ࡱ> -/*+,_ =bjbjzyzy >6b6b4t$t$t$t$t$$$$8$%t$J0''(8'8'8'l()|)@vJxJxJxJxJxJxJ$'LNJt$K-l(l(K-K-Jt$t$8'8'4J;8;8;8K-t$8't$8'vJ;8K-vJ;8;8CpI8'PQ4&G$bJJ0JGPw6PHpIIJPt$I)*;8\++k)))JJY7)))JK-K-K-K-P)))))))))B :#: SECTION 04 22 00 CONCRETE UNIT MASONRY GENERAL RELATED DOCUMENTS Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. SUMMARY This Section includes unit masonry assemblies consisting of the following: EDIT LIST BELOW TO SUIT PROJECT. Concrete masonry units. Decorative concrete masonry units. Mortar and grout. Reinforcing steel. Masonry joint reinforcing. Ties and anchorage. Embedded flashing. Cavity-wall insulation. Miscellaneous masonry accessories. RETAIN PARAGRAPH BELOW IF ALLOWANCES ARE SPECIFIED FOR BRICK SELECTION OR FOR MASONRY TESTING. INCLUDE SEPARATE BRICK ALLOWANCES FOR SPECIAL SHAPES IF REQUIRED. DEFINITIONS CMU(s): Concrete masonry unit(s). Reinforced Masonry: Masonry containing reinforcing steel in grouted cells. PREINSTALLATION MEETINGS Preinstallation Conference: Conduct conference at Project site. PERFORMANCE REQUIREMENTS RETAIN THIS ARTICLE ONLY FOR ENGINEERED MASONRY AND WHERE REQUIRED BY CODE. DELETE FOR VENEER AND MASONRY DESIGNED BY THE EMPIRICAL METHOD. THIS ARTICLE MAY ALSO BE DELETED FOR ENGINEERED MASONRY IF COMPRESSIVE STRENGTH OF UNITS IS SPECIFIED. SEE EDITING INSTRUCTION NO.2 IN THE EVALUATIONS. Provide unit masonry that develops the following net-area compressive strengths (f'm) at 28 days. Determine compressive strength of masonry from net-area compressive strengths of masonry units and mortar types according to [Tables1 and 2 in ACI530.1/ASCE6/TMS602] [Table21-D of the Uniform Building Code]. SELECT PARAGRAPH ABOVE OR BELOW. IF RETAINING ABOVE, CORRELATE UNIT MASONRY AND MORTAR REQUIREMENTS IN PART2 WITH COMPRESSIVE STRENGTHS SELECTED. Provide unit masonry that develops the following net-area compressive strengths (f'm) at 28 days. Determine compressive strength of masonry by testing masonry prisms according to [ASTMC1314] [UBC Standard21-17]. RETAIN APPROPRIATE SUBPARAGRAPHS BELOW WITH EITHER PARAGRAPH ABOVE. RETAIN OR REVISE VALUES IN SUBPARAGRAPHS IF ONE VALUE IS APPLICABLE THROUGHOUT PROJECT. RETAIN "AS INDICATED" IF VALUES ARE SHOWN ON DRAWINGS. For Concrete Unit Masonry: [f'm = 1500 psi(10.3 MPa)] [f'm = 2000 psi(13.8 MPa)] [f'm = 2500 psi(17.2 MPa)] [As indicated]. For Brick Unit Masonry: [f'm = 2000 psi(13.8 MPa)] [f'm = 2500 psi(17.2 MPa)] [f'm = 3000 psi(20.7 MPa)] [As indicated]. For Structural-Clay Tile Unit Masonry: [f'm = 1500 psi(10.3 MPa)] [f'm = 2000 psi(13.8 MPa)] [f'm = 2500 psi(17.2 MPa)] [As indicated]. SUBMITTALS Product Data: For each different masonry unit, accessory, and other manufactured product specified. Shop Drawings: Show fabrication and installation details for the following: DELETE SUBPARAGRAPH BELOW IF GLAZED STRUCTURAL FACING TILE IS NOT USED OR IF CONSIDERED UNNECESSARY. DELETE SUBPARAGRAPH BELOW IF REINFORCING BARS ARE NOT USED. Reinforcing Steel: Detail bending and placement of unit masonry reinforcing bars. Comply with ACI315, "Details and Detailing of Concrete Reinforcement." [Show elevations of reinforced walls.] Fabricated Flashing: Detail corner units, end-dam units, and other special applications. DELETE SUBPARAGRAPH BELOW IF FLASHING MATERIAL SELECTED IS NOT SPECIALLY FABRICATED FOR CORNERS, END DAMS, ETC. Samples for Initial Selection: For the following: Unit masonry Samples in small-scale form showing the full range of colors and textures available for each different exposed masonry unit required. Colored mortar Samples showing the full range of colors available. DELETE PARAGRAPH AND SUBPARAGRAPHS ABOVE IF COLORS AND TEXTURES ARE PRESELECTED AND SPECIFIED OR SCHEDULED. RETAIN PARAGRAPH AND SUBPARAGRAPHS BELOW WITH OR WITHOUT ABOVE. Samples for Verification: For the following: REVISE OR EXPAND SUBPARAGRAPHS BELOW TO SUIT PROJECT. Full-size units for each different exposed masonry unit required, showing the full range of exposed colors, textures, and dimensions to be expected in the completed construction. DELETE SUBPARAGRAPH BELOW IF COLORED MORTAR IS NOT USED. Colored mortar Samples for each color required, showing the full range of colors expected in the finished construction. Make samples using the same sand and mortar ingredients to be used on Project. [Label Samples to indicate types and amounts of pigments used.] DELETE SUBPARAGRAPH BELOW IF STONE TRIM IS NOT USED. Weep holes/vents in color to match mortar color. Embedded flashings. Accessories embedded in the masonry. RETAIN PARAGRAPH AND SUBPARAGRAPH BELOW FOR CRITICAL WORK WHERE RECORD OF MOCKUP MATERIALS IS DESIRED. SEE EDITING INSTRUCTION NO.3 IN THE EVALUATIONS FOR INFORMATION ON MATERIAL TEST REPORTS. Material Test Reports: From a qualified testing agency indicating and interpreting test results of the following for compliance with requirements indicated: Each type of masonry unit required. RETAIN SUBPARAGRAPH BELOW ONLY IF UNIT-STRENGTH METHOD WAS RETAINED IN "PERFORMANCE REQUIREMENTS" ARTICLE ABOVE OR IF REQUIREMENTS FOR NET-AREA COMPRESSIVE STRENGTH OF UNITS ARE RETAINED IN PART2. Include test results, measurements, and calculations establishing net-area compressive strength of masonry units. DELETE SUBPARAGRAPH BELOW IF MORTAR IS SPECIFIED TO COMPLY WITH PROPORTION SPECIFICATION. Mortar complying with property requirements of [ASTMC270] [UBC Standard21-15]. Grout mixes complying with compressive strength requirements of [ASTMC476] [UBC Standard21-19]. Include description of type and proportions of grout ingredients. SEE EDITING INSTRUCTION NO.3 IN THE EVALUATIONS FOR INFORMATION ON MATERIAL CERTIFICATES. Material Certificates: Signed by manufacturers certifying that each of the following items complies with requirements: Each type of masonry unit required. RETAIN SUBPARAGRAPH BELOW ONLY IF UNIT-STRENGTH METHOD WAS RETAINED IN "PERFORMANCE REQUIREMENTS" ARTICLE ABOVE OR IF REQUIREMENTS FOR NET-AREA COMPRESSIVE STRENGTH OF UNITS ARE RETAINED IN PART2. Include test data, measurements, and calculations establishing net-area compressive strength of masonry units. Each cement product required for mortar and grout, including name of manufacturer, brand, type, and weight slips at time of delivery. RETAIN SUBPARAGRAPH BELOW ONLY IF UNIT-STRENGTH METHOD WAS RETAINED IN "PERFORMANCE REQUIREMENTS" ARTICLE ABOVE. Each combination of masonry unit type and mortar type. Include statement of net-area compressive strength of masonry units, mortar type, and net-area compressive strength of masonry determined according to [Tables1 and 2 in ACI530.1/ASCE6/TMS602] [Table21-D of the Uniform Building Code]. Each material and grade indicated for reinforcing bars. Each type and size of joint reinforcement. Each type and size of anchor, tie, and metal accessory. DELETE BELOW IF NOT REQUIRED. Cold-Weather Procedures: Detailed description of methods, materials, and equipment to be used to comply with cold-weather requirements. QUALITY ASSURANCE RETAIN PARAGRAPH BELOW TO ESTABLISH QUALIFICATIONS FOR TESTING AGENCIES EMPLOYED BY CONTRACTOR OR OWNER. Testing Agency Qualifications: An independent testing agency, acceptable to authorities having jurisdiction, qualified according to ASTMC1093 to conduct the testing indicated, as documented according to ASTME548. Source Limitations for Masonry Units: Obtain exposed masonry units of a uniform texture and color, or a uniform blend within the ranges accepted for these characteristics, through one source from a single manufacturer for each product required. Source Limitations for Mortar Materials: Obtain mortar ingredients of a uniform quality, including color for exposed masonry, from one manufacturer for each cementitious component and from one source or producer for each aggregate. Preconstruction Testing Service: Engage a qualified independent testing agency to perform the following preconstruction testing: SELECT PARAGRAPH ABOVE OR BELOW. Preconstruction Testing Service: Owner will engage a qualified independent testing agency to perform preconstruction testing indicated below. Payment for these services will be made [by Owner] [from the Inspection and Testing Allowance, as authorized by Change Orders]. Retesting of materials failing to meet specified requirements shall be done at Contractor's expense. RETAIN APPROPRIATE SUBPARAGRAPHS BELOW WITH EITHER PARAGRAPH ABOVE. Concrete Masonry Unit Test: For each concrete masonry unit indicated, per ASTMC140. USUALLY RETAIN TEST METHODS ABOVE. RETAIN SUBPARAGRAPH BELOW ONLY IF PRISM TEST WAS SPECIFIED IN "PERFORMANCE REQUIREMENTS" ARTICLE FOR DETERMINING COMPRESSIVE STRENGTH OF MASONRY. Prism Test: For each type of wall construction indicated, per [ASTMC1314] [UBC Standard21-17]. DELETE SUBPARAGRAPH BELOW IF MORTAR IS SPECIFIED TO COMPLY WITH PROPORTION SPECIFICATION. Mortar Test: For mortar properties per [ASTMC270] [UBC Standard21-16]. DELETE SUBPARAGRAPH BELOW IF GROUT IS SPECIFIED BY PROPORTIONS GIVEN IN ASTMC476 OR UBCSTANDARD21-19 RATHER THAN BY COMPRESSIVE STRENGTH. Grout Test: For compressive strength per [ASTMC1019] [UBC Standard21-18]. DELETE PARAGRAPH BELOW IF FIRE-RATED MASONRY IS NOT USED. Fire-Resistance Ratings: Where indicated, provide materials and construction identical to those of assemblies with fire-resistance ratings determined per ASTME119 by a testing and inspecting agency, by equivalent concrete masonry thickness, or by another means, as acceptable to authorities having jurisdiction. Sample Panels: Before installing unit masonry, build sample panels, using materials indicated for the completed Work, to verify selections made under sample Submittals and to demonstrate aesthetic effects. Build sample panels for each type of exposed unit masonry assembly in sizes approximately 48 inches (1200 