1/1

ITEM NO. 1 MOBILIZATION

WORK: Under this Item, the Contractor shall furnish and set up all MOBILIZATION facilities in accordance with the specifications, to include their necessary general plant, including shops, storage areas, office, and such sanitary and other facilities as are required by City, State, or Federal law or regulation.

Unless otherwise provided, the cost of required insurance, bonds and/or any other similar significant initial expense required for the initiation of the Contract Work shall be included in this item.

MATERIALS: Such materials which are required that are not to be a part of the completed Contract

Work shall be as determined by the Contractor and shall conform to any pertinent City, State, or Federal law, regulation, or code.

METHOD: The Work under this item shall be done in a safe and workmanlike manner and shall conform to any/all pertinent City, State or Federal laws, regulations, or codes. Good housekeeping consistent with safety shall be maintained.

MEASUREMENT AND PAYMENT: For performing the work of MOBILIZATION in accordance with the specifications, the Contractor shall receive the LUMP SUM price bid.

The price bid shall be a LUMP SUM for MOBILIZATION and shall include the cost of all work, labor and materials including furnishing and maintaining services, plant, or other facilities noted in this specification, to the extent and at the time the Contractor deems them necessary for its operations, consistent with the requirements of this item and the Contract.

The LUMP SUM price bid for Mobilization shall be payable to the Contractor whenever ten (10%) percent of the Contract Work has been completed by the Contractor. For the purposes of this item, ten

(10%) percent of the Contract Work shall be considered complete when the total of payments earned, as reflected by estimates of work done, not including the amount bid for this item, shall exceed ten (10 %) percent of the total amount of the Contractor's bid for the Contract.

A) If the Contract requires performance and payment bonds:

The LUMP SUM price bid for this item shall not exceed six (6%) percent of the total contract bid price for all items excluding the price bid for this item. If the Contract includes add alternate items, the price bid for Mobilization may not exceed six percent (6%) of the total contract bid price for the base bid items only, excluding the price bid for this item and the add alternate items.

B) If the Contract does not require performance and payment bonds:

The LUMP SUM price bid for this item shall not exceed four (4%) percent of the total Contract bid price for all items excluding the price bid for this item. If the Contract includes add alternate items, the price bid for Mobilization may not exceed four percent (4%) of the total contract bid price for the base bid items only, excluding the price bid for this item and the add alternate items.

In the event the price bid for this item exceeds the limit established by the applicable criteria set forth in paragraph A or B above, the City will reduce this item’s bid price and adjust the total contract bid price accordingly to account for such reduction.

END OF PAGE

Rev. 2/7/2019 STANDARD

1/2

ITEM NO.2 CONSTRUCTION SIGN ON FENCE

ITEM NO.N/A CONSTRUCTION SIGN ON FRAME

WORK: Under this Item, the Contractor shall furnish, erect, and maintain a CONSTRUCTION SIGN in accordance with the plans and specifications.

MATERIALS: The sign shall be a vinyl film four-color image photo transfer laminated on M.D.O. board. Over lamination will not be required. All plywood shall be one-half inch (1/2") thick Douglas Fir, exterior grade, five (5) plies. The front side of the sign shall be a Medium Density Overlay (M.D.O.) which is plywood with a resin impregnated fiber overlay. Reverse side to be grade 'C' or better. Size of sign shall be seventy-two inches by forty-eight inches (72" x 48"), six feet by four feet ( 6'-0" x 4'-0") as shown on the drawings. All edges and back shall be sealed with one coat of exterior grade primer. Color of primer to be white unless otherwise directed.

A compact disc with the custom image in Illustrator 8.0 format (50% actual size) will be provided to the Contractor at the pre-construction meeting.

The Construction Sign shall be as manufactured by Sign Design Group of NY, Inc., LIC, N.Y, Manhattan Signs and Designs, New York, N.Y., Mineola Signs, Mineola, N.Y., or approved equal.

INSTALLATION & LOCATION: The Construction Sign shall be installed either on the fence at the Park entrance, or a wood frame as indicated on the contract drawings. Construction Sign shall be installed in a true vertical position and mounted to fence with four (4) one-half (1/2”) inch diameter x six (6”) inch long galvanized lag bolt, bolted to additional two (2) 2 x 4 lumber slats in the back of the fence as shown on the standard detail. For projects where NYC DOB approval is required, sign shall be installed per NYC Building Code Section 3301.9 and Local Law 47 of 2013.

The DOB permit (where required) shall be laminated or encased in a plastic covering to protect it from the elements or shall be printed directly onto the project information panel and posted where shown.

1. For Construction Sign on Fence: Installation shall be as per Parks standard detail, except where NYC DOB approval is required.

A. On Steel Fence, mounted over upper horizontal steel bar.

B. On Chain Link Fence, mounted over horizontal brace or continuous midrail.

C. On Construction Fence, mounted between vertical posts, with extra post at no more than 4’-0” o.c. (see Construction Fence Spec).

2. For Construction Sign on Frame: Installation shall be as per standard detail.

MAINTENANCE: The Contractor shall maintain the sign during the life of the contract, in a condition satisfactory to the Engineer. Maintenance of the construction sign includes, but is not limited to, restoration of any portion of the sign that has been defaced by graffiti, or any necessary changes to text as required by the Engineer. Modifications to the text and names printed on the sign may occur throughout the life of the contract. Modifications such as name revisions, dignitary title changes, completion dates, and text revisions may be required to maintain the sign in accordance with current information. All modification to the text on the construction sign shall

2/2 match the font and format of the original text. The Contractor shall attach the modified text to the construction sign in a manner that will not peel off. The Contractor shall install custom information on the sign within forty-eight (48) hours of direction by the Engineer. Permit (where required) and protective laminate shall be maintained in good condition.

