c. Shop Drawings detailing fabrication and installation of stone. Include cutting and setting

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1 SECTION PART 1 GENERAL 1.1 RELATED DOCUMENTS a. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Specification Sections, apply to this Section. 1.2 SECTION INCLUDE a. This Section includes stone countertops. 1.3 REFERENCES 1. Vanity Tops 2. Countertops a. ASTM International (ASTM) Publications: 1.4 SUBMITTALS 1. C568 Standard Specification for Limestone Dimension Stone A. American National Standards Institute (ANSI) Publications. 2. A118.3 water-cleanable, tile-setting epoxy adhesive A. National Building Granite Quarries Association's (NBGQA) Publications: 3. "Specifications for Architectural Granite" a. General: Submit the following in accordance with Conditions of Contract. b. Submit Letter of Conformance indicating specified items selected for use in project with the following supporting data. 1. Product data for each type of stone, data on physical properties required by referenced ASTM standards. 2. Stonework accessory and other manufactured products required. c. Shop Drawings detailing fabrication and installation of stone. Include cutting and setting d. Drawings indicating sizes, dimensions, sections, and profiles of stones, arrangement and provisions for jointing, supporting, anchoring, and bonding stonework, and details showing relationship with, attachment to, and reception of related work. Final Terminal Building Design Building and Urbanization SH-TBL- FBD- SPE_02 Page 1

2 1. Include large-scale details of decorative surfaces and inscriptions. e. Samples for verification purposes of stone in form of sets for each color, grade, finish, type, and variety of stone required and consisting of stones not less than 30 cm x30 cm. Include two or more Samples in each set and show the full range of variations in appearance characteristics expected in completed Work.. f. Qualification Data: For Fabricator. g. Sealant Compatibility Test Report: From sealant manufacturer, complying with requirements in Division 07 Section "Joint Sealants" and indicating that sealants will not stain or damage stone. h. Maintenance Data: For stone countertops to include in maintenance manuals. Include Product Data for stone-care products used or recommended by Installer, and names, addresses, and telephone numbers of local sources for products. 1.5 QUALITY ASSURANCE a. Single-Source Responsibility for Stone: Obtain each color, grade, finish, type, and variety of stone from a single quarry with resources to provide materials of consistent quality in appearance and physical properties, including the capacity to cut and finish material without delaying the progress of the work. b. Single-Source Responsibility for Mortar and Grout Materials: Obtain mortar ingredients of uniform quality and from one manufacturer for each cementitious and admixture component and from one source or producer for each aggregate. c. Single-Source Responsibility for Other Materials: Obtain each type of stone accessory, sealant, and other materials from one manufacturer for each product. d. Installer Qualifications; Engage an experienced installer who has completed stone cladding similar in material, design, and extent to that indicated for project that has resulted in construction with a record of successful in-service performance. e. Granite materials shall not contain unsafe levels of radioactive materials. 1.6 DELIVERY, STORAGE, AND HANDLING a. Deliver materials to project site in undamaged condition. b. Lift stone with wide-belt slings; do not use wire rope or ropes that might cause staining. Move stone, if required, using dollies with cushioned wood supports. c. Store stone on wood A-frames or pallets with non-staining separators and nonstaining, waterproof covers. Ventilate under covers to prevent condensation. d. Handle stone and related materials to prevent their deterioration or damage due to moisture, temperature changes, contaminants, corrosion, breakage, chipping, or other causes. Final Terminal Building Design Building and Urbanization SH-TBL- FBD- SPE_02 Page 2