mm) long by 48 inches (1200 mm) high by full thickness. Locate panels in the locations indicated or, if not indicated, as directed by Architect. Clean exposed faces of panels with masonry cleaner indicated. DELETE SUBPARAGRAPH BELOW IF NOT APPLICABLE. Where masonry is to match existing, erect panels adjacent and parallel to existing surface. Protect approved sample panels from the elements with weather-resistant membrane. Maintain sample panels during construction in an undisturbed condition as a standard for judging the completed Work. Approval of sample panels is for color, texture, and blending of masonry units; relationship of mortar and sealant colors to masonry unit colors; tooling of joints; aesthetic qualities of workmanship; and other material and construction qualities specifically approved by Architect in writing. Approval of sample panels does not constitute approval of deviations from the Contract Documents contained in sample panels, unless such deviations are specifically approved by Architect in writing. Demolish and remove sample panels when directed. DELIVERY, STORAGE, AND HANDLING Store masonry units on elevated platforms in a dry location. If units are not stored in an enclosed location, cover tops and sides of stacks with waterproof sheeting, securely tied. If units become wet, do not install until they are dry. DELETE SUBPARAGRAPH BELOW IF TYPEI CONCRETE MASONRY UNITS ARE NOT REQUIRED. Store cementitious materials on elevated platforms, under cover, and in a dry location. Do not use cementitious materials that have become damp. Store aggregates where grading and other required characteristics can be maintained and contamination avoided. DELETE TWO PARAGRAPHS ABOVE AND RETAIN PARAGRAPH BELOW IF PREBLENDED, DRY MORTAR MIX IS REQUIRED. Deliver preblended, dry mortar mix in moisture-resistant containers designed for lifting and emptying into dispensing silo. Store preblended, dry mortar mix in delivery containers on elevated platforms, under cover, and in a dry location or in a metal dispensing silo with weatherproof cover. Store masonry accessories, including metal items, to prevent corrosion and accumulation of dirt and oil. Protect cavity insulation materials from physical damage and from deterioration by sunlight, moisture, soiling, and other sources. Store in a dry location. Comply with insulation manufacturer's written instructions for handling, storing, and protecting during installation. PROJECT CONDITIONS Protection of Masonry: During construction, cover tops of walls, projections, and sills with waterproof sheeting at end of each day's work. Cover partially completed masonry when construction is not in progress. INCREASE EXTENT OF COVER IN SUBPARAGRAPH BELOW AS NEEDED TO SUIT LOCAL CLIMATIC CONDITIONS. Extend cover a minimum of 24 inches (600 mm) down both sides and hold cover securely in place. Where one wythe of multiwythe masonry walls is completed in advance of other wythes, secure cover a minimum of 24 inches (600 mm) down face next to unconstructed wythe and hold cover in place. Do not apply uniform floor or roof loads for at least 12 hours and concentrated loads for at least 3 days after building masonry walls or columns. Stain Prevention: Prevent grout, mortar, and soil from staining the face of masonry to be left exposed or painted. Immediately remove grout, mortar, and soil that come in contact with such masonry. Protect base of walls from rain-splashed mud and from mortar splatter by coverings spread on ground and over wall surface. Protect sills, ledges, and projections from mortar droppings. Protect surfaces of window and door frames, as well as similar products with painted and integral finishes, from mortar droppings. Turn scaffold boards near the wall on edge at the end of each day to prevent rain from splashing mortar and dirt onto completed masonry. Cold-Weather Requirements: Do not use frozen materials or materials mixed or coated with ice or frost. Do not build on frozen substrates. Remove and replace unit masonry damaged by frost or by freezing conditions. Comply with cold-weather construction requirements contained in [ACI530.1/ASCE6/TMS602] [Section2104.3 of the Uniform Building Code]. Cold-Weather Cleaning: Use liquid cleaning methods only when air temperature is 40 degF (4 degC) and above and will remain so until masonry has dried, but not less than 7 days after completing cleaning. Hot-Weather Requirements: Protect unit masonry work when temperature and humidity conditions produce excessive evaporation of water from mortar and grout. Provide artificial shade and wind breaks and use cooled materials as required. When ambient temperature exceeds 100 degF (38 degC), or 90 degF (32 degC) with a wind velocity greater than 8mph (13 km/h), do not spread mortar beds more than 48inches (1200 mm) ahead of masonry. Set masonry units within one minute of spreading mortar. PRODUCTS CONCRETE MASONRY UNITS General: Provide shapes indicated and as follows: SHOW DETAILS ON DRAWINGS OF SPECIAL CONDITIONS AND SPECIAL SHAPES NEEDED. REVISE SUBPARAGRAPH BELOW TO SUIT PROJECT. Provide special shapes for lintels, corners, jambs, sash, control joints, headers, bonding, and other special conditions. Provide bullnose units for outside corners, unless otherwise indicated. DELETE SUBPARAGRAPH ABOVE OR BELOW, OR BOTH. Provide square-edged units for outside corners, unless indicated as bullnose. Concrete Masonry Units: [ASTMC90] [UBC Standard21-4] and as follows: COORDINATE WITH STRUCTURAL ENGINEER IF NORMAL WEIGHT OR LIGHTWEIGHT MASONRY UNITS ARE REQUIRED. Unit Compressive Strength: Provide units with minimum average net-area compressive strength of [1900 psi(13.1 MPa)] [2150 psi(14.8 MPa)] [2800 psi(19.3 MPa)] [3050 psi(21.0 MPa)]. SELECT ONE OF THREE WEIGHTS BELOW OR DELETE SUBPARAGRAPH FOR CONTRACTOR'S OPTION. RETAIN ", UNLESS OTHERWISE INDICATED" FOR DEFAULT REQUIREMENT IF MORE THAN ONE WEIGHT IS USED. Weight Classification: [Lightweight] [Medium weight] [Normal weight] [, unless otherwise indicated]. Size (Width): Manufactured to the following dimensions: 4 inches (102 mm) nominal; 3-5/8 inches (92 mm) actual. 6 inches (152 mm) nominal; 5-5/8 inches (143 mm) actual. 8 inches (203 mm) nominal; 7-5/8 inches (194 mm) actual. 10 inches (254 mm) nominal; 9-5/8 inches (244 mm) actual. 12 inches (305 mm) nominal; 11-5/8 inches (295 mm) actual. Exposed Faces: Manufacturer's standard color and texture, unless otherwise indicated. DELETE SUBPARAGRAPH BELOW IF DIRECT APPLICATION OF PLASTER IS NOT USED. Where units are to receive a direct application of plaster, provide textured-face units made with gap-graded aggregates. RETAIN SUBPARAGRAPH BELOW, IF DESIRED, TO CONTROL APPEARANCE OF EXPOSED UNITS. ASTMC90 REQUIRES AT LEAST FOUR UNITS FOR SAMPLE, REPRESENTING THE RANGE OF COLOR AND TEXTURE PERMITTED. Where units are to be left exposed, provide color and texture matching the range represented by Architect's sample. SELECT SUBPARAGRAPH ABOVE OR BELOW. VERIFY LOCAL AVAILABILITY OF TYPE I UNITS BEFORE RETAINING. INSERT ASTMC129 OR UBC STANDARD21-5 FOR NON-LOAD-BEARING CONCRETE MASONRY UNITS, IF DESIRED; THEY ARE NOT USUALLY AN INVENTORY ITEM AND MAY HAVE TO BE ORDERED IN LARGE QUANTITIES. DRAWINGS WILL HAVE TO IDENTIFY LOAD-BEARING AND NON-LOAD-BEARING UNITS IF BOTH ARE SPECIFIED. Decorative Concrete Masonry Units: [ASTMC90] [UBC Standard21-4] and as follows: SEE EDITING INSTRUCTIONS NO.2 AND NO.4 IN THE EVALUATIONS BEFORE RETAINING UNIT COMPRESSIVE STRENGTHS AND WEIGHT CLASSIFICATIONS IN SUBPARAGRAPHS BELOW. DELETE SUBPARAGRAPH BELOW IF "PERFORMANCE REQUIREMENTS" ARTICLE WAS RETAINED. MINIMUM AVERAGE NET-AREA COMPRESSIVE STRENGTH PER ASTMC90 IS 1900 PSI (13.1 MPA). Unit Compressive Strength: Provide units with minimum average net-area compressive strength of [1900 psi (13.1 MPa)] [2150 psi (14.8 MPa)] [2800 psi (19.3 MPa)] [3050 psi (21.0 MPa)]. SELECT ONE OF THREE WEIGHTS BELOW OR DELETE SUBPARAGRAPH FOR CONTRACTOR'S OPTION. RETAIN ", UNLESS OTHERWISE INDICATED" FOR DEFAULT REQUIREMENT IF MORE THAN ONE WEIGHT IS USED. COORDINATE WEIGHT CLASSIFICATION WITH DESCRIPTION SELECTED FOLLOWING "FINISH" SUBPARAGRAPH BELOW. Weight Classification: [Lightweight] [Medium weight] [Normal weight] [, unless otherwise indicated]. Size: Manufactured to dimensions indicated for nondecorative units. Finish: Exposed faces of the following general description matching color, pattern, and texture of Architect's samples. SELECT DESCRIPTION BELOW THAT BEST FITS SAMPLE PROVIDED OR REVISE AS REQUIRED. COORDINATE WITH "WEIGHT CLASSIFICATION" SUBPARAGRAPH ABOVE. Normal-weight aggregate, ground finish. Lightweight aggregate, ground finish. Normal-weight aggregate, split-face finish. Normal-weight aggregate, split-ribbed finish. Lightweight aggregate, standard finish, scored vertically so units laid in running bond appear as square units laid in stacked bond. Lightweight aggregate, standard finish, triple scored vertically so units laid in running bond appear as vertical units laid in stacked bond (soldier courses). RETAIN SUBPARAGRAPH BELOW WITH ANY ABOVE IF SPECIAL AGGREGATE IS REQUIRED TO MATCH SAMPLE. Provide units made with aggregate matching aggregate in Architect's sample. RETAIN SUBPARAGRAPH BELOW FOR INCREASED WATER RESISTANCE OF UNITS IF REQUIRED. IF RETAINING, ALSO RETAIN WATER-REPELLENT MORTAR ADMIXTURE. Integral Water Repellent: Provide units made with liquid polymeric, integral water-repellent admixture that does not reduce flexural bond strength. Units made with integral water repellent, when tested as a wall assembly made with mortar containing integral water-repellent manufacturer's mortar additive according to ASTME514, with test period extended to 24 hours, show no visible water or leaks on the back of the test