? Silica?

Clarification 14: Contractor to meet all federal, state and local air quality regulations, as well as

OSHA standards for exposures exceeding established limits.

Question 15: Can work be performed during weekends or off-hours?

Clarification 15: Yes

Question 16: Are there adjacent occupied areas requiring noise or vibration limits?

Clarification 16: No. Contractor to temporarily suspend demolition activities upon owner request.

Question 17: Is lime mortar required (NHL or lime putty), and what cure time is expected?

Clarification 17: This will depend on the mortar analysis

Question 18: Are there blackout dates due to prison operations?

Clarification 18: No

Question 19: Will the schedule allow for extended cure times required for historic mortar?

Clarification 19: Contractor to incorporate proper cure times in proposed schedule.

Question 20: What submittals are required:

• Mortar mix designs?

• Stone samples?

• Cleaning tests?

Clarification 20: See specification

Question 21: Who has final authority for acceptance—Architect, Owner, Preservation

Authority?

Clarification 21: Owner/Architect for appearance.

Addendum Number Two

Question 22: Is there a hold-point inspection before proceeding beyond mockups?

Clarification 22: No hold-point after mockups are approved.

Question 23: What assumptions should bidders make regarding unknown masonry conditions so all bids are equal?

Clarification 23: Bid the quantities provided on the contract drawings and provide the unit costs

Question 24: Please confirm the assumed repointing depth for bidding purposes (4" in specs). If deeper deterioration is encountered, please confirm it will be addressed via change order.

Clarification 24: All masonry work in excess of base bid quantities to be addressed via unit price.

Question 25: Please confirm minimum work area sizes and sequencing. Will work areas be released continuously or intermittently based on prison operations?

Clarification 25: Two (2) separate working areas at a time are acceptable. Actual size and sequencing to determined by contractor and shall be reviewed /approved by owner prior to beginning all work. All work to be suspended as requested by owner (in event of fight, missing inmate, etc).

Question 26: Please confirm that concealed or unknown masonry conditions will be treated as differing site conditions and addressed via change order.

Clarification 26: All masonry work in excess of base bid quantities to be addressed via unit price.

1.5 Reference: Drawings

Sheet S102:

Clarification 1: REPAIR SCHEDULE: DETAIL 7/S103 applies to repair category CAP JOINT Clarification 2: REPAIR SCHEDULE: repair category REPOINTING. The units are specified as square feet (SF). The amount noted in the schedule is based upon square feet of wall that requires repointing. The size of the stone is noted as 2 FT HIGH X 3 FT TALL.

1.6 Reference: Specifications

A. Section 040342 – Historic Stone Masonry Repair

1) Add Section 040342 to Project Manual.

B. Section 040343 – Historic Stone Masonry Repointing

1) Add Section 040342 to Project Manual.

Thank you.

Shane D Wiles, AIA, LEED AP BD+C Architect 713 Architects, PLLC

Security Fence Addition

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527-CAL7-SR50-00

November 2025

HISTORIC STONE MASONRY REPAIR 040342 - 1

SECTION 040342 - HISTORIC STONE MASONRY REPAIR

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

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

Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section includes historic treatment work consisting of repairing historic stone assemblies as follows:

1. Repairing stone masonry.

1.3 UNIT PRICES

A. Work of this Section is affected by unit prices specified in Section 012200 "Unit Prices."

1. Unit prices apply to additions to and deletions from Work as authorized by Change

Orders.

1.4 DEFINITIONS

A. Low-Pressure Spray:

1. Pressure: 100 to 400 psi.

2. Flow Rate: 4 to 6 gpm.

B. Face Bedding: Setting of stone with the rift or natural bedding planes (strata) vertical and parallel to the wall plane rather than horizontal or "naturally bedded," which holds bedding planes together by gravity.

C. Rebuilding (Setting) Mortar: Mortar used to set and anchor masonry in a structure, distinct from pointing mortar installed after masonry is set in place.

D. Rift: The most pronounced direction of splitting or cleavage of a stone.

E. Stone Terminology: ASTM C119.

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1.5 PREINSTALLATION MEETINGS

A. Preinstallation Meeting: Conduct meeting on historic masonry repair and repointing at Project site.

1. Review methods and procedures related to repairing historic stone masonry, including, but not limited to, the following:

a. Verify historic treatment specialist's personnel, equipment, and facilities needed to make progress and avoid delays.

b. Materials, material application, sequencing, tolerances, and required clearances.

c. Quality-control program.

d. Stone historic treatment program.

e. Coordination with building occupants.