NOTE: Upon completion of the contract, the sign shall be removed by the Contractor.

MEASUREMENT AND PAYMENT: For each CONSTRUCTION SIGN of each type furnished and erected in accordance with the plans, specifications, and directions of the Engineer, the Contractor shall receive the unit price bid.

The price bid shall be a unit price for EACH Construction Sign furnished and erected and shall include the cost of all labor, materials and equipment necessary to complete the work, including hardware for mounting on fence or frame and continuous maintenance, all in accordance with the plans and specifications, to the satisfaction of the Engineer.

Payment for work performed under this item shall be made as follows:

50% - upon initial installation 50% - at Substantial Completion, having maintained the construction sign until

Final Acceptance of the contract to the satisfaction of the Engineer.

END OF PAGE

Rev. 06/8/2021 STANDARD

1/1

ITEM NO. 05 DRAIN DOME REPLACEMENT

WORK: Under this Item, the Contractor shall furnish and install DRAIN DOME

REPLACEMENT in accordance with the plans, specifications, and directions of the Engineer

Provide replacement in kind of existing damaged Areaway drain cover.

MATERIALS: Cast Iron to match existing. Note this is the “drain dome” or “strainer” portion of an existing storm drain (also known as Cast-Iron, Large-Sump, General-Purpose Roof Drain).

The new drain shall be compatible with the existing storm drain. Verify dimension in filed.

MANUFACTURERS: Acceptable manufacturers included Zurn Plumbing Products Group, Smith, Jay R. Mfg. Co., and Josam Company

INSTALLATION & LOCATION: Remove existing damaged Areaway drain dome and install new. There are multiple Areaways drains serving the building, confirm with Resident Engineer the exact Drain Dome to be replaced.

SUBMITTALS:

Catalog Cuts: to be submitted for review and approval prior to ordering of material

MEASUREMENT AND PAYMENT:

For each DRAIN DOME REPLACEMENT furnished and installed under this contract complete in accordance with the plans, specifications and directions of the Engineer, the Contractor shall receive the UNIT PRICE bid.

The price bid shall be a unit price for EACH for DRAIN DOME REPLACEMENT and shall include the cost of all work, labor and materials including list all items included in the payment of this item (usually it’s the same as the items listed under materials) and all other incidental expenses necessary to complete the work in accordance with the plans and specifications, to the satisfaction of the Engineer.

END OF PAGE

Rev. 04/28/2022

Tennis House Restoration Masonry Cleaning – 040140-1

ITEM NO. 6 MASONRY CLEANING - LIMESTONE

ITEM NO. 7 MASONRY CLEANING - GRANITE

ITEM NO. 8 MASONRY CLEANING - BRICK

ITEM NO. 9 MASONRY CLEANING - FERROUS STAIN

ITEM NO. 10 MASONRY CLEANING - OIL STAIN

SECTION 040140 – MASONRY CLEANING

PART 1 – GENERAL

1.01 GENERAL REQUIREMENTS

A. Work of this Section, as shown or specified, shall be in accordance with the requirements of the Contract Documents.

1.02 DESCRIPTION

A. Work of this Section includes all labor, materials, equipment, and services necessary to complete the work of masonry cleaning as shown on the Drawings, as specified herein, and as may be required by conditions and authorities having jurisdiction, including, but not limited to, the following:

1. Cleaning general soiling from granite masonry using chemical cleaners and pressurized water rinsing (Item No. 7).

2. Cleaning general soiling from limestone masonry chemical cleaners and pressurized water rinsing (Item No. 6).

3. Cleaning general soiling from brick masonry using pressurized water rinsing (Item No. 8).

4. Removing ferrous stains from masonry using chemical removers and water rinsing (Item No.9).

5. Removing oil stains from masonry using chemical removers and water rinsing (Item No.10).

6. Protecting window openings, door openings, and other openings in building exterior from water entry before beginning masonry cleaning.

B. Related Work Specified Elsewhere

Tennis House Restoration Masonry Cleaning – 040140-2

1. Masonry Pointing – Section 040513

2. Masonry Restoration – Section 040343

3. Mosaic Tile Restoration – Section 093233

4. Terrazzo Floor Tile – Section 096616

1.03 QUALITY ASSURANCE

A. Masonry Cleaning Specialist: Award masonry cleaning work to a firm regularly engaged in cleaning masonry on historic buildings that can demonstrate to Owner’s satisfaction that, within previous ten years, the firm has successfully completed at least three projects similar in scope and type to work required on this Project involving buildings designated as Landmarks by the New York City Landmarks Preservation Commission, buildings designated as Landmarks by other local governmental authorities, buildings listed in the National Register of Historic Places, or buildings listed in a State Register of Historic Places under the direction of preservation authorities.

B. Laws, Codes, and Regulations: Work of this Section shall comply with applicable federal, state, and local laws, codes, and regulations.

C. Referenced Standards: Comply with applicable requirements and recommendations of the latest editions of the referenced standards listed herein, except as modified by more stringent requirements of the Contract Documents and of applicable laws, codes, and regulations.

1. American Institute for Conservation of Historic & Artistic Works (AIC), Code of Ethics and Guidelines for Practice.

2. United States Secretary of the Interior, Standards for Rehabilitation and Guidelines for Rehabilitating Historic Buildings.

3. Secretary of the Interior’s Standards for the Treatment of Historic Properties

D. Access for Observation and Approvals: Provide Architect access on a continuing basis to locations on which mock-ups are being carried out, on which work is ongoing, and where work has been completed to allow for observation and approvals. Provide manpower and equipment to facilitate observation and approvals.

