CERTIFICATE OF AWARDABILITY
UNIT MASONRY PART 1 GENERAL
1.01 SECTION INCLUDES A. Concrete Block.
B. Mortar and Grout.
C. Reinforcement and Anchorage.
D. Flashings.
E. Accessories.
1.02 RELATED REQUIREMENTS
A. Section 05 50 00 - Metal Fabrications: Loose steel lintels.
B. Section 07 21 40 - Foamed-In-Place Insulation.
C. Section 07 90 05 - Joint Sealers: Backing rod and sealant at control and expansion joints.
D. Section 08 11 16 - Aluminum Doors and Frames: Frames installed in masonry walls.
1.03 REFERENCE STANDARDS
A. ACI 530/530.1/ERTA - Building Code Requirements and Specification for Masonry Structures;
American Concrete Institute International ; 2009.
B. ASTM A82/A82M - Standard Specification for Steel Wire, Plain, for Concrete Reinforcement ; 2007.
C. ASTM A153/A153M - Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware ; 2009.
D. ASTM A615/A615M - Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement ; 2009b.
E. ASTM A653/A653M - Standard Specification for Steel Sheet, Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process ; 2010.
F. ASTM C90 - Standard Specification for Loadbearing Concrete Masonry Units ; 2011.
G. ASTM C140 - Standard Test Methods of Sampling and Testing Concrete Masonry Units and Related Units ; 2011.
H. ASTM C150 - Standard Specification for Portland Cement ; 2011.
I. ASTM C207 - Standard Specification for Hydrated Lime for Masonry Purposes ; 2006.
J. ASTM C270 - Standard Specification for Mortar for Unit Masonry ; 2010.
K. ASTM C404 - Standard Specification for Aggregates for Masonry Grout ; 2007.
L. ASTM C476 - Standard Specification for Grout for Masonry ; 2010.
M. ASTM C979 - Standard Specification for Pigments for Integrally Colored Concrete ; 2010.
N. ASTM D226 - Standard Specification for Asphalt-Saturated Organic Felt Used in Roofing and Waterproofing ; 2009.
O. ASTM F1554 - Standard Specification for Anchor Bolts, Steel, 36, 55, and 105-ksi Yield Strength ; 2004.
P. NCMA TEK 8-2A - Removal of Stains from Concrete Masonry; National Concrete Masonry Association ; 1995.
Q. UL (FRD) - Fire Resistance Directory; Underwriters Laboratories Inc. ; current edition.
1.04 SUBMITTALS
A. See Section 01300 - Submittals for required procedures.
B. Product Data: Provide data for masonry units, fabricated wire reinforcement, mortar, and masonry accessories.
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04 20 00 - 2 C. LEED - EnV-Block as manufactured by Michigan Certified Concrete Products. 1235 Hoyt St SE,
Grand Rapids, MI 49507, (800) 577-2424. www.micertconcrete.com 1. EnV-Block - standard 42% recycled content.
2. ASTM C90 and C129.
3. Provide document on recycled content.
D. LEED: Submit invoices and documentation from manufacturer of the amounts of post-consumer and post-industrial recycled content for products with recycled content.
E. LEED: Submit invoices and documentation showing manufacturing locations and origins of materials for products manufactured and sourced within 500 miles of building site.
1.05 QUALITY ASSURANCE
A. Comply with provisions of ACI 530/530.1/ERTA, except where exceeded by requirements of the contract documents.
1.06 DELIVERY, STORAGE, AND HANDLING
A. Deliver, handle, and store masonry units by means that will prevent mechanical damage and contamination by other materials.
1.07 ENVIRONMENTAL REQUIREMENTS
A. Cold and Hot Weather Requirements: Comply with requirements of ACI 530.1/ASCE 6/TMS 602 or applicable building code, whichever is more stringent.
PART 2 PRODUCTS
2.01 CONCRETE MASONRY UNITS
A. Concrete Block: Comply with referenced standards and as follows:
1. Size: Nominal face dimensions and nominal depths as indicated on the drawings for specific locations.
2. Special Shapes: Provide non-standard blocks configured for corners, lintels, headers, and other detailed conditions.
a. Western Style bond beam.
3. Load-Bearing and Non-Load Bearing Units: ASTM C 90, medium weight.
a. Both hollow and solid block .
b. Exposed faces: Special color and texture where indicated, as follows: Refer to Drawings for colors, textures and locations.
