HomeMy WebLinkAbout042000 unit masonry.pdf Giant Eagle Market #6550 The Bridges, Carmel, Indiana
Building Shell Bid & Permit
DLA Project 2014040.00
August 12, 2014
UNIT MASONRY 042000 - 1
SECTION 042000 - UNIT MASONRY
PART 1 - GENERAL
1.1 SUMMARY
A. Section Includes:
1. Concrete masonry units (CMU's).
2. Decorative concrete masonry units, with exposed finished faces to exterior.
B. Related Sections:
1. Section 055000 "Metal Fabrications" for furnishing steel lintels and shelf angles for unit
masonry.
2. Section 076200 "Sheet Metal Flashing and Trim" for furnishing manufactured reglets
installed in masonry joints.
3. Section 071900 “Water Repellents” for post-applied water repellent application.
1.2 PRECONSTRUCTION TESTING
A. Preconstruction Testing Service: Owner will engage a qualified independent testing agency to
perform preconstruction testing indicated below. Retesting of materials that fail to comply with
specified requirements shall be done at Contractor's expense.
1. Concrete Masonry Unit Test: For each type of unit required, according to ASTM C 140
for compressive strength.
2. Mortar Test (Property Specification): For each mix required, according to
ASTM C 109/C 109M for compressive strength, ASTM C 1506 for water retention, and
ASTM C 91 for air content.
3. Mortar Test (Property Specification): For each mix required, according to ASTM C 780
for compressive strength.
4. Grout Test (Compressive Strength): For each mix required, according to ASTM C 1019.
1.3 PRE-INSTALLATION MEETINGS
A. Pre-installation Conference: Conduct conference at Project site.
1. Attendees: Authorized representatives of Owner, Architect, Structural Engineer, General
Contractor, masonry subcontractor, and masonry supplier.
2. Agenda: Discuss items of significance that could affect the work, including the
following:
a. Schedule.
b. Proposed measures to be taken during adverse weather conditions.
c. Compatibility of materials.
d. Testing and inspection requirements.
e. Coordination with other work.
Giant Eagle Market #6550 The Bridges, Carmel, Indiana
Building Shell Bid & Permit
DLA Project 2014040.00
August 12, 2014
UNIT MASONRY 042000 - 2
1.4 ACTION SUBMITTALS
A. Product Data: For each type of product indicated.
B. LEED Submittals:
1. Product Certificates for Credit MR 5: For products and materials required to comply with
requirements for regional materials indicating location and distance from Project of
material manufacturer and point of extraction, harvest, or recovery for each raw material.
Include statement indicating cost for each regional material and the fraction by weight
that is considered regional.
C. Shop Drawings: For reinforcing steel. Detail bending and placement of unit masonry
reinforcing bars. Comply with ACI 315, "Details and Detailing of Concrete
Reinforcement." Show elevations of reinforced walls.
D. Samples for Verification: For each type and color of exposed masonry unit and colored mortar.
1.5 INFORMATIONAL SUBMITTALS
A. Material Certificates: For each type and size of product indicated. For masonry units include
material test reports substantiating compliance with requirements.
B. Mix Designs: For each type of mortar and grout. Include description of type and proportions of
ingredients.
1. Include test reports for mortar mixes required to comply with property specification. Test
according to ASTM C 109/C 109M for compressive strength, ASTM C 1506 for water
retention, and ASTM C 91 for air content.
2. Include test reports, according to ASTM C 1019, for grout mixes required to comply with
compressive strength requirement.
C. Decorative Concrete Masonry Unit Manufacturer’s letter of approval of the completed mockup.
D. Installer’s letter stating water-repellent admixture has been provided at all mortar in exterior
walls.
1.6 QUALITY ASSURANCE
A. Masonry Standard: Comply with ACI 530.1/ASCE 6/TMS 602 unless modified by requirements
in the Contract Documents.