specimen. Products: Subject to compliance with requirements, provide one of the following: Dry-Block; W. R. Grace & Co., Construction Products Division. Rheopel; BASF Construction Chemicals. MORTAR AND GROUT MATERIALS COORDINATE REQUIREMENTS IN THIS ARTICLE WITH THOSE IN "MORTAR AND GROUT MIXES" ARTICLE. RETAIN ONE OR MORE OF FIRST FIVE PARAGRAPHS BELOW. DELETE MASONRY CEMENT IF NOT ALLOWED BY "MORTAR AND GROUT MIXES" ARTICLE BELOW. SEE EVALUATIONS FOR DISCUSSION OF MASONRY CEMENT AND MORTAR CEMENT. Portland Cement: ASTMC150, TypeI or II, except TypeIII may be used for cold-weather construction. Provide natural color or white cement as required to produce mortar color indicated. Hydrated Lime: [ASTMC207] [UBC Standard21-13], TypeS. MIX BELOW ALLOWS BETTER CONTROL OF COLOR THAN DOES JOB-MIXED, PORTLAND CEMENT-LIME MORTAR WITH PIGMENT ADDED. Portland Cement-Lime Mix: Packaged blend of portland cement complying with ASTMC150, TypeI or TypeIII, and hydrated lime complying with ASTMC207. Utilize factory preblended mortar and grout mixes from manufacturers capable of providing computer controlled products including batch information relating to the approximate weights of each individual raw material utilized in the mixtures. Use of field prepared mortar and grout mixes that incorporate damp loose aggregate is prohibited. Aggregate for Mortar: ASTMC144; except for joints less than 1/4 inch (6.5mm) thick, use aggregate graded with 100percent passing the No.16 (1.18-mm) sieve. RETAIN SUBPARAGRAPH BELOW FOR WHITE MORTAR. White-Mortar Aggregates: Natural white sand or ground white stone. RETAIN SUBPARAGRAPH BELOW FOR COLORED-AGGREGATE MORTAR. Colored-Mortar Aggregates: Natural-colored sand or ground marble, granite, or other sound stone; of color necessary to produce required mortar color. Aggregate for Grout: ASTMC404. RETAIN PARAGRAPH BELOW FOR COLORED CEMENT OR FOR PIGMENTS ADDED AT PROJECT SITE. Mortar Pigments: Natural and synthetic iron oxides and chromium oxides, compounded for use in mortar mixes. Use only pigments with a record of satisfactory performance in masonry mortar. RETAIN PARAGRAPH BELOW IF FIREBOX BRICK AND CLAY FLUE LININGS ARE USED. PARAGRAPH BELOW IS AN EXAMPLE REQUIREMENT FOR A CONCRETE ADMIXTURE OFTEN USED IN COLD WEATHER AS AN ANTIFREEZE. ASTMC270 APPENDIX AND BIA RECOMMEND AGAINST USING ANY ADMIXTURES. Cold-Weather Admixture: Nonchloride, noncorrosive, accelerating admixture complying with ASTMC494, TypeC, and recommended by the manufacturer for use in masonry mortar of composition indicated. RETAIN PARAGRAPH BELOW IF INTEGRAL WATER REPELLENT IS USED IN CONCRETE MASONRY UNITS. Water-Repellent Admixture: Liquid water-repellent mortar admixture intended for use with concrete masonry units, containing integral water repellent by same manufacturer. Water: Potable. Products: Subject to compliance with requirements, provide one of the following: Colored Portland Cement-Lime Mix: Eaglebond; Blue Circle Cement. Color Mortar Blend; Glen-Gery Corporation. Centurion Colorbond PL; Lafarge Corporation. Lehigh Custom Color Portland/Lime; Lehigh Portland Cement Co. Riverton Portland Cement Lime Custom Color; Riverton Corporation (The). Mortar Pigments: True Tone Mortar Colors; Davis Colors. Centurion Pigments; Lafarge Corporation. Mortar Colors A, H & S Series; Solomon Colors, Inc. FIRM NAME CHANGED FROM SOLOMON GRIND-CHEM SERVICES, INC TO SOLOMON COLORS, INC. AND THE PRODUCT NAME FROM SGS MORTAR COLORS TO MORTAR COLORS A, H & S SERIES. Cold-Weather Admixture: Accelguard 80; Euclid Chemical Co. Morseled; W. R. Grace & Co., Construction Products Division. Trimix-NCA; BASF Water-Repellent Admixture: Grace Construction Products; Darapel. GRACE CONSTRUCTION PRODUCTS TOOK OVER ADDIMENT INCORPORATED (MORTAR TITE) VERIFY IF THIS IS THE EXACT REPLACEMENT. Grace Construction Products, a unit of W. R. Grace & Co., Dry-Block Mortar Admixture. Master Builders, Inc.; Color Cure Mortar Admix or Rheomix. REINFORCING STEEL RETAIN REQUIRED PRODUCTS BELOW. Uncoated Steel Reinforcing Bars: ASTMA615/A615M; ASTMA616/A 616M, including Supplement1; or ASTMA617/A617M, Grade60(Grade400). SELECT PARAGRAPH ABOVE OR BELOW OR BOTH; IF RETAINING BOTH, SHOW LOCATIONS OF EACH ON PLANS OR REVISE BELOW TO INDICATE WHERE EPOXY-COATED BARS ARE REQUIRED. REVISE BELOW TO SPECIFY GALVANIZED BARS COMPLYING WITH ASTMA767/A767M IF REQUIRED. REVISE EITHER OR BOTH PARAGRAPHS IF ANOTHER GRADE OF STEEL IS REQUIRED. Epoxy-Coated Reinforcing Steel: ASTMA615/A615M, Grade60(Grade400); epoxy coated to comply with ASTMA775/A775M. MASONRY JOINT REINFORCEMENT Masonry Joint Reinforcement, General: ASTMA951. MILL-GALVANIZED COATING IS NOT AS THICK AS HOT-DIP GALVANIZED COATING. ACCORDING TO STANDARDS REFERENCED IN PARAGRAPH ABOVE, MILL-GALVANIZED COATING MAY BE APPLIED TO WIRE BEFORE FABRICATING BUT HOT-DIP GALVANIZED COATING MUST BE APPLIED AFTER FABRICATING. Interior Walls: Hot-dip galvanized, carbon steel. Exterior Walls: [Hot-dip galvanized, carbon] [Stainless] steel. Wire Size for Side Rods: W1.7 or 0.148-inch (3.8-mm) diameter. SELECT ONE WIRE SIZE FROM OPTIONS IN SUBPARAGRAPH ABOVE AND BELOW. Wire Size for Cross Rods: W1.7 or 0.148-inch (3.8-mm) diameter. RETAIN FIRST SUBPARAGRAPH BELOW AND SELECT ONE WIRE SIZE IF ADJUSTABLE (TWO-PIECE) TYPE REINFORCEMENT IS REQUIRED. Wire Size for Veneer Ties: W1.7 or 0.148-inch (3.8-mm) diameter. Spacing of Cross Rods, Tabs, and Cross Ties: Not more than 16 inches (407 mm) o.c. Provide in lengths of not less than 10 feet (3 m),with prefabricated corner and tee units. Masonry Joint Reinforcement for Single-Wythe Masonry: One of the following manufactured units with single pair of side rods, and as follows: Ladder type with cross rods spaced not more than 16 inches(407 mm) o.c, Truss type. Masonry Joint Reinforcement for Multiwythe Masonry: SELECT ACCEPTABLE TYPES FROM THREE SUBPARAGRAPHS BELOW AND COORDINATE WITH REQUIREMENTS IN PART 3. MORE THAN ONE TYPE MAY BE NEEDED; PART3 "COMPOSITE MASONRY" AND "CAVITY WALLS" ARTICLES SPECIFY TYPES REQUIRED FOR VARIOUS APPLICATIONS. RETAIN OPTION IN SUBPARAGRAPH BELOW IN SEISMIC DESIGN CATEGORIESE AND F (UBC SEISMIC ZONES3 AND 4) AND IN OTHER LOCATIONS IF CONTINUOUS HORIZONTAL WIRE IS USED TO REINFORCE VENEER WYTHE. Adjustable (two-piece) type, truss design, with one side rod at each face shell of backing wythe and with separate pintle ties that extend into facing wythe. Pintle ties have two hooks that engage eyes in reinforcement and resist movement perpendicular to wall. Ties extend at least halfway through facing wythe but with at least 5/8-inch (16-mm) cover on outside face. Where wythes are of different materials, use adjustable ties with pintle-and-eye connections having a maximum adjustment of 1-1/4 inches (32 mm). Acceptable Manufacturers: Hohmann & Barnard, Inc. Dayton Superior Corporation, Dur-O-Wal Division, Dur-O-Eye. Heckman Building Products Inc. TIES AND ANCHORS, GENERAL General: Provide ties and anchors, specified in subsequent articles, made from materials that comply with this Article, unless otherwise indicated. RETAIN FROM PARAGRAPHS BELOW ONLY THOSE MATERIALS REFERENCED IN SUBSEQUENT ARTICLES. PARAGRAPH BELOW IS ALLOWED ONLY FOR ANCHORS AND TIES IN INTERIOR WALLS WHERE HUMIDITY IS LESS THAN 75 PERCENT. Mill Galvanized Carbon-Steel Wire: ASTMA82; with ASTMA641(ASTMA641M), Class1 coating. Hot-Dip Galvanized Carbon-Steel Wire: ASTMA82; with ASTMA153, ClassB-2 coating. DELETE TYPE304 IN PARAGRAPH BELOW IF HIGHER CORROSION RESISTANCE IS REQUIRED. Stainless-Steel Wire: ASTMA580/A580M, Type304 or 316. PARAGRAPH BELOW IS ALLOWED ONLY FOR ANCHORS AND TIES IN INTERIOR WALLS WHERE HUMIDITY IS LESS THAN 75 PERCENT. Galvanized Steel Sheet: ASTMA653/A653M, G60 (Z180), commercial-quality, steel sheet zinc coated by hot-dip process on continuous lines before fabrication. Steel Sheet, Galvanized after Fabrication: ASTMA366/A366M cold-rolled, carbon-steel sheet hot-dip galvanized after fabrication to comply with ASTMA153. DELETE TYPE304 IN PARAGRAPH BELOW IF HIGHER CORROSION RESISTANCE IS REQUIRED. Stainless-Steel Sheet: ASTMA666, Type304 or 316. RETAIN BELOW IF REQUIRED FOR RIGID ANCHORS. Steel Plates, Shapes, and Bars: ASTMA36/A36M. BENT WIRE TIES General: Rectangular units with closed ends and not less than 4 inches (100 mm) wide. Z-shaped ties with ends bent 90 degrees to provide hooks not less than 2 inches (50 mm) long may be used for masonry constructed from solid units or hollow units laid with cells horizontal. Where coursing between wythes does not align, use adjustable ties composed of 2 parts; 1 with pintles, the other with eyes; with maximum misalignment of 1-1/4 inches (32 mm). DELETE SUBPARAGRAPH ABOVE OR BELOW OR BOTH. RETAIN BELOW, IF DESIRED, FOR DIFFERENTIAL MOVEMENT CAPABILITY EVEN WHERE WYTHES ALIGN. Where wythes are of different materials, use adjustable ties composed of 2 parts; 1 with pintles, the other with eyes; with maximum misalignment of 1-1/4 inches (32 mm). Wire: Fabricate from 3/16-inch-(4.8-mm-) diameter, hot-dip galvanized steel wire. Mill galvanized wire ties may be used in interior walls where humidity does not exceed 75 percent. ADJUSTABLE ANCHORS FOR CONNECTING TO STEEL FRAME RETAIN THIS ARTICLE IF APPLICABLE TO PROJECT. INDICATE DETAILS ON DRAWINGS. General: Provide two-piece assemblies that allow vertical or horizontal adjustment but resist tension and compression forces perpendicular to plane of wall. Anchor Section: Crimped 1/4-inch-(6.4-mm-) diameter, hot-dip galvanized steel wire anchor section for welding to steel. Mill galvanized wire may be used at interior walls where humidity does not exceed 75 percent. Tie Section: Triangular-shaped wire tie, sized to extend within 1 inch (25 mm) of masonry face, made from 0.1875-inch-(4.8-mm-) diameter, hot-dip