General Construction Specifications
PART 1 - GENERAL
01 ECTION INCLUDES
A. Face brick veneer masonry work, with mortar and accessories.
B. Installation of through-wall flashing.
02 REFERENCE STANDARDS
A. ASTM A82 - Steel Wire, Plain, for Concrete.
B. ASTM A615 - Specifications for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement.
C. ASTM C62 - Specifications for Building Brick (Solid Masonry Units Made from Clay or Shale).
D. ASTM C144 - Aggregate for Masonry Mortar.
E. ASTM C150 - Portland Cement.
F. ASTM A153 - Zinc Coating (Hot-Dip) on Iron and Steel Hardware.
G. ASTM C207 - Hydrated Lime for Masonry Purposes.
H. ASTM C216 - Facing Brick (Solid Masonry Units Made From Clay or Shale).
I. ASTM C270 - Mortar for Unit Masonry.
J. ASTM C404 - Aggregates for Masonry Cement.
K. ASTM C476 - Grout for Reinforced and Non-Reinforced Masonry.
L. ASTM D2240 - Test Method for Rubber Property.
M. ASTM D1056 - Specifications for Flexible Cellular Materials - Sponge or Expanded Rubber.
1.02 QUALITY ASSURANCE
A. Brick shall be obtained from one manufacturer.
B. Qualifications of Workmen: At least one skilled journeyman mason shall be present at all times during brick work to personally supervise work of this section.
1.03 SUBMITTALS
A. Submit the following in accordance with Section 01340:
B. Manufacturer's Product Data: Indicating full compliance with requirements of this section, for each of the following:
1. Brick
2. Each type of masonry unit tie.
3. Mortar color additive.
4. Premixed mortar (data is required if used).
C. Samples:
1. 12" x 12" sample panels showing brick texture and color for each type of face brick required.
2. Mortar samples showing range of available colors.
1.04 DELIVERY, HANDLING, STORAGE
A. Bricks shall be delivered to job-site in accordance with manufacturer's recommendations and Section 01610.
1. Cracked, chipped and spalled brick units shall be immediately removed from job-site.
B. Store and protect brick units in accordance with manufacturer's recommendations and Section 01620.
1. Store units at job-site so that they are off the ground and protect from the elements.
C. Mortar materials and accessories shall be delivered to job-site in original unopened packages bearing manufacturer's labels and in accordance with Section 01610.
D. Store and protect mortar materials and accessories in accordance with manufacturer's recommendations and Section 01620.
1. Maintain temperature and humidity within ranges required by manufacturer's instructions.
2. Maintain cementitious materials and aggregates clean, dry and protected against dampness, freezing and foreign matter.
1.05 JOB MOCK-UP
A. Before brick work is started, construct approximately 4' x 8' mock-up panel for Architect's review of coursing, bond, tooling of joints, range of color and texture of brick and color of mortar.
1. Mock-up panel shall include each type of brick design such as soldier course, reveals, brick projections and precast insert.
B. Mock-up sample approved by Architect will establish minimum standard of quality and workmanship for brick work.
1. Mock-up sample shall remain on project site until completion and approval of brick work.
1.06 PROTECTION
A. Protection During Erection:
1. Maintain protective boards at exposed external corners which may be damaged by construction activities. Provide such protection without damaging completed work.
2. At end of each day's work, cover top of walls with heavy waterproof sheets. Extend sheets 24 inches each side of walls. Secure in place.
3. Cover partially completed structures when work is not in place.
B. Cold Weather Protection for Work in Progress:
1. When air temperature is from 40 degrees F to 32 degrees F, heat sand and mixing water to produce mortar temperature between 40 degrees F and 120 degrees F.
2. When air temperature is from 32 degrees F to 25 degrees F, heat sand and mixing water to produce mortar temperature between 40 degrees F and 120 degrees F. Maintain temperature of mortar on boards above freezing.
3. When daily air temperature is from 25 degrees F to 20 degrees F, completely cover bricks with insulating blankets or similar protection.
a) Use salamanders or other heat sources on both sides of walls under construction. Use wind breakers when wind is in excess of 15 mph.
4. When air temperature is 20 degrees F and below, heat sand and mixing water to produce mortar temperatures between 40 degrees F and 120 degrees F.
a) Provide enclosures and auxiliary heat to maintain air temperature above 32 degrees F.
b) Do not lay masonry units which have surface temperature of 20 degrees F.
5. Remove ice or snow formed on masonry bed by carefully applying heat until top surface is dry to the touch.
C. Cold Weather Protection for Completed Work:
1. Provide protection as required to maintain minimum 32 degrees F for a minimum of 24 hours.
D. Remove all brick determined to be frozen or damaged by freezing conditions.
PART 2 - PRODUCTS
03 BRICK UNITS
A. Face Brick: ASTM C216 quality, Grade SW (with standard core holes), Type FBX.
1. Do not use cored brick with net cross-sectional area less than 75% of gross area in the same plane or with core holes less than 3/4" from any edge.
