Architect s Supplemental Instructions

Transcription

1 Architect s Supplemental Instructions Number: ASI 015 Date Issued: February 10, 2015 KPFF Project Number: Project: UW Montlake Triangle To Contractor, The Work shall be carried out in accordance with the following supplemental instructions issued in accordance with the Contract Documents. Proceeding with the Work in accordance with these instructions indicates your acknowledgement that there will be no change in the Contract Sum or Contract Time unless Owner is notified and agrees otherwise. Attachment Descriptions: Specification Section Painting and Coating: Addition of concrete skim coat product and paint colors PNT-2, and PNT-3. LSK-037 Revision to landbridge and adjacent site wall finish system and locations of finish. L110 Revision to landbridge and site wall finishes and locations of finish, including landbridge soffit. Issued By: Puja Shaw, Associate (Signature) (Printed name and title)

2 Page 1 of 8 PART 1 - GENERAL 1.1 SUMMARY A. Section Includes: 1. Preparation of surfaces. 2. Preparation and painting of exterior concrete where indicated. B. Related Sections: The work of the following Sections is related to the work of this Section. Other Sections, not referenced below, may also be related to the proper performance of this work. 1. Section , Cast-In-Place Concrete 2. Section , Architectural Concrete 3. Section , Exterior Steel Coatings 1.2 DEFINITIONS A. DFM (dry film mils): Minimum thickness, measured in mils, of a coat of paint in the cured state. B. Gloss Levels: The following terms are used to specify specular gloss of finish coats in accordance with those listed by MPI (Master Painter Institute) when measured in accordance with ASTM D523. Gloss Level 1.3 SUBMITTALS Description 60 degrees Level 1 Traditional matte finish - flat Level 2 High side sheen flat a velvetlike finish Level 3 Traditional eggshell-like finish 85 degrees Maximum 5 units and Maximum. 10 units Maximum 10 units Level 4 Satin-like finish units Level 5 Traditional semigloss and units units and units units Level 6 Traditional gloss units Level 7 High gloss More than 85 units A. Procedures: Section , Submittal Procedures. and Minimum 35 units B. Product Data: Submit complete list of products proposed for use, including technical data on each product to verify compliance; organize list to indicate painting systems to be used with each substrate.

3 Page 2 of 8 1. Submit paint list with paint manufacturer, paint name, coverage and VOC content listed. 2. Submittal shall contain any proposed revisions to Contract Specifications (for example surface preparation, and method of application) which painting contractor feels are necessary in their execution of the Contract. 3. All proposed revisions must be approved by the Engineer prior to proceeding with the Work. 4. The submission of paint product data is to be in conjunction with steel submittals where the steel is being painted. This is to confirm that the shop applied steel primer is compatible with the intermediate coat and final paint coats. This submittal will not be considered complete and acceptable if either product is not compatible with each other. C. Samples: Using approved paint products, prepare and submit samples of each type of finish, gloss level, and color for approval. Refer to Article 2.04, herein, for requirements. Label samples with color number, product name and date. Provide three samples of each color and sheen. 1. Prepare paint samples on 8-1/2 inch by 11-inch heavy, durable non porous paper. 2. Adjustments to the overall sheen in one or more of the colors may be required. Such adjustments (if any) shall be made at no additional cost. Additional samples will be required should adjustments be made. 3. Initial color samples which have been approved are subject to final acceptance at time of field mock-up examination. D. Contract Closeout Submittal: Include the following at time of Project Closeout: 1. Extra Materials: Coordinate submittal of extra maintenance materials with requirements of Section , Closeout Procedures and herein, for quantities and other requirements. 2. Color Mix: Submit color mix formula for each required paint color. Mix formula must be in measured increments of 48ths of an ounce; include the manufacturer's color and number identification, color chip, location list where said colors were applied and paint manufacturer of base. 1.4 QUALITY ASSURANCE A. Single Source: 1. To the maximum extent practicable, select a single manufacturer to provide all materials required by this Section, using additional manufacturers to provide systems not offered by the selected principal manufacturer. 2. For each individual system, provide primer and other undercoat paint produced by same manufacturer as finish coat. Use only thinners approved by paint manufacturer and use only within recommended limits.