1.6 SEQUENCING AND SCHEDULING

A. Order sand and gray portland cement for colored mortar immediately after approval of mockups. Take delivery of and store at Project site a sufficient quantity to complete Project.

B. Work Sequence: Perform stone historic treatment work in the following sequence, which includes work specified in this and other Sections:

1. Remove plant growth.

2. Clean stone.

3. Rake out mortar from joints surrounding stone to be repaired and from joints adjacent to stone repairs along joints.

4. Repair stonework.

5. Rake out mortar from joints to be repointed.

6. Point mortar and sealant joints.

7. After repairs and repointing have been completed and cured, perform a final cleaning to remove residues from this work.

C. As scaffolding is removed, patch anchor holes used to attach scaffolding. Patch holes in stone according to Part 3 "Stone Patching" Article. Patch holes in mortar joints according to

Section 040343 "Historic Stone Masonry Repointing."

1.7 ACTION SUBMITTALS

A. Product Data: For each type of product.

1. Include construction details, material descriptions, dimensions of individual components and profiles, and finishes.

2. Include recommendations for product application and use.

3. Include test data substantiating that products comply with requirements.

B. Shop Drawings:

1. Include plans, elevations, sections, and locations of stone repair work on the structure.

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2. Indicate complete dimensions for new stone units and their jointing, showing relation of existing to new units.

3. Show partial replacement stone units (dutchmen).

4. Indicate setting number of each repaired stone unit and its location on the structure in annotated plans and elevations.

5. Show replacement and repair anchors, including drilled-in pins. Include details of anchors within individual stone units, with locations of anchors and dimensions of holes and recesses in stone required for anchors.

6. Show locations of scaffolding and points of scaffolding in contact with masonry. Include details of each point of contact or anchorage.

C. Samples for Initial Selection: For the following:

1. Colored Mortar: Submit sets of mortar that will be left exposed in the form of sample mortar strips, 6 inches long by 1/2 inch wide, set in aluminum or plastic channels.

a. Have each set contain a close color range of at least three samples of different mixes of colored sands and cements that produce a mortar matching existing, cleaned mortar when cured and dry.

b. Submit with precise measurements on ingredients, proportions, gradations, and sources of colored sands from which each sample was made.

2. Each type of sand used for mortar; minimum 8 oz. of each in plastic screw-top jars.

a. For blended sands, provide samples of each component and blend. Identify blend ratio.

b. Identify sources, both supplier and quarry, of each type of sand.

3. Patching Compound: Submit sets of patching compound samples in the form of plugs

(patches in drilled holes) in sample units of stone representative of the range of stone colors on the building.

a. Have each set contain a close color range of at least three samples of different mixes of patching compound that matches the variations in existing stone when cured and dry.

D. Samples for Verification: For the following:

1. Each type of patching compound in form of briquettes, at least 3 inches long by 1-1/2 inches wide. Document each sample with manufacturer and stock number or other information necessary to order additional material.

2. Each type of adhesive.

3. Accessories: Each type of anchor, accessory, and miscellaneous support.

1.8 INFORMATIONAL SUBMITTALS

A. Qualification Data: For historic treatment specialist including field supervisors and workers and testing service.

B. Preconstruction Test Reports: For existing stone types and mortar.

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C. Quality-control program.

D. Stone historic treatment program.

E. Training workshop certificate from the repair mortar supplier stating that the installers of the repair mortar have successfully completed the training workshop for installation of the repair mortar.

1.9 QUALITY ASSURANCE

A. Historic Treatment Specialist Qualifications: A qualified historic stone repair specialist.

Experience installing standard unit masonry or new stone masonry is insufficient experience for stone historic treatment work.

1. Historic Treatment Worker Qualifications: When stone units are being repaired, assign at least one worker per crew who is trained and certified by manufacturer of repair mortar to apply its products.

B. Quality-Control Program: Prepare a written quality-control program for this Project to systematically demonstrate the ability of personnel to properly follow methods and use materials and tools without damaging masonry. Include provisions for supervising worker performance and preventing damage.

C. Stone Historic Treatment Program: Prepare a written, detailed description of materials, methods, equipment, and sequence of operations to be used for each phase of the historic treatment work, including protection of surrounding materials and Project site.

1. Include methods for keeping exposed mortar damp during curing period.

2. If materials and methods other than those indicated are proposed for any phase of historic treatment work, add to the quality-control program a written description of such materials and methods, including evidence of successful use on comparable projects, and demonstrations to show their effectiveness for this Project.

