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Chapter 21: Masonry
Section BC 2101: General
2101.1 Scope.
2101.1.1 Referenced standards.
2101.2 Design methods.
2101.2.1 Masonry veneer.
2101.3 Special inspection.
Section BC 2102: Definitions and Notations
Section BC 2103: Masonry Construction Materials
Section BC 2104: Construction
Section BC 2105: Quality Assurance
Section BC 2106: Seismic Design
Section BC 2107: Allowable Stress Design
Section BC 2108: Strength Design of Masonry
Section BC 2109: Empirical Design of Masonry
Section BC 2110: Glass Unit Masonry
Section BC 2111: Masonry Fireplaces
Section BC 2112: Masonry Heaters
Section BC 2113: Masonry Chimneys
Section BC 2114: Structural Integrity Requirements
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Section BC 2101: General
2101.1 Scope.
This chapter shall govern the materials, design, construction and quality of masonry.
2101.1.1 Referenced standards.
Where this code makes reference to the nationally recognized standard TMS 402, such standard shall be as modified for New York City in accordance with this chapter.
2101.2 Design methods.
Masonry shall comply with the provisions of TMS 402, TMS 403 or TMS 404, as well as the applicable requirements of this chapter.
2101.2.1 Masonry veneer.
Masonry veneer shall comply with the provisions of Chapter 14.
2101.3 Special inspection.
The special inspection of masonry shall be as defined in Chapter 17, or an itemized testing and inspection program shall be provided that meets or exceeds the requirements of Chapter 17.
Section BC 2102: Definitions and Notations
2102.1 General.
The following terms are defined in Chapter 2:
   AAC MASONRY.
   ARCHITECTURAL TERRA COTTA.
   AREA.
      Gross cross-sectional.
      Net cross-sectional.
   AUTOCLAVED AERATED CONCRETE (AAC).
   BED JOINT.
   BRICK.
      Calcium silicate (sand lime brick).
      Clay or shale.
      Concrete.
   CAST STONE.
   CELL.
   CHIMNEY.
      Factory-built chimney.
      Masonry chimney.
      Metal chimney.
   CHIMNEY TYPES.
      High-heat appliance type.
      Low-heat appliance type.
      Medium-heat appliance type.
   COLLAR JOINT.
   DECORATIVE SHROUD.
   DIMENSIONS.
      Nominal.
      Specified.
   FIREPLACE.
   FIREPLACE THROAT.
   FLUE.
   FLUE, APPLIANCE.
   FLUE GASES.
   FLUE LINER (LINING).
   FOUNDATION PIER.
   GROUT.
   HEAD JOINT.
   MASONRY.
      Glass unit masonry.
      Plain masonry.
      Reinforced masonry.
      Solid masonry.
      Unreinforced (plain) masonry.
   MASONRY UNIT.
      Hollow.
      Solid.
   MORTAR.
   MORTAR, SURFACE-BONDING.
   PRESTRESSED MASONRY.
   RUNNING BOND.
   SPECIFIED COMPRESSIVE STRENGTH OF MASONRY, f 'm.
   STONE MASONRY.
   STRENGTH.
      Design strength.
      Nominal strength.
      Required strength.
   TIE, WALL.
   TILE, STRUCTURAL CLAY.
   WALL.
      Cavity wall.
      Dry-stacked, surface-bonded walls.
      Parapet wall.
   WYTHE.
NOTATIONS.
   db   =   Diameter of reinforcement, inches (mm).
   Fs   =   Allowable tensile or compressive stress in reinforcement, psi (MPa).
   fr   =   Modulus of rupture, psi (MPa).
   f 'AAC   =   Specified compressive strength of AAC masonry, the minimum compressive strength for a class of AAC masonry as specified in ASTM C 1386, psi (MPa).
   f 'm   =   Specified compressive strength of masonry at age of 28 days, psi (MPa).
   f 'mi   =   Specified compressive strength of masonry at the time of prestress transfer, psi (MPa).
   K   =   The lesser of the masonry cover, clear spacing between adjacent reinforcement, or five times d b , inches (mm).
   Ls   =   Distance between supports, inches (mm).
   ld   =   Required development length or lap length of reinforcement, inches (mm).
   P   =   The applied load at failure, pounds (N).
   St   =   Thickness of the test specimen measured parallel to the direction of load, inches (mm).
   Sw   =   Width of the test specimen measured parallel to the loading cylinder, inches (mm).

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