E. Knowledge of Site and Project Conditions: Before submitting bid, Bidders shall make themselves thoroughly familiar with the Drawings and Specifications, with the scope of this Project, and with conditions at the Project site relating to requirements of this Section and limitations under which the work will be performed and shall determine or verify dimensions and quantities. Submission of a bid shall be considered conclusive evidence that Contractor is thoroughly familiar with Project requirements and site conditions and limitations.

1.04 SUBMITTALS

A. General: Submit the following in compliance with the requirements of the Contract

Tennis House Restoration Masonry Cleaning – 040140-3

Documents. Revise and resubmit each item as required to obtain Architect’s approval.

B. Qualification Data: Qualification data for firm and personnel specified in “Quality Assurance” Article that demonstrates that both firm and personnel have capabilities and experience complying with requirements specified.

C. Work Description: Prior to any masonry cleaning work on site, submit detailed description of proposed materials and procedures for each substrate and condition requiring masonry cleaning. Do not begin work on site until work description has been approved in writing. Description for each condition shall include, but not be limited to:

1. Cleaning: Materials, methods, tools, and equipment for each type of masonry cleaning specified herein.

2. Protection: Description, including drawings, of proposed materials and methods of protection for preventing harm, damage, and deterioration caused by work of this Section to persons (whether involved in the Work or not); building elements, materials, and finishes; surrounding plants, landscape, and site; and the environment (including air and water).

D. Product Data: Submit manufacturer’s published technical data for each product to be used in work of this Section including material description and chemical composition (ingredients and proportions).

E. Schedule of Masonry Cleaning: Prior to commencing masonry cleaning operations, submit a complete detailed schedule for testing and mock-ups and for completion of masonry cleaning.

F. Waste Disposal Program: Prior to commencing masonry cleaning operations, submit a written description of proposed materials and methods for collection, treatment, and disposal of wastes resulting from masonry cleaning operations.

1.05 TESTING

A. General: Before beginning mock-ups or general masonry cleaning work, test cleaning methods on sample areas to determine most effective product and procedure for cleaning each. Do not proceed with mock-ups or general masonry cleaning work until Architect has approved results of testing in writing.

1. Perform tests in locations directed by Architect.

2. Notify Architect 48 hours prior to start of testing.

3. Architect will monitor testing. No testing done in absence of Architect will be accepted.

4. Use crew that will perform the work and follow requirements of this Section.

5. All materials, dilutions, dwell times, and procedures are subject to modification by Architect during testing process. Architect will choose products and procedures to be used for cleaning masonry and for removing

Tennis House Restoration Masonry Cleaning – 040140-4 soiling and coatings based on results of test panels. Modifications of sequence, chemical dilution, substitute reagents, and equivalent procedures shall be executed at no additional cost.

a. Do not apply products to masonry surfaces without verifying dilution with Architect.

6. After test panels are complete, allow seven days for thorough drying and appearance of possible adverse effects prior to final evaluation.

7. Perform additional testing as necessary to determine proper chemicals and procedures, including dilutions and dwell times, to Architect’s satisfaction.

B. Provide the Following Test Panels

1. Removing Ferrous Stains from Masonry Using Chemical Removers and Water Rinsing: Prepare at least one test panel, 1-sq.-ft, on each type of masonry from which ferrous stains are to be removed using each chemical remover specified for testing. Provide additional test panels using different products, application methods, dwell times, and removal methods as directed.

2. Removing Oil Stains from Masonry Using Chemical Removers and Water Rinsing: Prepare at least one test panel, 1-sq.-ft., on each type of masonry from which copper stains are to be removed using each chemical remover specified for testing. Provide additional test panels using different products, application methods, dwell times, and removal methods as directed.

1.06 MOCK-UPS

A. General: Following completion of testing and before beginning general masonry cleaning work, prepare mock-ups to provide standards for work of this Section. Do not proceed with masonry cleaning until Architect has approved mock-ups.

1. Locate mock-ups as directed by Architect.

2. Notify Architect 48 hours prior to start of each mock-up.

3. Architect will monitor mock-ups. Mock-ups not performed in presence of Architect will be rejected.

4. Use crew that will perform the work and follow requirements of this Section.

5. Repeat mock-ups as necessary to obtain Architect’s approval.

6. Allow mock-ups to dry for seven days prior to review. Notify Architect when mock-ups are ready for inspection.

B. Prepare the Following Mock-Ups

1. Cleaning General Soiling from Granite Masonry: One location, 9 sq. ft.

2. Cleaning General Soiling from Limestone Masonry: One location, 9 sq. ft.

Tennis House Restoration Masonry Cleaning – 040140-5

3. Cleaning General Soiling from Brick Masonry: One location, 9 sq. ft.

4. Removing Ferrous Stains from Masonry: One location, 2 sq. ft

5. Removing Oil Stains from Masonry: One location, 2 sq. ft

6. Sealing Window Openings To Prevent Water Entry: One entire window.

1.07 DELIVERY, STORAGE, AND HANDLING

A. Deliver products to site in manufacturer’s original containers with labels identifying manufacturer, product, ingredients, instructions for use, and safety precautions. Do not deliver products until MSDS sheets for products are available on site.

B. Deliver, store, and handle products and materials to prevent damage, deterioration, degradation, and intrusion of foreign material.

C. Discard and remove from site deteriorated materials, contaminated materials, and products that have exceeded their expiration dates. Replace with fresh materials.

1.08 PROJECT CONDITIONS

A. Refer to General Conditions for building, site, and surroundings protection.

B. Surfaces To Receive Work: The Drawings are two-dimensional representations of three-dimensional objects and do not show all surfaces of building components on which work is to be performed, including surfaces concealed from view behind objects shown; surfaces of projections, reveals, returns, and other elements perpendicular to or at an oblique angle to surfaces shown; concealed surfaces of profiled members and of ornament; and surfaces of profiled members and of ornament not drawn in detail. Perform work on surfaces of projections, reveals, returns, profiled members, and ornaments associated with surfaces indicated to receive work and on surfaces of building components concealed behind building components shown. It is the specific intent of the Contract Documents to include work on all surfaces within Project area, whether or not shown on the Drawings, except as specifically indicated otherwise.