D. Mockups: Prepare mockups of historic treatment to demonstrate aesthetic effects and to set quality standards for materials and execution and for fabrication and installation.

1. Stone Repair: Prepare sample areas for each type of stone indicated to have repair work performed. If not indicated, size each mockup not smaller than two adjacent whole units or approximately 48 inches in least dimension. Construct sample areas in locations in existing walls where directed by Architect unless otherwise indicated. Demonstrate quality of materials, workmanship, and blending with existing work. Include the following as a minimum:

a. Partial Stone Replacement: Two partial stone replacements (dutchman repairs).

b. Stone Plug Repair: Two stone plug repairs for each type of stone indicated to be plugged.

c. Full Faced Repair: Two for each type of stone indicated to be repaired, so as to leave no evidence of repair.

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2. Approval of mockups does not constitute approval of deviations from the Contract

Documents contained in mockups unless Architect specifically approves such deviations in writing.

3. Subject to compliance with requirements, approved mockups may become part of the completed Work if undisturbed at time of Substantial Completion.

E. All installers of stone repair mortar shall have successfully completed the training workshop for installation of the mortar.

1.10 PRECONSTRUCTION TESTING

A. Preconstruction Testing Service: Engage a qualified testing agency to perform preconstruction testing on existing mortar and stone as follows:

1. Provide test specimens as indicated and representative of proposed materials and existing construction.

2. Existing Mortar: Test according to ASTM C1324, modified as agreed by testing service and Engineer for Project requirements, to determine proportional composition of original ingredients, sizes and colors of aggregates, and approximate strength. Use x-ray diffraction, infrared spectroscopy, and differential thermal analysis to supplement microscopical methods. Carefully remove existing mortar for testing from within joints at five locations designated by testing service.

3. Replacement Stone: Test each proposed type of replacement stone, according to

ASTM C170/C170M for compressive strength, wet and dry, perpendicular and parallel to rift; ASTM C99/C99M for modulus of rupture, wet and dry, perpendicular and parallel to rift; and ASTM C97/C97M for absorption and bulk specific gravity.

4. Existing Stone: Test each type of existing stone indicated for replacement, according to

ASTM C170/C170M for compressive strength, wet and dry, perpendicular and parallel to rift; ASTM C99/C99M for modulus of rupture, wet and dry, perpendicular and parallel to rift; and ASTM C97/C97M for absorption and bulk specific gravity. Carefully take 4” diameter x 6” deep cores remove from five existing sound stones for testing from locations designated by Engineer.

1.11 DELIVERY, STORAGE, AND HANDLING

A. Deliver stone to Project site strapped together in suitable packs or pallets or in heavy-duty crates and protected against impact and chipping.

B. Deliver each piece of stone with code mark or setting number on unexposed face, corresponding to Shop Drawings, using nonstaining paint.

C. Deliver packaged materials to Project site in manufacturer's original and unopened containers, labeled with manufacturer's name and type of products.

D. Store cementitious materials on elevated platforms, under cover, and in a dry location. Do not use cementitious materials that have become damp.

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E. Store hydrated lime in manufacturer's original and unopened containers. Discard lime if containers have been damaged or have been opened for more than two days.

F. Store lime putty covered with water in sealed containers.

G. Store sand where grading and other required characteristics can be maintained and contamination avoided.

H. Handle stone to prevent overstressing, chipping, defacement, and other damage.

1.12 FIELD CONDITIONS

A. Weather Limitations: Proceed with installation only when existing and forecasted weather conditions permit repair work to be performed according to product manufacturers' written instructions and specified requirements.

B. Temperature Limits: Repair stonework only when air temperature is between 40 and 90 deg F and is predicted to remain so for at least seven days after completion of the Work unless otherwise indicated.

C. Cold-Weather Requirements: Comply with the following procedures for stone repair unless otherwise indicated:

1. When air temperature is below 40 deg F, heat mortar ingredients, repair materials, and existing stone to produce temperatures between 40 and 120 deg F.

2. When mean daily air temperature is below 40 deg F, provide enclosure and heat to maintain temperatures above 32 deg F within the enclosure for seven days after repair.

D. Hot-Weather Requirements: Protect stonework repairs when temperature and humidity conditions produce excessive evaporation of water from mortar and patching materials. Provide artificial shade and wind breaks, and use cooled materials as required to minimize evaporation.

Do not apply mortar to substrates with temperatures of 90 deg F and above unless otherwise indicated.

