HomeMy WebLinkAbout04810.pdf BICKFORD OF CARMEL, IN 12/12/2012
UNIT MASONRY ASSEMBLIES 04810 - 1
SECTION 04810 - UNIT MASONRY ASSEMBLIES
PART 1 - GENERAL
1.1 SUMMARY
A. This Section includes unit masonry assemblies consisting of the following:
1. Modular brick.
B. See Division 5 Section "Metal Fabrications" for furnishing steel lintels and shelf angles for unit
masonry.
1.2 SUBMITTALS
A. Product Data: For each type of product indicated.
B. Samples for each type and color of exposed masonry units and colored mortars.
C. Material Certificates: For each type of product indicated. Include statements of material
properties indicating compliance with requirements including compliance with standards and
type designations within standards.
D. Mix Designs: For each type of mortar. Include description of type and proportions of
ingredients.
1.3 PROJECT CONDITIONS
A. 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.
B. Hot-Weather Requirements: Comply with hot-weather construction requirements contained in
ACI 530.1/ASCE 6/TMS 602.
PART 2 - PRODUCTS
2.1 MODULAR BRICK
A. In other Part 2 articles where titles below introduce lists, the following requirements apply to
product selection:
1. Available Manufacturers: Subject to compliance with requirements, manufacturers
offering products that may be incorporated into the Work include, but are not limited to,
manufacturers specified.
a. Statesville Brick
b. ACME Brick.
B. General: Provide shapes indicated and as follows:
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1. For ends of sills and caps and for similar applications that would otherwise expose
unfinished brick surfaces, provide units without cores or frogs and with exposed surfaces
finished.
2. Provide special shapes for applications where shapes produced by sawing would result
in sawed surfaces being exposed to view.
C. Face Brick (BR-1): ASTM C 216, Grade SW and Building (Common) Brick: ASTM C 62,
Grade SW.
1. Manufacturer: Statesville Brick
2. Products: Old Plantation Red (No White)
3. Unit Compressive Strength: Provide units with minimum average net-area compressive
strength of 3000 psi.
4. Initial Rate of Absorption: Less than 30 g/30 sq. in. per minute when tested per
ASTM C 67.
5. Efflorescence: Provide brick that has been tested according to ASTM C 67 and is rated
"not effloresced."
6. Surface Coating: Brick with colors or textures produced by application of coatings shall
withstand 50 cycles of freezing and thawing per ASTM C 67 with no observable
difference in the applied finish when viewed from 10 feet.
D. Accent Brick (BR-2): ASTM C 216, Grade SW and Building (Common) Brick: ASTM C 62,
Grade SW.
1. Manufacturer: ACME Brick
2. Products: Index B
3. Color: Driftwood (207) or color to match cast stone units specified in 04720.
4. Unit Compressive Strength: Provide units with minimum average net-area compressive
strength of 3000 psi.
5. Initial Rate of Absorption: Less than 30 g/30 sq. in. per minute when tested per
ASTM C 67.
6. Efflorescence: Provide brick that has been tested according to ASTM C 67 and is rated
"not effloresced."
7. Surface Coating: Brick with colors or textures produced by application of coatings shall
withstand 50 cycles of freezing and thawing per ASTM C 67 with no observable
difference in the applied finish when viewed from 10 feet.
E. Size (Actual Dimensions): 3-5/8 inches wide by 2-1/4 inches high by 7-5/8 inches long.
2.2 MORTAR AND GROUT MATERIALS
A. Masonry Cement: ASTM C 91.
B. Color: Light Buff by Solomon Colors
C. Water: Potable.
2.3 TIES AND ANCHORS
A. Materials:
1. Hot-Dip Galvanized, Carbon-Steel Wire: ASTM A 82; with ASTM A 153/A 153M,
Class B-2 coating.
2. Steel Plates, Shapes, and Bars: ASTM A 36/A 36M.
B. Adjustable Masonry-Veneer Anchors
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1. General: Provide anchors that allow vertical adjustment but resist tension and
compression forces perpendicular to plane of wall, for attachment over sheathing to wood
or metal studs, and as follows:
a. Structural Performance Characteristics: Capable of withstanding a 100-lbf load in
both tension and compression without deforming or developing play in excess of
0.05 inch.
2. Screw-Attached, Masonry-Veneer Anchors: Units consisting of a wire tie and a metal
anchor section.
a. Anchor Section: Rib-stiffened, sheet metal plate with screw holes top and bottom,
and slotted holes for inserting wire tie.
b. Fabricate sheet metal anchor sections from 0.067-inch- thick, steel sheet,
galvanized after fabrication.
c. Wire Ties: Triangular-, rectangular-, or T-shaped wire ties fabricated from 0.188-
inch- diameter, hot-dip galvanized steel wire.
2.4 EMBEDDED FLASHING MATERIALS
A. Metal Flashing: Provide metal flashing, where flashing is exposed or partly exposed and where
indicated, complying with Division 7 Section "Sheet Metal Flashing and Trim."
1. Metal Drip Edges: 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 Flashing Terminations: 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 3/8
inch to form a stop for retaining sealant backer rod.
B. Flexible Flashing: For flashing not exposed to the exterior, use one of the following, unless
otherwise indicated:
1. Copper-Laminated Flashing: 7-oz./sq. ft. copper sheet bonded with asphalt between 2
layers of glass-fiber cloth.
C. Adhesives, Primers, and Seam Tapes for Flashings: Flashing manufacturer's standard
products or products recommended by flashing manufacturer.
2.5 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 and designed to fit standard sash block and to
maintain lateral stability in masonry wall.