E. Coordination

1. Sequence: Clean masonry before beginning masonry restoration as specified in Section 040343 – “Masonry Restoration,” except as specifically indicated otherwise.

2. Staging: Schedule and stage masonry cleaning so that no runoff from masonry cleaning operations comes in contact with previously cleaned masonry.

F. Preconstruction Meeting: Convene a preconstruction meeting to discuss masonry cleaning and its effect on adjacent elements, materials, and finishes.

1.09 ENVIRONMENTAL REQUIREMENTS

A. Use of Water: Do not perform masonry cleaning work that will wet masonry

Tennis House Restoration Masonry Cleaning – 040140-6 materials or cause them to be wet when ambient temperature is below 40 deg F or when temperature of air or masonry is expected to drop below 40 deg F within 72 hours. Do not begin work when any part of wall or any materials are frozen or subject to freezing.

1.10 COLLECTION AND DISPOSAL OF WASTE PRODUCTS

A. General: Collect, contain, test, and dispose of solid and liquid wastes in accordance with applicable federal, state, and local laws and regulations.

1.11 POSSIBLE HARMFUL EFFECTS OF BIRD MATTER

A. Prevent workers without appropriate protection from touching, ingesting, inhaling, or contacting in any other way bird droppings and other bird related matter.

B. Handle and dispose of bird related matter in compliance with applicable federal, state, and local laws and regulations and in a manner that does not threaten health and welfare of public and workers.

PART 2 – PRODUCTS

2.01 MANUFACTURERS AND SUPPLIERS

A. General: Provide products by the following manufacturers or approved equals.

1. ProSoCo, Inc., 3741 Greenway Circle, Lawrence, KS 66046 (800-255-4255).

2.02 CLEANING MATERIALS FOR WATER, DETERGENT AND CHEMICAL

CLEANING

A. General: Provide the following products for use in testing for cleaning substrates and conditions indicated. Test using dilutions as specified by Architect. Provide products selected during testing for use in mock-ups and for use in cleaning building and at dilutions as selected and approved by Architect in each case at no additional cost to Owner.

B. Cleaners Removing General Soiling from Limestone Masonry. Provide the following or approved equal:

1. Klean N’ Release Cleaner, manufactured by ProSoCo, Inc.

C. Cleaners Removing General Soiling from Granite Masonry. Provide the following or approved equal:

1. 2010 All Surface Cleaner, manufactured by ProSoCo, Inc.

D. Removers for Testing for Removing Ferrous Stains from Masonry Substrates: Test each of the following, or approved equal:

1. Artisan Light Duty Rust Remover, as manufactured by Chemique, Inc.

2. Sure Klean Ferrous Stain Remover, manufactured by ProSoCo, Inc.

Tennis House Restoration Masonry Cleaning – 040140-7

E. Removers for Testing for Removing Oil Stains from Masonry Substrates: Test each of the following or approved equal:

1. DriKlean peelable cleaner, manufactured by ProSoCo, Inc.

2. Oil & Grease Stain Remover, manufactured by ProSoCo, Inc.

F. Water for Chemical Cleaning, Pressure Rinsing, and Other Work of this Section:

Clean, potable, free of oils, acids, alkalis, salts, organic matter, soluble and insoluble iron, and other substances detrimental to surfaces being cleaned and non-staining.

1. Source: Subject to requirements specified, water may be obtained from city water supply.

2. Distribution: Pump water to locations where work of this Section is being performed at pressure and flow rate required for optimum cleaning using each process.

2.03 EQUIPMENT FOR WATER RINSING

A. General: Provide all equipment and accessories to distribute water at pressures and flow rates required for masonry cleaning.

B. Pressure Pumps: Pressure pumps capable of producing water flow at a rate of 6 gallons per minute at a pressure of 800 psi at nozzle on end of hose. Pumps, or a combination of pumps plus pressure reducing valves, shall have capability of providing water at a steady pressure and flow rate at all pressures from 100 psi to 800 psi. Pumps shall have working pressure gauges.

C. Particulate Filter: Provide a 5-micron particulate filter in line with water supply. All water used for masonry cleaning shall be filtered.

D. In-line Pressure Gauges: Each water line used for pressure rinsing shall have a working pressure gauge within 15 feet of nozzle used for rinsing.

E. Spray Nozzles for Pressure Rinsing: Nozzles shall be of nonferrous metal and shall have a minimum 15-degree fan tip.

2.04 MISCELLANEOUS MATERIALS

A. Sealant: Manufacturer’s standard one part acrylic latex removeable sealant. Use exclusively for temporary sealing of cracks and joints around penetrations during masonry cleaning work.

1. Do not use sealant containing silicone or other elastomeric product.

B. Protection Materials: Provide materials recommended by cleaner manufacturers for products to be used that will protect from damage caused by chemicals without causing damage to materials to be protected.

1. Plastic Sheeting: Polyethylene sheeting, 6 mils thick minimum.

Tennis House Restoration Masonry Cleaning – 040140-8

C. Brushes: Natural fiber bristle or synthetic fiber bristle only. No metal bristle brushes are permitted.

PART 3 – EXECUTION

3.01 GENERAL MASONRY CLEANING REQUIREMENTS

A. General: These requirements apply to all work of this Section.

B. Areas To Be Cleaned: Masonry surfaces to be cleaned to remove general soiling and heavy soiling are designated on Drawings.