E. For manufactured repair materials, perform work within the environmental limits set by each manufacturer.

PART 2 - PRODUCTS

2.1 PERFORMANCE REQUIREMENTS

A. Source Limitations: Obtain each type of material for repairing historic masonry (stone, cement, sand, etc.) from single source with resources to provide materials of consistent quality in appearance and physical properties.

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2.2 MASONRY MATERIALS

A. Stone Matching Existing: Natural building stone of variety, color, texture, grain, veining, finish, size, and shape that match existing stone and with physical properties within 10 percent of those determined from preconstruction testing of selected existing stone.

1. For existing stone that exhibits a range of colors, textures, grains, veining, finishes, sizes, or shapes, provide stone that proportionally matches that range rather than stone that matches an individual color, texture, grain, veining, finish, size, or shape within that range.

B. Quarrying New Stone: Have quarry clearly label the direction of rift or bedding planes when rough stone is quarried, to facilitate cutting stones so that natural bedding planes are as required in "Cutting New Stone" Paragraph.

C. Cutting New Stone: Regardless of how existing stone was cut and set, cut each new stone so that, when it is set in final position, the rift or natural bedding planes match the rift orientation of existing stones.

D. Date Identification: Stamp with permanent, nonbleeding ink on a concealed, interior surface of each new stone in easily read 1/4-inch high characters, "MADE 2025."

2.3 MORTAR MATERIALS

A. Portland Cement: ASTM C150/C150M, Type I or Type II; gray where required for color matching of mortar.

1. Provide cement containing not more than 0.60 percent total alkali when tested according to ASTM C114.

B. Hydrated Lime: ASTM C207, Type S.

C. Factory-Prepared Lime Putty: ASTM C1489.

D. Quicklime: ASTM C5, pulverized lime.

E. Mortar Sand: ASTM C144 unless otherwise indicated.

1. Match size, texture, and gradation of existing mortar sand as closely as possible. Blend several sands if necessary to achieve suitable match.

2. Colored Mortar: Natural sand or ground marble, granite, or other sound stone of color necessary to produce required mortar color.

3. For exposed mortar, provide sand with rounded edges.

F. Mortar Pigments: ASTM C979/C979M, compounded for use in mortar mixes, and having a record of satisfactory performance in masonry mortars.

1. Basis-of-Design Product: Subject to compliance with requirements, provide LANXESS

Corporation; Bayferrox Iron Oxide Pigments or comparable product by one of the following:

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a. Davis Colors.

b. Solomon Colors.

G. Water: ASTM C270, potable.

2.4 MANUFACTURED REPAIR MATERIALS

A. Stone-Patching Compound: Factory-mixed cementitious product that is custom manufactured for patching stone.

1. Limestone Repair Mortar: Basis-of-Design Product: Subject to compliance with requirements, provide Jahn M70 by Cathedral Sone Products, Inc. or comparable product by one of the following:

a. HL60 – Limestone Patch by Heritage Group

b. Lithomex – Limeworks

2. Use formulation that is vapor and water permeable (equal to or more than the stone), exhibits low shrinkage, has lower modulus of elasticity than the stone units being repaired, and develops high bond strength to all stone types.

3. Use formulation having working qualities and retardation control to permit forming and sculpturing where necessary.

4. Formulate patching compound in colors, textures, and grain to match stone being patched. Provide no fewer than three colors to enable matching each piece of stone.

B. Cementitious Crack Filler: Ultrafine superplasticized grout that can be injected into cracks, is suitable for application to wet or dry cracks, exhibits low shrinkage, and develops high bond strength to all stone types.

1. Basis-of-Design Product: Subject to compliance with requirements, provide Cathedral

Stone Products, Inc.; Jahn M31 Micro Injection Grout or comparable product.

C. Stone-to-Stone Adhesive: Two-part polyester or epoxy-resin stone adhesive with a 15- to 45-minute cure at 70 deg F, recommended in writing by adhesive manufacturer for type of stone repair indicated, and matching stone color.

1. Basis-of-Design Product: Subject to compliance with requirements, provide Cathedral

Stone Products, Inc.; Natural Adhesive or comparable product by one of the following:

a. Akeni North America

b. Bonstone Materials Corporation

c. Edison Coatings, Inc, Eddyville, Kentucky

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2.5 ACCESSORY MATERIALS

A. Stone Anchors and Pins: Type and size indicated or, if not indicated, to match existing anchors in size and type. Fabricate from Type 304 stainless steel.

B. Setting Buttons and Shims: Resilient plastic, nonstaining to stone, sized to suit joint thicknesses and bed depths of stone units, less the required depth of pointing materials unless removed before pointing.

