END OF ADDENDUM 02 SPECIFICATION ITEMS

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1 ALTA VIEW HOSPITAL EDUCATION CENTER BID DOCUMENTS - ADDENDUM February VCBO NEW SECTIONS A. ADD the following sections, issued herewith, to the Project Manual. Add section names and numbers to overall Table of Contents and to individual section Tables of Contents. 1. Section INTUMESCENT PAINTS 2. Section METAL GRILLE CEILINGS END OF ADDENDUM 02 SPECIFICATION ITEMS ADDENDUM LANGUAGE BID DOCUMENTS - ADDENDUM 02 PAGE 1

2 SECTION INTUMESCENT PAINTS PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section. 1.2 SUMMARY A. This Section includes surface preparation and application of intumescent paints to scheduled items and surfaces, including prime and finish coats. B. Use of intumescent paint shall be limited to areas where indicated on Drawings and where structural steel is exposed to public view. C. Related Sections: 1. Division 5 sections for coordination of primers on structural elements with intumescent paints for compatibility. 2. Section "Sprayed Fire-Resistive Materials" for cementitious fireproofing. 3. Section Painting for top coats, where allowed by intumescent manufacturer. 1.3 SUBMITTALS A. Product Data: For each intumescent paint system indicated. Include block fillers and primers. B. Material List: Provide an inclusive list of required intumescent paint materials. Indicate each material and cross-reference specific coating, finish system, and application. Identify each material by manufacturer's catalog number and general classification. C. Manufacturer's Information: Provide manufacturer's technical information, including label analysis and instructions for handling, storing, and applying intumescent paint materials. D. Certification: By the manufacturer that products supplied comply with local regulations controlling use of VOCs. E. Samples for Selection: Manufacturer's color charts showing the full range of colors available for each intumescent paint finish indicated. 1. After color selection, the Architect will furnish color chips for surfaces to be coated. F. Samples for Verification: For each color to be applied, with texture to simulate actual conditions, on representative samples of the actual substrate. 1. Provide stepped Samples, defining each separate coat, including fillers, primers, and finish coats. Use representative colors when preparing Samples for review. Resubmit until required sheen, color, and texture are achieved. INTUMESCENT PAINTS BID DOCUMENTS - ADDENDUM 02 SECTION PAGE 1

3 2. Provide a list of materials and applications for each coat of each finish sample. Label each sample for location and application. 3. Submit Samples on the following substrates for the Architect's review of color and texture only: a. Ferrous Metal: Two 8-inch- square samples of flat metal, and two 8-inch- long samples of solid metal for each color and finish. G. Qualification Data: For firms and persons specified in "Quality Assurance" Article to demonstrate their capabilities and experience. Include lists of completed projects with project names and addresses, names and addresses of architects and owners, and other information specified. H. Product Test Reports: From a qualified testing agency indicating that intumescent paint materials comply with requirements indicated, based on comprehensive testing of current product formulations. 1.4 QUALITY ASSURANCE A. Applicator Qualifications: An experienced applicator who has completed intumescent painting applications similar in material and extent to that indicated for the Project and whose work has resulted in application with a record of successful in-service performance. B. Source Limitations: Obtain block fillers, primers, and undercoat materials for each intumescent paint system from the same manufacturer as the finish coats. 1. Notify the Architect of problems anticipated using specified coating systems. C. Fire-Test-Response Characteristics: Provide intumescent paint materials with the following surface-burning characteristics as determined by testing identical products per ASTM E 84 by UL or another testing and inspecting agency acceptable to authorities having jurisdiction. 1. Flame Spread: Smoke Developed: 25. D. Standard: Intumescent paint is to meet the requirements of Technical Manual 12-B second edition of the AWCI Association of the Wand and Ceiling Industry, 513 West Broad Street, Suite 210, Falls Church, VA (703) E. Benchmark Samples (Mockups): Provide a full-coat benchmark finish sample for each type of coating and substrate required. Duplicate finish of approved sample Submittals. 1. The Architect will select one surface for each substrate to receive intumescent paint to represent surfaces and conditions for application of each type of coating. a. Wall Surfaces: Provide samples of at least 100 sq. ft. b. Small Areas and Items: The Architect will designate an item or area required. 2. Notify the Architect seven days in advance of dates and times when benchmark samples will be applied. 3. Apply benchmark samples, according to requirements for the completed Work, after permanent lighting and other environmental services have been activated. 4. Obtain the Architect's approval of benchmark samples before starting intumescent paint application. 5. Maintain benchmark samples during construction in an undisturbed condition as a standard for judging the completed Work. 6. Final approval of colors will be from benchmark samples. INTUMESCENT PAINTS BID DOCUMENTS - ADDENDUM 02 SECTION PAGE 2