4. Water Repellant Block: ASTM C90.
a. Limestone aggregate: ASTM C-33-02.
b. Normal (sand and gravel) aggregate: ASTM C-33-02.
c. Integral liquid polymeric admixture mixed with concrete during production of CMU to provide resistance to water penetration in accordance with ASTM E 514-90.
1) Acceptable Products:
(a) Dry-Block Water Repellant Block Admixture as manufactured. by W.R.
Grace Co.
(b) Eucon Blocktite as manufactured by The Euclid Chemical Company 2.02 MORTAR AND GROUT MATERIALS
A. Portland Cement: ASTM C150, Type I ; color as required to produce approved color sample.
1. Hydrated Lime: ASTM C207, Type S.
2. Grout Aggregate: ASTM C404.
B. Pigments for Colored Mortar: Pure, concentrated mineral pigments specifically intended for mixing into mortar and complying with ASTM C979.
C. Water: Clean and potable.
D. Accelerating Admixture: Nonchloride type for use in cold weather.
1. Acceptable product: "AccelGuard 80" as manufacturerd by The Euclid Chemical Co..
2.03 REINFORCEMENT AND ANCHORAGE
A. Manufacturers of Joint Reinforcement and Anchors:
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04 20 00 - 3 1. Dur-O-Wal: www.dur-o-wal.com.
2. Hohmann & Barnard, Inc: www.h-b.com.
3. WIRE-BOND: www.wirebond.com.
4. AA Wire Products Company.
5. Heckmann Building Products, Inc: www.heckmannbuildingprods.com.
6. National Wire Products Industries, Inc.
7. Substitutions: See Section 01 60 00 - Product Requirements.
B. Anchorage Materials:
1. Anchor Bolts: ASTM A F1554, Grade 36, hot-dipped galvanized, hooked anchor bolt with flat washer and threaded nut for blocking attachment.
a. Diameter: 1/2 inch, unless otherwise noted.
b. Length: Straight shaft length of blocking thickness plus 10 inches; bottom hook length of 2 inches; threaded length of blocking thickness plus 1-1/2 inches, unless otherwise noted.
c. Spacing: 32 inches on center, unless otherwise noted.
C. Reinforcing Steel: ASTM A615/A615M Grade 60 (420) deformed billet bars; uncoated.
D. Single Wythe Joint Reinforcement: Ladder type; ASTM A82/A82M steel wire, hot dip
galvanized after fabrication to ASTM A153/A153M, Class B; 0.1483 inch side rods with 0.1483 inch cross rods; width as required to provide not more than 1 inch and not less than 1/2 inch of mortar coverage on each exposure.
E. Flexible Anchors: 2-piece anchors that permit differential movement between masonry and building frame, sized to provide not more than 1 inch and not less than 1/2 inch of mortar coverage from masonry face.
1. Steel frame: Crimped wire anchors for welding to frame, 0.25 inch thick, with trapezoidal wire ties 0.1875 inch thick, hot dip galvanized to ASTM A 153/A 153M, Class B.
2.04 FLASHINGS
A. Laminated Copper Fabric ("fuzzy copper"): 3 oz. Flash vent as manufactured by York Manufacturing, Inc.
1. Locations: As indicated on drawings.
B. Pre-Coated Galvanized Steel Flashing: ASTM A653/A653M, with G90/Z275 coating, 24 gage total thickness, shop precoated with fluoropolymer coating in color matching masonry.
C. Lap Sealant: Butyl type as specified in Section 07 90 05.
D. Products shall comply with the Michigan Building Code (2003 1405.3.2) "Flashing shall extend to, or beyond, the finished face of the wall".
2.05 ACCESSORIES
A. Resilient Wall Pads: Use below floor/roof construction at top of masonry walls to prevent transfer of loads to masonry walls.
1. Non-rated walls: Compressible foam pad cut profile of floor deck ribs and also allowing minimum of 1/2 inch for deflection. Product EJ 2000 Closure Plug as manufactured by Williams Products, Inc.
2. Rated walls: Comply with ASTM E-84 and ASTM E-119. Compressible fiber pad, fully resistible to fire applications. Product Dynashield Ceramic Fiber as manufactured by Williams Products, Inc.
B. Sand Fill: Clean dried beach sand, commonly referred to as "baby sand".
C. Preformed Control Joints: Neoprene material. Provide with corner and tee accessories, fused joints.
1. Manufacturers:
a. Dur-O-Wal : www.dur-o-wal.com.
b. Hohmann & Barnard, Inc (including Dur-O-Wal brand) ; Product ____: www.h-b.com.
c. WIRE-BOND: www.wirebond.com.
d. Substitutions: See Section 01 60 00 - Product Requirements.
