NEW YORK CITY DEPARTMENT OF DESIGN ♦ … skim coat at areas of repair. 2. Three coat gypsum plastering at areas of repair. B. Significance of the Manhattan Supreme Courthouse: The

NEW YORK CITY DEPARTMENT OFDESIGN ♦ CONSTRUCTION

FMS N o .- E l4-0008 Issue Date - 06/16/2016

SECTION 09 21 00

GYPSUM PLASTER

PART 1 - GENERAL

1.1 RELATED DOCUMENTS:

A. The following documents apply to all required work for the Project: (1) the Contract Drawings, (2) the Specifications, (3) the General Conditions, (4) the Addendum and (5) the Contract [City of New York Standard Construction Contract].

1.2 SUMMARY:

A. Work of this Section includes all labor, materials, equipment, and services necessary to complete the work of gypsum plaster as shown on the Drawings and specified herein, including, but not limited to, the following:

1. Plaster skim coat at areas of repair.

2. Three coat gypsum plastering at areas of repair.

B. Significance of the Manhattan Supreme Courthouse: The Manhattan Supreme Courthouse at 60 Centre Street is a designated NYC Landmark and a NYC Interiors Landmark. All exterior and interior work is to comply with the requirements of the New York City Landmarks Preservation Commission. Use all means necessary to avoid damaging historic building elements and materials to remain. All people working on this Project shall afford all historic materials and finishes the same care and protection as is normally given to new materials and finishes on a newly completed building.

1.3 QUALITY ASSURANCE:

A. Plaster Specialist: a firm experienced in application of gypsum plaster similar in type and scope to that required on this Project and employing skilled plasterers thoroughly familiar with materials and methods specified.

1. The contractor or subcontractor performing the work specified above must,within the last five (5) consecutive years prior to the bid opening, have successfully completed in a timely fashion at least three (3) projects similar in scope, size and type to the required work, based on architectural style, construction method and materials and age of building for this particular project. One such prior project of the three must have involved a landmarked building, as officially designated by the City, State or federal government.

B. Reference Standards

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1. US Gypsum Handbook

2. Gypsum Plaster Application Standard: ASTM C 842

3. Bonding Agent Reference Standard: ASTM C 631

C. Single-Source Responsibility: Obtain lath gypsum plaster from one source and by a single manufacturer.

D. Coordination of Work: Coordinate layout and installation of suspension system components for suspended ceilings with other work supported by or penetrating through ceiling.

1.4 SUBMITTALS:

A. General: Submit each item in this Article in compliance with the Conditions of the Contract and General Conditions. Revise and resubmit each item as required to obtain Commissioner’s approval.

B. Qualification Data: Submit qualification data for firm specified in “Quality Assurance” Article that demonstrates that firm has capabilities and experience complying with requirements specified.

C. Product Literature: Manufacturer’s published technical data for each product to be used in work of this Section including recommendations for application and use. Include test reports and certificates verifying that product complies with specified requirements.

D. Shop Drawings: Drawings detailing installation, showing location of all supporting framing, lath, and plaster applications. Include plans and sections, for all required work.

E. Work Plan: Detailed plan for executing the work of this Section. Include specific details of materials and procedures to be used.

F. Material Certificates: Submit certificate signed by manufacturer for each kind of plaster aggregate certifying that materials comply with requirements.

G. Mockups: Provide mockups as specified in Article “Mockups,” below.

1.5 MOCKUPS:

A. General: Before beginning general gypsum plaster work, prepare mockups to providestandards for work of this Section. Do not proceed with gypsum plaster work until Commissioner has approved mockups.

1. Locate mockups as directed by Commissioner.


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2. Notify Commissioner 48 hours prior to start of each mockup.

3. Commissioner will monitor mockups.

4. Perform mockups using crew that will be executing the work and following requirements of this Section to demonstrate full range of aesthetic effects and workmanship.

5. Repeat mockups as necessary to obtain Commissioner’s approval.

6. Protect approved mockups to ensure that they are without damage, deterioration, or alteration at time of Substantial Completion.

7. Approved mockups in undamaged condition at time of Substantial Completion may be incorporated into the Work.

8. Approved mockups will represent minimum acceptable standards for gypsum plaster work. Subsequent plaster work that does not meet standards of approved mockups will be rejected.

B. Prepare the Following Mockups:

1. Plaster skim coat repair: One location, minimum 2”x2”

2. Full Plaster replacement section: One location, min 2”x2”

1.6 DELIVERY, STORAGE, AND HANDLING:

A. Deliver materials to Project site in original packages, containers, or bundles, labeledwith manufacturer’s name, product brand name, and lot number.

B. Store materials inside, under cover, and dry, protected from weather, direct sunlight, surface contamination, aging, corrosion, and damage from construction traffic and other causes.

1.7 PROJECT CONDITIONS:

A. Environmental Requirements, General: Comply with requirements specified hereinand requirements of referenced plaster application standards and recommendations of plaster manufacturer for environmental conditions before, during, and after plaster application. In case o f conflict, the most stringent requirements shall apply.

B. Temperature Requirements: Maintain continuous uniform temperature of not less than 50 degF nor more than 80 degF for at least 7 days before beginning plaster application, during its application, and until plaster is dry but for at least 7 days after application is complete. Distribute heat evenly; prevent concentrated or uneven heat from contacting plaster near heat source.


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C. Ventilation: Ventilate building spaces as required to remove water in excess of that required for hydrating plaster. Begin ventilation immediately after plaster is applied and continue until it has set.

D. Protect contiguous work from soiling, spattering, moisture deterioration, and other harmful effects caused by plastering.

PART 2 - PRODUCTS

2.1 ACCESSORIES:

A. General: Comply with material provisions of ASTM C 841 and requirements indicated below; coordinate depth of accessories with thicknesses and number of plaster coats required.