4 1.5 DELIVERY, STORAGE AND HANDLING A. Deliver intumescent paint materials to the Project site in manufacturer's original, unopened packages and containers bearing manufacturer's name and label, and the following information: 1. Product name or title of material. 2. Product description (generic classification or binder type). 3. UL label, indicating tested fire rating. 4. Manufacturer's stock number and date of manufacture. 5. Contents by volume, for pigment and vehicle constituents. 6. Thinning and mixing instructions. 7. Application instructions. 8. Color name and number. 9. VOC content. 10. Handling instructions and precautions. B. Store materials not in use in tightly covered containers in a well-ventilated area at a minimum ambient temperature of 45 degrees F. Maintain containers used in storage in a clean condition, free of foreign materials and residue. 1. Protect intumescent paint materials from freezing. Keep storage area neat and orderly. Remove oily rags and waste daily. Take necessary measures to ensure that workers and work areas are protected from fire and health hazards resulting from handling, mixing, and application. 1.6 PROJECT CONDITIONS A. Temperature Conditions: Apply coatings only when the temperature of surfaces to be coated and surrounding air temperatures are above 50 degrees F. B. Weather Conditions: Do not apply intumescent paints in snow, rain, fog or mist; or when the relative humidity exceeds 85 percent; or at temperatures less than 5 degrees F above the dew point; or to damp or wet surfaces. Allow wet surfaces to dry thoroughly and attain the temperature and conditions specified before proceeding with or continuing with painting operations. 1. Painting may continue during inclement weather if surfaces and areas to be painted are enclosed and heated within temperature limits specified by manufacturer during application and drying periods. 1.7 EXTRA MATERIALS A. Furnish extra intumescent paint materials from the same production run as materials applied in quantities described below. Package intumescent paint materials in unopened, factory-sealed containers for storage, and identify with labels describing contents. Deliver extra materials to the Owner. 1. Quantity: Furnish the Owner with extra intumescent paint materials in the quantities indicated below: a. Semigloss, Latex Intumescent Paint: 2 gallons of each color applied. INTUMESCENT PAINTS BID DOCUMENTS - ADDENDUM 02 SECTION PAGE 3

5 PART 2 - PRODUCTS 2.1 MANUFACTURERS A. Available Products: Subject to compliance with requirements, products that may be incorporated into the Work include, but are not limited to, products listed in the Intumescent Paint Schedule. 2.2 INTUMESCENT PAINT MATERIALS, GENERAL A. Material Compatibility: Provide fillers, primers, undercoats, and finish-coat materials that are compatible with one another and 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 intumescent paint materials. Intumescent paint materials not displaying manufacturer's product identification will not be acceptable. 1. Provide water-reducible or solvent-reducible, pigmented intumescent paint materials; formulated to retard flame spread and intended for use on interior combustible and noncombustible surfaces. 2. Proprietary Names: Use of manufacturer's proprietary product names to designate colors or materials is not intended to imply that products named are required to be used to the exclusion of equivalent products of other manufacturers. Furnish manufacturer's material data and certificate of performance for proposed substitutions. C. Colors: Multiple colors as selected by the Architect from manufacturer's full range. PART 3 - EXECUTION 3.1 EXAMINATION A. Examine substrates, areas, and conditions, with the Applicator present, under which painting will be performed for compliance with paint application requirements and conditions affecting coating performance. 1. Proceed with intumescent paint application only after unsatisfactory conditions have been corrected and surfaces receiving paint are thoroughly dry. 2. Start of painting will be construed as the Applicator's approval of surfaces and conditions within a particular area. B. Coordination of Work: Review other Sections of these Specifications in which primers are provided to ensure compatibility of the total intumescent paint system for various substrates. On request, furnish information on characteristics of finish materials to ensure use of compatible primers. 1. Notify the Architect about anticipated problems using coatings specified over substrates primed by others. INTUMESCENT PAINTS BID DOCUMENTS - ADDENDUM 02 SECTION PAGE 4