galvanized steel wire. Mill galvanized wire may be used at interior walls where humidity does not exceed 75 percent. Partition Top anchors: 0.097-inch- (2.5-mm-) thick metal plate with 3/8-inch- (10-mm-) diameter metal rod 6 inches (150 mm) long welded to plate and with closed-end plastic tube fitted over rod that allows rod to move in and out of tube. Fabricate from steel, hot-dip galvanized after fabrication. ANCHORS FOR CONNECTING TO CONCRETE IF RETAINING THIS ARTICLE, COORDINATE WITH CONCRETE SECTION FOR PROVISION OF DOVETAIL SLOTS. General: Provide two-piece assemblies that allow vertical or horizontal adjustment but resist tension and compression forces perpendicular to plane of wall. Anchor Section: Dovetail anchor section formed from 0.0966-inch-(2.5-mm-) thick, steel sheet, galvanized after fabrication. Tie Section: Triangular-shaped wire tie, sized to extend within 1 inch (25 mm) of masonry face, made from 0.1875-inch-(4.8-mm-) diameter, hot-dip galvanized steel wire. RIGID ANCHORS General: Fabricate from steel bars as follows: 1-1/2 inches (38 mm) wide by 1/4 inch (6.4 mm) thick by 24 inches (600 mm) long, with ends turned up 2 inches (50 mm) or with cross pins. DELETE SUBPARAGRAPH ABOVE OR BELOW, OR REVISE TO SUIT PROJECT. As indicated. Finish: Hot-dip galvanized to comply with ASTMA153. ADJUSTABLE MASONRY-VENEER ANCHORS General: Provide two-piece assemblies that allow vertical or horizontal adjustment but resist tension and compression forces perpendicular to plane of wall, for attachment over sheathing to wood or metal studs, and as follows: Structural Performance Characteristics: Capable of withstanding a 100-lbf (445-N) load in both tension and compression without deforming or developing play in excess of 0.05 inch (1.3 mm). Materials: Provide masonry-veneer anchors of the following materials and thicknesses, unless otherwise indicated: Hot-Dip Galvanized, Carbon-Steel Wire: ASTMA82; with ASTMA153/A153M, ClassB-2 coating. RETAIN 1 OF 2 BELOW WITH EITHER SUBPARAGRAPH ABOVE. IF RETAINING SECOND CHOICE, CHECK FOR ADEQUATE JOINT THICKNESS. Wire Diameter: 0.1875 inch (4.8 mm). Steel Sheet, Galvanized after Fabrication: ASTMA1008/A1008M, Commercial Steel, hot-dip galvanized after fabrication to comply with ASTMA153/A153M. Thickness: 0.0781 inch (2.0 mm) (14 gage minimum). Screw-Attached, Masonry-Veneer Anchors: Units consisting of a wire-tie section and a metal-anchor section complying with the following requirements: Wire-Tie Shape: Triangular. Wire-Tie Length: As required to extend to within 1-1/2 inches (38 mm) of face of stone masonry veneer. Anchor Section: Sheet metal plate with screw holes top and bottom and with raised, rib-stiffened strap stamped into center to provide a slot between strap and plate for connecting wire tie; of overall size indicated below: Plate and Strap Size: 1-1/4 inches (32 mm) wide for plate and 5/8 inch (16 mm) wide for strap, by lengths indicated below; slot clearance formed between face of plate and back of strap at maximum rib projection: 1/32 inch (0.8 mm) plus diameter of wire tie. Plate and Strap Lengths: 6 inches (150 mm) and 3-5/8 inches (92 mm). Acceptable Manufacturers: Hohmann & Barnard, Inc. Dayton Superior Corporation, Dur-O-Wal Division. Heckman Building Products Inc. Wire-Bond. Stainless-Steel Drill Screws for Steel Studs: Proprietary fastener consisting of carbon-steel drill point and 300Series stainless-steel shank, complying with ASTMC954 except manufactured with hex washer head and neoprene washer, No.10 (4.8-mm) diameter by length required to penetrate steel stud flange by not less than three exposed threads. MISCELLANEOUS ANCHORS Unit Type Inserts in Concrete: Cast-iron or malleable-iron inserts of type and size indicated. USUALLY DELETE PARAGRAPH ABOVE AND BELOW AND INCLUDE IN THE CONCRETE SECTION IF REQUIRED. HECKMAN'S "WEDGE INSERT 425" IS AN EXAMPLE OF INSERTS ABOVE. Dovetail Slots: Furnish dovetail slots with filler strips, of slot size indicated, fabricated from 0.0336-inch (0.85-mm), galvanized steel sheet. REVISE PARAGRAPH BELOW IF ASTMA325 (ASTMA325M) BOLTS ARE REQUIRED. Anchor Bolts: Steel bolts complying with ASTMA307, GradeA(ASTMF568, Property Class4.6); with ASTMA563(ASTMA563M) hex nuts and, where indicated, flat washers; hot-dip galvanized to comply with ASTMA153, ClassC; of diameter and length indicated and in the following configurations: RETAIN CONFIGURATIONS REQUIRED FROM SUBPARAGRAPHS BELOW OR REVISE TO SUIT PROJECT. INDICATE DIAMETER, LENGTH, AND CONFIGURATION ON DRAWINGS. Headed bolts. Nonheaded bolts, bent in manner indicated. USUALLY DELETE PARAGRAPH BELOW AND INCLUDE IN SECTIONS COVERING ITEMS ANCHORED. Postinstalled Anchors: Anchors as described below, with capability to sustain, without failure, load imposed within factors of safety indicated, as determined by testing per ASTME488, conducted by a qualified independent testing agency. SELECT ACCEPTABLE TYPES BELOW. VERIFY WITH PROJECT'S STRUCTURAL ENGINEER. Type: Expansion anchors. Type: Undercut anchors. SUBPARAGRAPHS ABOVE AND BELOW ARE EXAMPLES ONLY. ABOVE PROTECTS AGAINST CORROSION FROM AN INDOOR ATMOSPHERE; REVISE TO SUIT OTHER SERVICE CONDITIONS AFTER VERIFYING AVAILABILITY OF THICKER COATINGS. Corrosion Protection: Stainless-steel components complying with ASTMF593 and ASTMF594, Alloy Group1 or 2 (ASTMF738M and ASTMF836M, Alloy Group1 or 4) for bolts and nuts; ASTMA666 or ASTMA276, Type304 or 316, for anchors. SUBPARAGRAPHS BELOW ARE EXAMPLES ONLY; VERIFY SAFETY FACTORS TO SUIT ANCHORAGE CONDITIONS AND TYPES OF ANCHORS INDICATED. OVERHEAD, VIBRATORY, AND OTHER CRITICAL LOADS GENERALLY REQUIRE HIGHER SAFETY FACTORS. For Postinstalled Anchors in Concrete: Capability to sustain, without failure, a load equal to four times the loads imposed. For Postinstalled Anchors in Grouted Masonry Units: Capability to sustain, without failure, a load equal to six times the loads imposed. INSERT OTHER KINDS OF ANCHORS AS REQUIRED. EMBEDDED FLASHING MATERIALS SEE DISCUSSION OF FLASHING MATERIALS IN EVALUATIONS BEFORE EDITING THIS ARTICLE. Metal Flashing: Provide metal flashing,where flashing is exposed or partly exposed and where indicated, complying with SMACNA's "Architectural Sheet Metal Manual Division07 Section "Sheet Metal Flashing and Trim" and as follows: Stainless Steel: ASTMA240/A240M, Type304, 0.016 inch (0.4 mm) thick. Copper: ASTMB370, TemperH00 or H01, cold-rolled copper sheet, 10-oz./sq. ft. (3-kg/sq. m) weight or 0.0135 inch (0.34 mm) thick for fully concealed flashing; 16-oz./sq. ft. (5-kg/sq. m) weight or 0.0216 inch (0.55 mm) thick elsewhere. Fabricate continuous flashings in sections 96 inches (2400 mm) long minimum, but not exceeding 12 feet (3.6 m). Provide splice plates at joints of formed, smooth metal flashing. Fabricate through-wall metal flashing embedded in masonry from [stainless steel] [copper], with ribs at 3-inch (75-mm) intervals along length of flashing to provide an integral mortar bond. DELETE SUBPARAGRAPH BELOW IF REFERENCING DIVISION07 SECTION "SHEET METAL FLASHING AND TRIM" OR IF NOT REQUIRED. Fabricate through-wall flashing with snaplock receiver on exterior face where indicated to receive counterflashing. USUALLY RETAIN ONE OR BOTH SUBPARAGRAPHS BELOW IF METAL THROUGH-WALL FLASHING IS USED. SEE EVALUATIONS. Fabricate through-wall flashing with drip edge,unless otherwise indicated. Fabricate by extending flashing 1/2 inch (13 mm) out from wall, with outer edge bent down 30 degreesand hemmed. Fabricate through-wall flashing with sealant stop where indicated. Fabricate by bending metal back on itself 3/4 inch (19 mm) at exterior face of wall and down into joint 3/8 inch (10 mm) to form a stop for retaining sealant backer rod. RETAIN SUBPARAGRAPH BELOW IF EITHER OF TWO SUBPARAGRAPHS ABOVE ARE USED WITH RIBBED METAL FLASHING. Fabricate metal [drip edges] [and] [sealant stops] for ribbed metal flashing from plain metal flashing of same metal as ribbed flashing and extending at least 3 inches (75 mm) into wall with hemmed inner edge to receive ribbed flashing and form a hooked seam. Form hem on upper surface of metal so that completed seam will shed water. RETAIN ONE OR BOTH SUBPARAGRAPHS BELOW FOR USE WITH FLEXIBLE FLASHING IF REQUIRED. SEE EVALUATIONS. Metal Drip Edges: Fabricate from stainless steel. Extend at least 3 inches (75 mm) into wall and 1/2 inch (13 mm) out from wall, with outer edge bent down 30 degreesand hemmed. Metal Flashing Terminations: Fabricate from stainless steel. Extend at least 3 inches (75 mm) into wall and out to exterior face of wall. At exterior face of wall, bend metal back on itself for 3/4 inch (19 mm) and down into joint 3/8 inch (10 mm) to form a stop for retaining sealant backer rod. DELETE SUBPARAGRAPH BELOW IF METAL STRIPS ARE NOT USED AT EXPANSION JOINTS. Metal Expansion-Joint Strips: Fabricate from stainless steel to shapes indicated. Flexible Flashing/Drainage System: For flashing not exposed to the exterior, use the following, unless otherwise indicated: SUBPARAGRAPH BELOW IS AN EXAMPLE ONLY; REVISE IF OTHER LAMINATED PRODUCTS ARE REQUIRED. Copper-Laminated Flashing: 3-oz./sq. ft. (0.88-kg/sq. m) copper sheet bonded with rubber-based adhesive between 1 layer of 10 x 20 glass-fiber cloth weighing not less than 0.3 oz./sq. ft., and one layer of non-woven wicking fabric mesh laminated to the copper sheet for cavity wall water/moisture drainage. Use only where flashing is fully concealed in masonry. COORDINATE FIRST SUBPARAGRAPH AND LIST BELOW WITH PART2 "MANUFACTURERS" ARTICLE. RETAIN "AVAILABLE" FOR NONPROPRIETARY AND DELETE FOR SEMIPROPRIETARY SPECIFICATIONS. Basis of Design Product: York Flash-Vent as manufactured by York Manufacturing, Inc. Substitutions: None accepted. Size: Manufacturer's standard 12", 18", 24", or 36" wide