1. Stains, Coatings, and Other Substances to be Removed: Locations of stains, coatings, and other substances to be removed from masonry are designated on Drawings insofar as possible. Some stains, coatings, and other substances may not be apparent until masonry has been cleaned to remove general and heavy soiling. Clean to remove all substances as specified herein and as directed by Architect.

C. Masonry Cleaning Progress: Clean masonry systematically in full-height, top-to-bottom sections of areas to be cleaned.

1. Brick Masonry Cleaning with Water: Begin masonry cleaning using water at top of section to be cleaned and proceed to bottom of section before moving to adjacent section.

E. Water Pressure and Flow Rate: Limit water pressure and flow rates to maximum pressures specified herein and to lower pressures as required to avoid damaging masonry, metals, sealants, and other materials and finishes.

1. Pressure: 400 psi or less as required to avoid damage to materials being cleaned.

2. Flow Rate: 6 gallons per minute.

3. Nozzle Position: Hold nozzle at a uniform distance from and angle to masonry surface as determined by testing and confirmed by mock-ups to provide optimum cleaning without damaging masonry surface. Nozzle shall be at least 12 inches from masonry surface.

4. Adjustments: If any building material is damaged or deteriorated by water rinsing, immediately cease work. Do not resume pressure rinsing until water pressure and flow rate have been adjusted to avoid damage to building materials.

G. Uniform Cleaning: Clean masonry to achieve even, uniform surfaces so that edges, corners, crevices, profiles, recessed areas, and ornament are cleaned to the same extent as flat surfaces.

H. Adjustment and Alteration: Masonry cleaning procedures, including cleaning chemical, chemical dilution, dwell time, and application and removal procedures may be adjusted and/or altered by Architect based on site conditions.

Tennis House Restoration Masonry Cleaning – 040140-9

I. Completion of Masonry Cleaning: Cleaned masonry shall match approved mock-ups. Areas are subject to additional cleaning as directed by Architect in order to match mock-ups, at a maximum of three times. Work of masonry cleaning on each surface shall not be considered complete until Architect has inspected surface and so notified Contractor in writing.

3.02 TESTING

A. General: Perform testing under direction of Architect following requirements of Article “Testing,” above, to determine most appropriate products and procedures for cleaning each substrate before preparing mock-ups or beginning general masonry cleaning work.

3.03 MOCK-UPS

A. General: Provide mock-ups under direction of Architect following requirements of “Mock-Ups” Article, above, to confirm products and procedures selected during testing and to provide standards for evaluation of the masonry cleaning work.

3.04 CLEANING SOILING FROM LIMESTONE AND GRANITE MASONRY USING

CHEMICAL REMOVER AND PRESSURIZED WATER RINSING

A. General: Clean masonry free of soiling using cleaning chemical selected during testing followed by pressurized water rinsing. Cleaned masonry shall match approved mock-up to Architect’s satisfaction.

B. Cleaner Application and Removal: Apply and remove cleaner following method of application and dwell times confirmed during mock-ups. Scrub surface gently with fiber bristle brushes. Rinse surface thoroughly using water at a pressure of 600 psi and flow rate of 6 gpm.

1. Limestone Cleaning: Apply product at a 1:1 dilution and allow to dwell for 10 minutes.

2. Granite Cleaning: Apply product at a 1:1 dilution and allow to dwell for 15 minutes.

C. Additional Cleaning: Repeat above procedure as necessary to achieve uniformly clean masonry surface matching standard of approved mock-up.

3.05 REMOVING FERROUS STAINS FROM MASONRY USING CHEMICAL STAIN

REMOVERS AND WATER RINSING

A. General: Remove ferrous stains from masonry using chemical stain remover and form of stain remover (liquid, gel, and/or poultice) selected during testing and confirmed during mock-up to achieve masonry surface free of ferrous stains matching approved mock-up to Architect’s satisfaction.

B. Remover Application and Removal: Apply remover following method of application and dwell time determined during testing and confirmed during mock-ups. Remove chemical following manufacturer’s directions. Rinse surface thoroughly using water at a pressure of 600 psi and flow rate of 6 gpm, overlapping passes slightly.

Tennis House Restoration Masonry Cleaning – 040140-10

C. Additional Removal: Repeat above procedure as necessary to achieve uniformly clean masonry free of ferrous stains with surface matching standard of approved mock-up.

3.06 REMOVING OIL STAINS FROM MASONRY USING CHEMICAL STAIN

REMOVERS AND WATER RINSING

A. General: Remove oil stains from masonry using chemical stain remover and form of stain remover (liquid, gel, and/or poultice) selected during testing and confirmed during mock-up to achieve masonry surface free of copper stains matching approved mock-up to Architect’s satisfaction.

B. Remover Application and Removal: Apply remover following method of application and dwell time determined during testing and confirmed during mock-ups. Remove chemical following manufacturer’s directions. Rinse surface thoroughly using water at a pressure of 600 psi and flow rate of 6 gpm, overlapping passes slightly.

C. Additional Removal: Repeat above procedure as necessary to achieve uniformly clean masonry free of copper stains with surface matching standard of approved mock-up.

3.07 ADJUSTMENT AND PROTECTION

A. Reclean masonry surfaces that do not have an even, uniform clean appearance matching approved mock-ups to achieve uniformly clean surfaces matching approved mock-ups.

B. Protect cleaned surfaces from dirt and soiling from other than normal atmospheric pollution until Project completion. Reclean surfaces that become dirty or soiled to Architect’s satisfaction at no additional cost to Owner.

PART 4 – MEASUREMENT AND PAYMENT

4.01 GENERAL REQUIREMENTS

A. The price bid for each Item shall be in the units noted for each individual Item, and shall include the cost of furnishing all labor, material, and equipment, and of all other incidental expenses necessary to complete the work of these Items in accordance with the drawings and specifications to the satisfaction of the Architect. If additional quantities are identified during construction for the Items which are not lump sum, the unit price established during the bid will be applied to the new quantity.