B. Mockups:
1. Build mockups to verify selections made under sample submittals, to demonstrate
aesthetic effects, and set quality standards for materials and execution.
2. Build mockups for each type of exposed unit masonry construction in sizes
approximately 72 inches long by 60 inches high by full thickness. Include the following:
a. Decorative masonry units, all colors.
b. Brick, all colors.
Giant Eagle Market #6550 The Bridges, Carmel, Indiana
Building Shell Bid & Permit
DLA Project 2014040.00
August 12, 2014
UNIT MASONRY 042000 - 3
c. Sill units.
d. Drainage system.
e. Insulation.
f. Flashing.
g. All colors of custom mortar, including tooling of interior and exterior exposed
joints.
h. Grout.
i. Reinforcing.
j. At least one control joint.
k. Expansion joint.
l. One outside corner.
m. Storefront framing and transition detail.
3. Erect entire mockup with methods representative of daily construction and in-progress
cleaning practices.
4. Clean one-half of mockup to represent final exterior and interior clean down using
specified cleaning methods.
5. Receive acceptance of mockup prior to proceeding with masonry installation.
6. Mockup will remain in place as a quality standard for masonry work.
7. Remove mockup at Substantial Completion.
1.7 DELIVERY, STORAGE, AND HANDLING
A. 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.
B. Store cementitious materials on elevated platforms, under cover, and in a dry location. Do not
use cementitious materials that have become damp.
C. Store aggregates where grading and other required characteristics can be maintained and
contamination avoided.
D. Deliver preblended, dry mortar mix in moisture-resistant containers. Store preblended, dry
mortar mix in delivery containers on elevated platforms in a dry location or in covered
weatherproof dispensing silos.
E. Store masonry accessories, including metal items, to prevent corrosion and accumulation of dirt
and oil.
1.8 FIELD CONDITIONS
A. 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.
B. Do not apply uniform floor or roof loads for at least 12 hours and concentrated loads for at least
three days after building masonry walls or columns.
Giant Eagle Market #6550 The Bridges, Carmel, Indiana
Building Shell Bid & Permit
DLA Project 2014040.00
August 12, 2014
UNIT MASONRY 042000 - 4
C. 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.
1. Protect base of walls from rain-splashed mud and from mortar splatter by spreading
coverings on ground and over wall surface.
2. Protect sills, ledges, and projections from mortar droppings.
3. Protect surfaces of window and door frames, as well as similar products with painted and
integral finishes, from mortar droppings.
4. 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.
D. 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
ACI 530.1/ASCE 6/TMS 602.
E. Hot-Weather Requirements: Comply with hot-weather construction requirements contained in
ACI 530.1/ASCE 6/TMS 602.
PART 2 - PRODUCTS
2.1 MASONRY UNITS, GENERAL
A. Defective Units: Referenced masonry unit standards may allow a certain percentage of units to
contain chips, cracks, or other defects exceeding limits stated in the standard. Do not use units
where such defects will be exposed in the completed Work.
B. Fire-Resistance Ratings: Where indicated, provide units that comply with requirements for fire-
resistance ratings indicated as determined by testing according to ASTM E 119, by equivalent
masonry thickness, or by other means, as acceptable to authorities having jurisdiction.
2.2 CONCRETE MASONRY UNITS
A. Regional Materials: CMUs shall be manufactured within 500 miles of Project site from
aggregates and cement that have been extracted, harvested, or recovered, as well as
manufactured, within 500 miles of Project site.
B. Decorative CMUs: ASTM C 90.
1. ColossalBLOK by Oberfields LLC.
2. Unit Compressive Strength: Provide units with minimum average net-area compressive
strength indicated on the Structural Drawings.
3. Density Classification: Normal weight.
4. Nominal Dimensions: 12 inches high, 16 inches long, 6 inches deep; 8 inches high, 16
inches long, 6 inches deep.