6 3.2 PREPARATION A. General: Remove hardware, hardware accessories, plates, machined surfaces, lighting fixtures, and similar items already installed that are not to be painted. If removal is impractical or impossible because of the size or weight of the item, provide surface-applied protection before surface preparation and painting. 1. After completing painting operations in each space or area, reinstall items removed using workers skilled in the trades involved. B. Cleaning: Before applying coatings or other surface treatments, clean substrates of substances that could impair bond of the intumescent paint systems. 1. Schedule cleaning and painting application so dust and other contaminates will not fall on wet, newly painted surfaces. C. Surface Preparation: Clean and prepare surfaces to be painted according to manufacturer's written instructions for each particular substrate condition and as specified. 1. Surfaces to be coated must be free of oil, grease, dirt, rust, and loose or powdery paint. 2. Remove oil and grease before mechanical cleaning. 3. Remove existing water-sensitive coatings completely. Repair cracks and gouges. Treat previously painted slick or glossy surfaces with a strong detergent and thoroughly clean or rub with sandpaper to reduce surface shine and to promote adhesion. 4. Provide barrier coats over incompatible primers or remove and reprime. 5. Ferrous Metals: Clean ungalvanized ferrous-metal surfaces that have not been shop primed. Remove oil, grease, dirt, loose mill scale, and other foreign substances. Use solvent or mechanical cleaning methods that comply with SSPC's recommendations. a. Blast steel surfaces as recommended by intumescent paint manufacturer and according to SSPC-SP 10/NACE No. 2. b. Touch up bare areas and shop-applied prime coats that have been damaged. Wire-brush, clean with solvents recommended by intumescent paint manufacturer, and touch up with the same primer as the shop coat. 6. Galvanized Metal Surfaces: Clean galvanized metal surfaces with nonpetroleum-based solvents so surface is free of oil and surface contaminants according to manufacturer's written instructions. Remove pretreatment from galvanized sheet metal fabricated from coil stock by mechanical methods. D. Material Preparation: Mix and prepare intumescent paint materials according to manufacturer's written instructions. 1. Maintain containers used in mixing and applying intumescent paint in a clean condition, free of foreign materials and residue. 2. Stir material before application to produce a mixture of uniform density, and as required during application. Do not stir surface film into material. If necessary, remove surface film and strain material before using. 3. Thinning: Use only thinners recommended by manufacturer and only within recommended limits. INTUMESCENT PAINTS BID DOCUMENTS - ADDENDUM 02 SECTION PAGE 5

7 3.3 APPLICATION A. General: Apply intumescent paints to exposed surfaces indicated according to manufacturer's written instructions. Use applicators and techniques best suited for substrate and type of material being applied. 1. Colors: Paint colors, surface treatments, and finishes are indicated in the schedules in the Contract Documents. Where an item or surface is not specifically mentioned in the schedules, coat the same color as similar adjacent materials or surfaces. If a color is not designated, the Architect will select a color from those available. 2. Do not apply coatings over dirt, rust, scale, grease, moisture, scuffed surfaces, or conditions indicated as unacceptable in manufacturer's written instructions, or to surfaces that are otherwise detrimental to forming an acceptable coating. 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. The number of coats and the film thickness required are the same regardless of the application method. Do not apply succeeding coats until the previous coat has cured as recommended by the manufacturer. If sanding is required to produce a smooth, even surface according to manufacturer's written instructions, sand between applications. 2. If undercoats or other conditions show through the 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. 3. Omit primer on metal surfaces that have been shop primed or touchup painted. 4. Allow sufficient time between successive coats to permit proper drying. Do not recoat surfaces until paint has dried to where it feels firm, does not deform or feel sticky under moderate thumb pressure, and where applying another coat of paint does not cause the undercoat to loose adhesion. C. Application Procedures: Apply coatings by brush, roller, spray, or other applicators according to manufacturer's written instructions. 1. Brushes: Use brushes best suited for the material applied. Use brush of appropriate size for the surface or item being painted. 2. Rollers: Use rollers made of carpet, velvet back, or high-pile sheep's wool as recommended by the manufacturer for the material and texture required. 3. Spray Equipment: Use airless spray equipment with orifice size as recommended by the manufacturer for the material and texture required. D. Tinting: Tint each undercoat a lighter shade to simplify identification of each coat when multiple coats of the same material are applied. Tint undercoats to match the color of the finish coat, but provide sufficient difference in the shade of the undercoats to distinguish each separate coat. E. Minimum Coating Thickness: Apply materials at not less than manufacturer's recommended spreading rate for the surface to be coated. Provide the total dry film thickness of the entire system as recommended by the manufacturer to provide surface-burning characteristics specified. INTUMESCENT PAINTS BID DOCUMENTS - ADDENDUM 02 SECTION PAGE 6