rolls. Back-up tape: 3" wide butyl tape with release paper. Mastic/sealant: Manufacturer's standard for specified flashing. Outside Corner and Splice Material: York Multi-Flash. Termination Bar: Manufacturer's standard 1" wide, minimum by 1/8" thickness minimum by continuous length pre-punched stainless steel or composite material bar complete with stainless steel fasteners. SEE DISCUSSION OF FLASHING MATERIALS IN EVALUATIONS BEFORE EDITING THIS ARTICLE. Rubberized-Asphalt Flashing: Composite flashing product consisting of a pliable, adhesive rubberized-asphalt compound, bonded to a high-density, cross-laminated polyethylene film to produce an overall thickness of not less than 0.040 inch (1.0 mm). Acceptable products and manufacturers: Perm-A-Barrier Wall Flashing, Grace Construction Products. York Seal, York Manufacturing, Inc. Polyguard 400, Polyguard Products, Inc. Substitutions: Under provisions of Section 01 25 00. Adhesives, Primers, and Seam Tapes for Flashings: Flashing manufacturer's standard products or products recommended by the flashing manufacturer for bonding flashing sheets to each other and to substrates. Termination Bar: 1" wide, minimum by 1/8" thickness minimum by continuous length, pre-punched stainless steel or composite material bar complete with stainless steel fasteners. MISCELLANEOUS MASONRY ACCESSORIES REVISE TWO PARAGRAPHS BELOW IF A SPECIFIC PRODUCT IS REQUIRED. Compressible Filler: Premolded filler strips complying with ASTMD 1056, Grade2A1; compressible up to 35 percent; of width and thickness indicated; formulated from [neoprene] [or] [urethane]. Preformed Control-Joint Gaskets: Material as indicated below, designed to fit standard sash block and to maintain lateral stability in masonry wall; size and configuration as indicated. Styrene-Butadiene-Rubber Compound: ASTMD2000, Designation M2AA-805. DELETE SUBPARAGRAPH ABOVE OR BELOW. PVC: ASTMD2287, TypePVC-65406. Bond-Breaker Strips: Asphalt-saturated, organic roofing felt complying with ASTMD226, TypeI (No.15 asphalt felt). RETAIN ONE OR MORE OF FIRST SIX PARAGRAPHS BELOW, OR DELETE ALL IF OPEN-HEAD JOINTS ARE USED FOR WEEP HOLES AND VENTS. Mesh Weep/Vent: Free-draining mesh; made from polyethylene strands, full height and width of head joint and depth 1/8 inch (3 mm) less than depth of outer wythe; in color selected by Architect from manufacturer's complete line. MORTAR WILL CORRODE PRODUCT BELOW UNLESS PROTECTED WITH PAINT. PRODUCT BELOW CAN BE USED AT WEEP HOLES TO KEEP THEM CLEAR OR USED THROUGHOUT CAVITY TO KEEP IT FREE DRAINING. IF USED THROUGHOUT CAVITY, DELETE LAST PHRASE. Cavity Drainage Material: 1-inch-(25-mm-) thick, free-draining mesh; made from polyethylene strands and shaped to avoid being clogged by mortar droppings. Products: Subject to compliance with requirements, provide one of the following: Mortar Break; Advanced Building Products, Inc. CavClear Masonry Mat; CavClear. Mortar Net; Mortar Net USA, Ltd. Reinforcing Bar Positioners: Wire units designed to fit into mortar bed joints spanning masonry unit cells with loops for holding reinforcing bars in center of cells. Units are formed from 0.142-inch (3.6-mm) steel wire, hot-dip galvanized after fabrication. Provide units with either two loops or four loops as needed for number of bars indicated. Products: Subject to compliance with requirements, provide one of the following: Dayton Superior Corporation, Dur-O-Wal Division; D/A810, D/A812 or D/A817. Heckmann Building Products Inc.; No.376 Rebar Positioner. Hohmann & Barnard, Inc.; #RB or #RB-Twin Rebar Positioner. Wire-Bond; O-Ring or Double O-Ring Rebar Positioner. CAVITY-WALL INSULATION Acceptable Manufacturers: Subject to compliance with requirements, provide cavity wall insulation by one of the following: DiversiFoam Products. Dow Chemical Company. Owens Corning. Pactive Building Products. Extruded-Polystyrene Board Insulation: ASTMC578, TypeIV, with an aged thermal resistance (R-value) for 1-inch (25-mm) thickness of 5.0 degF x h x sq. ft./Btu at 75 degF at 5 years; closed-cell product, extruded with an integral skin, and complying with the following: Compressive Strength: Minimum 25 p.s.i., per ASTM D 1621. Water Absorption: Maximum 0.1 percent, per ASTM C 272. Density: Minimum 1.6 lbs./cu. Ft., per ASTM C 303. Basis of Design Product: Styrofoam CavityMate Plus as manufactured by Dow Chemical Company. Adhesive: Type recommended by insulation board manufacturer for application indicated, and certified or approved by manufacturer as being compatible with specified cavity wall dampproofing product. MASONRY CLEANERS Masonry Cleaner: As recommended by masonry unit manufacturer. MASONRY CLEANERS TETRASODIUM POLYPHOSPHATE IS THE CLEANING AGENT IN "SPIC AND SPAN," REPLACING THE PREVIOUS CLEANING AGENT TRISODIUM PHOSPHATE. THE NEW AGENT IS LESS DAMAGING TO THE ENVIRONMENT. Masonry Cleaner: As recommended by masonry unit manufacturer. VERIFY ACCEPTABILITY OF PARAGRAPH BELOW FOR CLEANING MASONRY WITH PIGMENTED MORTAR JOINTS AND FOR KINDS OF MASONRY UNITS SPECIFIED. Proprietary Acidic Cleaner: Manufacturer's standard-strength cleaner designed for removing mortar/grout stains, efflorescence, and other new construction stains from new masonry without discoloring or damaging masonry surfaces. Use product expressly approved for intended use by cleaner manufacturer and manufacturer of masonry units being cleaned. Products: Subject to compliance with requirements, provide one of the following: Cleaners for Red and Light-Colored Brick Not Subject to Metallic Staining with Mortar Not Subject to Bleaching: 202 New Masonry Detergent; Diedrich Technologies, Inc. Sure Klean No.600 Detergent; ProSoCo, Inc. Cleaners for Red and Dark-Colored Brick Not Subject to Metallic Staining: 200 Lime Solv; Diedrich Technologies, Inc. Sure Klean No.101 Lime Solvent; ProSoCo., Inc. Cleaners for Brick Subject to Metallic Staining: 202V Vana-Stop; Diedrich Technologies, Inc. Sure Klean Vana Trol; ProSoCo, Inc. MORTAR AND GROUT MIXES General: Do not use admixtures, including pigments, air-entraining agents, accelerators, retarders, water-repellent agents, antifreeze compounds, or other admixtures, unless otherwise indicated. Do not use calcium chloride in mortar or grout. DELETE SUBPARAGRAPH BELOW IF COLD-WEATHER ADMIXTURE IS NOT RETAINED. Add cold-weather admixture (if used) at the same rate for all mortar, regardless of weather conditions, to ensure that mortar color is consistent. RETAIN PARAGRAPH BELOW IF PREBLENDED MIX IS REQUIRED. Preblended, Dry Mortar Mix: Furnish dry mortar ingredients in the form of a preblended mix. Measure quantities by weight to ensure accurate proportions, and thoroughly blend ingredients before delivering to Project site. RETAIN AND EDIT ONE OF TWO PARAGRAPHS BELOW. SEE EVALUATIONS. Mortar for Unit Masonry: Comply with [ASTMC270] [UBC Standard21-15], Proportion Specification. RETAIN SUBPARAGRAPH BELOW TO ALLOW USE OF EXTENDED-LIFE (READY-MIXED) MORTAR IF ACCEPTABLE AND AVAILABLE IN PROJECT LOCATION. USUALLY SELECT PROPERTY SPECIFICATION ABOVE IF RETAINING BELOW. Extended-Life Mortar for Unit Masonry: Mortar complying with ASTMC 1142 may be used instead of mortar specified above, at Contractor's option. Limit cementitious materials in mortar to portland cement and lime. SELECT SUBPARAGRAPH ABOVE OR BELOW, OR DELETE BOTH IF MASONRY CEMENT IS ACCEPTABLE. RETAIN BELOW IF MASONRY CEMENT IS ACCEPTABLE FOR UNREINFORCED INTERIOR MASONRY. Limit cementitious materials in mortar for exterior [and reinforced] masonry to portland cement and lime. FOR EACH MASONRY CONDITION BELOW APPLICABLE TO PROJECT, RETAIN ONE MORTAR TYPE OR REVISE TO SUIT PROJECT. SEE EDITING INSTRUCTION NO.8 IN THE EVALUATIONS BEFORE MAKING SELECTIONS. For masonry below grade, in contact with earth, and where indicated, use Type[M] [M or RM] [S] [S or RS]. DELETE SUBPARAGRAPH BELOW IF NO MASONRY IS GROUTED AND REINFORCED WITH STEEL REINFORCING BARS. For reinforced masonry and where indicated, use Type[S] [S or RS] [N] [N or RN]. For exterior, above-grade, load-bearing and non-load-bearing walls and parapet walls; for interior load-bearing walls; for interior non-load-bearing partitions; and for other applications where another type is not indicated, use Type[N] [N or RN]. DELETE SUBPARAGRAPH BELOW IF NOT ALLOWED. For interior non-load-bearing partitions, TypeO may be used instead of TypeN. DELETE PARAGRAPH AND SUBPARAGRAPHS BELOW IF COLORED CEMENT WAS REQUIRED IN "MORTAR AND GROUT MATERIALS" ARTICLE ABOVE. Pigmented Mortar: Select and proportion pigments with other ingredients to produce color required. Limit pigments to the following percentages of cement content by weight: For mineral-oxide pigments and portland cement-lime mortar, not more than 10 percent. DELETE SUBPARAGRAPH BELOW IF MORTAR PIGMENTS ARE LIMITED TO MINERAL OXIDES. For carbon-black pigment and portland cement-lime mortar, not more than 2 percent. DELETE TWO SUBPARAGRAPHS BELOW IF MASONRY CEMENT AND MORTAR CEMENT ARE NOT USED. For mineral-oxide pigments and mortar, not more than 5 percent. For carbon-black pigment and mortar, not more than 1 percent. Colored-Aggregate Mortar: Produce required mortar color by using colored aggregates combined with selected cementitious materials. RETAIN SUBPARAGRAPH BELOW WITH EITHER OF TWO PARAGRAPHS ABOVE. INSERT MATERIALS AND PROPORTIONS USED FOR SAMPLE, IF KNOWN. Mix to match Architect's sample. Grout for Unit Masonry: Comply with ASTMC476. Use grout of type indicated or, if not otherwise indicated, of type (fine or coarse) that will comply with [Table5 of ACI530.1/ASCE6/TMS602] [UBCTable21-C] for dimensions of grout spaces and pour height. Provide grout with a slump of 8 to 11 inches (200 to 280 mm) as measured according to ASTMC143. SOURCE QUALITY CONTROL RETAIN