5. Pattern and Texture: Fine textured smooth.
6. Colors:
Giant Eagle Market #6550 The Bridges, Carmel, Indiana
Building Shell Bid & Permit
DLA Project 2014040.00
August 12, 2014
UNIT MASONRY 042000 - 5
a. Oberfield’s Buff Blend #2201B.
C. Shapes: Provide special shapes indicated, and for sills, corners, jambs, sashes, movement joints,
bonding, and other special conditions.
D. Integral Water Repellent: Provide units made with liquid polymeric, integral water repellent
admixture that does not reduce flexural bond strength for exposed units and where indicated.
1. Products: Subject to compliance with requirements, provide one of the following:
a. ACM Chemistries; RainBloc.
b. BASF Aktiengesellschaft; Rheopel Plus.
c. Grace Construction Products, W. R. Grace & Co. - Conn.; Dry-Block.
d. Krete Industries Inc., Krete BGP (NS) or Krete HQ Plus.
E. CMUs: ASTM C 90.
1. Unit Compressive Strength: Provide units with minimum average net-area compressive
strength indicated on the Structural Drawings.
2. Density Classification: Normal weight.
F. Concrete Building Brick: ASTM C 55, normal weight.
2.3 MORTAR AND GROUT MATERIALS
A. Regional Materials: Aggregate for mortar and grout, cement, and lime shall be extracted,
harvested, or recovered, as well as manufactured, within 500 miles of Project site.
B. Portland Cement: ASTM C 150, Type I or II, except Type III may be used for cold-weather
construction. Provide natural color or white cement as required to produce mortar color
indicated.
C. Hydrated Lime: ASTM C 207, Type S.
D. Portland Cement-Lime Mix: Packaged blend of portland cement and hydrated lime containing
no other ingredients.
E. Masonry Cement: ASTM C 91.
F. Mortar Pigments: Natural and synthetic iron oxides and chromium oxides, compounded for use
in mortar mixes and complying with ASTM C 979. Use only pigments with a record of
satisfactory performance in masonry mortar.
G. Aggregate for Mortar: ASTM C 144.
1. For joints less than 1/4 inch thick, use aggregate graded with 100 percent passing the
No. 16 sieve.
2. White-Mortar Aggregates: Natural white sand or crushed white stone.
3. Colored-Mortar Aggregates: Natural sand or crushed stone of color necessary to produce
required mortar color.
H. Aggregate for Grout: ASTM C 404.
Giant Eagle Market #6550 The Bridges, Carmel, Indiana
Building Shell Bid & Permit
DLA Project 2014040.00
August 12, 2014
UNIT MASONRY 042000 - 6
I. Water-Repellent Admixture: Liquid water-repellent mortar admixture intended for use and
compatible with CMUs containing integral water repellent by same manufacturer.
1. Products: Subject to compliance with requirements, provide one of the following:
2. ACM Chemistries; RainBloc.
3. BASF Aktiengesellschaft; Rheopel Plus.
4. Grace Construction Products, W. R. Grace & Co. - Conn.; Dry-Block.
5. Krete Industries Inc., Krete BGP (NS) or Krete HQ.
J. Water: Potable.
2.4 REINFORCEMENT
A. Uncoated Steel Reinforcing Bars: ASTM A 615/A 615M or ASTM A 996/A 996M, Grade 60.
B. Masonry Joint Reinforcement, General: ASTM A 951/A 951M.
1. Interior Walls: Mill-galvanized, carbon steel.
2. Exterior Walls: Hot-dip galvanized, carbon steel.
3. Wire Size for Side Rods: 0.187-inch diameter.
4. Wire Size for Cross Rods: 0.148-inch diameter.
5. Spacing of Cross Rods, Tabs, and Cross Ties: Not more than 16 inches o.c.
6. Provide in lengths of not less than 10 feet, with prefabricated corner and tee units.
C. Masonry Joint Reinforcement for Single-Wythe Masonry: Truss type with single pair of side
rods.