2.2 PLASTER MATERIALS:

A. Base-Coat Plasters: ASTM C 28, types as indicated below:

1. Gypsum neat plaster.

2. Gypsum wood-perlite plaster.

B. Finish-Coat Plasters: Types as indicated below:

1. Gypsum gauging plaster, ASTM C 28.

2. Gypsum ready-mixed finish plaster, manufacturer’s standard mill-mixedgauged interior finish.

C. Aggregates for Finish-Coat Plaster: Clean washed sand complying with ASTM C 35; graded per ASTM C 842.

2.3 MISCELLANEOUS MATERIALS:

A. Water for Mixing and Finishing Plaster: Potable and free of substances capable of affecting plaster set or of damaging plaster, lath, or accessories.

B. Bonding Compound: Polyvinyl-acetate, complying with ASTM C 631.

C. Masking Tape: Nonstaining, nonabsorbent material; compatible with substratesurfaces; and that will easily come off entirely, including adhesive.


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DESIGN + CONSTRUCTION

2.4 PLASTER MIXES AND COMPOSITIONS:

A. Plaster Base-Coat Compositions: Comply with ASTM C 842 and manufacturer’s written instructions for plaster base-coat proportions that correspond to application methods and plaster bases indicated below:

1. Three-Coat Work: Base coats as indicated below:

a. Scratch Coat: Gypsum neat plaster with job-mixed sand.

b. Brown Coat: Gypsum neat plaster with job-mixed sand.

B. Finish Coats: Proportion materials for finish coats to comply with ASTM C 842 for each type of finish coat and texture indicated.

C. Finish Coats: Proportion materials in parts by dry weight for finish coats to comply with the following requirements for each type of finish coat and texture indicated:

1. Troweled Finishes: Finish-coat proportion as indicated below:

A. Mechanically mix cementitious and aggregate materials for plasters to comply with applicable referenced application standard and with recommendations of plaster manufacturer.

PART 3 - EXECUTION

3.1 INSTALLATION OF PLASTERING ACCESSORIES:

A. General: Comply with referenced lathing and furring installation standards forprovision and location of plaster accessories of type indicated. Miter or cope accessories at comers; install with tight joints and in alignment. Attach accessories securely to plaster bases to hold accessories in place and in alignment during plastering.

3.2 PLASTER APPLICATION, GENERAL:

A. Prepare monolithic surfaces for bonded base coats and use bonding compound to comply with requirements of referenced plaster application standards for conditioning monolithic surfaces.

B. Tolerances: Do not deviate more than plus or minus 1/8 inch in 10 feet from a true plane in finished plaster surfaces, as measured by a 10-foot straightedge placed at any location on surface.

a. Gypsum Gauging Plaster: 1 part plaster to 2 parts aggregate.

2.5 MIXING:


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C. Sequence plaster application with installation and protection of other work so that neither will be damaged by installation of other.

D. Apply thicknesses and number of coats of plaster as indicated or as required by referenced standards.

3.3 PLASTER APPLICATION:

A. Plaster Application Standard: Apply plaster materials, composition, mixes, and finishes indicated to comply with ASTM C 842.

B. Number of Coats: Apply plaster of composition indicated, to comply with the following requirements:

1. Three Coats: Over the following plaster bases:

C. Finish Coats: Apply finish coat and trowel to smooth surface.

3.4 CUTTING AND PATCHING:

A. Prior to cutting locations in public places, clearly mark area intended to be cut with masking tape, taking care not to damage adjacent finishes. Do not proceed to cut material until obtaining approval of Commissioner.

B. Cut, patch, replace, and repair plaster as necessary to accommodate other work and to restore cracks, dents, and imperfections. Repair or replace work to eliminate blisters, buckles, excessive crazing and check cracking, dry outs, efflorescence, sweat outs, and similar defects and where bond to substrate has failed.

C. Leave plaster ready for painting.

3.5 CLEANING AND PROTECTING:

A. Remove temporary protection and enclosure of other work. Promptly remove plasterfrom door frames, windows, and other surfaces not to be plastered. Repair floors,walls, and other surfaces stained, marred, or otherwise damaged during plastering. When plastering is completed, remove unused materials, containers, and equipment and clean floors of plaster debris.

B. Provide final protection and maintain conditions, in a manner acceptable to manufacturer and Installer, that ensure plaster work is without damage or deterioration at the time of Substantial Completion.

END OF SECTION 09 21 00

a. 6” expanded wire lath.


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FMS N o .- E l4-0008a Issue D ate-06/16/2016IEW YORK CITY DEPARTMENT O F

DESIGN ♦ CONSTRUCTION

SECTION 09 29 00

GYPSUM BOARD

PART 1 - GENERAL


A. The following documents apply to all required work for the Project: (1) the Contract Drawings, (2) the Specifications, (3) the General Conditions, (4) the Addendum and (5) the Contract [City of New York Standard Construction Contract],

1.2 SUMMARY:

A. This Section includes the following:

1. Interior gypsum board repair at location of removed fixtures.

B. Significance of the Manhattan Supreme Courthouse: The Manhattan SupremeCourthouse at 60 Centre Street is a designated NYC Landmark and a NYC InteriorsLandmark. All exterior and interior work is to comply with the requirements of the New York City Landmarks Preservation Commission. Use all means necessary to avoid damaging historic building elements and materials to remain. All people working on this Project shall afford all historic materials and finishes the same care and protection as is normally given to new materials and finishes on a newly completed building.

1.3 SUBMITTALS:

A. Product Data: For each type of product.

B. Samples for Initial Selection.

C. Samples for Verification: For the following products:

1. Trim Accessories: Full-size Sample in 2-inch-long length for each trimaccessory indicated.


A. Fire-Resistance-Rated Assemblies: For fire-resistance-rated assemblies, providematerials and construction identical to those tested in assembly indicated according to ASTM E 119 by an independent testing agency.

B. Laws, Codes, and Regulations: Perform work of this Section in accordance with allapplicable federal, state, and local laws, codes, and regulations.

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EW YORK CITY DEPARTMENT OF DESIGN + CONSTRUCTION

C. Knowledge of Site Conditions: It is strongly recommended that Bidders visit the site prior to bid and carefully examine Project scope and conditions that may affect proper execution of work o f this Section and determine or verity dimensions and quantities. Contractor’s submission of bid shall be acknowledgment that he is thoroughly familiar with Project scope and site conditions.