THIS ARTICLE ONLY IF MASONRY IS DESIGNED ACCORDING TO ACI 530/ASCE5/TMS402 AND UNIT-STRENGTH METHOD IS USED. SEE EDITING INSTRUCTION NO.11 IN THE EVALUATIONS. Owner [will] [reserves the right to] engage a qualified independent testing agency to perform source quality-control testing indicated below: Payment for these services will be made by Owner. Retesting of materials failing to meet specified requirements shall be done at Contractor's expense. Brick Tests: For each type and grade of brick indicated, units will be tested according to ASTMC67. Concrete Masonry Unit Tests: For each type of concrete masonry unit indicated, units will be tested according to ASTMC140. EXECUTION EXAMINATION Examine conditions, with Installer present, for compliance with requirements for installation tolerances and other conditions affecting performance. DELETE SUBPARAGRAPH BELOW IF NOT REQUIRED. For the record, prepare written report, endorsed by Installer, listing conditions detrimental to performance. Verify that foundations are within tolerances specified. DELETE SUBPARAGRAPH BELOW IF NOT APPLICABLE. Verify that reinforcing dowels are properly placed. Proceed with installation only after unsatisfactory conditions have been corrected. Before installation, examine rough-in and built-in construction to verify actual locations of piping connections. INSTALLATION, GENERAL Thickness: Build cavity and composite walls and other masonry construction to the full thickness shown. Build single-wythe walls to the actual widths of masonry units, using units of widths indicated. Build chases and recesses to accommodate items specified in this Section and in other Sections of the Specifications. Leave openings for equipment to be installed before completing masonry. After installing equipment, complete masonry to match the construction immediately adjacent to the opening. Cut masonry units with motor-driven saws to provide clean, sharp, unchipped edges. Cut units as required to provide a continuous pattern and to fit adjoining construction. Where possible, use full-size units without cutting. Allow units cut with water-cooled saws to dry before placing, unless wetting of units is specified. Install cut units with cut surfaces and, where possible, cut edges concealed. Select and arrange units for exposed unit masonry to produce a uniform blend of colors and textures. SUBPARAGRAPH BELOW IS "MEANS AND METHODS" BUT DOES HELP ENSURE UNIFORMITY OF BLEND. Mix units from several pallets or cubes as they are placed. DELETE PARAGRAPH BELOW IF NOT APPLICABLE. Matching Existing Masonry: Match coursing, bonding, color, and texture of existing masonry. RETAIN BELOW FOR HIGH-SUCTION BRICK. A SIMPLE TEST TO DETERMINE IF WETTING IS REQUIRED CONSISTS OF DRAWING A CIRCLE THE SIZE OF A QUARTER ON A BRICK AND PLACING 20 DROPS OF WATER IN THE CIRCLE; IF WATER IS ABSORBED WITHIN 1-1/2 MINUTES, THE BRICK REQUIRES WETTING. CONSTRUCTION TOLERANCES Comply with tolerances in ACI530.1/ASCE6/TMS602 and the following: For conspicuous vertical lines, such as external corners, door jambs, reveals, and expansion and control joints, do not vary from plumb by more than 1/4 inch in 20 feet(6 mm in 6 m), nor 1/2 inch (12 mm) maximum. For vertical alignment of exposed head joints, do not vary from plumb by more than 1/4 inch in 10 feet(6 mm in 3 m), nor 1/2 inch (12 mm) maximum. For conspicuous horizontal lines, such as exposed lintels, sills, parapets, and reveals, do not vary from level by more than 1/4 inch in 20 feet (6 mm in 6 m), nor 1/2 inch (12 mm) maximum. IF TYPEFBS ROUGH OR TYPEFBA BRICK IS USED, REVISE TOLERANCES BELOW TO ALLOW FOR VARIATION IN BRICK SIZE. CONSIDER RESTRICTING TOLERANCES IF TYPEFBX BRICK IS USED. For exposed bed joints, do not vary from thickness indicated by more than plus or minus 1/8 inch (3 mm), with a maximum thickness limited to 1/2 inch (12 mm). Do not vary from bed-joint thickness of adjacent courses by more than 1/8 inch (3 mm). For exposed head joints, do not vary from thickness indicated by more than plus or minus 1/8 inch (3 mm). Do not vary from adjacent bed-joint and head-joint thicknesses by more than 1/8 inch (3 mm). LAYING MASONRY WALLS Lay out walls in advance for accurate spacing of surface bond patterns with uniform joint thicknesses and for accurate location of openings, movement-type joints, returns, and offsets. Avoid using less-than-half-size units, particularly at corners, jambs, and, where possible, at other locations. Bond Pattern for Exposed Masonry: Lay exposed masonry in the following bond pattern; do not use units with less than nominal 4-inch (100-mm) horizontal face dimensions at corners or jambs. PATTERN IS USUALLY RUNNING BOND. IF OTHER BOND PATTERNS ARE REQUIRED, THEY MUST BE SPECIFIED BELOW OR INDICATED ON DRAWINGS. One-half running bond with vertical joint in each course centered on units in courses above and below. Stack bond. As indicated on Drawings. Lay concealed masonry with all units in a wythe in running bond or bonded by lapping not less than 2 inches (50 mm). Bond and interlock each course of each wythe at corners. Do not use units with less than nominal 4-inch (100-mm) horizontal face dimensions at corners or jambs. Stopping and Resuming Work: In each course, rack back one-half-unit length for one-half running bond or one-third-unit length for one-third running bond; do not tooth. Clean exposed surfaces of set masonry, wet clay masonry units lightly if required, and remove loose masonry units and mortar before laying fresh masonry. Built-in Work: As construction progresses, build in items specified under this and other Sections of the Specifications. Fill in solidly with masonry around built-in items. REVISE PARAGRAPH BELOW IF FLEXIBLE PERIMETER JOINT OR THERMAL BREAK IS REQUIRED. Fill space between hollow-metal frames and masonry solidly with mortar, unless otherwise indicated. DELETE PARAGRAPH ABOVE AND BELOW IF NOT APPLICABLE. Where built-in items are to be embedded in cores of hollow masonry units, place a layer of metal lath in the joint below and rod mortar or grout into core. Fill cores in hollow concrete masonry units with grout 24 inches (600 mm) under bearing plates, beams, lintels, posts, and similar items, unless otherwise indicated. Build non-load-bearing interior partitions full height of story to underside of solid floor or roof structure above, unless otherwise indicated. SELECT ONE OR MORE OF THREE SUBPARAGRAPHS BELOW OR REVISE TO SUIT PROJECT. COORDINATE WITH FIRESTOPPING REQUIREMENTS. SELECT FIRST SUBPARAGRAPH IF LIVE-LOAD DEFLECTION OF STRUCTURE ABOVE WILL PRODUCE STRESS IN MASONRY. SEE EDITING INSTRUCTION NO.9 IN THE EVALUATIONS. Install compressible filler in joint between top of partition and underside of structure above. Wedge non-load-bearing partitions against structure above with small pieces of tile, slate, or metal. Fill joint with mortar after dead-load deflection of structure above approaches final position. At fire-rated partitions, install firestopping in joint between top of partition and underside of structure above to comply with Division07 Section "Penetration Firestopping." MORTAR BEDDING AND JOINTING DELETE PARAGRAPH AND SUBPARAGRAPHS BELOW IF NO HOLLOW CONCRETE MASONRY UNITS ARE REQUIRED. MORTAR BEDDING OF CROSS WEBS SHOULD BE ADDED IF REQUIRED. Lay hollow masonry units as follows: With full mortar coverage on horizontal and vertical face shells. Bed webs in mortar in starting course on footings and in all courses of piers, columns, and pilasters, and where adjacent to cells or cavities to be filled with grout. For starting course on footings where cells are not grouted, spread out full mortar bed, including areas under cells. Lay solid brick-size masonry units with completely filled bed and head joints; butter ends with sufficient mortar to fill head joints and shove into place. Do not deeply furrow bed joints or slush head joints. DELETE SUBPARAGRAPH BELOW IF NO CAVITY WALLS. At cavity walls, bevel beds away from cavity, to minimize mortar protrusions into cavity. As work progresses, trowel mortar fins protruding into cavity flat against the cavity face of the brick. IF ANOTHER JOINT PROFILE IS USED, REVISE PARAGRAPH BELOW OR SHOW ON DRAWINGS. Tool exposed joints slightly concave when thumbprint hard, using a jointer larger than the joint thickness, unless otherwise indicated. Cut joints flush for masonry walls to receive plaster or other direct-applied finishes (other than paint), unless otherwise indicated. RETAIN ALL TEXT IN PARAGRAPH BELOW IF FULL COLLAR JOINTS ARE REQUIRED FOR ALL WALLS AND PARTITIONS, OR EDIT FOR LIMITED REQUIREMENTS. RETAIN BELOW IF ALL WYTHES ARE NEEDED TO MEET HEIGHT-TO-THICKNESS RATIO OF CODES. BONDING OF MULTIWYTHE MASONRY RETAIN PARAGRAPH BELOW IF MAIN BONDING BETWEEN WYTHES IS BY INDIVIDUAL METAL TIES. REVISE SPACINGS AS REQUIRED BY AUTHORITIES HAVING JURISDICTION OR BY OFFICE PRACTICE. SPACINGS ARE FOR WIRE TIES 0.188 INCH 4.8 MM IN DIAMETER, WIRE TIES 0.148 INCH 3.8 MM IN DIAMETER, AND ADJUSTABLE TWO-PIECE TIES, RESPECTIVELY. Use individual metal ties installed in horizontal joints to bond wythes together. Provide ties as shown, but not less than one metal tie for [4.5 sq. ft.(0.42 sq. m)] [2.67sq.ft.(0.25 sq. m)] [1.77 sq. ft.