4 Page 3 of 8 B. Visual Standards: Each distinct area of the finished Work shall be free of variations in color and sheen, runs, sags, holidays, blistering, checking, cracking, scratches and other signs of poor workmanship. Deep tone and accent color walls shall be free from joint banding, flashing, photographing, and uneven appearance. C. Mockups: Apply benchmark samples of each paint system indicated and each color and finish selected to verify preliminary selections made under sample submittals and to demonstrate aesthetic effects and set quality standards for materials and execution. 1.5 DELIVERY, STORAGE & HANDLING A. Deliver materials to building in sealed, original, labeled containers bearing manufacturer's name, type of material, brand name, color designation, and instructions for mixing and thinning. B. Store materials when not in actual use in a place specifically assigned for that purpose which is dry and out of direct sunlight. Store materials in a manner so as not to exceed the manufacturer's temperature limitations. 1.6 PROJECT CONDITIONS A. Environmental Conditions: Air temperature and substrate temperature and relative humidity shall be within the manufacturer s established limits. Do not apply exterior paint when the following conditions exist, unless requirements of paint manufacturers are more restrictive. 1. Temperature: If surface and ambient temperature is above 90 degrees F, or below 50 degrees F. 2. Weather: Do not apply paint in snow, rain, fog, when excessively windy or during mist; or when relative humidity exceeds 85 percent; or at temperatures less than 5 degrees F above the dew point; or to damp or wet surfaces. B. Lighting: Do not proceed with work under this section unless adequate lighting is available. Provide lighting level of at least 50 candlepower per square foot, measured mid-height at substrate surface. C. Ventilation: Provide adequate ventilation as required for the type of paint and cleaning materials used. If necessary, consult paint manufacturer for recommendations. D. Protection: Protect surrounding areas against damage due to painting operations. At a minimum, surrounding areas shall be covered with polyethylene sheeting and waterproof masking tape. Sound Transit will not be responsible for the Contractor's selection or method of protection. 1. Protective coverings shall be secured against wind and shall be vented to prevent collection of moisture on covered surfaces. 2. Provide "wet paint" signs as required to protect newly painted surfaces. E. Precautions: Take all precautions to prevent fire; open containers of flammable materials only when needed; keep rubbing cloths and oily rags in tightly closed containers and remove from site daily. Dispose of hazardous materials in accordance with all local, State and Federal regulations.

5 Page 4 of 8 F. Coordination: Review other sections of herein in which prime paints are to be provided to ensure compatibility of total coating system for various substrates. Notify Engineer in writing of any anticipated problems using specified coating systems with substrates primed by others. 1.7 EXTRA MATERIALS A. Supply five gallons of each paint type and color; store where directed. B. Label each container with color and color mix number in addition to the manufacturer's label. PART 2 - PRODUCTS 2.1 PAINT MATERIALS - GENERAL A. Manufacturers: Refer to Paint Schedules at end of this Section for manufacturer s product names and paint systems which are included to establish the required level of quality. Additionally the following list of manufacture s are acceptable, contingent upon meeting level of paint quality indicated in the Paint Schedules, and for which a substitution request is not required. 1. ICI Dulux Paints / Devoe Performance Coatings 2. Benjamin-Moore 3. Kelly-Moore Paints. 4. Sherwin Williams: 5. Tnemec Company. 6. Rodda Paint B. Paint Grade: Professional grade coatings meeting the equivalent performance requirements listed in the Master Painter Institute Approved Product List and suitable for its intended use. C. Colors: Each paint color must be accurately mixed to ensure color continuity. No allowance will be granted for mismatched paint of the same color when viewed under normal lighting conditions. D. Provide primer and finish coats, which are compatible with each other and with prime coats provided under other Sections. Provide barrier coats over incompatible primers or remove and re-prime as required. E. Thinner: Type as recommended by the paint manufacturer. Use thinner only when recommended by the paint manufacturer, and then only in a quantity as indicated on the label. F. Primers: Primers, except metal primers, shall be white in color for inspection purposes. 2.2 PRIMERS AND UNDERCOATS A. Concrete and Concrete Masonry (CMU) Primer: ICI Devoe Bloxfil 4000 HD Acrylic, Tnemec Envirofill Series 130 or approved equal latex masonry filler.