D. Source of Materials: Obtain each type of material required for gypsum board from a single source to ensure a match in quality, performance, and appearance.

E. Restoration o f Damage: Restore and/or replace all broken and damaged elements resulting from work of this Section as directed by and to satisfaction o f Commissioner at no additional cost.

F. Mockups: Build mockups of at least one (1) sq. ft. in surface area to demonstrate aesthetic effects and to set quality standards for materials and execution.

1. Build mockups for the following:

a. One (1 ) repair location as indicated on Drawings.

G. Apply or install final painting on exposed surfaces for review of mockups.

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


A. Store materials inside under cover and keep them dry and protected against weather,condensation, direct sunlight, construction traffic, and other potential causes of damage. Stack panels flat and supported on risers on a flat platform to prevent sagging.


A. Environmental Limitations: Comply with ASTM C 840 requirements or gypsum board manufacturer's written instructions, whichever are more stringent.

B. Do not install paper-faced gypsum panels until installation areas are enclosed and conditioned.

C. Do not install panels that are wet, moisture damaged, and mold damaged.

1. Indications that panels are wet or moisture damaged include, but are not limited to, discoloration, sagging, or irregular shape.

2. Indications that panels are mold damaged include, but are not limited to, fuzzy or splotchy surface contamination and discoloration.

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PART 2 - PRODUCTS

2.1 GYPSUM BOARD, GENERAL:

A. Size: Provide maximum lengths and widths available that will minimize joints in each area and that correspond with support system indicated.

2.2 INTERIOR GYPSUM BOARD:

A. General: Complying with ASTM C 36/C 36M or ASTM C 1396/C 1396M, as applicable to type of gypsum board indicated and whichever is more stringent.

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. American Gypsum Co.

b. BPB America Inc.

c. G-P Gypsum.

d. Lafarge North America Inc.

e. National Gypsum Company.

f. PABCO Gypsum.

g. Temple.

h. USG Corporation.

i. Or approved equal.

B. Regular Type:

1. Thickness: 1/2 inch.

2. Long Edges: Tapered.

C. Type X:




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FMS N o.- E l 4-0008 Issue Date - 06/16/2016

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B.

C.

rIEW YORK CITY DEPARTMENT OF DESIGN ♦ CONSTRUCTION

Ceiling Type: Manufactured to have more sag resistance than regular-type gypsum board.



[ ACCESSORIES:

Interior Trim: ASTM C 1047.

1. Material: Galvanized or aluminum-coated steel sheet, rolled zinc, plastic, or paper-faced galvanized-steel sheet

2. Shapes:

a. Cornerbead.

b. LC-Bead: J-shaped; exposed long flange receives joint compound.

c. U-Bead: J-shaped; exposed short flange does not receive joint

T TREATMENT MATERIALS:

General: Comply with ASTM C 475/C 475M.

Joint Tape:

1. Interior Gypsum Board: Paper.

Joint Compound for Interior Gypsum Board: For each coat, use formulation that is compatible with other compounds applied on previous or for successive coats.

1. Prefilling: At open joints and damaged surface areas, use setting-type taping compound.

2. Embedding and First Coat: For embedding tape and first coat on joints, fasteners, and trim flanges, use all-purpose compound.

a. Use setting-type compound for installing paper-faced metal trim

3. Fill Coat: For second coat, use drying-type, all-purpose compound.

4. Finish Coat: For third coat, use setting-type, sandable topping compound.

compound.

accessories.


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2.5 AUXILIARY MATERIALS:

A. General: Provide auxiliary materials that comply with referenced installation standards and manufacturer's written instructions.

B. Laminating Adhesive: Adhesive or joint compound recommended for directly adhering gypsum panels to continuous substrate.

1. Laminating adhesive shall have a VOC content of 50g/L or less.

C. Steel Drill Screws: ASTM C 1002 unless otherwise indicated.

1. Use screws complying with ASTM C 954 for fastening panels to steelmembers from 0.033 to 0.112 inch thick.

D. Masking Tape: Nonstaining, nonabsorbent material; compatible with substrate surfaces; and that will easily come off entirely, including adhesive.

PART 3 - EXECUTION

3.1 CUTTING AND PATCHING:

A. Prior to cutting locations in public places, clearly mark area intended to be cut withmasking tape, taking care not to damage adjacent finishes. Do not proceed to cutmaterial until obtaining approval of Commissioner.

B. Cut, patch, replace, and repair gypsum board as necessary to accommodate other work and to restore cracks, dents, and imperfections.

C. Leave gypsum board ready for painting.

3.2 EXAMINATION:

A. Examine areas and substrates including welded hollow-metal frames and support framing, with Installer present, for compliance with requirements and other conditions affecting performance of the Work.

B. Examine panels before installation. Reject panels that are wet, moisture damaged, and mold damaged.

C. Proceed with installation only after unsatisfactory conditions have been corrected.

3.3 APPLYING AND FINISHING PANELS, GENERAL:

A. Comply with ASTM C 840.


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B. Install panels with face side out. Butt panels together for a light contact at edges and ends with not more than 1/16 inch of open space between panels. Do not force into place.

C. Locate edge and end joints over supports, where intermediate supports or gypsum board back-blocking is provided behind end joints. Do not place tapered edges against cut edges or ends. Stagger vertical joints on opposite sides of partitions. Do not make joints other than control joints at corners of framed openings.

D. Form control and expansion joints with space between edges of adjoining gypsum panels.

E. Cover both faces of support framing with gypsum panels in concealed spaces except in chases braced internally.

1. Fit gypsum panels around ducts, pipes, and conduits.

2. Where partitions intersect structural members projecting below underside of floor/roof slabs and decks, cut gypsum panels to fit profile formed by structural members; allow 1/4- to 3/8-inch-wide joints to install sealant.

F. Isolate perimeter of gypsum board applied to non-load-bearing partitions at structural abutments. Provide 1/4- to 1/2-inch-wide spaces at these locations and trim edges with edge trim where edges of panels are exposed. Seal joints between edges and abutting structural surfaces with acoustical sealant.

