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04220 Concrete Unit Masonry Re-submit For Permit SECTION 04 22 01 CONCRETE UNIT MASONRY PART 1 - GENERAL 1.01 REFERENCE STANDARDS A. American Concrete Institute (ACI): 1. 315 Details and Detailing of Concrete Reinforcing. 2. 530.1/ACSE 6/ Specification for Masonry Structures. TMS 602 B. American Society for Testing and Materials (ASTM): 1. A36/A36M Carbon Structural Steel. 2. A82 Steel Wire, Plain, for Concrete Reinforcement. 3. A153 Zinc Coating Hot-Dip on Iron and Steel Hardware. 4. A615/A615M Deformed and Plain Billet-Steel Bars for Concrete Reinforcement. 5. A641 Zinc-Coated (Galvanized) Carbon Steel Wire. 6. C90 Load-Bearing Concrete Masonry Units. 7. C129 Non-Load-Bearing Concrete Masonry Units. 8. C270 Mortar for Unit Masonry. 9. D1056 Flexible Cellular Materials - Sponge or Expanded Rubber. 10. D2000 Classification System for Rubber Products in Automotive Applications. C. American Welding Society (AWS): 1. D1.1 Structural Welding Code - Steel. D. Underwriters Laboratories Inc. (UL): 1. 618 Standards for Safety for Concrete Masonry Units. 1.02 SUBMITTALS A. General: In compliance with Section 01 33 00 and as specified herein. B. Letter of Conformance; (FIO): In compliance with requirements of, and in format included in, Section 01 33 00. 1.03 QUALITY ASSURANCE A. Mock-Up: Decorative Concrete Masonry Unit Mock-Up: Lay 6U-0" long x 6U-0" high mock-up panel of decorative concrete masonry units with concrete masonry backup and mortar specified in other Sections of Project Manual. Mock-up location determined by Architect. 1. Mock-up must show: a. Bonding. b. Mortar color. c. Joint tooling. d. Each different masonry color and texture. e. Reinforcement. f. Cavity clearance. g. Workmanship. h. Erect mock-up minimum 14 days prior to beginning masonry Work. If initial mock-up is rejected, erect additional mock-ups until accepted by Architect. 2. Accepted mock-up establishes minimum design and quality standards for decorative concrete masonry work. 3. Do not destroy mock-up until directed by Architect. Sandy Springs Gateway Concrete Unit Masonry 212087.02 - © Copyright 2013 Smallwood, Reynolds, Stewart, Stewart & Associates, Inc. 04 22 01.1 Re-submit For Permit 4. Apply cleaning agent specified herein to test area of mock-up. Report all adverse affects to Architect immediately. 5. Protect mock-ups from elements with weather-resistant membrane. B. Fire-Resistance Ratings: Where indicated, provide materials and construction identical to those of assemblies with fire-resistance ratings determined per ASTM E119 by testing and inspecting agency, or by equivalent concrete masonry thickness, or by UL classifications, or by another means, as acceptable to authorities having jurisdiction. 1.04 DELIVERY, STORAGE, AND HANDLING A. Protect masonry materials during transportation, handling and storage. 1. Store above ground on level platforms which allow air circulation under stacked units. 2. Cover with heavy weatherproof coverings to prevent staining by weather, dirt, mud, oils and grease. 3. Carefully handle to prevent chipping, spalling, cracking and all other damage which impairs strength, durability and appearance. 4. Discard and remove damaged materials from Project site. 1.05 PROJECT CONDITIONS A. Environmental Requirements: 1. Do not lay masonry when temperature is below 32E F. on rising temperature or below 40E F. on falling temperature, unless adequate precautions are taken to prevent Work from freezing. 2. During freezing or near freezing weather, provide adequate equipment or cover to protect completed portions of Work and to maintain minimum temperatures above 50E F. PART 2 - PRODUCTS 2.01 CONCRETE MASONRY UNITS A. Nonload-Bearing Concrete Block: ASTM C129, Type II, Grade N, nonmoisture-controlled hollow core and solid core lightweight units. B. Load-Bearing Concrete Block: ASTM C90 hollow and solid core, Type II, Grade N, nonmoisture- controlled lightweight units. C. Fire Rated Concrete Block: Manufacture in compliance with UL 618 to UL certifications for one hour rating. E. Shapes and Sizes: Uniform texture, with square and bullnose corners, and free from chips, cracks and spalls. 1. Sizes: Standard units with nominal face dimensions of 8-inch x 16-inch, thicknesses indicated. Units smaller than one-half unit are not acceptable. 2. Shapes: Provide stretchers, lintel and bond beams, closed end partition blocks and other shapes indicated and required. 2.02 REINFORCEMENT, ANCHORAGES AND ACCESSORIES A. Horizontal Reinforcing: 9 gauge wire conforming to ASTM A82. 1. Standard Ladder Type: a. Dur-O-Wal, Inc. "DA 3600 Ladur Eye". b. Hohmann & Barnard, Inc. “#270 Ladder-Eye Mesh”. c. Masonry Reinforcing Corporation of America, Wire Bond, “Core Clear Ladder Type Series 200". 2. At concrete masonry unit with brick veneer joints, provide integral box ties with double eye section welded every 1U-3" on center, and associated double leg box pintle ties for brick anchorage. 