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04 20 00 - 4 D. Joint Filler: Closed cell polyethylene; oversized 50 percent to joint width; self expanding; 3/8
inch wide by maximum lengths available.
1. Manufacturers:
a. Dur-O-Wal : www.dur-o-wal.com.
b. Hohmann & Barnard, Inc (including Dur -O-Wal brand) ; Product ____: www.h-b.com.
c. WIRE-BOND: www.wirebond.com.
d. Substitutions: See Section 01 60 00 - Product Requirements.
E. Joint Sealant: as specified in Section 07 90 05.
F. Building Paper: ASTM D226, Type I ("No.15") asphalt felt.
G. Cleaning Solution: Non-acidic, not harmful to masonry work or adjacent materials.
2.06 MORTAR AND GROUT MIXES
A. Mortar for Unit Masonry: ASTM C270, using the Proportion Specification.
B. Grout: ASTM C476. Consistency required to fill completely volumes indicated for grouting; fine grout for spaces with smallest horizontal dimension of 2 inches or less; coarse grout for spaces with smallest horizontal dimension greater than 2 inches.
C. Mixing: Use mechanical batch mixer and comply with referenced standards.
PART 3 EXECUTION 3.01 EXAMINATION
A. Verify that field conditions are acceptable and are ready to receive masonry.
B. Verify that related items provided under other sections are properly sized and located.
C. Verify that built-in items are in proper location, and ready for roughing into masonry work.
3.02 PREPARATION
A. Direct and coordinate placement of metal anchors supplied for installation under other sections.
B. Provide temporary bracing during installation of masonry work. Maintain in place until building structure provides permanent bracing.
3.03 COLD AND HOT WEATHER REQUIREMENTS
A. Maintain materials and surrounding air temperature to minimum 40 degrees F prior to, during, and 48 hours after completion of masonry work.
B. Maintain materials and surrounding air temperature to maximum 90 degrees F prior to, during, and 48 hours after completion of masonry work.
3.04 COURSING
A. Establish lines, levels, and coursing indicated. Protect from displacement.
B. Maintain masonry courses to uniform dimension. Form vertical and horizontal joints of uniform thickness.
C. Concrete Masonry Units:
1. Bond: Running.
2. Coursing: One unit and one mortar joint to equal 8 inches.
3.05 PLACING AND BONDING
A. Avoid use of masonry units of less than 1/2 size. Do not use units with less than nominal 4 inch horizontal face dimensions at corners and jambs.
B. Lay hollow masonry units with face shell bedding on head and bed joints.
C. Buttering corners of joints or excessive furrowing of mortar joints is not permitted.
D. Remove excess mortar and mortar smears as work progresses.
E. Interlock intersections and external corners - as indicated on Structural Drawings.
F. Do not shift or tap masonry units after mortar has achieved initial set. Where adjustment must be made, remove mortar and replace.
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04 20 00 - 5 G. Perform job site cutting of masonry units with proper tools to provide straight, clean, unchipped
edges. Prevent broken masonry unit corners or edges.
H. Cut mortar joints flush where wall tile is scheduled, resilient base is scheduled, or cavity insulation vapor barrier adhesive is applied.
I. Mortar Joints:
1. Make mortar joints visually and dimensionally consistent. Except as otherwise indicated, maintain mortar joint widths of 3/8 inch
2. Concealed Joints: Cut off flush with concealed face of wall, unless otherwise detailed.
3. Interior joints:
a. Tooled concave (exposed to view): Using concave jointer slightly larger than joint width, tool exposed joints before mortar has assumed final set.
4. Exterior joints:
a. Flush brushed: Construct a compressed joint flush with block wall surfaces of recess - between flutes. Before mortar has assumed final set, brush joint surface with soft bristle brush to give joint surface similar appearance and texture to block wall surface.
J. Fill cores of masonry units completely full as walls are being constructed..
3.06 CAVITY MORTAR CONTROL
A. Do not permit mortar to drop or accumulate into cavity air space or to plug weep/cavity vents.
B. For cavity walls, build inner wythe ahead of outer wythe to accommodate accessories.
3.07 REINFORCEMENT AND ANCHORAGE - GENERAL
A. Unless otherwise indicated on drawings or specified under specific wall type, install horizontal joint reinforcement 16 inches on center.
B. Place masonry joint reinforcement in first horizontal joints above and below openings. Extend minimum 16 inches each side of opening.