G. Attachment to Steel Framing: Attach panels so leading edge or end of each panel is attached to open (unsupported) edges of stud flanges first.

3.4 APPLYING INTERIOR GYPSUM BOARD:

A. Install interior gypsum board in the following locations:

1. Regular Type: To match existing.

2. TypeX: To match existing.

3. Ceiling Type: To match existing.

B. Multilayer Application:

1. On partitions/walls, apply gypsum board indicated for base layers and face layers vertically (parallel to framing) with joints of base layers located over stud or furring member and face-layer joints offset at least one stud or furring member with base-layer joints unless otherwise indicated or required by fire- resistance-rated assembly. Stagger joints on opposite sides of partitions.


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2. Fastening Methods: Fasten base layers and face layers separately to supportswith screws.

3.5 INSTALLING TRIM ACCESSORIES :

A. General: For trim with back flanges intended for fasteners, attach to framing with same fasteners used for panels. Otherwise, attach trim according to manufacturer's written instructions.

B. Control Joints: Install control joints according to ASTM C 840 and in specific locations approved by Commissioner for visual effect.

C. Interior Trim: Install in the following locations:

1. Cornerbead: Use at outside corners.

2. LC-Bead: Use at exposed panel edges.

3. U-Bead: Use at exposed panel edges.

3.6 FINISHING GYPSUM BOARD:

A. General: Treat gypsum board joints, interior angles, edge trim, control joints, penetrations, fastener heads, surface defects, and elsewhere as required to prepare gypsum board surfaces for decoration. Promptly remove residual joint compound from adjacent surfaces.

B. Prefill open joints and damaged surface areas.

C. Apply joint tape over gypsum board joints, except for trim products specificallyindicated as not intended to receive tape.

D. Gypsum Board Finish Levels: Finish panels to levels indicated below and according to ASTM C 840:

1. Level 1 : Ceiling plenum areas, concealed areas, and where indicated.

2. Level 4: At panel surfaces that will be exposed to view, unless otherwiseindicated.

a. Primer and its application to surfaces are specified in Section 09 90 00 - Painting.

b. Paint and its application to surfaces are specified in Section 09 90 00 - Painting.


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FMS N o . - E l 4-0008 Issue Date - 06/16/2016

3.7 PROTECTION:

A. Protect adjacent surfaces from drywall compound and promptly remove from floors and other non-drywall surfaces. Repair surfaces stained, marred, or otherwise damaged during drywall application.

B. Protect installed products from damage from weather, condensation, direct sunlight, construction, and other causes during remainder of the construction period.

C. Remove and replace panels that are wet, moisture damaged, and mold damaged.

1. Indications that panels are wet or moisture damaged include, but are notlimited to, discoloration, sagging, or irregular shape.

2. Indications that panels are mold damaged include, but are not limited to, fuzzy or splotchy surface contamination and discoloration.



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DESIGN ♦ CONSTRUCTION

SECTION 09 90 00

PAINTING

PART 1 - GENERAL


A. The following documents apply to all required work for the Project: (1) the Contract Drawings, (2) the Specifications, (3) the General Conditions, (4) the Addendum and (5) the Contract [City of New York Standard Construction Contract],

1.2 SUMMARY:

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

1. Preparing and finishing interior wood elements that have been repaired or replaced. Ensure new wood finishes match existing exactly including, but not limited to finish reflectance and surface appearance. Wood work includes, but is not limited to:

a. Surface cleaning existing finished wood surfaces to remove general dirt and soiling.

b. Making new wood surfaces flush with existing and filling new wood surfaces as required.

c. Preparing new wood surfaces between finish coats according to manufacturer’s instruction.

d. Sealing new wood surfaces.

e. Staining new wood surfaces to even color across surfaces and build color as needed to provide wood finish matching existing.

f. Applying varnish to new wood surfaces.

2. Preparing, priming, and painting interior plaster and gypsum board surfaces that have been repaired.

3. Completing all other work and supplying all other materials as indicated on the drawings or as may be reasonably inferred and needed to make the work of this section complete.

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B. Significance of the Manhattan Supreme Courthouse: The Manhattan Supreme Courthouse at 60 Centre Street is a designated NYC Landmark and a NYC Interiors Landmark. All exterior and interior work is to comply with the requirements of the New York City Landmarks Preservation Commission. Use all means necessary to avoid damaging historic building elements and materials to remain. All people working on this Project shall afford all historic materials and finishes the same care and protection as is normally given to new materials and finishes on a newly completed building.

1.3 DEFINITIONS:

A. “Wood Finish Conservator”: Professionally trained in conservation of wood coatings and finishes and regularly employed in the field of paint and coatings conservation as defined in the Code of Ethics and Guidelines for Practice of the American Institute for Conservation of Historic and Artistic Works (AIC). Conservator shall be a member in good standing of AIC.


A. Wood Finish Restoration Specialist: Contractor for work of this Section shall meet the following requirements. The City of New York’s decision as to whether the Contractor proposed for work of this Section meets the requirements of this Section shall be final.

1. Foreman: Wood finish restoration shall be directly supervised by a full-time foreman who is a wood finish conservator. Foreman shall be on site daily for duration of work of this Section. Same foreman shall remain on job throughout work unless his performance is deemed unacceptable.

2. The contractor or subcontractor performing the work specified above must, within the last five (5) consecutive years prior to the bid opening, have successfully completed in a timely fashion at least three (3) projects similar in scope, size and type to the required work, based on architectural style, construction method and materials and age of building for this particular project. One such prior project of the three must have involved a landmarked building, as officially designated by the City, State or federal government.

B. Standards: Materials and procedures shall comply with the following guidelines and standards and with requirements of this Section. In case of conflict, the more stringent requirement shall govern.

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

2. Applicable standards and recommendations of the Painting and Decorating Contractors of America (PDCA).


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E.

F.

G.

H.

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3. Availability: Provide copies of the following standards at the facility andProject site where work of this Section is performed and make standards available for reference.