C. Masking Tape: Nonstaining, nonabsorbent material; compatible with mortar, joint primers, sealants, and surfaces adjacent to joints; and that easily comes off entirely, including adhesive.

D. Other Products: Select materials and methods of use based on the following, subject to approval of a mockup:

1. Previous effectiveness in performing work involved.

2. Minimal possibility of damaging exposed surfaces.

3. Consistency of each application.

4. Uniformity of the resulting overall appearance.

5. Do not use products or tools that could do the following:

a. Remove, alter, or harm the present condition or future preservation of existing surfaces, including surrounding surfaces not in contract.

b. Leave residue on surfaces.

2.6 MORTAR MIXES

A. Measurement and Mixing: Measure cementitious materials and sand in a dry condition by volume or equivalent weight. Do not measure by shovel; use known measure. Mix materials in a clean, mechanical batch mixer.

B. Colored Mortar: Produce mortar of color required by using specified ingredients. Do not alter specified proportions without Architect's approval.

1. Mortar Pigments: Where mortar pigments are indicated, do not add pigment exceeding 10 percent by weight of the cementitious or binder materials, which is limited to 2 percent, unless otherwise demonstrated by a satisfactory history of performance.

C. Do not use admixtures in mortar unless otherwise indicated.

D. Mixes: Mix mortar materials in the following proportions:

1. Rebuilding (Setting) Mortar by Property: ASTM C270, Property Specification, Type N unless otherwise indicated; with cementitious material limited to portland cement and lime.

2. Colored Mortar: Add mortar pigments to produce exposed, setting (rebuilding) mortar of colors required.

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PART 3 - EXECUTION

3.1 PROTECTION

A. Prevent mortar from staining face of surrounding stone and other surfaces.

3.2 STONE REPAIR, GENERAL

A. Historic Treatment Specialist Firms: Subject to compliance with requirements, firms that may provide historic stone masonry repair include, but are not limited to, the following:

1. BJB, Inc. – Louisville, KY

2. Schnell Contractors – Louisville, KY

3. James G Staat Tuckpointing & Waterproofing – St. Louis, MO

4. Western Specialty Contractors – St. Louis, MO

5. LRT Restoration – Monroe, OH

B. Repair Appearance Standard: Repaired surfaces are to have a uniform appearance as viewed from 20 feet away by Architect.

3.3 ABANDONED ANCHOR REMOVAL

A. Remove abandoned anchors, brackets, wood nailers, and other extraneous items no longer in use unless indicated to remain.

1. Remove items carefully to avoid spalling or cracking stone.

2. Notify Architect before proceeding if an item cannot be removed without damaging surrounding stone; do the following where directed:

a. Cut or grind off item approximately 3/4 inch beneath surface, and core drill a recess of same depth in surrounding stone as close around item as practical.

b. Immediately paint exposed end of item with two coats of antirust coating, following coating manufacturer's written instructions and without exceeding manufacturer's recommended dry film thickness per coat. Keep paint off sides of recess.

3. Patch the hole where each item was removed unless directed to remove and replace the stone unit.

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3.4 STONE REMOVAL AND REPLACEMENT

A. At locations indicated, remove stone that has deteriorated or is damaged beyond repair.

Carefully remove entire units from joint to joint, without damaging surrounding masonry, in a manner that permits replacement with full-size units.

B. Support and protect remaining masonry that was supported by the stone removed.

C. Notify Architect of unforeseen detrimental conditions, including voids, cracks, bulges, loose masonry units in existing stone or unit masonry backup, rotted wood, rusted metal, and other deteriorated items.

D. Remove in an undamaged condition as many whole stone units as possible.

1. Remove mortar, loose particles, and soil from stone by cleaning with hand chisels, brushes, and water.

2. Remove sealants by cutting close to stone with utility knife and cleaning with solvents.

3. Store stone for reuse. Store off ground, on skids, and protected from weather.

4. Deliver cleaned stone not required for reuse to Owner unless otherwise indicated.

E. Clean masonry surrounding removal areas by removing mortar, dust, and loose particles in preparation for stone replacement.

F. Replace removed damaged stone with new stone matching stone. Do not use broken units unless they can be cut to usable size.

G. Rift: Do not allow face bedding of stone. Before setting, inspect to verify that each stone has been cut so that, when it is set in final position, the rift or natural bedding planes are predominantly horizontal. Reject stone with vertical bedding planes, except as required for arches, lintels, and copings.