C. Place continuous joint reinforcement in first joint below top of walls.
D. Lap joint reinforcement ends minimum 6 inches.
E. Fasten anchors to structural framing and embed in masonry joints as masonry is laid. Unless otherwise indicated on drawings or closer spacing is indicated under specific wall type, space anchors at maximum of 36 inches horizontally and 24 inches vertically.
1. Maintain open space of 1 inch or more between face of framing member and masonry elements.
F. Clean reinforcement bars of loose rust; do not use bars which have rusted excessively or which have bends or kinks not shown on drawings.
3.08 REINFORCEMENT AND ANCHORAGE - SINGLE WYTHE MASONRY A. Install horizontal joint reinforcement 16 inches on center.
B. Place masonry joint reinforcement in first horizontal joints above and below openings. Extend minimum 16 inches each side of opening.
C. Place continuous joint reinforcement in first joint below top of walls.
D. Lap joint reinforcement ends minimum 6 inches.
3.09 MASONRY FLASHINGS
A. Whether or not specifically indicated, install masonry flashing to divert water to exterior at all locations where downward flow of water will be interrupted.
1. Extend flashings full width at such interruptions and at least 8 inches into adjacent masonry or turn up at least 4 inches to form watertight pan at non-masonry construction.
2. Remove or cover protrusions or sharp edges that could puncture flashings.
3. Seal lapped ends and penetrations of flashing before covering with mortar.
4. Install flashings in accordance with manufacturer's directions.
B. Extend metal flashings through exterior face of masonry and turn down to form drip. Install joint sealer below drip edge to prevent moisture migration under flashing.
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04 20 00 - 6 C. Extend plastic and laminated flashings to within 1/4 inch of exterior face of masonry.
D. Lap end joints of flashings at least 4 inches and seal watertight with mastic or elastic sealant.
E. Heads and Sills: Turn up ends of flashing at least 4 inches at heads and sills to form a pan, and seal joints.
3.10 LINTELS
A. Install reinforced unit masonry lintels over openings as indicated on Structural drawings.
1. Do not splice reinforcing bars.
2. Support and secure reinforcing bars from displacement. Maintain position within 1/2 inch of dimensioned position.
3. Place and consolidate grout fill without displacing reinforcing.
4. Allow masonry lintels to attain specified strength before removing temporary supports.
B. Maintain minimum 8 inch bearing on block at each side of opening.
1. At masonry control joints: Leave joint space open (free of mortar) at edges of lintel bearing, close joint with sealant as specified in Section 07 90 05.
3.11 GROUTED COMPONENTS
A. Reinforce bond beams with 2, No. 5 bars, 1 inch from bottom web, unless otherwise indicated on structural drawings.
1. Intersection of Vertical Joints and Bond Beams: Separate grout on each side of joint.
a. Install 3 feet long smooth dowels of same size and quantity as steel reinforcing required in bond beam, placing dowels so dowel will extend 18 inch into each side of control joint.
b. After grout in-fill of first beam has begun to set-up, twist dowels free to allow horizontal movement of dowels (or dowels can be greased before pour).
c. Install 3/8 inch thick preformed non-extruded resilient expansion joint filler material between each grout pour, totally breaking bond beam construction. Hold face of filler 3/8 inch back from face of block for installation of sealant.
B. Support and secure reinforcing bars from displacement. Maintain position within 1/2 inch of dimensioned position.
C. Place and consolidate grout fill without displacing reinforcing.
D. At bearing locations, fill masonry cores with grout for a minimum 12 inches either side of opening.
3.12 CONTROL AND EXPANSION JOINTS
A. Joint Locations: If joint locations are not indicated on drawings then comply with the following:
1. Exterior joints are to extend through to interior side of wall.
2. Exterior Joints: Construct joints at approx. 20 feet on center, beginning near wall corner on one elevation. Locate joints at edges of opening lintels, at edge of sills below opening,.
Coordinate joint locations with Architect before construction begins.
3. Interior Joints: Construct joints at spacings of approx. 28 feet on center but not exceeding 34 feet on center, beginning near wall corner on one elevation. Locate joints at edges of opening lintels, at edge of sills below opening,. Coordinate joint locations with
Architect/Engineer before construction begins.
B. Do not continue horizontal joint reinforcement through control and expansion joints.
C. Form control joint with a sheet building paper bond breaker fitted to one side of the hollow contour end of the block unit. Fill the resultant core with grout fill. Rake joint at exposed unit faces for placement of backer rod and sealant.
D. Install preformed control joint device in continuous lengths. Seal butt and corner joints in accordance with manufacturer's instructions.