6 Page 5 of 8 1. Gloss: Matte, MPI Level VOC limit: 100 g/l. 3. Nominal 8 mils DFM. a. Coverage - CMU: 75 s.f. per gallon. b. Coverage - Concrete: 100 s.f. per gallon. B. Anti-Corrosive Metal Primer (Includes Ferrous and Non-Ferrous Metals): ICI Devoe Devflex 4020 PF DTM, Tnemec Uni-Bond DF Series 115, or approved equal acrylic, rust-inhibitive primer recommended by manufacturer for use on both ferrous and nonferrous metals. 1. VOC limit: 91 g/l. 2. DFM: mils. 3. Adhesion: Minimum rating of 5 when tested in accordance with ASTM D 3359, Method B on all of the following surfaces: a. Steel prepared in accordance with SSPC SP-10. b. Aluminum prepared in accordance with SSPC SP-1. c. Galvanized steel prepared in accordance with SSPC SP-1. C. Waterborne Acrylic Stain: One of the following or approved: 1. Chemprobe/Tnemec Series 617 "Conformal Stain WB". 2. United Coatings "Canyon Tone Stain". 3. Tamms "Aqua Stain". D. Bridge Fascia Walls Concrete Skim Coat: 1. Ardex Tilt Patch. 2.3 PAINT COLORS A. Match the following concrete paint from SP1: B. PNT-2 C. PNT-3 1. PNT-1: Concrete Gray a. WSDOT "Washington Gray" 1. Canyontone Satin, product # a. Color: #0549 Emu. 1. Rodda Multi Master DTM Semi Gloss a. Color: #0549 Emu.

7 Page 6 of 8 PART 3 - EXECUTION 3.1 EXAMINATION A. General: Examine surfaces to receive paint finish for conditions that will adversely affect execution, performance, or quality of work and which cannot be put into an acceptable condition through reasonable preparatory work as specified herein. 1. Surfaces which are unfit to receive the work of this section shall be repaired, replaced or re-finished such that they are acceptable and such that the work of this section may be done as specified. It shall be the responsibility of the Contractor to ensure that these provisions are strictly enforced. 2. Commencement of Work constitutes acceptance of surfaces and conditions. B. Concrete and Masonry: 1. Alkali Content Testing: Test for alkalinity by performing appropriate tests, and neutralize as required for ph reading between 6.8 and 8.0, unless otherwise recommended by paint manufacturer. Test for ph following test method as described in ASTM D4262, utilizing litmus paper. 2. Moisture Content Testing: Test for moisture content by performing appropriate tests. Maximum moisture content shall not exceed 17 percent as determined by a moisture meter, unless otherwise required by paint manufacturer. 3.2 SURFACE PREPARATION (GENERAL) A. General: Surface preparations and cleaning procedures shall be in strict accordance with the instructions and specifications of the paint manufacturer and with the requirements herein. B. Painting of Factory-Primed Door Hardware: Prior to painting, mask all operating parts so that item works freely after paint is dry. Remove allexcess paint from operating parts and clean and free-up the operation of all parts which do not operate smoothly due to the painting operation. 3.3 SURFACE PREPARATION A. Uncoated Ferrous Metal: Thoroughly degrease surfaces using solvent (SSPC-SP 1) and remove rust and foreign matter by scraping, sanding, wire brushing, or other abrasion methods as necessary in accordance with SSPC-SP 2 and SSPC-SP 3. Remove pits and clean to bright metal before priming. Apply primer on the same day. B. Shop-Coated Ferrous Metal: Thoroughly degrease surfaces and clean using solvent (SSPC-SP 1). Remove loose rust, blistered and peeling paint to bare metal by scraping, sanding, wire brushing, or other abrasion methods in accordance with SSPC-SP 2 or SP 3; feather edges of adjacent sound paint. Dull glossy surfaces by scuff-sanding and wipe down. Spot-prime all abraded portions, rust areas, and bare surfaces with specified primer on same day. C. Galvanized Metal (Unpainted): Clean surfaces, wash and etch, to remove factory films and oily residue as recommended by the paint manufacturer. Responsibility for insuring that the surface is properly prepared rests with the painting Subcontractor. Clean galvanized metal the same day to be painted. If a pretreatment wash primer is recommended by manufacturer, apply pretreatment not more than 8 hours in advance of applying primer.