H. Install replacement stone into bonding and coursing pattern of existing stone. If cutting is required, use a motor-driven saw designed to cut stone with clean, sharp, unchipped edges.

Finish edges to blend with appearance of edges of existing stone.

1. Maintain joint width for replacement stone to match existing joints.

2. Use setting buttons or shims to set stone accurately spaced with uniform joints.

I. Set replacement stone with rebuilding (setting) mortar and with completely filled bed, head, and collar joints. Butter vertical joints for full width before setting, and set units in full bed of mortar unless otherwise indicated. Replace existing anchors with new anchors of size and type indicated.

1. Tool exposed mortar joints in repaired areas to match joints of surrounding existing stonework.

2. Rake out mortar used for laying stone before mortar sets according to Section 040343

"Historic Stone Masonry Repointing." Point at same time as repointing of surrounding area.

3. When mortar is hard enough to support units, remove shims and other devices interfering with pointing of joints.

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J. Curing: Cure mortar by maintaining in thoroughly damp condition for at least 72 consecutive hours, including weekends and holidays.

1. Hairline cracking within the mortar or mortar separation at edge of a joint is unacceptable. Completely remove such mortar and repoint.

3.5 PARTIAL STONE REPLACEMENT

A. Where backup masonry is fractured or unstable and at locations indicated, remove mortar and masonry units that are broken or deteriorated, and rebuild with whole, new brick or whole, salvaged backup masonry units. Carefully remove entire units from joint to joint, without damaging surrounding masonry, in a manner that permits replacement with full-size units.

B. Support and protect remaining masonry that surrounds removal area.

C. Notify Architect of unforeseen detrimental conditions, including voids, cracks, bulges, loose masonry units beyond the removal area, rotted wood, rusted metal, and other deteriorated items.

D. Clean masonry surrounding removal areas by removing mortar, dust, and loose particles in preparation for brick replacement.

E. Replace removed damaged stone with new stone matching existing stone.

F. Install replacement stone into bonding and coursing pattern of existing stone. If cutting is required, use a motor-driven saw designed to cut masonry with clean, sharp, unchipped edges.

G. Lay replacement stone with rebuilding (setting) mortar and with completely filled bed, head, and collar joints. Butter ends with sufficient mortar to fill head joints and shove into place. Wet both replacement and surrounding stones that have ASTM C67 initial rates of absorption

(suction) of more than 30 g/30 sq. in. per min. Use wetting methods that ensure that units are nearly saturated but surface is dry when laid.

H. Curing: Cure mortar by maintaining in thoroughly damp condition for at least 72 consecutive hours, including weekends and holidays.

1. Hairline cracking within the mortar or mortar separation at edge of a joint is unacceptable. Completely remove such mortar and repoint.

3.6 PARTIAL STONE REPLACEMENT

A. Remove defective portion of existing stone unit (backing stone). Carefully remove defective portion of stone by making vertical and horizontal saw cuts at face of backing stone and removing defective material to depth required for fitting partial replacement (dutchman).

1. Make edges of backing stone at cuts smooth and square to each other and to finished surface; essentially rectangular. Make back of removal area flat and parallel to stone face.

2. Do not overcut at corners and intersections. Hand trim to produce clean sharp corners with no rounding and no damage to existing work to remain.

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3. If backing stone becomes further damaged, remove damaged area and enlarge partial replacement as required.

B. Remove mortar from joints that abut area of stone removal to same depth as stone was removed.

Remove loose mortar particles and other debris from surfaces to be bonded and surfaces of adjacent stone units that will receive mortar by cleaning with stiff-fiber brush.

C. Cut and trim partial replacement to accurately fit area where material was removed from backing stone. Fabricate to size required to produce joints between partial replacement and backing stone of no more than 1/4 inch in width, and to produce joints between partial replacement and other stones that match existing joints between stones.

D. Concealed Pinning: Before applying adhesive, prepare for concealed mechanical anchorage consisting of 1/4-inch- diameter, threaded] stainless-steel pins set into 1/4-inch- diameter holes drilled into backing stone and into, but not through, the partial replacement.

E. Apply stone-to-stone adhesive according to adhesive manufacturer's written instructions. Coat bonding surfaces of backing stone and partial replacement, completely filling all crevices and voids.

F. Apply partial replacement while adhesive is still tacky, and hold securely in place until adhesive has cured. Use shims, clamps, wedges, or other devices as necessary to align face of partial replacement with face of backing stone.

G. Clean adhesive residue from exposed surfaces and patch chipped areas and exposed drill holes]as specified in "Stone Patching" Article.