2. Where the design calls for projecting brick, face brick without core holes must be used to prevent core holes from being exposed in completed brick work.
3. Exposed core holes in the completed brick work are not acceptable.
4. Texture and Color: To match Belden Brick No. 145A.
5. Size: Modular, 7-5/8" x 3-5/8" x 2-1/4" nominal.
2.02 MORTAR MATERIALS
A. Portland Cement: Type I, ASTM C150 quality.
1. Color: Gray
2. For color consistency in mortar, cement shall be from a single source. Do not change source or brand of cement during the course of the work.
B. Masonry Cement: Not permitted.
C. Hydrated Lime: ASTM C207 quality, Type S.
D. Mortar Aggregate: ASTM C144 quality, standard masonry type; clean, dry and free of foreign matter.
1. For color consistency in mortar, sand shall be from a single source. Do not change source during the course of the work.
E. Aggregate for Masonry Grout: ASTM C404 quality.
F. Water: Clean, free of deleterious materials which will not impair strength or bond.
G. Calcium Chloride: Is not permitted.
2.03 MORTAR COLOR
A. Color: Gray.
2.04 MORTAR MIXES
A. Mortar for Loadbearing and Non-Loadbearing Walls: Comply with ASTM C270 Proportion Specifications for following mortar type:
1. Type S/1800 psi at 28 days.
B. Pointing Mortar: Comply with ASTM C270 Proportion Specifications for following mortar type:
1. Type S/1800 psi at 28 days.
2.05 GROUT MIXES
A. Fine Grout for Reinforced Masonry:
1. Portland Cement: 1 part
Hydrated Lime: 0 to 1/10 part
Fine Aggregate: 2-1/4 to 3 parts
2. Mix with mechanical mixer with sufficient water to the desired consistency in accordance with ASTM C476 Proportion Specifications.
B. Course Grout for Reinforced Masonry:
1. Portland Cement: 1 part
Hydrated Lime: 0 to 1/10 part
Fine Aggregate: 2-1/4 to 3 parts
Coarse Aggregate: 1 to 2 parts
2. Mix with mechanical mixer with sufficient water to the desired consistency in accordance with ASTM C476 Proportion Specifications.
B. Hand Mixing: Not acceptable.
2.02 MASONRY UNIT TIES
A. General: Masonry unit ties specified below shall be of quality complying with the following and manufactured by Masonry Reinforcing Corp. of America (Wire-Bond), Charlotte, North Carolina.
1. Straps and Wire Units: Fabricated of steel conforming to ASTM A82 requirements.
B. For Brick Veneer at Cast-in-Place Concrete:
1. Dovetail anchors, 12 gauge, with triangle wire tie; conforming to ASTM A82.
2. Triangular Tie Size: To lay in solid mortar bed up to minimum 1 inch from masonry face. Carefully review details for proper size.
3. Finish: Hot-dipped galvanized after fabrication, ASTM A153-Class B2. Mill galvanized is not acceptable.
C. For Brick Veneer With Concrete Blocks:
1. As specified in Section 04222.
2.03 MISCELLANEOUS ACCESSORIES
A. Wick and Weep Ropes: Cotton, 3/8" diameter.
B. Sealant and Backer Rods: Exterior quality specified in Section 07920.
1. Color: To match mortar color.
C. Preformed Control Joints: Extruded PVC with 70 durometer harness conforming to ASTM D2240, designed for use in control joints in solid or cavity wall construction to provide resilient resistance to cracking under stress of expansion and contraction.
1. Size and Configuration: As required for compliance with drawings.
D. Reinforcing Bars: Deformed steel, ASTM A615 quality, Grade 60.
1. Size: As indicated on drawings.
E. Thru-Wall Flashing: Specified in Section 07650, installed as part of the work of this section.
F. Compression Joint: 1/4" thick by 3" wide neoprene sponge with adhesive on one side for placing horizontally beneath relieving angles, ASTM D-1056.
G. Cleaning Agent: Type as recommended by brick manufacturer.
2.04 SUBSTITUTIONS
A. The following manufacturers are acceptable only after compliance with requirements of this section:
1. AA Wire Products Co/Chicago, Illinois.
2. Dur-O-Wal Inc/Arlington Heights, Illinois.
3. Heckmann Building Products Inc/Chicago, Illinois.
4. National Wire Products Inc/Baltimore, Maryland
PART 3 - EXECUTION
04 GENERAL
A. Mortar:
1. Thoroughly mix mortar and grout ingredients in quantities needed for immediate use in accordance with ASTM C270.
2. Do not use anti-freeze compounds to lower freezing point of mortar.
3. If water is lost by evaporation, retemper within two hours of mixing. Do not retemper mortar after two hours of mixing.
