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INCLUDE IN 04220 Concrete Masonry Units
PART 1 - GENERAL
1.01 Section Includes
1.02 Related Sections
B. Full-size units as samples for verification of ground face masonry units selected.
C. Material certificates for ground face units, signed by manufacturer, certifying that ground face units comply with the requirements.
D. Submit manufacturer's product literature for each ground face color selected.
E. Material test reports from a qualified independent testing agency, indicating and interpreting test results relative to compliance of ground face units with requirements indicated.
F. Qualification data for manufacturer of ground face units specified in the "Quality Assurance" Article to demonstrate their capabilities and experience. Include lists of completed projects with project names and addresses, names and addresses of architects and owners.
1.05 Quality Assurance
B. Preconstruction Testing: Employ and pay a qualified independent testing agency to test ground face units for strength, absorption, and moisture content per ASTM C140.
C. Single-Source Responsibility: Obtain ground face concrete masonry units from one source and by a single manufacturer for each color required.
D. Mockup: Prior to installing ground face concrete unit masonry, construct 4' x 4' sample wall panels of ground face concrete masonry, including an application of FBP-707 Ground-Face Concrete Masonry Acrylic Sealer to verify selections made under sample submittals, and to demonstrate aesthetic effects of materials and execution using materials indicated for final unit of work.
E. All ground face concrete masonry units shall be factory-ground. Units not ground in the factory will not be acceptable.
F. Ground face concrete masonry units shall specifically conform to paragraph 7.3.1 of ASTM C90 with regard to imperfections (chips and cracks).
1.06 Delivery, Storage and Handling
B. Store ground face concrete masonry units on elevated platforms, under waterproof cover, and in a dry location to prevent their deterioration or damage due to moisture, temperature changes, contaminants, corrosion, and other causes. If units become wet, do not install until they are in an air-dried condition.
C. Handle ground face concrete masonry units with extreme care to avoid chippage and breakage.
PART 2 - PRODUCTS
2.01 Ground Face Concrete Masonry Units
B. Basis of Design: Provide HIll Country Stone Units as manufactured by Featherlite Building Products Corporation, 508 McNeil Road, Round Rock, Texas 78681 (512) 255-2573.
PART 3 - EXECUTION3.01 Laying Ground Face Concrete Masonry Units
B. Cut all ground face units with a motor-driven saw, using diamond or abrasive blades.
C. Take ground face units from multiple pallets for blending.
D. Align ground face units level, plumb and true with uniform concave tooled 3/8-inch-wide joints. Scored units shall be tuckpointed and tooled with a concave jointer to match head and bed joints.
E. All exterior ground face units shall be laid using mortar with integral water repellent admixture "Dry-Block Admixture" at the rate recommended by W.R. Grace & Company.
F. Flashing, Weep Holes and Control Joints: Install flashing, weep holes and control joints as specified herein and indicated on the drawings.
G. Cover walls each day after installation to keep open wall protected and dry.
H. During installation, keep ground face masonry units clean daily using brushes, burlap, etc.
Please Note: The initial factory applied coating is a part of the coating system. During the cleaning process, some or all of the initial coating will be stripped from aggressive scrubbing and/or misuse of acidic cleaners. The result will be an uneven appearance in color and sheen. Adhering to the following field coat products and specifications will ensure the desired results.
INCLUDE IN Division 7 Water Repellents
PART 2 - PRODUCTS
2.01 Water Repellents
B. Ground Face Concrete Masonry Acrylic Sealer (Field Applied): FBP-707 as distributed by Featherlite Building Products Corporation, 508 McNeil Road, Round Rock, Texas 78681, (512) 255-2573.
3.01 Field Coat Application
FAILURE TO FOLLOW ALL OF THE ABOVE RECOMMENDATIONS MAY RESULT IN UNACCEPTABLE APPEARANCE AND PERFORMANCE. Take durability and ease of care to a new level with Featherlite's Effective Anti-Graffiti System, with a 10-Year Warranty. Ask your Featherlite representative for details.
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