8 Page 7 of 8 D. Concrete: Clean surfaces free from dirt, grease, oil, efflorescence, and other foreign substances. Remove mortar droppings, glaze, and scale. 3.4 CLEANING PRIOR TO PAINTING A. Remove dust and loose deleterious materials from all surfaces before beginning painting operations. Program the cleaning and painting so that dust and other contaminants from the cleaning process will not fall in wet, newly painted surfaces. 3.5 APPLICATION OF PAINT A. Mixing: Mix paint materials in accordance with the manufacturer's instructions and directions. Mix often enough during application to keep the paint uniform and to ensure complete dispersion of pigment and a uniform composition. 1. Prepare multiple component coatings using all of the contents of the container for each component as packaged by the manufacturer. Mixing of partial kits will not be permitted. Multiple component coatings that have been mixed shall not be used beyond their pot life. Only the components specified and furnished by the manufacturer, including thinner if required, shall be mixed. B. Application: Apply paint in accordance with the manufacturer's directions. Use techniques best suited for substrate and type of material being applied. Brushes and rollers shall be of a type best suited for the type of material being applied. 1. Apply intermediate and finish coats within the manufacturer's recommended top coating time periods. C. Apply each coat of paint as a continuous film of uniform thickness, free from holidays, sags, crawls, pinholes, blisters, unevenness in color, or other evidence of poor workmanship. Repaint thin spots or areas missed in the application and allow to dry before applying next coat of paint. 1. Give special attention to ensure that surfaces, such as edges, corners, crevices, welds and exposed fasteners receive a dry film thickness equivalent to that of flat surfaces. 2. Each coat shall be free of dirt, dust, moisture, and other contaminates prior to application of next coat. D. Allow each coat of paint to thoroughly dry, full thickness of the film, before application of the succeeding coat. Paint is considered dry for recoating when the next coat can be applied without the development of all detrimental film irregularities such as wrinkling, lifting, or loss of adhesion of the previous coat. E. Coverage for each paint material is specified as either the total minimum dry film thickness in mils, or the spreading rate in square feet per gallon over the surface designated. Actual coverage rate will vary depending upon the texture and porosity of the surface, and climatic conditions. 1. The number of coats specified is the minimum required, irrespective of the coating thickness. 2. In the event the required paint thickness is not achieved, or coating shows through, apply additional coats until the color appearance is uniform and required thickness is obtained. Cost for additional coats to prevent show through shall be borne by the Installer.

9 Page 8 of 8 3. Do not exceed manufacturer's recommended maximum film build-up per coat (wet mils). F. Make edges of paint adjoining other materials or colors clean and sharp with no overlapping. G. Do not paint over code-required labels or equipment identification or nomenclature plates. 3.6 DAMAGED PAINT SURFACES A. General: Before final acceptance of the work by the Engineer, repair or re-finish painted surfaces which have been damaged at no additional cost. B. Areas of chipped, peeled, or abraded paint shall be hand or power sanded, feathering the edges. Prime and finish coat the areas using the same material as originally scheduled. Depending on the extent of repair and its appearance, an overall finish coat may be required by the Engineer to achieve uniform appearance. 3.7 CLEAN-UP A. General: During the progress of the work, remove from the project all discarded paint materials, rubbish, cans and rags. Leave premises clean and in orderly condition. B. Cleaning: Upon completion of painting work, clean window glass and other paintspattered surfaces. Remove spattered paint by proper methods of washing and scraping, using care not to scratch or otherwise damage finished surfaces. 3.8 PAINT SCHEDULE - EXTERIOR SURFACES A. Typical Exposed Concrete (other than bridge soffit). Waterborne acrylic stain. 1. Primer: None required. 2. Two Finish Coats: Waterborne acrylic stain. END OF SECTION

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