2.5 TIES AND ANCHORS
A. Materials: Provide ties and anchors specified in this article that are made from materials that
comply with the following unless otherwise indicated.
1. Hot-Dip Galvanized, Carbon-Steel Wire: ASTM A 82/A 82M; with
ASTM A 153/A 153M, Class B-2 coating.
2. Steel Sheet, Galvanized after Fabrication: ASTM A 1008/A 1008M, Commercial Steel,
with ASTM A 153/A 153M, Class B coating.
3. Steel Plates, Shapes, and Bars: ASTM A 36/A 36M.
B. Wire Ties, General: Unless otherwise indicated, size wire ties to extend at least halfway through
veneer but with at least 5/8-inch cover on outside face. Outer ends of wires are bent 90 degrees
and extend 2 inches parallel to face of veneer.
C. Individual Wire Ties:
1. Rectangular units with closed ends and not less than 4 inches wide.
2. Wire: Fabricate from 3/16-inch diameter, hot-dip galvanized steel wire.
D. Rigid Anchors:
1. Fabricate from steel bars 1-1/2 inches wide by 1/4 inch thick by 24 inches long, with ends
turned up 2 inches or with cross pins unless otherwise indicated.
2. Corrosion Protection: Hot-dip galvanized to comply with ASTM A 153/A 153M.
Giant Eagle Market #6550 The Bridges, Carmel, Indiana
Building Shell Bid & Permit
DLA Project 2014040.00
August 12, 2014
UNIT MASONRY 042000 - 7
E. Anchor Bolts: Headed or L-shaped steel bolts as indicated, complying with ASTM A 307,
Grade A; with ASTM A 563 hex nuts and, where indicated, flat washers; hot-dip galvanized to
comply with ASTM A 153/A 153M, Class C; of dimensions indicated.
2.6 EMBEDDED FLASHING MATERIALS
A. Metal Flashing: Provide metal flashing complying with SMACNA's "Architectural Sheet Metal
Manual", as indicated on Drawings, and as follows:
1. Metal Drip Edge: Fabricate from stainless steel. Extend at least 3 inches into wall and 1/2
inch out from wall, with outer edge bent down 30 degrees and hemmed.
2. Metal Sealant Stop: Fabricate from stainless steel. Extend at least 3 inches into wall and
out to exterior face of wall. At exterior face of wall, bend metal back on itself for 3/4 inch
and down into joint 1/4 inch to form a stop for retaining sealant backer rod.
3. Metal Expansion-Joint Strips: Fabricate from stainless steel to shapes indicated.
4. Solder For Stainless Steel: ASTM B 32, Grade Sn60, with acid flux of type
recommended by stainless-steel sheet manufacturer.
B. Flexible Flashing: Use the following unless otherwise indicated:
1. 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 0.030 inch.
a. Products: Subject to compliance with requirements, provide one of the following:
1) Carlisle Coatings & Waterproofing; CCW-705-TWF Thru-Wall Flashing.
2) Dayton Superior Corporation, Dur-O-Wal Division; Dur-O-Barrier Thru-
Wall Flashing.
3) Grace Construction Products, W. R. Grace & Co. - Conn.; Perm-A-Barrier
Wall Flashing.
4) W. R. Meadows, Inc.; Air-Shield Thru-Wall Flashing.
C. Sealants for Sheet Metal Flashings: As specified in Section 076200 "Sheet Metal Flashing and
Trim."
D. Adhesives, Primers, and Seam Tapes for Flashings: Flashing manufacturer's standard products
or products recommended by flashing manufacturer for bonding flashing sheets to each other
and to substrates.
2.7 MISCELLANEOUS MASONRY ACCESSORIES
A. Compressible Filler: Premolded filler strips complying with ASTM D 1056, Grade 2A1;
compressible up to 35 percent; formulated from neoprene, urethane or PVC.