3.7 STONE PLUG REPAIR

A. Remove cylindrical piece of damaged stone by core-drilling perpendicular to stone surface.

B. Prepare a replacement plug by core-drilling replacement stone. Use a drill sized to produce a core that fits into hole drilled in damaged stone, with only minimum gap necessary for adhesive. Cut and install plug so that, when it is set in final position, natural bedding planes match the orientation of bedding planes of the backing stone unless otherwise indicated.

C. Apply stone-to-stone adhesive according to adhesive manufacturer's written instructions. Coat bonding surfaces of existing stone and plug, completely filling all crevices and voids.

D. Apply plug flush with surrounding stone while adhesive is still tacky, and hold securely in place until adhesive has cured.

E. Clean adhesive residue from exposed surfaces.

3.8 STONE-FRAGMENT REPAIR

A. Carefully remove cracked or fallen stone fragment indicated to be repaired. Reuse only stone fragment that is in sound condition.

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B. Remove soil, loose particles, mortar, and other debris or foreign material from fragment surfaces to be bonded and from parent stone where fragment had broken off, by cleaning with stiff-fiber brush.

C. Pinning: Before applying adhesive, prepare for mechanical anchorage consisting of 1/4-inch-diameter, threaded stainless-steel pins set into 1/4-inch- diameter holes drilled at a 45-degree downward angle through face of fragment and into parent stone.

1. Center and space pins 3 to 5 inches apart and at least 2 inches from any edge. Insert pins at least 2 inches in parent stone and 2 inches in fragment, with end countersunk at least

3/4 inch from exposed face of fragment.

D. Concealed Pinning: Before applying adhesive, prepare for concealed mechanical anchorage consisting of 1/4-inch- diameter, threaded stainless-steel pins set into 1/4-inch- holes drilled into parent stone and into, but not through, the fragment.

1. Center and space pins 3 to 5 inches apart and at least 2 inches from any edge. Insert pins at least 2 inches in parent stone and 2 inches in fragment, but no closer than 3/4 inch from exposed face of fragment.

E. Apply stone-to-stone adhesive according to adhesive manufacturer's written instructions. Coat bonding surfaces of fragment and parent stone, completely filling all crevices and voids.

F. Fit stone fragment onto parent stone while adhesive is still tacky, and hold fragment securely in place until adhesive has cured. Use shims, clamps, wedges, or other devices as necessary to align face of fragment with face of parent stone.

G. Clean adhesive residue from exposed surfaces and patch chipped areas and exposed drill holes as specified in "Stone Patching" Article.

3.9 CRACK INJECTION

A. General: Comply with cementitious crack-filler manufacturer's written instructions.

B. Drill 1/4-inch- diameter injection holes as follows:

1. Transverse Cracks Less Than 3/8 inch Wide: Drill holes through center of crack at 12 to

18 inches o.c.

2. Transverse Cracks More Than 3/8 inch Wide: Drill holes through center of crack at 18 to

36 inches o.c.

3. Delaminations: Drill holes at approximately 18 inches (500 mm) o.c., both vertically and horizontally.

4. Drill holes 2 inches deep.

C. Clean out drill holes and cracks with compressed air and water. Remove dirt and organic matter, loose material, sealants, and failed crack repair materials.

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D. Place plastic injection ports in drilled holes, and seal face of cracks between injection ports with clay or other nonstaining, removable plugging material. Leave openings at upper ends of cracks for air release.

E. Inject cementitious crack filler through ports sequentially, beginning at one end of area and working to opposite end; where possible, begin at lower end of injection area and work upward.

Inject filler until it extrudes from adjacent ports. After port has been injected, plug with clay or other suitable material, and begin injecting filler at adjacent port, repeating process until all ports have been injected.

F. Clean cementitious crack filler from face of stone before it sets, by scrubbing with water.

G. After cementitious crack filler has set, remove injection ports, plugging material, and excess filler. Patch injection holes and surface of cracks as specified in "Stone Patching" Article.

3.10 STONE PATCHING

A. Patch the following stone units unless another type of repair or replacement is indicated:

1. Units indicated to be patched.

2. Units with holes.

3. Units with deterioration.

B. Remove deteriorated material, and remove adjacent material that has begun to deteriorate.

Carefully remove additional material so patch does not have feathered edges but has square or slightly undercut edges on area to be patched and is at least 1/4 inch thick, but not less than as recommended in writing by patching compound manufacturer.