ASTM International (ASTM):

1. ASTM D3359, Standard Test Methods for Measuring Adhesion by Tape Test.

2. ASTM E 96, Standard Test Methods for Water Vapor Transmission of

3. ASTM E 514, Standard Test Method for Water Penetration and LeakageThrough Masonry.

4. ASTM G 154, Standard Practice for Operating Fluorescent Light Apparatus forUV Exposure of Nonmetallic Materials.

5. ASTM E84-05, Standard Test Method for Surface Burning Characteristics ofBuilding Materials.

Laws, Codes, and Regulations: Perform all work of this Section in compliance with all applicable federal, state, and local laws, codes, and regulations.

Knowledge of Site Conditions: It is strongly recommended that Bidders visit the site prior to bid and carefully examine Project scope and conditions that may affect proper execution of work of this Section and determine or verify dimensions and quantities. Contractor’s submission of bid shall be acknowledgment that he is thoroughly familiar with Project scope and site conditions.

Cleaning of Existing Finished Wood: All cleaning of existing finished wood surfaces shall be performed by the wood finish conservator or performed under the direct supervision of the wood finish conservator.

Source of Materials: Obtain each type of material required for painting from a single source to ensure a match in quality, performance, and appearance.

Limitations on Use of Abrasive: Limit use of abrasives to avoid damaging finishes and substrates. Use special care to avoid uneven removal of finish at corners and arrises and to avoid dishing plane surfaces.

1. Sanding of New Wood Finish Coats: Hand sanding only. No electric or pneumatic sanders will be permitted.

Restoration of Damage: Restore and/or replace all broken and damaged elements resulting from work of this Section as directed by and to satisfaction of Commissioner at no additional cost.

Materials.


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1.5 SUBMITTALS:

A. General: Submit each item in this Article in compliance with the Conditions of the Contract and Division 1 specification sections. Revise and resubmit each item as required to obtain Commissioner’s approval.

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

C. Product Literature: Manufacturer’s published technical data for each product to be used in work of this Section including recommendations for application and use, test reports and certificates verifying that product complies with specified requirements, and Material Safety Data Sheets (MSDS).

1. Material List: An inclusive list of required coating materials. Indicate eachmaterial and cross-reference specific coating, finish system, and application.Identify each material by manufacturer’s catalog number and generalclassification.

2. Manufacturer’s Information: Manufacturer’s technical information, includinglabel analysis and instructions for handling, storing, and applying each coating material.

D. Finish Samples: For each color and coating system to be applied, with texture tosimulate actual conditions, on representative samples of substrate matching substrateon which coating is to be applied. Please provide the following:

1. Provide stepped samples, defining each separate coat, including primers. Use representative colors when preparing samples for review. Resubmit until required sheen, color, and texture are achieved.

2. Provide a list o f materials and applications for each coat o f each sample. Label each sample for location and application.

3. Submit 3-1/2-inch x 12-inch samples on wood similar to that to be painted.

4. Submit 12 x 12-inch samples on plaster similar to that to be painted.

E. Quality Control Submittals:

1. Provide protection plan o f surrounding areas and non-cementitious surfaces.

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F. Testing: Conduct testing as specified in Article “Testing,” below to determine most appropriate products and materials to be used for repairing and refinishing wood.

G. Provide mockups as specified in Article “Mockups,” below.

1.6 MOCKUPS:

A. General: Before beginning general painting work, prepare mockups to providestandards for work of this Section. Do not proceed with painting work untilCommissioner has approved mockups.

1. Locate mockups as directed by Commissioner.

2. Notify Commissioner 48 hours prior to start of each mockup.

3. Use crew that will execute the work and follow requirements of this Section to demonstrate full range of aesthetic effects and workmanship.

4. Repeat mockups as necessary to obtain Commissioner’s approval.

5. Protect approved mockups to ensure that they are without damage,deterioration, or alteration at time of Substantial Completion.

6. Approved mockups in undamaged condition at time of Substantial Completion may be incorporated into the Work.

7. Approved mockups will represent minimum acceptable standards for painting. Subsequent painting work that does not meet standards of approved mockups will be rejected.

B. Prepare the Following Field Samples:

1. Cleaning Wood with Transparent Finish: One area, one (1) sq. ft., for each type of transparent finish to be cleaned.

2. Providing Transparent Finish on Wood: One area, one (1) sq. ft., for each combination of wood species, surface treatment (staining and color of stain, filling), and type of wood finish.

3. Preparing and Painting Interior Plaster Work: Minimum one (1) square foot.

C. Preconstruction F ield-Adhesion Testing :

1. Perform adhesion test per ASTM D3359, Measuring Adhesion by Tape, Method A. Minimum adhesion rating of 4A is required on 0 to 5 scale.


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2. Perform adhesion test at each type of substrate at location directed by Commissioner.


A. Deliver materials to Project site in manufacturer’s original, unopened packages and containers bearing manufacturer’s name and label and the following information: product name or title of material; product description (generic classification or binder type); manufacturer’s stock number and date of manufacture; contents by volume, for pigment and vehicle constituents; thinning instructions; application instructions; color name and number; and VOC content.

B. Store materials not in use in tightly covered containers in a well-ventilated area at a minimum ambient temperature of 45 deg F. Maintain storage containers in a clean condition, free of foreign materials and residue.

1. Protect from freezing. Keep storage area neat and orderly. Remove oily ragsand waste daily.


A. Safety: Use all necessary means to protect all persons, whether engaged in work of this Section or not, from harm resulting from work of this Section.

B. Protection of Building Elements and Materials: Use all necessary means to protectbuilding elements and materials not being painted from damage, deterioration, orstaining caused by work of this Section.

C. Coordination: Coordinate work of this Section with other work to ensure proper completion of all work.

1. Schedule painting so that uncured paint will not be harmed or marred byairborne dust or debris from other construction work.

D. Contract Drawings: Drawings are two-dimensional representations of three-dimensional objects and do not show all surfaces. Perform work on all surfaces of projections, reveals, ornament, and other elements associated with areas on which work is indicated.