4.02 SCOPE ITEMS

ITEM NO. 6 - MASONRY CLEANING - LIMESTONE

Cleaning general soiling from limestone masonry chemical cleaners and pressurized water rinsing

- Shall be measured as a Lump Sum

ITEM NO. 7 - MASONRY CLEANING – GRANITE

Cleaning general soiling from granite masonry using chemical cleaners and

Tennis House Restoration Masonry Cleaning – 040140-11 pressurized water rinsing

- Shall be measured as a Lump Sum

ITEM NO. 8 - MASONRY CLEANING - BRICK

Cleaning general soiling from brick masonry using pressurized water rinsing

- Shall be measured as a Lump Sum

ITEM NO. 9 - MASONRY CLEANING - FERROUS STAIN

Removing ferrous stains from masonry using chemical removers and water rinsing

- Shall be measured in Square Feet

ITEM NO. 9 - MASONRY CLEANING - OIL STAIN

Removing oil stains from masonry using chemical removers and water rinsing

- Shall be measured in Square Feet

END OF SECTION 040140

Tennis House Restoration Stone Masonry Restoration – 040343-1

ITEM NO. 15 MASONRY RESTORATION – REMOVE, SALVAGE, AND

REINSTALL UNITS

ITEM NO. 16 MASONRY RESTORATION – PIN CRACK REPAIR

ITEM NO. 17 MASONRY RESTORATION – STONE DUTCHMAN

ITEM NO. 18 MASONRY RESTORATION – PATCH REPAIR

ITEM NO. 19 MASONRY RESTORATION – GROUT CRACK REPAIR

ITEM NO. 25 MASONRY RESTORATION - SEALANT CRACK REPAIR

SECTION 040343 – MASONRY RESTORATION

PART 1 – GENERAL

1.01 GENERAL REQUIREMENTS

A. Work of this Section, as shown or specified, shall be in accordance with the requirements of the Contract Documents.

1.02 DESCRIPTION

A. The Work of this Section includes all labor, materials, equipment, and services necessary to complete the work of stone masonry restoration as shown on the Drawings and/or as specified herein and as may be required by conditions and authorities having jurisdiction, including, but not necessarily limited to, the following:

1. Removing, salvaging, and reinstalling loose or displaced stone units (Item No.15).

2. Repairing cracked stone units by pinning to secure stone units (Item No. 16).

3. Providing stone dutchman at areas of stone loss or deterioration (Item No.

17).

4. Providing patch repair at areas of stone loss or deterioration (Item No. 18).

5. Repairing cracks by injecting preformulated grout (Item No. 19).

6. Repairing cracks with sealant (Item No. 25).

B. Related Work Specified Elsewhere

1. Masonry Cleaning – Section 040140

Tennis House Restoration Stone Masonry Restoration – 040343-2

2. Masonry Pointing – Section 040513

3. Joint Sealants – Section 079200

1.03 QUALITY ASSURANCE

A. Masonry Restoration Specialist: Award stone masonry restoration to a firm regularly engaged in restoration of stone masonry on historic buildings that can demonstrate to Owner’s satisfaction that, within previous ten years, it has successfully completed at least three projects similar in scope and type to work required on this Project involving buildings designated as Landmarks by the New York City Landmarks Preservation Commission, buildings designated as Landmarks by other local governmental authorities, buildings listed in the National Register of Historic Places, or buildings listed in a State Register of Historic Places under the direction of preservation authorities.

C. Laws, Codes, and Regulations: Work of this Section shall comply with applicable federal, state, and local laws, codes, and regulations.

D. Referenced Standards: Comply with applicable requirements and recommendations of the latest editions of the referenced standards listed herein, except as modified by more stringent requirements of the Contract Documents and of applicable laws, codes, and regulations. In each case in which there is conflict between requirements of referenced standards; requirements of laws, codes, and regulations; and requirements of this Section, the most stringent or restrictive requirement shall govern.

1. ASTM International (ASTM)

a. ASTM C 144, Standard Specification for Aggregate for Masonry Mortar.

b. ASTM C 150, Standard Specification for Portland Cement.

c. ASTM C 207, Standard Specification for Hydrated Lime for Masonry Purposes.

d. ASTM C 270, Standard Specification for Mortar for Unit Masonry.

e. ASTM C 1713, Standard Specification for Mortars for the Repair of Historic Masonry.

E. Documentation of Existing Conditions: Document configurations and conditions of stone masonry units indicated to be restored before beginning restoration with photographs showing overall units and with additional detail photographs showing areas of damage and deterioration to be repaired if such areas are not clearly visible and understandable in the overall photographs of the stone units. Key detailed photographs to overall photographs and to drawings.

F. Access for Observation and Approvals: Provide Architect access on a continuing basis to locations on which mock-ups are being carried out, on which work is ongoing, and where work has been completed to allow for observation and approvals. Provide manpower and equipment to facilitate observation and approvals.

Tennis House Restoration Stone Masonry Restoration – 040343-3

G. Knowledge of Site and Project Conditions: Before submitting bid, Bidders shall make themselves thoroughly familiar with the Drawings and Specifications, with the scope of this Project, and with conditions at the Project site relating to requirements of this Section and limitations under which the work will be performed and shall determine or verify dimensions and quantities. Submission of a bid shall be considered conclusive evidence that Contractor is thoroughly familiar with Project requirements and site conditions and limitations.

H. Restoration of Damaged Masonry: Repair or replace broken, lost, and damaged masonry resulting from work of this Section to configuration and condition existing before work began to Architect’s satisfaction at no additional cost to Owner.

1.04 SUBMITTALS

A. General: Submit the following in compliance with the requirements of the Contract Documents. Revise and resubmit each item as required to obtain Architect’s approval.