B. Preformed Control-Joint Gaskets: Made from styrene-butadiene-rubber compound, complying
with ASTM D 2000, Designation M2AA-805 or PVC, complying with ASTM D 2287,
Type PVC-65406 and designed to fit standard sash block and to maintain lateral stability in
masonry wall; size and configuration as indicated.
Giant Eagle Market #6550 The Bridges, Carmel, Indiana
Building Shell Bid & Permit
DLA Project 2014040.00
August 12, 2014
UNIT MASONRY 042000 - 8
C. Bond-Breaker Strips: Asphalt-saturated, organic roofing felt complying with ASTM D 226,
Type I (No. 15 asphalt felt).
D. Cellular Plastic Weep/Vent: One-piece, flexible extrusion made from UV-resistant
polypropylene copolymer, full height and width of head joint and depth 1/8 inch less than depth
of outer wythe, in color selected from manufacturer's standard. Insect ingress restricted.
E. Mortar Collection Device: Non-absorptive HPDE, 90% open weave mesh, made from at least
20% post-consumer recycled material.
2.8 MASONRY-CELL INSULATION
A. Molded-Polystyrene Insulation Units: Rigid, cellular thermal insulation formed by the
expansion of polystyrene-resin beads or granules in a closed mold to comply with
ASTM C 578, Type I. Provide specially shaped units designed for installing in cores of masonry
units.
1. Products: Subject to compliance with requirements, provide one of the following:
a. Concrete Block Insulating Systems; ICON Universal Inserts.
b. Shelter Enterprises Inc.; Omni Core.
2.9 MASONRY CLEANERS
A. Job-Mixed Detergent Solution: Solution of 1/2 cup dry measure tetrasodium polyphosphate
(Spic and Span) and 1/2 cup dry measure laundry detergent dissolved in 1 gallon of potable
water.
B. 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.
1. Manufacturers: Subject to compliance with requirements, products that may be
incorporated into the Work include, but are not limited to, the following:
a. Diedrich Technologies, Inc.
1) 202 New Masonry Detergent
2) 202V Vana Stop
b. ProSoCo, Inc.
1) Sure Klean Custom Masonry Cleaner
2) Sure Klean Vana Trol
3) Sure Klean Blok Guard and Graffiti Control
2.10 MORTAR AND GROUT MIXES
A. 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. Provide custom blended mortar
mixes to match Architect’s control samples.
Giant Eagle Market #6550 The Bridges, Carmel, Indiana
Building Shell Bid & Permit
DLA Project 2014040.00
August 12, 2014
UNIT MASONRY 042000 - 9
B. Mortar for Unit Masonry: Comply with ASTM C 270, Property Specification. Provide the
following types of mortar for applications stated unless another type is indicated.
1. For masonry below grade or in contact with earth, use Type M.
2. For reinforced masonry, use Type S.
3. For mortar parge coats, use Type S or Type N.
4. For exterior and interior, above-grade, load-bearing and non-load-bearing walls and
parapet walls, use Type S.
5. For interior non-load-bearing partitions; and for other applications where another type is
not indicated, use Type S or Type N.
C. Water-Repellent Admixture: Use water repellent admixture for masonry block containing
water-repellent admixture. Add water-repellent admixture to mortar at the rate required by the
admixture manufacturer.
D. Grout for Unit Masonry: Comply with ASTM C 476.
1. Use grout of type indicated or, if not otherwise indicated, of type (fine or coarse) that will
comply with Table 1.15.1 in ACI 530.1/ASCE 6/TMS 602 for dimensions of grout spaces
and pour height.
2. Proportion grout in accordance with ASTM C 476, Table 1 or paragraph 4.2.2 for
specified 28-day compressive strength indicated, but not less than 3000 psi.
3. Provide grout with a slump of 8 to 11 inches as measured according to
ASTM C 143/C 143M.