1.9 ENVIRONMENTAL CONDITIONS:

A. Follow specified requirements and manufacturer’s recommendations concerningtemperature requirements for products specified herein. In case of conflict, the more stringent requirements shall govern.

B. Apply waterborne paints only when temperatures of surfaces to be painted and surrounding air are between 50 deg F and 90 deg F.


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C. Apply solvent-thinned paints only when temperatures of surfaces to be painted and surrounding air are between 45 deg F and 95 deg F.

D. Do not apply paint in snow, rain, fog, or mist; or when relative humidity exceeds 85 percent; or at temperatures less than 5 deg F above dew point; or to damp or wet surfaces.

E. Do not apply silicate stain until surfaces are cleaned, substrate repairs are complete and cured, and wet work is completed and nominally dry. Substrate and ambient air temperature must be between 41 °F (5 °C) and 86 °F (30 °C). Maintain temperature during and after application.

F. Do not apply silicate stain over damp substrate, when rain is expected, in high winds, or on sun heated substrate during application.

1.10 LEAD-CONTAINING PAINT (LCP):

A. General: Perform all work that disturbs lead-containing paint (LCP), handle all material that involves lead-containing paint, and transport and dispose of all lead- containing paint and residue in compliance with all applicable federal, state, and local laws and regulations for identification, removal, labeling, handling, containerization, transportation, and disposal of lead-containing material including, but not limited to, those referenced herein.

B. U.S. Department of Labor OSHA Regulations: Including but not limited to: Title 29, Code of Federal Regulations (CFR) Section 1926.62: “Lead Exposure in Construction” and Title 29, CFR Section 1910.1200: “Hazard Communication Standard.”

C. U.S. Environmental Protection Agency (USEPA) Regulations: Including but not limited to: Title 40 CFR Part 262: “Standards Applicable to Generators of Hazardous Waste” and Part 263: “Standards Applicable to Transporters of Hazardous Waste.”

D. U.S. Department of Transportation (USDOT) Regulations: Including but not limited to: 49 CFR Parts 172, 173, 174, 175, 177, 178, 179, and 180.

E. NYS Department of Environmental Conservation (NYSDEC) Regulations: Including but not limited to: Title 6, Part 364 and Parts 370-374.

1.11 EXTRA MATERIALS:

A. Furnish extra paint materials from same production run as materials applied and inquantities described below. Package with protective covering for storage and identify with labels describing contents. Deliver extra materials to City of New York.

1. Quantity: Furnish City of New York with an additional five percent, but not less than 1 quart or 1 case, as appropriate, of each material and color applied.


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PART 2 - PRODUCTS

2.1 CLEANING MATERIALS:

A. Trisodium Phosphate (TSP): solution of TSP and water, per manufacturer’s instructions, available from:

1. The Savogran Company, PO Box 130, Norwood, MA 02062 (800) 225-9872.

2. Empire Blended Products, Inc. 250 Hickory Lane, Bayville, NJ 08721 (732)269-4949.

3. DAP Products Inc., 2400 Boston Street, Suite 200, Baltimore, MD 21224 (800) 543-3840.

4. Or approved equal.

B. Alcohol: Denatured alcohol.

C. Water: Tap water.

D. Miscellaneous Materials:

1. Rubber gloves.

2. Sponges.

3. Microfiber towels.

2.2 PAINT SYSTEMS:

A. Paint: for application over Plaster Substrates:

1. Interior Primer: Subject to compliance with requirements, provide one of thefollowing:

a. Benjamin Moore Fresh Start All Purpose 100% Acrylic Primer 023, by Benjamin Moore & Co., Montvale, NJ.

b. PrepRite ProBlock Interior/Exterior Latex Primer/Sealer, Sherwin Williams, The Sherwin-Williams Company, Cleveland, OH.

c. Pure Performance Interior Latex Primer, by Pittsburgh Paints, PPG, Pittsburgh, PA.

d. Or approved equal.


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" J I E W YORK CITY DEPARTMENT OF DESIGN ♦ CONSTRUCTION

2. Interior Semigloss Latex Finish: Subject to compliance with requirements, provide one of the following:

a. AURA Semi-Gloss Waterborne Interior Paint 528, by Benjamin Moore & Co., Montvale, NJ.

b. Duration Home Interior Latex, Sherwin Williams, by The Sherwin- Williams Company, Cleveland, OH.

c. Pure Performance Interior Latex Paint, by Pittsburgh Paints, PPG,Pittsburgh, PA.

d. Or approved equal.

2.3 WOOD FINISHING PRODUCTS :

A. Wood Grain Filler: Wood filler specifically designed to fill pores in open-grained wood. Tint filler to match wood to be filled (finish to be provided). Provide one of the following or approved equal:

1. Mohawk Grain Filler (lacquer or varnish only), by Mohawk Finishing Products, Hickory, NC.

2. Water Base Paste Wood Filler, by Mohawk Finishing Products, Hickory, NC 28603.

3. Benwood Wood Grain Filler 238, by Benjamin Moore & Co., Montvale, NJ.


B. Wood Sealer: Subject to compliance with requirements, provide one of the following:

1. Sher-Wood F3 Kemvar Sealer, Sherwin Williams, by The Sherwin-Williams Company, Cleveland, OH.

2. Benwood Quick Dry Sanding Sealer 413, by Benjamin Moore & Co., Montvale, NJ.

3. GF Sanding Sealer, by General Finishes, East Troy, WI.


C. Wood Stain: Subject to compliance with requirements, provide one of the following:

1. Minwax, Wood Finish, by Minwax, Upper Saddle River, NJ.

2. Graintone Plus, by Valspar, Minneapolis, MI.




3. Wood Classics 250 Interior Oil Stain, by Sherwin Williams, by The Sherwin- Williams Company, Cleveland, OH.


D. Wood Varnish: Subject to compliance with requirements, provide one of the following:

1. Sher-Wood F3 Kemvar Varnish, Sherwin Williams, The Sherwin-Williams Company, Cleveland, OH.

2. Benwood Fast Dry Clear Varnish 419, by Benjamin Moore & Co., Montvale, NJ.

3. GF High Performance Polyurethane Top Coat, by General Finishes, East Troy, W I .


2.4 PAINT MATERIALS, GENERAL:

A. Material Compatibility: Provide primers and fmish-coat materials that are compatible with one another and with substrates indicated under conditions of service and application, as demonstrated by manufacturer based on testing and field experience.