B. Qualification Data: Qualification data for firm and personnel specified in “Quality Assurance” Article that demonstrates that both firm and personnel have capabilities and experience complying with requirements specified. For firm and foreman, provide a list of at least three completed projects similar in size and scope to the work required on this Project. For each project list project name, address, architect, conservator, supervising preservation agency, scope of contractor’s work, and other relevant information. Submit this information with the bid.

C. Work Description: Detailed description for each type of stone masonry restoration work to be performed. Do not begin work on site until Architect has approved Work Description in writing. Submit new written descriptive information. Description for each type of restoration on each material shall include, but not be limited to:

1. Materials and Procedures: Materials, methods, tools, and equipment to be used for each phase and task of stone masonry restoration work.

2. Protection: Description, including drawings and diagrams, of proposed materials and methods of protection for preventing harm, damage, and deterioration caused by work of this Section to persons (whether involved in the Work or not); building elements, materials, and finishes; surrounding landscape and site; and the environment (including air and water).

D. Product Data: Manufacturer’s published technical data for each product to be used in work of this Section including material description, chemical composition (ingredients and proportions), physical properties, recommendations for application and use, test reports and certificates verifying that product complies with specified requirements.

E. Shop Drawings: Dimensioned detailed scale drawings at appropriate scales to clearly describe stone masonry restoration; details of anchors and fasteners, 3-inches equals 1-foot scale, minimum. Submit newly prepared drawings showing site-verified conditions and materials.

1. Reinstalling Displaced and Loose Stone Units: Each unit. Show location of cramps and anchors.

Tennis House Restoration Stone Masonry Restoration – 040343-4

F. Samples

1. Granite to Match Existing Granite: 6-inch x 6-inch x 1-inch pieces, finished to match existing.

2. Limestone to Match Existing Limestone: 6-inch x 6-inch x 1-inch pieces, finished to match existing.

3. Mortar for Installing Dutchmen: 6-inch-long channel with custom color

4. Custom Patching Mortar for Patching Losses: 4-inch x 4-inch x 1-inch cured samples of each type and color of mortar required for approval of color and texture. Samples shall match existing adjacent clean stone in color and texture.

1.05 MOCK-UPS

A. General: Before beginning general stone masonry restoration work, prepare mock-ups to provide standards for work of this Section. Do not proceed with stone masonry restoration until Architect has approved mock-ups.

1. Locate mock-ups as directed by Architect.

2. Notify Architect 48 hours prior to start of each mock-up.

3. Architect will monitor mock-ups. Mock-ups not performed in presence of Architect will be rejected.

4. Use crew that will execute the work and follow requirements of this Section.

5. Allow mock-ups with mortar, composite patching mortar, cementitious grout, and other products containing cements and/or limes to dry for seven days to allow material to reach final color and allow potential problems to appear.

Notify Architect when mock-ups are ready for review.

6. Repeat mock-ups as necessary to obtain Architect’s approval.

7. Approved mock-ups will represent minimum standards for stone masonry restoration. Subsequent stone masonry restoration work that does not meet standards of approved mock-ups will be rejected.

B. Prepare the Following Mock-Ups

1. Removing, Salvaging, and Reinstalling Loose or Displaced Stone Units: One location.

2. Repairing Cracked Stone Units by Pinning to Secure Stone Units: One stone unit.

3. Providing Stone Dutchman at Areas of Stone Loss or Deterioration: One dutchman.

4. Providing Patch Repair at Areas of Stone Loss or Deterioration: One patch.

Tennis House Restoration Stone Masonry Restoration – 040343-5

5. Repairing Cracks by Injecting Preformulated Grout: One crack.

6. Repairing Cracks with Sealant: One crack.

1.06 PROJECT CONDITIONS

A. Refer to General Conditions for building, site, and surroundings protection.

B. Protection from Hazardous Materials: Protect workers and other persons from contact with hazardous materials resulting from work of this Section.

a. Silica: Use procedures necessary to protect workers and other persons from exposure to respirable crystalline silica. All work should be performed in compliance with applicable OSHA regulations, including but not limited to “Respirable Crystalline Silica Standard” (Title 29, Code of Federal Regulations (CFR) Section 1926.1153) and with other applicable state and local laws and regulations.

C. Surfaces To Receive Work: The Drawings are two-dimensional representations of three-dimensional objects and do not show all surfaces of building components on which work is to be performed, including surfaces concealed from view behind objects shown; surfaces of projections, reveals, returns, and other elements perpendicular to or at an oblique angle to surfaces shown; concealed surfaces of profiled members and of ornament; and surfaces of profiled members and of ornament not drawn in detail. Perform work on surfaces of projections, reveals, returns, profiled members, and ornaments associated with surfaces indicated to receive work and on surfaces of building components concealed behind building components shown. It is the specific intent of the Contract Documents to include work on all surfaces within Project area, whether or not shown on the Drawings, except as specifically indicated otherwise.

D. Dust: Use procedures necessary to generate as little dust as possible in the execution of work of this Section and to minimize dissemination of dust generated during work of this Section to greatest extent possible.

E. Debris Removal

1. Do not store or permit excess debris to accumulate on site.

F. Coordination: Coordinate work of this Section with work of other sections as necessary to ensure optimum performance of work of this Contract.

1. Clean stone masonry as specified in Section 040140 – “Masonry Cleaning” before beginning stone masonry restoration.

G. Preconstruction Meeting: Convene a preconstruction meeting to discuss stone masonry restoration and its effect on adjacent elements, materials, and finishes.