(0.16 sq. m)] of wall area spaced not to exceed [36 inches(914 mm)] [24 inches(610)] [16 inches(406 mm)] o.c. horizontally and 16 inches (406 mm) o.c. vertically. Stagger ties in alternate courses. Provide additional ties within 12 inches (305 mm) of openings and space not more than 36 inches (915 mm) apart around perimeter of openings. At intersecting and abutting walls, provide ties at no more than 24 inches (610 mm) o.c. vertically. RETAIN PARAGRAPH BELOW IF MASONRY JOINT REINFORCEMENT IS MAIN BOND TIE. SEE EVALUATIONS. Use masonry joint reinforcement installed in horizontal mortar joints to bond wythes together. RETAIN PARAGRAPH BELOW AND TWO PARAGRAPHS ABOVE FOR CONTRACTOR'S OPTION. DELETE THREE PARAGRAPHS ABOVE AND RETAIN PARAGRAPH BELOW IF BONDING SYSTEM IS INDICATED ON DRAWINGS. Use bonding system indicated on Drawings. Corners: Provide interlocking masonry unit bond in each wythe and course at corners, unless otherwise indicated. DELETE SUBPARAGRAPH BELOW IF MASONRY JOINT REINFORCEMENT IS NOT USED. Provide continuity with masonry joint reinforcement at corners by using prefabricated "L" units as well as masonry bonding. Intersecting and Abutting Walls: Unless vertical expansion or control joints are shown at juncture, bond walls together as follows: SELECT ONE OF THREE SUBPARAGRAPHS BELOW AND EDIT TO SUIT PROJECT. IF MORE THAN ONE TYPE OF BONDING IS REQUIRED, MODIFY SUBPARAGRAPHS BELOW AND SHOW LOCATIONS ON DRAWINGS. Provide individual metal ties not more than [8 inches(203 mm)] [16 inches(406 mm)] o.c. Provide continuity with masonry joint reinforcement by using prefabricated "T" units. Provide rigid metal anchors not more than [24 inches(610 mm)] [48 inches(1220 mm)] o.c. If used with hollow masonry units, embed ends in mortar-filled cores. CAVITIES DELETE THIS ARTICLE IF CAVITY WALLS ARE NOT USED. STRIKING JOINTS ON CAVITY FACE MAY CAUSE MORTAR TO DROP INTO CAVITY. DELETE SECOND SENTENCE IN PARAGRAPH BELOW IF NOT REQUIRED. Keep cavities clean of mortar droppings and other materials during construction. Strike joints facing cavities flush. PROCEDURES IN SUBPARAGRAPHS BELOW HELP ELIMINATE CLOGGING OF WEEP HOLES. WOOD STRIPS USUALLY REST ON TIES AND HAVE WIRES ATTACHED FOR LIFTING. Use wood strips temporarily placed in cavity to collect mortar droppings. As work progresses, remove strips, clean off mortar droppings, and replace in cavity. DELETE SUBPARAGRAPH ABOVE OR BELOW. Parge cavity face of backup wythe using TypeS or TypeN mortar applied in a single coat approximately 3/8 inch (10 mm) thick. Trowel face of parge coat smooth. DELETE PARAGRAPH ABOVE OR BELOW, OR BOTH. Coat cavity face of backup wythe with fluid-applied dampproofing product specified in applicable Division07 Section. DELETE BELOW IF CAVITIES ARE NOT INSULATED; REVISE IF ADHESIVE IS NOT USED. Installing Cavity-Wall Insulation: Place small dabs of adhesive, spaced approximately 12 inches (300 mm) o.c. both ways, on inside face of insulation boards, or attach with plastic fasteners designed for this purpose. Fit courses of insulation between wall ties and other confining obstructions in cavity, with edges butted tightly both ways. Press units firmly against inside wythe of masonry or other construction as shown. Fill cracks and open gaps in insulation with crack sealer compatible with insulation and masonry. MASONRY JOINT REINFORCEMENT General: Provide continuous masonry joint reinforcement as indicated. Install entire length of longitudinal side rods in mortar with a minimum cover of 5/8 inch (16 mm) on exterior side of walls, 1/2 inch (13 mm) elsewhere. Lap reinforcement a minimum of 6 inches (150 mm). REVISE SUBPARAGRAPH BELOW IF DIFFERENT SPACING IS REQUIRED. DELETE IF SHOWN ON DRAWINGS. Space reinforcement not more than 16 inches (406 mm) o.c. DELETE SUBPARAGRAPHS BELOW IF NOT REQUIRED. Space reinforcement not more than 8 inches (203 mm) o.c. in foundation walls and parapet walls. Provide reinforcement not more than 8 inches (203 mm) above and below wall openings and extending 12 inches (305 mm) beyond openings. DELETE SUBPARAGRAPH BELOW IF NOT REQUIRED. Reinforcement above is in addition to continuous reinforcement. Cut or interrupt joint reinforcement at control and expansion joints, unless otherwise indicated. Provide continuity at corners and wall intersections by using prefabricated "L" and "T" sections. Cut and bend reinforcing units as directed by manufacturer for continuity at returns, offsets, column fireproofing, pipe enclosures, and other special conditions. ANCHORING MASONRY TO STRUCTURAL MEMBERS Anchor masonry to structural members where masonry abuts or faces structural members to comply with the following: Provide an open space not less than 1 inch (25 mm) in width between masonry and structural member, unless otherwise indicated. Keep open space free of mortar or other rigid materials. Anchor masonry to structural members with flexible anchors embedded in masonry joints and attached to structure. Space anchors as indicated, but not more than 24 inches (610 mm) o.c. vertically and 36 inches (915 mm) o.c. horizontally. ANCHORING MASONRY VENEERS Anchor masonry veneers to [wall framing] [concrete and masonry backup] with [seismic] masonry-veneer anchors to comply with the following requirements: RETAIN ONE OF THREE SUBPARAGRAPHS BELOW, GENERALLY THE FIRST. SECOND IS FOR HECKMAN'S "POS-I-TIE." THIRD IS FOR HOHMANN & BARNARD'S "AA308" METAL-STUD ANCHOR. Fasten each anchor section [through sheathing to wall framing] [to concrete and masonry backup] with two metal fasteners of type indicated. Fasten anchors [through sheathing to wall framing] [to concrete and masonry backup] with metal fasteners of type indicated. Insert anchor sections in metal studs as sheathing is installed. Provide one anchor at each stud in each horizontal joint between sheathing boards. BIA TECHNICAL NOTES NO.28B RECOMMENDS 2-INCH (50-MM) AIR SPACE. WIDER AIR SPACES REQUIRE CLOSER TIE SPACING. Embed [tie sections] [connector sections and continuous wire] in masonry joints. Provide not less than 2 inches (50 mm) of air space between back of masonry veneer and face of sheathing. Locate anchor sections to allow maximum vertical differential movement of ties up and down. Space anchors as indicated, but not more than 16 inches (406 mm) o.c. vertically and 16 inches (406 mm) o.c. horizontally, with not less than 1 anchor for each 2 sq. ft. (0.2 sq. m) of wall area. Install additional anchors within 12 inches (305 mm) of openings and at intervals, not exceeding 8 inches (203 mm), around the perimeter. RETAIN SUBPARAGRAPH ABOVE OR BELOW AS REQUIRED. SEE EDITING INSTRUCTION NO.10 IN THE EVALUATIONS BEFORE EDITING. ABOVE IS BIA RECOMMENDATION FOR METAL-STUD CONSTRUCTION. BELOW IS BASED ON MSJC CODE. CLOSER SPACING IS FOR ADJUSTABLE 2-PIECE ANCHORS, WIRE ANCHORS 0.148 INCH 3.8 MM IN DIAMETER, AND CORRUGATED SHEET METAL ANCHORS; WIDER SPACING IS FOR ALL OTHER ANCHORS. CONTROL AND EXPANSION JOINTS General: Install control and expansion joints in unit masonry where indicated. Build-in related items as masonry progresses. Do not form a continuous span through movement joints unless provisions are made to prevent in-plane restraint of wall or partition movement. SHOW LOCATIONS OF JOINTS ON DRAWINGS. Form control joints in concrete masonry as follows: RETAIN ONE OF FOUR SUBPARAGRAPHS BELOW. Fit bond-breaker strips into hollow contour in ends of concrete masonry units on one side of control joint. Fill resultant core with grout and rake joints in exposed faces. Install preformed control-joint gaskets designed to fit standard sash block. Install interlocking units designed for control joints. Install bond-breaker strips at joint. Keep head joints free and clear of mortar or rake joint. Install temporary foam-plastic filler in head joints and remove filler when unit masonry is complete. Build in horizontal, pressure-relieving joints where indicated; construct joints by either leaving an air space or inserting a compressible filler of width required for installing sealant and backer rod specified in Division07 Section "Joint Sealants." REVISE BELOW AS REQUIRED. SHOW LOCATIONS OF JOINTS ON DRAWINGS. SEE BIA AND NCMA REFERENCES. Locate horizontal, pressure-relieving joints beneath shelf angles supporting masonry veneer and attached to structure behind masonry veneer. LINTELS DELETE THIS ARTICLE IF STEEL AND MASONRY LINTELS ARE NOT REQUIRED. DELETE TYPES OF LINTELS NOT REQUIRED. COORDINATE WITH DIVISION5 SECTION "METAL FABRICATIONS." Install steel lintels where indicated. Provide masonry lintels where shown and where openings of more than 12 inches (305 mm) for brick-size units and 24 inches (610 mm) for block-size units are shown without structural steel or other supporting lintels. RETAIN ONE OF THREE SUBPARAGRAPHS BELOW, DEPENDING ON APPEARANCE DESIRED. Provide precast lintels made from concrete matching concrete masonry units in color, texture, and compressive strength and with reinforcing bars indicated or required to support loads indicated. Cure precast lintels by the same method used for concrete masonry units. Provide prefabricated or built-in-place masonry lintels. Use specially formed bond beam units with reinforcing bars placed as indicated and filled with coarse grout. Cure precast lintels before handling and installing. Temporarily support built-in-place lintels until cured. Provide either of above at Contractor's option or provide precast or formed-in-place concrete lintels complying with requirements in Division03 Section "Structural Cast-in-Place Concrete." DELETE BELOW IF BEARING IS SHOWN ON DRAWINGS. Provide minimum bearing of 8 inches (200 mm) at each jamb, unless otherwise indicated. FLASHING, WEEP HOLES, AND VENTS General: Install embedded flashing and weep holes in masonry at shelf angles, lintels, ledges, other obstructions to downward flow of water in wall, and where indicated. Prepare masonry surfaces so they are smooth and free from projections that could puncture flashing. Unless otherwise indicated, place through-wall flashing on sloping bed of mortar and cover with mortar. Before covering with mortar, seal penetrations in flashing with adhesive, sealant, or tape as recommended by flashing manufacturer. Install flashing as follows: At multiwythe masonry walls, including