B. Material Quality: Provide manufacturer’s best-quality, highest-grade paint material of various coating types specified that are factory formulated and recommended by manufacturer for application indicated. Paint material containers not displaying manufacturer’s product identification will not be acceptable.

C. Pigments: Pure non-fading and of applicable types to suit substrates and service indicated.

D. Colors: Colors will be provided by City of New York. Colors will be intense, saturated colors matching original colors. Colors will not be selected from manufacturer’s standard colors. Mix custom colors to exactly match color standards provided.

E. Thinners: Use only thinners approved by paint manufacturer and use only within recommended limits and when approved in advance by Commissioner.

2.5 PREPARATION MATERIALS AND EQUIPMENT:

A. Sandpaper: Aluminum oxide, silicon carbide, and other appropriate abrasives. Limitabrasives for sanding existing finishes to 220 grit and finer. Provide commercial abrasive sheets designed for use with wood, provide in grits appropriate for intended use.

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C. Scrapers: Metal scrapers with slightly rounded comers to prevent gouging wood.

2.6 PAINT AND FINISH SYSTEMS:

A. Paint for Plaster Elements: Semigloss Latex Finish. Primer and two finish coats.

1. Primer: Penetrating Alkyd Primer. Provide 2.1-mil minimum dry film thickness.

2. Second and Third Coats: Semigloss Latex Paint. Provide 1.2-mil minimum dry film thickness per coat.

B. Finish for Wood Elements: Finish to match existing. Provide sealer, stain and twovarnish coats. Provide minimum dry film thickness per coat per manufacturer’sinstructions.

PART 3 - EXECUTION

3.1 EXAMINATION:

A. Examine substrates, areas, and conditions for compliance with requirements for paintand wood finish application. Comply with procedures specified in PDCA P4.

1. Verify substrate is secure, sound, dry, and absorbent, and free of dirt, grease, salts, oil based paints, release agents, and other bond breakers.

2. Verify substrate has no pretreatments or priming materials applied.

3. Verify materials to be coated are fully cured to manufacturer recommendations.

4. Proceed with paint and wood finish application only after unsatisfactory conditions have been corrected and surfaces receiving paint are thoroughly dry.

5. Start of painting and wood finishing will be construed as Applicator’s acceptance of surfaces and conditions.


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EW YORK CITY DEPARTMENT OFDESIGN ♦ CONSTRUCTION

1. Provide stearated sandpaper for use after final coat of shellac or varnish.

B. Sanding Equipment

1. Sanding blocks for hand sanding

2. No power equipment is permitted without prior written authorization fromCommissioner.


3.2 PREPARATION:

A. General: Remove and store in bag labeled with location all hardware, hardware accessories, and similar items that are not to be painted or finished. If removal is impractical or impossible because of size or weight of item, provide surface-applied protection before surface preparation and painting.

1. After completing painting and wood finishing operations in each space or area, reinstall items removed using workers skilled in trades involved.

B. Surface Preparation, General: Clean and prepare surfaces to be painted or finished to comply with coating manufacturer's written instructions for each particular coating and substrate condition, and to comply with requirements of referenced standards.

C. Cleaning: Before applying paint or other surface treatments, clean substrates of all substances that could impair bond of paint coatings.

1. Schedule cleaning and painting so dust and other contaminants from cleaningprocess will not fall on wet, newly painted surfaces.

D. Existing Wood Surface Preparation: Clean and prepare surfaces to be finished following wood finish manufacturer’s written instructions and requirements specified herein for each particular substrate condition. In case of conflict, the most stringent and restrictive requirement shall govern.

1. Remove all loose and flaking coatings using scrapers. Do not disturb sound coatings. Do not damage wood substrate. If mouldings are damaged, contractor shall replace element at no cost to City of New York.

2. Sand surfaces of remaining coatings lightly and evenly to remove gloss and provide for optimum adhesion of new wood finishes.

3. Sand edges of remaining coatings to provide smooth, feathered transition to exposed underlayers or substrate. Do not damage or deteriorate substrate during sanding of coatings. Do not create scratches in previous coatings or substrate that will be visible following wood finishing.

4. Clean surfaces of dirt, oil, and other foreign substances with scrapers, TSP, and sandpaper, as required to provide optimum conditions for wood finish application. Completely remove sanding dust using vacuum followed by clean tack cloths.

a. Protect surrounding surfaces and personnel during all wood cleaning procedures.

b. Mix TSP with tap water according to manufacturer’s instruction. Use a sponge, carefully clean existing wood surfaces from the bottom of the



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wooden surface upward. Rinse wood surface completely and repeat process if necessary. Repeat until surface dirt and soiling have been removed.

c. Drying: Dry wood surface with a microfiber towel. Allow existing finishes to dry thoroughly following removal of soiling.

d. Scrape and clean small, dry, seasoned knots, and apply a thin coat of white shellac or other recommended knot sealer before applying primer. After priming, fill holes and imperfections in finish surfaces with putty or plastic wood filler. Sand smooth when dried.

e. Prime or seal wood to be finished immediately on delivery. Prime edges, ends, faces, undersides, and back sides of wood.

E. New Wood Surface Preparation: Clean and prepare surfaces to be finished following wood finish manufacturer’s written instructions and requirements specified herein for each particular substrate condition. In case of conflict, the most stringent and restrictive requirement shall govern.

1. Vacuuming: Vacuum surface using soft bristle attachment.

2. Protect surrounding surfaces and personnel during all wood cleaning procedures.

3. Mix TSP with tap water according to manufacturer’s instruction. Use a sponge, carefully clean existing wood surfaces from the bottom of the wooden surface upward. Rinse wood surface completely and repeat process if necessary. Repeat until surface dirt and soiling have been removed.