8 F. Filler Coat: Apply filler over coarse and porous materials at a rate to ensure complete coverage with all pores filled. G. Prime Coat: Before applying finish coats, apply a prime coat, as recommended by the manufacturer, to substrates required to be painted that have not been prime coated by others. Recoat primed and sealed surfaces where evidence of suction spots or unsealed areas appears in the first coat. H. Intumescent Paint: Apply intumescent paint by brush, roller, or spray as recommended by the coating manufacturer for the type of substrate involved according to manufacturer's written instructions. 1. Where multiple finish coats are required, allow the base or first coat to dry before applying topcoat according to manufacturer's written instructions. 2. Apply nonintumescent topcoats where scheduled, using materials and application methods according to manufacturer's written instructions. I. Completed Work: Match approved samples for color, texture, and coverage. Removed, refinish, or repaint work not complying with specified requirements. 3.4 FIELD QUALITY CONTROL A. The Owner reserves the right to invoke the following test procedure at any time and as often as the Owner deems necessary during the period when paint is being applied: 1. The Owner will engage the services of an independent testing agency to sample paint materials being used. Samples of material delivered to the Project site will be taken, identified, sealed, and certified in the presence of the Contractor. 2. The testing agency will perform appropriate tests for the following characteristics as required by the Owner: a. Qualitative material analysis. b. Absorption. c. Accelerated weathering. d. Accelerated yellowness. e. Color retention. f. Alkali resistance. g. Abrasion resistance. h. Mildew resistance. i. Apparent reflectivity. j. Washability. k. Dry opacity. l. Recoating. m. Skinning. 3. Owner may direct the Contractor to stop painting if test results show materials being used do not comply with specified requirements. The Contractor shall remove noncomplying paint materials from the Project site, pay for testing, and repaint surfaces previously painted with rejected materials. If necessary, the Contractor may be required to remove rejected materials from previously painted surfaces if, on repainting with the specified materials, the two coatings are incompatible. INTUMESCENT PAINTS BID DOCUMENTS - ADDENDUM 02 SECTION PAGE 7

9 3.5 CLEANING A. Clean Up: At the end of each workday, remove rubbish, empty cans, rags, and other discarded materials from the Project site. 1. After completing painting, clean glass and paint spattered surfaces. Remove spattered paint by proper methods. Be careful not to scratch or otherwise damage adjacent finished surfaces. 3.6 PROTECTION A. Protect work of other trades, whether being painted or not, against damage from painting. Correct damage by cleaning, repairing or replacing, and repainting as approved by the Architect. Leave the work in an undamaged condition. B. Provide "Wet Paint" signs to protect newly painted finishes. Remove temporary protective wrappings provided by others to protect their work after completing painting operations. 1. After completing work of other trades, touch up and restore damaged or defaced surfaces. Comply with PDCA P INTUMESCENT PAINT SCHEDULE A. Ferrous Metal: Provide the following intumescent paint systems over interior ferrous-metal surfaces: 1. Semigloss Finish: Two finish coats over a primer. a. Prime Coat: Latex-type primers applied at the spreading rate recommended by the manufacturer to achieve a total dry film thickness of not less than 4 mils. 1) Albi: 487S Corrosion Resistant Metal Primer. 2) FRL: Metal primer as approved by FRL. 3) Flame: 3004 Lead Free Universal Primer. 4) ICI: 4570 Gild-Guard alkyd Metal Primer. b. First Coat: Flat, intumescent-type, fire-retardant, latex paint applied at the spreading rate recommended by the manufacturer to achieve a total dry film thickness of not less than 4 mils. 1) Albi: Albi-Cote FRL Fire-Retardant Latex Flat Interior finish. 2) FRL: 9788 Flexible Solvent Based Fire Retardant Coating. 3) Flame: Flat Latex Intumescent Fire Resistant Paint 4) ICI: 5027 Ultra-Hide Insul-Blaze Fire Retardant Coating. c. Second Coat: Semigloss, intumescent-type, fire-retardant, latex paint applied at the spreading rate recommended by the manufacturer to achieve a total dry film thickness of not less than 4 mils. 1) Albi: Albi-Cote TC Semi-Gloss Fire-Inert Interior Latex Coating. 2) FRL: Topcoat X Water Resistant Semi-Gloss Pigmented Topcoat. 3) Flame: Semi-Gloss Latex Fire Retardant Coating. 4) ICI: 5037 Ultra-Hide Insul-Blaze Latex Overcoat. INTUMESCENT PAINTS BID DOCUMENTS - ADDENDUM 02 SECTION PAGE 8