3. Finish: ASTM A153, Class B-2 with 1.5 ounces zinc coating per foot for exterior work and mill galvanized with 0.10 ounces zinc coating per foot for interior work. 4. Provide factory prefabricated "L" sections for corners, "T" wall intersections, and other special conditions; no toothing permitted. Sandy Springs Gateway Concrete Unit Masonry 212087.02 - © Copyright 2013 Smallwood, Reynolds, Stewart, Stewart & Associates, Inc. 04 22 01.2 Re-submit For Permit 5. Widths: As recommended by manufacturer for wall thicknesses indicated. B. Reinforcing Bars: ASTM A615, Grade 60, as specified in Section 03 20 00. Provide ASTM A82 minimum W1.5 galvanized positioners. C. Flexible Anchoring; Masonry to Steel Columns and Beams: Fabricated from ASTM A82 galvanized steel wire; 3/16-inch diameter wire fabricated with triangular ends with 1/4-inch diameter wire crimped anchors for welding to columns or machine nuts and sized to extend within one-inch of masonry unit face. 1. Dur-O-Wal, Inc. "DA 700". 2. Heckmann Building Products, Inc. “No. 317" with “No.316". 3. Hohmann & Barnard, Inc. “VBT”. 4. Masonry Reinforcing Corporation of America, Wire Bond, “1000, Type III” with “1100". D. Dovetail Anchoring; Masonry to Concrete Walls and Columns: 1. Slots: Standard one-inch wide x one-inch deep with 5/8-inch throat, minimum 24 gauge galvanized steel. a. Dur-O-Wal, Inc. "DA 100". b. Heckmann Building Products, Inc. ”100". c. Hohmann & Barnard, Inc. “#305". d. Masonry Reinforcing Corporation of America, Wire Bond, “1304". 2. Anchors: 3-1/2 inch long x 3/16-inch diameter galvanized. a. Dur-O-Wal, Inc. "DA 720". b. Heckmann Building Products, Inc. “No. 103". c. Hohmann & Barnard, Inc. “#315-Flexible Dovetail Brick Tie”. d. Masonry Reinforcing Corporation of America, Wire Bond, “2102". E. Wall Ties: As specified in Section 04 21 00 and of length to attach to wall and extend to midpoint of brick. F. Control Joints: ASTM D2000, Designation 2AA-805, solid rubber, ASTM D2240 durometer hardness. 1. Dur-O-Wal, Inc. “DA 2005". 2. Heckmann Building Products, Inc. “No. 352". 3. Hohmann & Barnard, Inc. “RS Series". 4. Masonry Reinforcing Corporation of America, Wire Bond, “2902". G. Compressible Filler: Neoprene, urethane or polyvinyl chloride premolded filler strips complying with ASTM D1056, Type 2, Class A, Grade 1; compressible up to 35%; of width and thickness indicated. H. Thru-Wall Flashing: Stainless steel and self-adhering flexible flashing system specified in Section 07 60 00. I. Sheet Metal Flashings: Specified in Section 07 60 00. J. Weep Tubes: Standard 3/8-inch o.d. x 4-inch long clear plastic weep hole. 1. Dur-O-Wal, Inc. "DA 1005". 2. Heckmann Building Products, Inc. “No. 330". 3. Hohmann & Barnard, Inc. “#341". 4. Masonry Reinforcing Corporation of America, Wire Bond, “3600". K. Weep Cell Vents: Flexible ultra-violet resistant polypropylene copolymer vent, 2-1/2 inch high x 3-3/8 inch long x 3/8-inch thick. Color selected by Architect. 1. Dur-O-Wal, Inc. “DA 1006". 2. Hohmann & Barnard, Inc. “”QV-Quadro-Vent”. 3. Masonry Reinforcing Corporation of America “3601". L. Setting Bed: ASTM C270, Type "S" portland cement mortar, specified in Section 04 05 00. Sandy Springs Gateway Concrete Unit Masonry 212087.02 - © Copyright 2013 Smallwood, Reynolds, Stewart, Stewart & Associates, Inc. 04 22 01.3 Re-submit For Permit M. Wire Mesh Hardware Cloth: 1/2-inch x 16 gauge galvanized steel mesh, 1U-4" long; 2-inches less than wall width. N. Masonry Cleaning Compound: As recommended by, and tested by, masonry unit manufacturer. PART 3 - EXECUTION 3.01 PREPARATION A. Ensure items built-in by other trades for this work are properly located and sized. B. Establish all lines, levels and coursing. Protect from disturbance. C. Provide temporary bracing during erection of masonry work. Maintain in place until building structure provides permanent bracing. 3.02 ERECTION A. Lay masonry units plumb, level and true to line with accurate coursing. B. Fully bond external and internal corners and intersections. Stop off horizontal run by racking back in each course; toothing is not permitted. C. Do not shift or tap masonry units after mortar has taken initial set. Where adjustment must be made, remove mortar and replace. D. Perform cutting on Project site with proper power tools to provide straight and true, unchipped edges. E. Ensure masonry courses are of uniform height. Make vertical and horizontal joints equal and of uniform thickness. F. Lay concrete masonry units in full face bed shelling, except lay bottom course in full mortar bed. 1. Lay concrete block in stacked pattern at decorative concrete masonry units/ common /and running bond pattern for typical concrete masonry units. 2. Butter head joints before placing units. 3. Fill joints without slushing. 4. Remove excess mortar and projections. Take care to prevent breaking block corners. G. Lay masonry units dry. During prolonged hot and dry periods, units may be lightly dampened if approved by Architect. 1. Do not lay freshly wet masonry, or masonry bearing a film of ice or frost.
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