PART 3 - EXECUTION
3.1 INSTALLATION, GENERAL
A. Use full-size units without cutting if possible. If cutting is required to provide a continuous
pattern or to fit adjoining construction, cut units with motor-driven saws; provide clean, sharp,
unchipped edges. Allow units to dry before laying unless wetting of units is specified. Install cut
units with cut surfaces and, where possible, cut edges concealed.
B. Select and arrange units for exposed unit masonry to produce a uniform blend of colors and
textures.
3.2 TOLERANCES
A. Dimensions and Locations of Elements:
1. For dimensions in cross section or elevation do not vary by more than plus 1/2 inch or
minus 1/4 inch.
2. For location of elements in plan do not vary from that indicated by more than plus or
minus 1/2 inch.
3. For location of elements in elevation do not vary from that indicated by more than plus or
minus 1/4 inch in a story height or 1/2 inch total.
B. Lines and Levels:
Giant Eagle Market #6550 The Bridges, Carmel, Indiana
Building Shell Bid & Permit
DLA Project 2014040.00
August 12, 2014
UNIT MASONRY 042000 - 10
1. For bed joints and top surfaces of bearing walls do not vary from level by more than 1/4
inch in 10 feet, or 1/2 inch maximum.
2. For conspicuous horizontal lines, such as lintels, sills, parapets, and reveals, do not vary
from level by more than 1/8 inch in 10 feet, 1/4 inch in 20 feet, or 1/2 inch maximum.
3. For vertical lines and surfaces do not vary from plumb by more than 1/4 inch in 10 feet,
3/8 inch in 20 feet, or 1/2 inch maximum.
4. For conspicuous vertical lines, such as external corners, door jambs, reveals, and
expansion and control joints, do not vary from plumb by more than 1/8 inch in 10 feet,
1/4 inch in 20 feet, or 1/2 inch maximum.
5. For lines and surfaces do not vary from straight by more than 1/4 inch in 10 feet, 3/8 inch
in 20 feet, or 1/2 inch maximum.
C. Joints:
1. For bed joints, do not vary from thickness indicated by more than plus or minus 1/8 inch,
with a maximum thickness limited to 1/2 inch.
2. For head and collar joints, do not vary from thickness indicated by more than plus 3/8
inch or minus 1/4 inch.
3. For exposed head joints, do not vary from thickness indicated by more than plus or minus
1/8 inch.
3.3 LAYING MASONRY WALLS
A. 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.
B. Bond Pattern for Exposed Masonry: Unless otherwise indicated, lay exposed masonry in
running bond; do not use units with less than nominal 4-inch horizontal face dimensions at
corners or jambs.
C. Built-in Work: As construction progresses, build in items specified in this and other Sections.
Fill in solidly with masonry around built-in items.
D. Fill space between steel frames and masonry solidly with mortar unless otherwise indicated.
E. Fill cores in hollow CMUs with grout 24 inches under bearing plates, beams, lintels, posts, and
similar items unless otherwise indicated.
3.4 MORTAR BEDDING AND JOINTING
A. Lay hollow CMUs as follows:
1. With face shells fully bedded in mortar and with head joints of depth equal to bed joints.
2. With webs fully bedded in mortar in all courses of reinforced walls.
3. With webs fully bedded in mortar in grouted masonry, including starting course on
footings.
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Building Shell Bid & Permit
DLA Project 2014040.00
August 12, 2014
UNIT MASONRY 042000 - 11
4. With entire units, including areas under cells, fully bedded in mortar at starting course on
footings where cells are not grouted.
B. Lay solid 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.
C. Tool interior and exterior exposed joints slightly concave when thumbprint hard, using a jointer
larger than joint thickness unless otherwise indicated.
D. Cut joints flush for masonry walls to receive direct-applied finishes (other than paint) unless
otherwise indicated.