3.02 INSTALLATION OF ACCESSORIES
A. Install all accessories in accordance with manufacturer's published instructions.
B. Masonry Anchors and Reinforcement:
1. Anchor Spacings for Metal Studs: 16" o.c. vertically, 16" o.c. horizontally, unless otherwise indicated on drawings.
2. Reinforce masonry openings greater than 1'-0" wide with horizontal joint reinforcement placed in two horizontal joints approximately 8" apart immediately above the lintel and below sill. Extend reinforcement a minimum of 2'-0" beyond jambs of openings except at control joints.
3. Corners and Intersections: Fully reinforce every sixth mortar joint.
C. Flexible Flashing: Install in accordance with Section 07650.
3.03 INSTALLATION OF BRICK
A. General:
1. Do not proceed with brick work until unsatisfactory conditions have been corrected.
2. Do not use cracked, chipped and spalled brick units.
3. Use dry bricks. Frozen and wet bricks are NOT acceptable.
4. Cutting: Use motor-driven masonry saws to cut brick units to provide straight and true, unchipped edges.
B. Built-In Work:
1. Verify items built-in by other trades for this work are properly located and sized.
2. As brick work progresses, build-in the items supplied by other trades plumb and true to lines and levels.
3. Cut and fit brick work as required for the work of other trades.
4. Do NOT build-in organic materials which will be subjected to decomposition or deterioration.
C. Tolerances:
1. Maximum variation from brick unit to adjacent brick unit is 1/32 inch.
2. Maximum variation from vertical to horizontal building lines is 1/4 inch in 10 feet.
3. Maximum variation from cross sectional thickness of walls is plus or minus 1/4 inch.
D. Mortar Joints and Coursing:
1. Establish lines, levels and coursing. Protect from disturbance.
E. Joint Size: 3/8" unless otherwise indicated.
1. Type of Bond: Running bond.
2. Type of Joint: Concave.
3. Make vertical and horizontal joints equal and of uniform thickness.
4. Lay brick in full bed of mortar properly jointed with other work.
5. Place brick units in accordance with lines and levels indicated on drawings.
6. Fully bond intersections, external and internal corners.
7. Buttering corners of joints, deep or excessive furrowing of mortar joints is not permitted.
8. Hold 1/4" space between jambs and sills of windows, doors and other openings for sealant.
9. Do not shift or tap brick after mortar has taken initial set. Where adjustment must be made, remove mortar and replace with new mortar.
F. Projecting Brick Courses:
1. Use solid brick units for projecting brick courses.
2. Provide exterior quality sealant on horizontal surface (top) of projected brick courses, in accordance with Section 07920.
G. Weep Holes:
1. Weep Hole Spacings: 24" o.c. horizontally. Above lintels over exterior windows, doors and other openings, place weep holes at 16" o.c.
2. Provide weep holes by omitting mortar in the head joints, at soldier courses omit only the bottom 1/3 of the joint.
H. Expansion/Control and Compression Joints: Unless shown otherwise, locate joints as indicated below.
1. Do not continue horizontal masonry reinforcing across control joints.
2. Between Brick and Structural Members: Keep 1/2" control joint free of mortar and other rigid materials.
3. Place joints 4 feet to 10 feet from each exterior corner of building.
4. Place joints approximately every 50 feet o.c. in uninterrupted walls.
5. Place joints at abutment of wall and columns.
6. Install joints at locations where wall height or thickness changes by more than 20%.
7. Place control or expansion joints in supporting structure.
8. At major openings place joints at end of lintels upward and below at ends of sills downward.
9. For openings less than 6 feet wide place joints on one side of openings.
10. For openings more than 6 feet wide place joints at both sides of openings.
11. Keep expansion/control joints free of mortar and other rigid materials.
12. Place compression joints to underside of relief angles supporting masonry.
I. Cavity Air Spaces:
1. Do not let mortar fall into cavity air spaces and plug up weep holes.
2. Keep cavity air spaces clean of mortar by catching mortar over-run as brick work progresses.
3.04 POINTING AND CLEANING
A. As the work progresses, wipe off excess mortar and smears.
B. Point or replace defective mortar to match adjacent work.
C. After mortar is thoroughly set and cured, clean a 20 square foot sample area as follows. Obtain Architect's acceptance of sample cleaning BEFORE proceeding to clean the remainder of brick work.
1. Dry clean sample area to remove large particles or mortar using wood paddles and scrapers. Use non-metallic tools for cleaning operation.
2. Presoak brick wall by saturating with water to flush off loose mortar and dirt.
3. Scrub brick wall with stiff brush and a non-acidic solution of type recommended by brick manufacturer which will not harm brick and adjacent surfaces.
4. Remove cleaning solution, dirt and mortar crumbs with pressurized clean water.
5. Cleaning the brick with acid-type cleaning solution is NOT permitted.
D. Properly clean joints scheduled for sealant.
END OF SECTION
