Masonry materials standards described below shall be applicable to all masonry and concrete work. All specifications shall be current editions.
A. Cement:
1. Portland Cement: The specifications for Portland cement shall comply with ASTM C1157 (performance specification for hydraulic cements) current edition.
2. Prepared Masonry Cement For Mortar: The specifications for prepared masonry cement mortar shall comply with ASTM C270 (specification for mortar for unit masonry) and ASTM C207 (specification for hydrated lime for masonry purposes) current edition.
3. Pozzolanic Materials: Pozzolanic materials such as fly ash shall not be substituted for any portion of cement without the knowledge and consent of the building officer. When approved as a replacement for cement, the pozzolanic materials shall be in compliance with ACI 318 (American Concrete Institute standard for building code requirements for structural concrete).
4. Portland Cement, Air Entrained: Air entrained Portland cement shall have not less than 5% and not more than 7% by volume.
5. Portland Blast Furnace Slag Cement: Portland blast furnace slag cement shall be in compliance with ACI 318 (American Concrete Institute standard for building code requirements for structural concrete).
B. Aggregate:
1. Sand: Sand used for concrete shall be clean, hard and sharp, free from harmful materials and graded according to the intended use.
2. Concrete Aggregate: Concrete aggregate shall be in compliance with ACI 318 (American Concrete Institute standard for building code requirements for structural concrete).
3. Masonry Mortar Aggregate: Masonry mortar aggregate shall comply with the requirements of ASTM C270 (specification for mortar for unit masonry).
4. Coarse Aggregate (Crushed Stone Or Gravel): Hard, strong crystalline rock, properly graded, clean and free from shale or other soft material (see ASTM C33, current edition).
5. Lightweight Aggregate For Structural Concrete, Etc.: Concrete aggregate shall be in compliance with ACI 318 (American Concrete Institute standard for building code requirements for structural concrete).
C. Water: Clean and free of deleterious amounts of acids, alkalies, or organic materials.
D. Lime:
1. Hydrated Lime: See ASTM C207, current edition, type S.
2. Quick Lime: Quick lime shall be thoroughly slaked (see ASTM C5 specification for quick lime for structural purposes).
E. Mortar: See ASTM C270, current edition.
F. Brick:
1. Face Brick: See ASTM C216, current edition.
2. Common Brick: See ASTM C62, current edition.
a. Selected hard burned common brick may be used for facing of exterior and interior walls.
b. Salmon or soft brick may be used in interior walls when not exposed, and for backup work.
3. Firebrick: Firebrick shall comply with the specifications of ASTM C27 (specifications of fireclay and high-alumina refractory brick) or ASTM C1261 (specifications for firebox brick for residential fireplaces). Mortar shall comply with the specification of ASTM C207 (specifications for hydrated lime for masonry purposes).
4. Concrete Brick: See ASTM C55, current edition.
5. Secondhand Materials: Masonry units may be reused when thoroughly clean, whole, and conforming to other provisions of this standard, except that the maximum allowable wall heights shall be limited to 50% of that permitted for walls of new masonry units, unless approved by building officer.
G. Structural Hollow Clay Tile:
1. Sound, Kiln Burned Units: Kiln burned structural hollow clay tile shall be free from defects that would impair the strength or permanence of the construction.
2. Load Bearing Tile: Load bearing structural hollow clay tile shall comply with the specification of ASTM C34 (specification for structural clay load-bearing wall tile).
3. Nonload Bearing Tile: Nonload bearing hollow clay tile shall comply with the specification of ASTM C129 (specification for non-load bearing concrete masonry units and related units).
4. Glazed Or Unglazed Facing Tile: Facing tile either glazed or unglazed shall comply with the following standards:
a. ANSI A108.1 (installation of ceramic tile in the wet-set method, with Portland cement mortar).
b. ANSI A108.4 (installation of ceramic tile with organic adhesives or water cleanable tile-setting epoxy adhesive).
c. ANSI A108.5 (installation of ceramic tile with dry-set Portland cement mortar or latex-Portland cement mortar).
d. ANSI A108.6 (installation of ceramic tile with chemical resistant, water cleanable tile-setting and grouting epoxy).
e. ANSI A137.1 (American national standards specification for ceramic tile).
H. Concrete Masonry Unit: Concrete masonry units shall comply with the specifications of ACI 530 (building code requirements for masonry structures), ACI 530.1 (specifications for masonry structures), ASTM C90 (specifications for solid load bearing concrete masonry units), TMS 402 (building code requirements for masonry structures) and TMS 602 (specification for masonry structures). Concrete masonry units shall be sound and thoroughly cured.
I. Stone:
1. Rubble: Rubble and cut stone shall be of a good quality building stone.
2. Cast Stone: Cast stone shall be installed in accordance with the manufacturer's recommendation.
J. Flue Lining: Glazed fireclay and vitrified tile shall be free from crack or other defects and comply with the specification of ASTM C315 (specification for clay flue linings).
K. Glass Block:
1. Standard Unit: Standard unit glass block shall be a minimum thickness of 37/8".
2. Thin Unit: Thin unit glass block shall have a minimum thickness of 31/8" if hollow or 3" if solid.
3. Glass Thickness: The minimum thickness of glass sides for hollow units shall be 3/16".
4. Mortar: Mortar for setting of glass block shall be type S or type N. All surfaces of the glass block that has contact with the mortar shall be coated with polyvinyl butyryl or latex paint.
5. Reuse: The reuse of glass block is prohibited unless approved by the building officer. (Ord. 2008-09-01, 9-24-2008)