E. Size control joint in accordance with Section 07 90 05 for sealant performance.
F. Form expansion joint as detailed.
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04 20 00 - 7 3.13 BUILT-IN WORK
A. As work progresses, install built-in glazed frames, window frames, anchor bolts, and plates and other items to be built into the work and furnished under other sections.
B. Install built-in items plumb, level, and true to line.
C. Do not build into masonry construction organic materials that are subject to deterioration.
D. Solidly grout cores minimum 24 inches below bearing plates, lintels, and similar features and conditions, unless otherwise indicated.
E. Solidly grout cores minimum 16 inches below bearing for concrete plank floor structure.
F. Anchor bolts: Locate bolts at 32 inches on center. and grout solid into block core, unless otherwise indicated. Alternately stagger bolt locations in width of wall core so as to have staggered penetrations through width of attached blocking.
3.14 TOLERANCES
A. Maximum Variation from Alignment of Columns: 1/4 inch.
B. Maximum Variation From Unit to Adjacent Unit: 1/16 inch.
C. Maximum Variation from Plane of Wall: 1/4 inch in 10 ft and 1/2 inch in 20 ft or more.
D. Maximum Variation from Plumb: 1/4 inch per story non-cumulative; 1/2 inch in two stories or more.
E. Maximum Variation from Level Coursing: 1/8 inch in 3 ft and 1/4 inch in 10 ft; 1/2 inch in 30 ft.
F. Maximum Variation of Joint Thickness: 1/8 inch in 3 ft.
G. Maximum Variation from Cross Sectional Thickness of Walls: 1/4 inch.
3.15 CUTTING AND FITTING
A. Cut and fit for chases, pipes, conduit, sleeves, and grounds. Coordinate with other sections of work to provide correct size, shape, and location.
B. Obtain approval prior to cutting or fitting masonry work not indicated or where appearance or strength of masonry work may be impaired.
3.16 FIELD QUALITY CONTROL
A. An independent testing agency will perform field quality control tests, as specified in Section 01 40 00.
B. Concrete Masonry Unit Tests: Test each variety of concrete unit masonry in accordance with ASTM C140 for conformance to requirements of this specification.
3.17 CLEANING
A. Clean masonry after mortar is thoroughly set and cured.
B. Remove excess mortar and mortar droppings.
C. Replace defective mortar. Match adjacent work.
D. Clean soiled surfaces with cleaning solution.
E. Use non-metallic tools in cleaning operations.
F. Concrete Masonry: Comply with NCMA Tek Bulletin No. 8-2A.
G. Cast Stone Units: Do not "power wash" cast stone units. Clean cast stone units using methods recommended by manufacturer of cast stone.
3.18 PROTECTION
A. Without damaging completed work, provide protective boards at exposed external corners that are subject to damage by construction activities.
B. Cover tops of incomplete work with waterproof sheet material at end of each work day and when masonry work is not under way. Secure weather protection in place with weights or temporary fasteners.
C. Remove mortar, soil, and other such materials from exposed masonry faces to prevent staining.
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04 20 00 - 8 D. Prevent splashing and soiling of masonry near ground level by spreading sheet material to
cover soil or masonry faces.
E. Protect horizontal masonry elements from mortar droppings.
F. Loading: Do not apply uniform floor or roof loads for at least 12 hours, or concentrated loads for at least 3 days, after completion of masonry elements.
END OF SECTION
11161 Issued for Bids & Construction
A. Section Includes: Manufactured stone veneer B. Related Sections:
1. Section 04 20 00 - Unit Masonry.
2. Section 07 62 00 - Sheet Metal Flashing and Trim.
1.02 REFERENCES
A. American Concrete Institute (ACI).
B. American Society for Testing and Materials (ASTM):
1. ASTM C 39, Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens.
2. ASTM C 67, Standard Test Methods for Sampling and Testing Brick and Structural Clay Tile.
3. ASTM C 177, Standard Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Guarded-Hot-Plate Apparatus.
4. ASTM C 192, Standard Practice for Making and Curing Concrete Test Specimens in the Laboratory.
5. ASTM C 270, Standard Specification for Mortar for Unit Masonry.
6. ASTM C 482, Standard Test Method for Bond Strength of Ceramic Tile to Portland Cement.
7. ASTM D 226, Standard Specification for Asphalt-Saturated Organic Felt Used in Roofing and Waterproofing.
C. International Code Council (ICC):
1. ES Report.
2. UBC Standard No. 14-1, Kraft Waterproof Building Paper.
2. UBC Standard No. 14-1, Kraft Waterproof Building Paper.