3.5 MASONRY-CELL INSULATION
A. Install molded-polystyrene insulation units into masonry unit cells before laying units.
3.6 MASONRY JOINT REINFORCEMENT
A. General: Install entire length of longitudinal side rods in mortar with a minimum cover of 5/8
inch on exterior side of walls, 1/2 inch elsewhere. Lap reinforcement a minimum of 6 inches.
1. Space reinforcement not more than 16 inches o.c.
2. Space reinforcement not more than 8 inches o.c. in foundation walls and parapet walls.
3. Provide reinforcement not more than 8 inches above and below wall openings and
extending 12 inches beyond openings in addition to continuous reinforcement.
B. Interrupt joint reinforcement at control and expansion joints unless otherwise indicated.
C. Provide continuity at wall intersections by using prefabricated T-shaped units.
D. Provide continuity at corners by using prefabricated L-shaped units.
3.7 LINTELS
A. Install steel lintels where indicated. Provide minimum bearing for steel lintels as indicated.
3.8 EXPANSION AND CONTROL JOINTS.
A. Provide expansion and control joints where shown on Drawings.
B. Keep joint free of mortar and other debris.
C. Where joints occur in masonry walls:
1. Install cross shaped shear keys in concrete masonry unit wythe with preformed
compressible joint filler on each side of shear key.
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Building Shell Bid & Permit
DLA Project 2014040.00
August 12, 2014
UNIT MASONRY 042000 - 12
2. Install filler, backer rod, and sealant on exposed faces.
D. Use standard notched concrete masonry units (sash blocks) made in full and half-length units
where shear keys are used to create a continuous vertical joint.
E. Interrupt steel joint reinforcement at expansion and control joints unless otherwise shown.
F. Fill opening in exposed face of expansion and control joints with sealant as specified in
Division 09 Section “Joint Sealants”.
3.9 ANCHORING MASONRY TO STRUCTURAL STEEL AND CONCRETE
A. Anchor masonry to structural steel and concrete where masonry abuts or faces structural steel or
concrete to comply with the following:
1. Provide an open space not less than 1 inch wide between masonry and structural steel or
concrete unless otherwise indicated. Keep open space free of mortar and other rigid
materials.
2. Anchor masonry with anchors embedded in masonry joints and attached to structure.
3. Space anchors as indicated, but not more than 24 inches o.c. vertically and 36 inches o.c.
horizontally.
3.10 ANCHORING MASONRY VENEERS
A. Anchor masonry veneers to wall framing and concrete and masonry backup with seismic
masonry-veneer anchors to comply with the following requirements:
1. Fasten anchors through sheathing to wall framing and to concrete and masonry backup
with metal fasteners of type indicated. Use two fasteners unless anchor design only uses
one fastener.
2. Embed tie sections in masonry joints. Provide not less than 2 inches of air space between
back of masonry veneer and face of sheathing.
3. Locate anchor sections to allow maximum vertical differential movement of ties up and
down.
4. Space anchors as indicated, but not more than 16 inches o.c. vertically and 24 inches o.c.
horizontally with not less than 1 anchor for each 3.5 sq. ft. of wall area. Install additional
anchors within 12 inches of openings and at intervals, not exceeding 36 inches, around
perimeter.
3.11 FLASHING, WEEP, AND VENTS
A. 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.
B. Install flashing as follows unless otherwise indicated:
1. Prepare masonry surfaces so they are smooth and free from projections that could
puncture flashing. Where flashing is within mortar joint, place through-wall flashing on
sloping bed of mortar and cover with mortar. Before covering with mortar, seal
Giant Eagle Market #6550 The Bridges, Carmel, Indiana
Building Shell Bid & Permit
DLA Project 2014040.00
August 12, 2014
UNIT MASONRY 042000 - 13
penetrations in flashing with adhesive, sealant, or tape as recommended by flashing
manufacturer.