10 B. Galvanized Metal: Provide the following intumescent paint systems over interior galvanized metal surfaces: 1. Semigloss Finish: Two finish coats over a primer. a. Prime Coat: Latex-type primers applied at the spreading rate recommended by the manufacturer to achieve a total dry film thickness of not less than 4 mils. 1) Albi: 487S Corrosion Resistant Metal Primer 2) FRL: 634 Latex Emulsion Universal Primer 3) Flame: 3005 Two Component Epoxy Primer 4) ICI: 5229 Gild-Guard All-Purpose Metal Primer b. First Coat: Flat, intumescent-type, fire-retardant, latex paint applied at the spreading rate recommended by the manufacturer to achieve a total dry film thickness of not less than 4 mils. 1) Albi: Albi-Cote FRL Fire-Retardant Latex Flat Interior finish. 2) FRL: 9788 Flexible Solvent Based Fire Retardant Coating. 3) Flame: Flat Latex Intumescent Fire Resistant Paint 4) ICI: 5027 Ultra-Hide Insul-Blaze Fire Retardant Coating. c. Second Coat: Semigloss, intumescent-type, fire-retardant, latex paint applied at the spreading rate recommended by the manufacturer to achieve a total dry film thickness of not less than 4 mils. 1) Albi: Albi-Cote TC Semi-Gloss Fire-Inert Interior Latex Coating. 2) FRL: Topcoat X Water Resistant Semi-Gloss Pigmented Topcoat. 3) Flame: Semi-Gloss Latex Fire Retardant Coating. 4) ICI: 5037 Ultra-Hide Insul-Blaze Latex Overcoat. END OF SECTION INTUMESCENT PAINTS BID DOCUMENTS - ADDENDUM 02 SECTION PAGE 9

11 SECTION METAL GRILLE CEILINGS PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section includes decorative metal grille ceilings (Ceilings Type "F") applied to structural steel stud support framing. B. Related Sections: 1. Section "Structural Metal Framing" for metal stud system support framing for metal grille ceilings. 1.3 PREINSTALLATION MEETINGS A. Preinstallation Conference: Conduct conference at Project site. 1.4 ACTION SUBMITTALS A. Product Data: Include construction details, material descriptions, dimensions of individual components and profiles, and finishes for ceiling grilles. B. Shop Drawings: Indicate grille layout, attachment and anchorage details, support framing, perimeter details, and adjoining construction. C. Delegated-Design Submittal: For installed products indicated to comply with performance requirements and design criteria, including analysis data signed and sealed by the qualified professional engineer licensed in the State of the Project, and responsible for their preparation. 1.5 INFORMATIONAL SUBMITTALS A. Coordination Drawings: Reflected ceiling plans, drawn to scale, on which the following items are shown and coordinated with each other, using input from installers of the items involved: 1. Lighting fixtures. 2. Air outlets and inlets. 3. Speakers. 4. Sprinklers. B. Qualification Data: For installer. METAL GRILLE CEILINGS BID DOCUMENTS - ADDENDUM 02 SECTION PAGE 1