cavity walls, extend flashing through outer wythe, turned up a minimum of 8 inches (200 mm), and 1-1/2 inches (38 mm) into the inner wythe. Form 1/4-inch (6-mm) hook in edge of flashing embedded in inner wythe. DELETE SUBPARAGRAPH BELOW IF NO MASONRY-VENEER WALLS WITH SHEATHING BEHIND THEM. At masonry-veneer walls, extend flashing through veneer, across air space behind veneer, and up face of sheathing at least 8 inches (200 mm); with upper edge fastened to back-up by termination bar, with fasteners through sheathing and into studs. At lintels and shelf angles, extend flashing a minimum of 4 inches (100 mm) into masonry at each end. At heads and sills, extend flashing 4 inches (100 mm) at ends and turn flashing up not less than 2 inches (50 mm) to form a pan. DELETE SUBPARAGRAPH BELOW IF RIBBED SHEET METAL FLASHING IS NOT USED. Interlock end joints of ribbed sheet metal flashing by overlapping ribs not less than 1-1/2 inches (38 mm) or as recommended by flashing manufacturer, and seal lap with elastomeric sealant complying with requirements in Division07 Section "Joint Sealants" for application indicated. SUBPARAGRAPH ABOVE CAN BE ACCOMPLISHED ONLY WITH SHEET METAL FLASHING. RETAIN ONE OF THREE SUBPARAGRAPHS BELOW IF FLEXIBLE FLASHING MATERIALS ARE USED. SEE EVALUATIONS. Install metal [drip edges] [and] [sealant stops] with ribbed sheet metal flashing by interlocking hemmed edges to form hooked seam. Seal seam with elastomeric sealant complying with requirements in Division07 Section "Joint Sealants" for application indicated. Install metal drip edges beneath flexible flashing at exterior face of wall. Stop flexible flashing 1/2 inch (13 mm) back from outside face of wall and adhere flexible flashing to top of metal drip edge. For applications not scheduled to receive metal drip edge, cut flexible flashing off flush with face of wall after masonry wall construction is completed. Install weep holes in head joints in exterior wythes of first course of masonry immediately above embedded flashing and as follows: Use specified weep/vent products to form weep holes. Space weep holes 24 inches (600 mm) o.c., unless otherwise indicated. RETAIN VENTS IF WALL IS DESIGNED ON RAIN-SCREEN PRINCIPLE WITH VENTS ACTING TO EQUALIZE AIR-PRESSURE DIFFERENTIAL BETWEEN CAVITY AND EXTERIOR. INDICATE SPACING OF VENTS AND BLOCKING ON DRAWINGS. SEE EVALUATIONS. Install vents in vertical head joints at the top of each continuous cavity at spacing indicated. Use specified weep/vents to form vents. Close cavities off vertically and horizontally with blocking in manner indicated. Install through-wall flashing and weep holes above horizontal blocking. DELETE BELOW IF BUILT-IN REGLETS AND NAILERS ARE NOT USED. Install reglets and nailers for flashing and other related construction where they are shown to be built into masonry. REINFORCED UNIT MASONRY INSTALLATION USUALLY RETAIN PARAGRAPH AND SUBPARAGRAPHS BELOW ONLY IF REINFORCED MASONRY BEAMS, SLABS, SOFFITS, AND SIMILARLY FORMED ELEMENTS ARE REQUIRED. Temporary Formwork and Shores: Construct formwork and shores to support reinforced masonry elements during construction. Construct formwork to conform to shape, line, and dimensions shown. Make it sufficiently tight to prevent leakage of mortar and grout. Brace, tie, and support forms to maintain position and shape during construction and curing of reinforced masonry. Do not remove forms and shores until reinforced masonry members have hardened sufficiently to carry their own weight and other temporary loads that may be placed on them during construction. Placing Reinforcement: Comply with requirements of [ACI530.1/ASCE6/TMS602] [Section2104.5 of the Uniform Building Code]. Grouting: Do not place grout until entire height of masonry to be grouted has attained sufficient strength to resist grout pressure. Comply with requirements of [ACI530.1/ASCE6/TMS602] [Section2104.6 of the Uniform Building Code] for cleanouts and for grout placement, including minimum grout space and maximum pour height. FIELD QUALITY CONTROL SEE EDITING INSTRUCTION NO.11 IN THE EVALUATIONS BEFORE EDITING THIS ARTICLE. Owner [will] [reserves the right to] engage a qualified independent testing agency to perform field quality-control testing indicated below. Payment for these services will be made [by Owner] [from the Inspection and Testing Allowance, as authorized by Change Orders]. Retesting of materials failing to meet specified requirements shall be done at Contractor's expense. TESTING FREQUENCY BELOW IS REQUIRED BY THE 1997 UNIFORM BUILDING CODE WHEN FULL ALLOWABLE STRESSES ARE USED IN THE DESIGN OF MASONRY AND BY MSJC SPECIFICATION WHEN PRISM OR GROUT TESTING IS REQUIRED. Testing Frequency: Tests and Evaluations listed in this Article will be performed during construction for each 5000 sq. ft.(465 sq. m) of wall area or portion thereof. TESTING REQUIREMENTS FOR MORTAR AND GROUT MAY BE DELETED IF PRISM TESTING IS RETAINED. Mortar properties will be tested per [ASTMC780] [UBC Standard21-16]. Grout will be sampled and tested for compressive strength per [ASTMC1019] [UBC Standard21-18]. Brick Tests: For each type and grade of brick indicated, units will be tested according to ASTMC67. RETAIN PARAGRAPH ABOVE AND BELOW IF SUBJECT TO THE 1997 UNIFORM BUILDING CODE AND IF UNIT-STRENGTH METHOD IS USED. DELETE ABOVE AND BELOW AND RETAIN UNIT TESTS IN "SOURCE QUALITY CONTROL" ARTICLE IF MASONRY IS DESIGNED ACCORDING TO MSJC CODE AND UNIT-STRENGTH METHOD IS USED. DELETE UNIT TESTS AT BOTH LOCATIONS IF PRISM TESTING IS RETAINED. Concrete Masonry Unit Tests: For each type of concrete masonry unit indicated, units will be tested according to ASTMC140. DELETE PARAGRAPH BELOW IF UNIT-STRENGTH METHOD IS SELECTED. BELOW IS REQUIRED IF PRISM-TEST METHOD IS USED TO ESTABLISH COMPLIANCE WITH SPECIFIED COMPRESSIVE STRENGTH OF MASONRY. Prism-Test Method: For each type of wall construction indicated, masonry prisms will be tested per [ASTMC1314] [UBC Standard21-17], and as follows: DELETE BELOW IF SEVEN-DAY TESTS ARE NOT REQUIRED. Prepare 1 set of prisms for testing at 7 days and 1 set for testing at 28 days. PARGING Parge predampened masonry walls, where indicated, with TypeS or Type N mortar applied in 2 uniform coats to a total thickness of 3/4 inch (19 mm). Scarify first parge coat to ensure full bond to subsequent coat. Use a steel-trowel finish to produce a smooth, flat, dense surface with a maximum surface variation of 1/8 inch per foot (3 mm per 300 mm). Form a wash at top of parging and a cove at bottom. Damp-cure parging for at least 24 hours and protect the parging until cured. REPAIRING, POINTING, AND CLEANING Remove and replace masonry units that are loose, chipped, broken, stained, or otherwise damaged or that do not match adjoining units. Install new units to match adjoining units; install in fresh mortar, pointed to eliminate evidence of replacement. Pointing: During the tooling of joints, enlarge voids and holes, except weep holes, and completely fill with mortar. Point up joints, including corners, openings, and adjacent construction, to provide a neat, uniform appearance. Prepare joints for sealant application. In-Progress Cleaning: Clean unit masonry as work progresses by dry brushing to remove mortar fins and smears before tooling joints. Final Cleaning: After mortar is thoroughly set and cured, clean exposed masonry as follows: Remove large mortar particles by hand with wooden paddles and nonmetallic scrape hoes or chisels. Test cleaning methods on sample wall panel; leave one-half of panel uncleaned for comparison purposes. Obtain Architect's approval of sample cleaning before proceeding with cleaning of masonry. Protect adjacent stone and nonmasonry surfaces from contact with cleaner by covering them with liquid strippable masking agent, polyethylene film, or waterproof masking tape. DELETE SUBPARAGRAPH ABOVE AND BELOW IF NO CLEANERS ARE SPECIFIED IN PART2 OR IF NO CLEANERS ARE ALLOWED. Wet wall surfaces with water before applying cleaners; remove cleaners promptly by rinsing the surfaces thoroughly with clear water. SELECT SUBPARAGRAPH ABOVE OR BELOW. COORDINATE WITH PRODUCTS RETAINED IN PART2. IF HIGH-PRESSURE WATER CLEANING OR OTHER METHODS ARE ACCEPTABLE, DELETE OR REVISE BELOW AND INSERT APPLICABLE REQUIREMENTS. Clean masonry with a proprietary acidic cleaner applied according to manufacturer's written instructions. Clean concrete masonry by cleaning method indicated in NCMATEK8-2 applicable to type of stain on exposed surfaces. DELETE BELOW IF NO LIMESTONE TRIM. MASONRY WASTE DISPOSAL RETAIN THIS ARTICLE IF CLEAN MASONRY WASTE CAN BE USED AS FILL. THIS DIVERTS SOME MATERIAL FROM THE WASTE STREAM, CONSERVING LANDFILL SPACE. Recycling: Unless otherwise indicated, excess masonry materials are Contractor's property. At completion of unit masonry work, remove from Project site. Disposal as Fill Material: Dispose of clean masonry waste, including broken masonry units, waste mortar, and excess or soil-contaminated sand, by crushing and mixing with fill material as fill is placed. Crush masonry waste to less than 4 inches (100 mm) in each dimension. Mix masonry waste with at least two parts of specified fill material for each part of masonry waste. Fill material is specified in Division 2 Section "Earthwork." GENERALLY RETAIN SUBPARAGRAPH BELOW. IF REQUIRED, INCREASE LIMIT IF ACID-SOIL PLANTS ARE USED FOR FOUNDATION PLANTINGS. Do not dispose of masonry waste as fill within 18 inches (450 mm) of finished grade. Excess Masonry Waste: Remove excess, clean masonry waste that cannot be used as fill, as described above, and other masonry waste, and legally dispose of off Owner's property. END OF SECTION 04 22 00 FOR MDACC USE ONLY. 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