1.07 ENVIRONMENTAL REQUIREMENTS

A. General

1. Manufacturer’s Recommendations: Perform work only when temperature of products being used, temperatures of existing and new materials and

Tennis House Restoration Stone Masonry Restoration – 040343-6 surfaces, and temperature and humidity of air at Project site comply with manufacturer’s requirements and recommendations. Refer to relevant sections for environmental requirements for products and execution outlined in those sections.

PART 2 – PRODUCTS

2.01 STONE

A. Granite: Salvaged or new sound stone cleaned free of mortar, grout, dirt, and other contaminants and matching existing cleaned granite in physical and chemical properties and in color, texture, and other surface characteristics.

B. Limestone: Salvaged or new sound stone cleaned free of mortar, grout, dirt, and other contaminants and matching existing cleaned granite in physical and chemical properties and in color, texture, and other surface characteristics.

2.02 MORTAR AND PATCHING MATERIALS

A. Mortar Mix for Resetting Existing Stone Units and New Dutchman: Refer to Specification Section 040515 – Masonry Pointing for mortar materials.

1. 1 part by volume Portland cement (Type I)

2. 2 parts by volume hydrated lime (Type S)

3. 7 parts “00” sand

4. Oxide pigments as needed to match color of the original mortar in the stone masonry but not to exceed 7 percent of the weight of the cement.

2.03 PREFORMULATED MORTARS

A. Composite Patching Mortar for Granite

1. Single-component, cementitious, mineral-based mortar specifically manufactured for the restoration of natural stone. Provide Jahn M160 Granite and Bluestone Repair Mortar, available from Cathedral Stone Products, Inc., 7266 Park Circle Dr., Hanover, MD 21076 (800-684-0901), or approved equal, in custom colors to match colors of clean granite.

B. Composite Patching Mortar for Limestone

1. Single-component, cementitious, mineral-based mortar specifically manufactured for the restoration of natural stone. Provide Jahn M70 Limestone and Sandstone Repair Mortar, available from Cathedral Stone Products, Inc., 7266 Park Circle Dr., Hanover, MD 21076 (800-684-0901), or approved equal. Provide custom colors to match colors of clean limestone being patched.

2.04 PREFORMULATED GROUTS

A. Cementitious Injection Grout: Jahn M30 Injection Grout in custom color, available from Cathedral Stone Products, Inc., 7266 Park Circle Dr., Hanover, MD 21076

Tennis House Restoration Stone Masonry Restoration – 040343-7

(800-684-0901), or approved equal.

2.05 ANCHORS AND FASTENERS

A. General: Provide anchors, dowels, attachments, and fasteners as shown on approved shop drawings and of size and configuration suitable for use intended to secure sound, secure anchorage.

B. Anchors and Fasteners for Securing Stone Dutchmen: 1/4-inch- or 3/8-inch-diameter threaded stainless steel rod.

C. Anchors and Fasteners for Pinning and Securing Loose and Cracked Units

1. Pins: 1/4-inch-, 3/8-inch-, or 1/2-inch-diameter threaded stainless steel rod.

2. Micro-Pins: Orthopedic surgical bone screws of ASTM A 276 or ASTM A 666 Type 316 stainless steel or titanium (grade 2), 4 mm diameter, head no larger than 6 mm diameter with a recessed hex mortise, available from Diverse Surgical Supply, 7033 N. Fresno Street, Fresno, CA 93720 (866- 800-9414), or approved equal.

D. Anchors and Fasteners for Securing Stone Units

1. Anchors for Stone Units: 1-inch wide by 1/4-inch thick stainless steel strap anchors and/or strap anchors with stainless steel pins at least 1/4-inch in diameter in configuration shown on approved shop drawings.

2. Fasteners for Securing Anchors to Backup Masonry: Adhesive-fastening systems specifically designed to anchor elements to masonry and of size indicated on Drawings and approved shop drawings. Provide fasteners using stainless steel bolts and washers or threaded stainless steel rods and nuts and washers, screen tubes, appropriate structural adhesive, and accessories specifically designed for anchoring to masonry. Provide adhesive fastening systems HIT HY 200 Adhesive Anchors by Hilti, P.O. Box 21148, Tulsa, OK (800-879-8000) Hilti, P.O. Box 21148, Tulsa, OK (800-879-8000); Powers Fasteners, 2 Powers Lane, Brewster, NY 10509 (800-524-3244);

Ramset/Red Head, 1300 N. Michael Dr., Wood Dale, IL, 60191 (630-350- 0370); Simpson Strong-Tie, 26 International Street, Columbus, OH 43228 (614-876-8060); or approved equal. Furnish accessories for mixing and installation as recommended by manufacturer for optimum performance.

E. Pins to Secure Composite Patching over 2 Inches Deep: 1/8-inch-diameter threaded stainless steel rods.

2.06 ADHESIVES

A. Epoxy Adhesive for Stone Dutchman: High modulus, high strength, moisture-insensitive, low-viscosity epoxy adhesive complying with ASTM C 881, Types I, II, & V, Grade 2, Class C. Provide Sikadur 32, Hi-Mod, as manufactured by Sika Corp., 201 Polito Ave., Lyndhurst, NJ, 07071 (800-933-7452), or approved equal.

Modify viscosity as necessary to completely fill crack without loss of adhesive.

B. Epoxy Adhesive for Pinning and Installing Pins: High modulus, high strength, moisture-insensitive, high-viscosity epoxy adhesive complying with ASTM C 881, Tennis House Restoration Stone Masonry Restoration – 040343-8

Types I, II &IV, Grade 3, Classes B & C. Provide Sikadur 31, Hi-Mod Gel, as manufactured by Sika Corp., 201 Polito Ave., Lyndhurst, NJ, 07071 (800-933- 7452), or approved equal.

PART 3 – EXECUTION

3.01 DOCUMENTATION OF STONE MASONRY TO BE RESTORED

A. General: Document areas of stone masonry to be…