4. Drying: Dry wood surface with a microfiber towel. Allow existing finishes to dry thoroughly following removal of soiling.

F. Material Preparation: Mix and prepare paint and wood finish materials following manufacturer’s written instructions.

1. Maintain containers used in mixing and applying paint and finishes in a clean condition, free of foreign materials and residue.

2. Paint and finishing materials shall be free from skins, lumps, and foreign matter when used. Do not stir surface film into material. If necessary, remove surface film and strain material before using.

3. Stir material before application to produce a mixture of uniform density. Stir as required during application to ensure that pigment, fillers, and other materials are kept well stirred while material is being applied.


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■JEW YORK CITY DEPARTMENT OF DESIGN + CONSTRUCTION

A4. Use only thinners approved by paint manufacturer and only within

recommended limits.

G. Tinting: Tint each undercoat a lighter shade to simplify identification of each coat when multiple coats of same material are applied. Tint undercoats to match color of finish coat, but provide sufficient differences in shade of undercoats to distinguish each separate coat.

3.3 PAINT APPLICATION:

A. Paint Application: Apply paint by brushes only. Spraying and rolling of paint are not permitted. Follow manufacturer’s written instructions.

1. Paint systems are indicated in Part 2, above. Provide colors to exactly match color selections to City of New York and Commissioner’s satisfaction.

2. Do not paint over dirt, grease, moisture, or conditions detrimental to formation of a durable paint film.

3. Provide finish coats that are compatible with primers and/or sealers used.

B. Scheduling Painting: Apply first coat to surfaces that have been cleaned, pretreated, or otherwise prepared for painting as soon as practicable after preparation and before subsequent surface deterioration.

1. Do not apply coating to deteriorated surfaces. Reprepare surfaces before paint is applied to comply with surface preparation requirements.

2. Do not apply succeeding coats until previous coat has cured as recommended by manufacturer. Sand between applications if sanding between coats is recommended by manufacturer’s written instructions and/or if it is required to produce a smooth, even surface.

3. Allow sufficient time between successive coats to permit proper drying. Do not recoat surfaces until paint is thoroughly dry and hard and does not deform or feel sticky under moderate thumb pressure and until application of another coat of paint does not cause undercoat to lift or lose adhesion.

C. Additional Coats: If undercoats, stains, or other conditions show through final coat of paint, apply additional coats until paint film is of uniform finish, color, and appearance. Give special attention to ensure that edges, corners, crevices, welds, and exposed fasteners receive a dry film thickness equivalent to that of flat surfaces.

D. Application Procedures: Brush apply all coatings using type of brush best suited for type of material being applied. No method except brush application is acceptable.

1. Brushes: Use brush of appropriate size for surface or item being painted.


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E. Minimum Coating Thickness: Apply paint materials no thinner than manufacturer’s recommended spreading rate to achieve dry film thickness indicated. Provide total dry film thickness of entire system as recommended by manufacturer.

F. Workmanship: Perform painting in a workmanlike manner using skilled mechanics. Spread materials evenly, smoothly flowed on, and free from defects. Finish surfaces shall be uniform.

G. Prime Coats: Apply a prime coat to all material indicated to be painted. Recoat primed and sealed surfaces where evidence of suction spots or unsealed areas in first coat appears, to ensure a finish coat with no bum-through or other defects due to insufficient sealing.

1. Backprime all new wood elements and all existing wood elements to be removed and reinstalled.

2. Prime all cut ends of new and existing wood elements.

3. The use of tinted primers is recommended to allow adequate coverage of finish paints.

FI. Pigmented (Opaque) Finishes: Completely cover surfaces as necessary to provide a smooth, opaque surface of uniform finish, color, appearance, and coverage. No surfaces with cloudiness, spotting, holidays, laps, brush marks, runs, sags, ropiness, or other surface imperfections will be accepted.

I. Completed Work: Match approved mockups for color, texture, and coverage. Remove finish and repaint work not complying with requirements.

3.4 FINISHING NEWLY INSTALLED WOOD TO MATCH EXISTING SURFACES:

A. General: Treat newly installed wood components as specified herein to provide finish matching approved mockups. Remove treatment and reapply until finish matches that of approved mockup to Commissioner’s satisfaction.

B. Make surface of new wood flush with existing surround. Apply wood grain filler, per manufacturer’s instructions, as required to achieve a flush surface. Tint filler to match wood to be filled. Remove any resulting dust or debris and prepare wood surface for finishing.

C. Apply one coat of wood sealer as specified. Follow manufacturer’s application instructions.

D. Staining: Apply specified stain to produce a consistent color field across the wood surfaces, wiping excess as necessary and building color as needed. Provide even finish matching color of finish on approved mockups. Allow finish to dry overnight.


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' T I E W YORK CITY DEPARTMENT O F DESIGN ♦ CONSTRUCTION

E. Varnish: Apply two coats of specified varnish evenly across wood surfaces matching appearance of approved mockups and the existing surround. Allow finish to dry overnight.

F. Sanding: Refer to manufacturer’s instructions for surface preparation between finish coats.

3.5 CLEANING:

A. Cleanup: At the end of each workday, remove empty cans, rags, rubbish, and other discarded paint materials from Project site.

1. After completing painting, clean glass and paint-spattered surfaces. Remove spattered paint by washing and scraping without scratching or damaging adjacent finished surfaces.

3.6 ADJUSTMENT AND PROTECTION:

A. After work of other trades is complete, touch up and restore damaged or defaced painted surfaces. Comply with procedures specified in PDCA PI.

B. Protect building fabric, whether being painted or not, against damage from painting. Correct damage by cleaning, repairing or replacing, and repainting, as approved by Commissioner at no additional cost.

C. Provide “Wet Paint” signs, barriers, and other measures required to protect newly painted finishes.



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Documents

NEW YORK CITY DEPARTMENT OF DESIGN ♦ … skim coat at areas of repair. 2. Three coat gypsum plastering at areas of repair. B. Significance of the Manhattan Supreme Courthouse: The