C. Bond-Breaker Strips: Asphalt-saturated, organic roofing felt complying with ASTM D 226,
Type I (No. 15 asphalt felt).
D. Weep/Vent Products: Use one of the following, unless otherwise indicated:
1. 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.
E. Cavity Drainage Material: Free-draining mesh, made from polymer strands that will not degrade
within the wall cavity.
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1. Manufacturer: Mortar Net, USA, Ltd., 541 South Lake Street, Gary, IN 46403, phone:
800.664.6638, fax: 219.939.3877.
2. System: MN-1 (10 inches high by 1 inch thick)
3. Provide one of the following configurations:
a. Strips, full-depth of cavity and 10 inches wide, with dovetail shaped notches 7
inches deep.
2.6 MASONRY CLEANERS
A. Proprietary Acidic Cleaner: Manufacturer's standard-strength cleaner designed for removing
mortar/grout stains from new masonry without damaging masonry. Use product approved for
intended use by cleaner manufacturer and manufacturer of masonry units being cleaned.
1. Available Manufacturers or approved equal:
a. Diedrich Technologies, Inc.
b. EaCo Chem, Inc.
c. ProSoCo, Inc.
2.7 MORTAR AND GROUT MIXES
A. General: Do not use admixtures, unless otherwise indicated.
1. Do not use calcium chloride in mortar or grout.
2. Limit cementitious materials in mortar for exterior and reinforced masonry to portland
cement and lime.
3. Add cold-weather admixture (if used) at same rate for all mortar that will be exposed to
view, regardless of weather conditions, to ensure that mortar color is consistent.
B. Mortar for Unit Masonry: Comply with ASTM C 270, Property Specification.
1. For reinforced masonry, use Type N.
2. 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.
C. Epoxy Pointing Mortar: Mix epoxy pointing mortar to comply with mortar manufacturer's written
instructions.
PART 3 - EXECUTION
3.1 INSTALLATION, GENERAL
A. Use full-size units without cutting if possible. If cutting is required, 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.
C. Wetting of Brick: Wet brick before laying if initial rate of absorption exceeds 30 g/30 sq. in. per
minute when tested per ASTM C 67. Allow units to absorb water so they are damp but not wet
at time of laying.
D. Comply with tolerances in ACI 530.1/ASCE 6/TMS 602 and with the following:
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1. 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.
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.
3.2 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.
3.3 MORTAR BEDDING AND JOINTING
A. Lay hollow brick units 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 piers, columns, and pilasters.
3. With webs fully bedded in mortar in grouted masonry, including starting course on
footings.
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 exposed joints slightly concave when thumbprint hard, using a jointer larger than joint
thickness, unless otherwise indicated.
D. Keep cavities clean of mortar droppings and other materials during construction. Bevel beds
away from cavity, to minimize mortar protrusions into cavity. Do not attempt to trowel or remove
mortar fins protruding into cavity.
3.4 ANCHORING MASONRY TO STRUCTURAL MEMBERS
A. Anchor masonry to structural members where masonry abuts or faces structural members to
comply with the following:
1. Provide an open space not less than 1 inch in width between masonry and structural
member, unless otherwise indicated.
2. Anchor masonry to structural members with anchors embedded in masonry joints and
attached to structure.
3. Space anchors as indicated, but not more than 18 inches o.c. vertically and 36 inches
o.c. horizontally.
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3.5 ANCHORING MASONRY VENEERS
A. Anchor masonry veneers to wall framing for building construction and concrete and masonry
backup for trash enclosure with masonry-veneer anchors to comply with the following
requirements:
1. Fasten screw-attached anchors through sheathing to wall framing with metal fasteners of
type indicated. Use two fasteners.
2. Embed connector sections and continuous wire 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 18 inches o.c. vertically and 20 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.
3.6 FLASHING, WEEP HOLES, CAVITY DRAINAGE, 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. Install vents at shelf
angles, ledges, and other obstructions to upward flow of air in cavities, 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
penetrations in flashing 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 weep holes 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 weep holes.
2. Space weep holes 22 inches o.c., unless otherwise indicated.
3. Cover cavity side of weep holes with plastic insect screening at cavities insulated with
loose-fill insulation.
D. Place cavity drainage material in cavities to comply with configuration requirements for cavity
drainage material in Part 2 "Miscellaneous Masonry Accessories" Article.
E. Install vents in head joints in exterior wythes at spacing indicated. Use specified weep/vent
products to form vents.
1. Close cavities off vertically and horizontally with blocking in manner indicated. Install
through-wall flashing and weep holes above horizontal blocking.
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3.7 FIELD QUALITY CONTROL
A. Inspectors: Owner will engage qualified independent inspectors to perform inspections and
prepare reports. Allow inspectors access to scaffolding and work areas, as needed to perform
inspections.
1. Place grout only after inspectors have verified compliance of grout spaces and grades,
sizes, and locations of reinforcement.
B. Testing Agency: Owner will engage a qualified independent testing and inspecting agency to
perform field tests and inspections indicated below and prepare test reports:
1. Payment for these services will be made by Owner.
C. Testing Frequency: One set of tests for each 5000 sq. ft. of wall area or portion thereof.
D. Mortar Test (Property Specification): For each mix provided, per ASTM C 780.
3.8 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 adjacent 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 brick by bucket-and-brush hand-cleaning method described in BIA Technical Notes
20.
3.9 MASONRY WASTE DISPOSAL
A. Waste Disposal as Fill Material: Dispose of clean masonry waste, including excess or soil-
contaminated sand, waste mortar, and broken masonry units, by crushing and mixing with fill
material as fill is placed.
1. Do not dispose of masonry waste as fill within 18 inches of finished grade.
2. 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 04810