3 1. Do not use pinch or wrecking bars. 2. Lift with wide-belt-type slings where possible. Do not use wire rope or ropes containing tar or other substances that might cause staining. If required to move stone, use wood rollers with cushions at end of wood slides. 3. Store stone on wood skids or pallets covered with non-staining, waterproof membrane. 4. Place and stack skids and stones to distribute weight evenly and to prevent breakage or cracking of stones. 5. Protect stored stone from weather with waterproof, non-staining covers or enclosures, but allow air to circulate around stones. 6. Store cementitious materials off the ground, under cover, and in dry location. 1.7 PROJECT CONDITIONS a. Field Measurements: Verify dimensions of construction to receive stone countertops by field measurements before fabrication and indicate measurements on Shop Drawings. b. Established Dimensions: Where field measurements cannot be made without delaying the work, establish dimensions and proceed with fabricating countertops without field measurements. Provide allowance for trimming at site and coordinate construction to ensure actual dimensions correspond to established dimensions. c. Coordinate fabrication schedule with construction progress to avoid delaying the work. 1.8 WARRANTY Two plus one years, as follows, - After testing and commissioning of the works, the Provisional Reception Certificate will be signed. - Two (2) years warranty period will start from the date of the signage of the Provisional Reception Certificate. - During these two (2) years of warranty, the main Contractor will Maintain and Operate, above mentioned systems. - After the finishing of this period, the Final Reception Certificate will be signed. - One (1) year of additional warranty period will start from the date of the signage of the Final Reception Certificate. Final Terminal Building Design Building and Urbanization SH-TBL- FBD- SPE_02 Page 3

4 PART 2 PRODUCTS 2.1 MATERIALS, GENERAL 2.2 GRANITE 2.3 MARBLE a. Comply with referenced standards and other requirements indicated applicable to each type of material required. b. Provide matched blocks from a single quarry for each type, variety, color, and quality of stone required. Extract blocks from a single bed of quarry stratum especially reserved for project, unless stones from randomly selected blocks are acceptable to Owner s Representative for aesthetic effect. c. Quarry stone in manner to ensure that as-quarried block orientations yield finished stone with required characteristics. d. Make quarried blocks available for inspection. a. Granite Building Stone Standard: ASTM C568 b. Manufacturers: 1. Approved Manufacturers: A. Per Interior Design Drawings B. Approved Equal 2. Materials, Finish and Colour: Refer to Interior Finish Index. a. Marble: Comply with ASTM C Stone Abrasion Resistance: Minimum value of 10, based on testing according to ASTM C 241 or ASTM C b. Finish: Polished. c. Match Architect's samples for color, finish, and other stone characteristics relating to aesthetic effects. 2.4 ADHESIVES, GROUT, SEALANTS, AND STONE ACCESSORIES a. General: Use only adhesives formulated for stone and ceramic tile and recommended by their manufacturer for the application indicated. b. Water-Cleanable Epoxy Adhesive: ANSI A118.3, water-cleanable, tile-setting epoxy adhesive. Final Terminal Building Design Building and Urbanization SH-TBL- FBD- SPE_02 Page 4

5 c. Water-Cleanable Epoxy Grout: ANSI A118.3, chemical-resistant, water cleanable, tilesetting and -grouting epoxy. d. Sealant for Countertops: Manufacturer's standard sealant of characteristics indicated below that comply with applicable requirements in Division 07 Section "Joint Sealants" and will not stain the stone it is applied to. 1. Single-component, neutral-curing silicone sealant. 2. Colour: Clear. 3. Use sealants that have a VOC content of 250 g/l or less when calculated according to 40 CFR 59, Subpart D (EPA Method 24). e. Stone Joint Splices: Stainless-steel or brass washers approximately 25mm in diameter and of thickness to fit snugly in saw-cut kerf in edge of stone units. f. Stone Cleaner: Cleaner specifically formulated for stone types, finishes, and applications indicated, as recommended by stone producer and, if a sealer is specified, by sealer manufacturer. Do not use cleaning compounds containing acids, caustics, harsh fillers, or abrasives. g. Stone Sealer: Colorless, stain-resistant sealer that does not affect color or physical properties of stone surfaces, as recommended by stone producer for application indicated. 2.5 STONE FABRICATION, GENERAL a. Select stone for intended use to prevent fabricated units from containing cracks, seams, and starts that could impair structural integrity or function. 1. Repairs that are characteristic of the varieties specified are acceptable provided they do not impair structural integrity or function and are not aesthetically unpleasing, as judged by Architect. b. Grade and mark stone for final locations to produce assembled countertop units with an overall uniform appearance. c. Fabricate stone countertops in sizes and shapes required to comply with requirements indicated, including details on Drawings and Shop Drawings. 1. For marble, comply with recommendations in MIA's "Dimension Stone--Design Manual." 2. Clean sawed backs of stones to remove rust stains and iron particles. 3. Dress joints straight and at right angle to face, unless otherwise indicated. 4. Cut and drill sink ages and holes in stone for anchors, supports, and attachments. Final Terminal Building Design Building and Urbanization SH-TBL- FBD- SPE_02 Page 5