C. Mask adjacent mortar joint or rake out for repointing if patch extends to edge of stone unit.

D. Mix patching compound in individual batches to match each stone unit being patched. Combine one or more colors of patching compound, as needed, to produce exact match.

E. Brush-coat stone surfaces with slurry coat of patching compound according to manufacturer's written instructions.

F. Place patching compound in layers as recommended in writing by patching compound manufacturer, but not less than 1/4 inch or more than 2 inches thick. Roughen surface of each layer to provide a key for next layer.

1. Simple Details: Trowel, scrape, or carve surface of patch to match texture and surrounding surface plane or contour of the stone. Shape and finish surface before or after curing, as determined by testing, to best match existing stone.

2. Carved Details: Build patch up 1/4 inch above surrounding stone, and carve surface to match adjoining stone after patching compound has hardened.

G. Keep each layer damp for 72 hours or until patching compound has set.

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H. Remove and replace patches with hairline cracks or that show separation from stone at edges, and those that do not match adjoining stone in color or texture.

3.11 FINAL CLEANING

A. After mortar has fully hardened, thoroughly clean exposed stone surfaces of excess mortar and foreign matter; use wood scrapers, stiff-nylon or -fiber brushes, and clean water applied by low-pressure spray.

1. Do not use metal scrapers or brushes.

2. Do not use acidic or alkaline cleaners.

B. Clean adjacent nonstone surfaces. Use detergent and soft brushes or cloths.

C. Remove masking materials, leaving no residues that could trap dirt.

D. Sweep and rake adjacent pavement and grounds to remove mortar and debris. Where necessary, pressure-wash pavement surfaces to remove mortar, dust, dirt, and stains.

3.12 FIELD QUALITY CONTROL

A. Testing Agency: Owner will engage qualified testing agencies to perform tests and inspections.

Allow inspectors use of lift devices and scaffolding, as needed, to perform inspections.

B. Architect's Project Representatives: Architect will assign Project representatives to help carry out Architect's responsibilities at the site, including observing progress and quality of portion of the Work completed. Allow Architect's Project representatives use of lift devices and scaffolding, as needed, to observe progress and quality of portion of the Work completed.

C. Notify [testing agency] [and] [Architect's Project representatives] in advance of times when lift devices and scaffolding will be relocated. Do not relocate lift devices and scaffolding until

[inspectors] [and] [Architect's Project representatives] have had reasonable opportunity to make inspections and observations of work areas at lift device or scaffold location.

3.13 STONE-WASTE DISPOSAL

A. Salvageable Materials: Unless otherwise indicated, excess stone materials are Contractor's property.

B. Stone Waste: Remove stone waste and legally dispose of off Owner's property.

END OF SECTION 040342

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SECTION 040343 - HISTORIC STONE MASONRY REPOINTING

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

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

Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section includes historic treatment work consisting of repointing stone masonry joints with mortar.

B. Related Requirements:

1. Section 040343 – Historic Stone Masonry Repair.

1.3 UNIT PRICES

A. Work of this Section is affected by unit prices specified in Section 012200 "Unit Prices."

1. Unit prices apply to additions to and deletions from Work as authorized by Change

Orders.

1.4 DEFINITIONS

A. Low-Pressure Spray:

1. Pressure: 100 to 400 psi.

2. Flow Rate: 4 to 6 gpm

B. Rift: The most pronounced direction of splitting or cleavage of a stone. Rift may be obscure in igneous rocks such as granite. Often it is obvious, as with bedding planes in many sedimentary stones.

1.5 PREINSTALLATION MEETINGS

A. Preinstallation Conference: Conduct conference on historic masonry repair and repointing at

Project Site.

1. Review methods and procedures related to repointing historic stone masonry including, but not limited to, the following:

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a. Verify historic treatment specialist's personnel, equipment, and facilities needed to make progress and avoid delays.

b. Materials, material application, sequencing, tolerances, and required clearances.

c. Quality-control program.

d. Stone historic treatment program.

e. Coordination with building occupants.

1.6 SEQUENCING AND SCHEDULING

A. Order sand, portland cement, and lime for pointing mortar immediately after approval of mockups. Take delivery of and store at Project site a sufficient quantity to complete Project.

B. Work Sequence: Perform stone historic treatment work in the following sequence, which includes work specified in this and other Sections:

1. Remove plant growth.

2. Inspect for open mortar joints and permanently or temporarily point them before cleaning to prevent the intrusion of water and other cleaning materials into the wall.

3. Clean stone.

4. Rake out mortar from joints surrounding stone to be replaced and from joints adjacent to stone repairs along joints.

5. Repair…