2. At lintels and shelf angles, extend flashing a minimum of 6 inches into masonry at each
end. At heads and sills, extend flashing 6 inches at ends and turn up not less than 2 inches
to form end dams.
3. Install metal drip edges beneath flexible flashing at exterior face of wall. Stop flexible
flashing 1/2 inch back from outside face of wall and adhere flexible flashing to top of
metal drip edge.
4. Install metal flashing termination beneath flexible flashing at exterior face of wall. Stop
flexible flashing 1/2 inch back from outside face of wall and adhere flexible flashing to
top of metal flashing termination.
C. Install weeps in head joints in exterior wythes of first course of masonry immediately above
embedded flashing and as follows:
1. Use specified weep/vent products to form weeps.
2. Space weeps 24 inches o.c. unless otherwise indicated.
D. Install vents in head joints in exterior wythes at location indicated. Use specified weep/vent
products to form vents.
3.12 REINFORCED UNIT MASONRY INSTALLATION
A. Temporary Formwork and Shores: Construct formwork and shores as needed to support
reinforced masonry elements during construction.
1. Construct formwork to provide shape, line, and dimensions of completed masonry as
indicated. Make forms 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.
2. Do not remove forms and shores until reinforced masonry members have hardened
sufficiently to carry their own weight and other loads that may be placed on them during
construction.
B. Placing Reinforcement: Comply with requirements in ACI 530.1/ASCE 6/TMS 602.
C. Grouting: Do not place grout until entire height of masonry to be grouted has attained enough
strength to resist grout pressure.
1. Comply with requirements in ACI 530.1/ASCE 6/TMS 602 for cleanouts and for grout
placement, including minimum grout space and maximum pour height.
2. Limit height of vertical grout pours to not more than 60 inches.
3.13 FIELD QUALITY CONTROL
A. Testing and Inspecting: Owner will engage special inspectors to perform tests and inspections
and prepare reports. Allow inspectors access to scaffolding and work areas, as needed to
perform tests and inspections. Retesting of materials that fail to comply with specified
requirements shall be done at Contractor's expense.
Giant Eagle Market #6550 The Bridges, Carmel, Indiana
Building Shell Bid & Permit
DLA Project 2014040.00
August 12, 2014
UNIT MASONRY 042000 - 14
B. Inspections: According to the requirements of the Authority having jurisdiction.
C. Testing Prior to Construction: One set of tests.
D. Testing Frequency: One set of tests for each 5000 sq. ft. of wall area or portion thereof.
E. Concrete Masonry Unit Test: For each type of unit provided, according to ASTM C 140 for
compressive strength.
F. Mortar Aggregate Ratio Test (Proportion Specification): For each mix provided, according to
ASTM C 780.
G. Mortar Test (Property Specification): For each mix provided, according to ASTM C 780. Test
mortar for mortar air content and compressive strength.
H. Grout Test (Compressive Strength): For each mix provided, according to ASTM C 1019.
3.14 REPAIRING, POINTING, AND CLEANING
A. In-Progress Cleaning: Clean unit masonry as work progresses by dry brushing to remove mortar
fins and smears before tooling joints.
B. Final Cleaning: After mortar is thoroughly set and cured, clean exposed masonry as follows:
1. Test cleaning methods on sample wall panel; leave one-half of panel uncleaned for
comparison purposes.
2. Protect surfaces from contact with cleaner.
3. Wet wall surfaces with water before applying cleaners; remove cleaners promptly by
rinsing surfaces thoroughly with clear water.
4. Clean concrete masonry by cleaning method indicated in NCMA TEK 8-2A applicable to
type of stain on exposed surfaces.
3.15 MASONRY WASTE DISPOSAL
A. Masonry Waste Recycling: Return broken CMUs not used as fill to manufacturer for recycling.
B. Excess Masonry Waste: Remove excess clean masonry waste that cannot be recycled and other
masonry waste, and legally dispose of off Owner's property.
END OF SECTION 042000