12 1.6 QUALITY ASSURANCE A. Installer Qualifications: Fabricate and install work by persons skilled and experienced in type and quality of work indicated, and with minimum three consecutive years' experience, and approved by grille manufacturer for application indicated. 1.7 DELIVERY, STORAGE, AND HANDLING A. Deliver suspended metal grille components to Project site in original, unopened packages and store them in a fully enclosed, conditioned space where they are protected against damage from moisture, humidity, temperature extremes, direct sunlight, surface contamination, and other causes. B. Handle metal grilles and accessories to avoid damaging units and finishes. 1.8 FIELD CONDITIONS A. Field Measurements: Indicate measurements on Shop Drawings. PART 2 - PRODUCTS 2.1 PERFORMANCE REQUIREMENTS A. Delegated Design: Engage a qualified professional engineer to assess design loads of materials requiring supporting, and design support framing and anchoring of metal grille ceilings. 2.2 MANUFACTURERS A. Source Limitations: Obtain metal ceiling grilles through one source from a single manufacturer. B. Acceptable Manufacturer: Subject to compliance with requirements of Contract Documents, provide product by manufacturer listed below. 1. Manufacturer: Kadee Industries, Inc. 2. Product: SSS Clean Tread Model KD58 Grilles. 2.3 CEILING GRILLES A. Material: Stainless steel, x inch surface wires spaced with inch slot opening, and welded to rod supports of size and spacing to suit performance requirements. B. Grille Depth: 5/8 inch. C. Locking Devices: Manufacturer's standard stainless steel visual type with machine screws. METAL GRILLE CEILINGS BID DOCUMENTS - ADDENDUM 02 SECTION PAGE 2

13 D. Anchoring and Grille Attachment Devices: Type as recommended by grille manufacturer for application indicated. 2.4 PERIMETER FRAMES A. Provide manufacturer standard stainless steel knock-down frames of size and style for grille type, for flush installation of grilles, complete with installation anchorages and accessories. 2.5 MATERIALS AND FINISHES A. Stainless Steel Materials and Stainless Steel Finishes: Match existing Women's Center vestibule ceiling. B. Stainless Steel Angles: ASTM A276 or ASTM A479, corrosion-resistant, Type CEILING SUPPORT FRAMING A. Support Framing: Structural steel stud framing as specified in section "Structural Metal Framing." 2.7 FABRICATION A. Ceiling Grilles and Frames: 1. General: Shop fabricate grilles and frames to match existing ceiling and floor grille systems. 2. Unless otherwise indicated, orient tread rails, and provide joints at same locations as entrance floor grilles in same area. 3. Equip grilles with safety cable attached to support framing to support grill during installation and during removal for maintenance. B. Protect mechanical finishes on exposed surfaces from damage by applying a strippable, temporary protective covering before shipping. C. Appearance of Finished Work: Noticeable variations in same piece are not acceptable. Variations in appearance of adjoining components are acceptable if they are within the range of approved Samples and are assembled or installed to minimize contrast. PART 3 - EXECUTION 3.1 EXAMINATION A. Examine substrates, areas, and conditions, with Installer present, for compliance with requirements for installation tolerances and other conditions affecting performance of the Work. B. Proceed with installation only after unsatisfactory conditions have been corrected. METAL GRILLE CEILINGS BID DOCUMENTS - ADDENDUM 02 SECTION PAGE 3

14 3.2 PREPARATION A. Ceiling Support Framing: Install structural steel stud framing as soffit application and as specified in section B. Paint support framing and other construction above ceiling matte black. 3.3 INSTALLATION A. Install ceiling grilles, frames, and related components, according to Shop Drawings and manufacturer's written instructions. 1. Set and secure materials and components in place, level; grille joints uniform, straight and aligned. Conceal fasteners. 2. Install necessary shims, spacers, and anchorages for proper location, and secure attachment of frames. 3. Mechanically join frame; provide hairline joints. 3.4 INSTALLATION TOLERANCES A. Install to tolerance of 1/8 inch in 96 inches level. B. Maximum Offset from True Alignment with Abutting Materials: 1/16 inch. 3.5 CLEANING A. Clean exposed surfaces of suspended metal grilles, including trim and edge moldings, after removing strippable, temporary protective covering if any. Comply with manufacturer's written instructions for stripping of temporary protective covering, cleaning, and touchup of minor finish damage. Remove and replace grid components that cannot be successfully cleaned and repaired to permanently eliminate evidence of damage, including dented and deformed grilles. END OF SECTION METAL GRILLE CEILINGS BID DOCUMENTS - ADDENDUM 02 SECTION PAGE 4