6 5. Provide openings, reveals, and similar features as needed to accommodate adjacent work. 6. Fabricate moulded edges with machines having abrasive shaping wheels made to reverse contour of edge profile to produce uniform shape throughout entire length of edge and with precisely formed arris slightly eased to prevent snipping, and matched at joints between units. Form corners of moulded edges as indicated with outside corners slightly eased, unless otherwise indicated. 7. Finish exposed faces of stone to comply with requirements indicated for finish of each type of stone required and to match approved Samples and mock-ups. Provide matching finish on exposed edges of countertops, splashes, and cut outs. d. Carefully inspect finished stone units at fabrication plant for compliance with requirements for appearance, material, and fabrication. Replace defective units. 2.6 STONE COUNTERTOPS a. General: Comply with recommendations in MIA's "Dimension Stone Design Manual." b. Nominal Thickness: Provide thickness indicated, but not less than 20mm. Gage backs to provide units of identical thickness. c. Edge Detail: As indicated. d. Joints: Fabricate countertops without joints. e. Cutouts and Holes: 1. Under counter Fixtures: Make cut outs for under counter fixtures in shop using template or pattern furnished by fixture manufacturer. Form cut outs to smooth, even curves. A. Provide vertical edges, slightly eased at juncture of cut out edges with top and bottom surfaces of countertop and projecting 5mm into fixture opening. B. Provide vertical edges, rounded to 10-mm radius at juncture of cut out edges with top surface of countertop, slightly eased at bottom, and projecting 5mm into fixture opening. C. Provide 20mm full bull nose edges projecting 10mm into fixture opening. 2. Counter-Mounted Fixtures: Prepare countertops in shop for field cutting openings for counter-mounted fixtures. Mark tops for cut outs and drill holes at corners of cut out locations. Make corner holes of largest radius practical. 3. Fittings: Drill countertops in shop for plumbing fittings, under counter soap dispensers, and similar items. Final Terminal Building Design Building and Urbanization SH-TBL- FBD- SPE_02 Page 6

7 PART 3 EXECUTION 3.1 EXAMINATION a. Examine substrates indicated to receive stone countertops and conditions under which stone countertops will be installed, with Installer present, for compliance with requirements for installation tolerances and other conditions affecting performance. 3.2 PREPARATION 1. For the record, prepare written report, endorsed by Installer, listing conditions detrimental to performance of stone countertops. 2. Proceed with installation only after unsatisfactory conditions have been corrected. a. Advise installers of other work about specific requirements for placement of inserts and similar items to be used by stone countertop Installer for anchoring stone countertops. Furnish installers of other work with Drawings or templates showing locations of these items. b. Clean dirty or stained stone surfaces by removing soil, stains, and foreign materials before setting. Clean stone by thoroughly scrubbing with fiber brushes and then drenching with clear water. Use only mild cleaning compounds that contain no caustic or harsh materials or abrasives. Allow stone to dry before installing. 3.3 CONSTRUCTION TOLERANCES a. Variation from Plumb: For vertical lines and surfaces, do not exceed 2mm in 1200mm. b. Variation from Level: Do not exceed 3mm in 2400mm, 6mm maximum. c. Variation in Joint Width: Do not vary joint thickness more than 6mm of nominal joint width. d. Variation in Plane at Joints (Lipping): Do not exceed 0.5-mm difference between planes of adjacent units. e. Variation in Line of Edge at Joints (Lipping): Do not exceed 0.3-mm difference between edges of adjacent units, where edge line continues across joint. 3.4 INSTALLATION OF COUNTERTOPS a. General: Install countertops over plywood sub-tops with full spread of water cleanable epoxy adhesive. b. Do not cut stone in field, unless otherwise indicated. If stone countertops or splashes require additional fabrication not specified to be performed at Project site, return to fabrication shop for adjustment. Final Terminal Building Design Building and Urbanization SH-TBL- FBD- SPE_02 Page 7

8 c. Do necessary field cutting as stone is set. Use power saws with diamond blades to cut stone. Cut lines straight, true, and at right angles to finished surfaces unless beveling is required for clearance. Ease edges slightly to prevent snipping. d. Set stone to comply with requirements indicated on Drawings and Shop Drawings. Shim and adjust stone to locations indicated, with uniform joints of widths indicated and with edges and faces aligned according to established relationships and indicated tolerances. e. Bond joints with stone adhesive and draw tight as countertops are set. Mask areas of countertops adjacent to joints to prevent adhesive smears. f. Space joints with 2mm gap for filling with grout. Use temporary shims to ensure uniform spacing. 1. Install metal splices in kerfs in stone edges at joints where indicated. Fill kerfs before inserting splices and remove excess immediately after adjoining units are drawn into position. 2. Clamp units to temporary bracing, supports, or each other to ensure that countertops are properly aligned and joints are of specified width. g. Complete cutouts not finished in shop. Mask areas of countertops adjacent to cutouts to prevent damage while cutting. Use power saws with diamond blades to cut stone. Make cut outs to accurately fit items to be installed, and at right angles to finished surfaces unless beveling is required for clearance. Ease edges slightly to prevent snipping. h. Grout joints to comply with ANSI A Remove temporary shims before grouting. Tool grout uniformly and smoothly with plastic tool. i. Apply sealant to joints and gaps specified for filling with sealant; comply with Division 07 Section "Joint Sealants." Remove temporary shims before applying sealant. 3.5 SEALER APPLICATION a. All surfaces must be clean and free from all loose grit and debris, satins, dirt, and wax coatings. Surfaces shall remain dry for a minimum of 24 hours before the application of sealer and remain dry for 24 hours after the application of sealer. b. Test on a small area before using to determine if the product is acceptable with type of stone. c. A uniform coating of sealer shall be applied AFTER installation of stone materials. Install in strict accordance with Sealer manufacturer's recommendations. 3.6 ADJUSTING AND CLEANING a. In-Progress Cleaning: Clean countertops as work progresses. Remove adhesive, grout, mortar, and sealant smears immediately. Final Terminal Building Design Building and Urbanization SH-TBL- FBD- SPE_02 Page 8

9 b. Remove and replace stone countertops of the following description: 1. Broken, chipped, stained, or otherwise damaged stone. Stone may be repaired if methods and results are approved by Architect. 2. Defective countertops. 3. Defective joints, including misaligned joints. 4. Interior stone countertops and joints not matching approved Samples and mockups. 5. Interior stone countertops not complying with other requirements indicated. c. Replace in a manner that results in stone countertops matching approved Samples and mock-ups, complying with other requirements, and showing no evidence of replacement. d. Clean stone countertops not less than six days after completion of installation, using clean water and soft rags. Do not uses wire brushes, acid-type cleaning agents, cleaning compounds with caustic or harsh fillers, or other materials or methods that could damage stone. e. Sealer Application: Apply stone sealer to comply with stone producer's and sealer manufacturer's written instructions. END OF SECTION Final Terminal Building Design Building and Urbanization SH-TBL- FBD- SPE_02 Page 9