Mortar. Mortar for use in masonry construction shall conform to ASTM C and Articles and A of TMS. /ACI /ASCE 6, except for mortars . Specifications for masonry structures: ACI /ASCE /TMS with ASTM references. Imprint: Detroit: American Concrete Institute, c 5/TMS , and its accompanying masonry specification, ACI /ASCE 6/TMS New provisions and revisions of existing standards for masonry design.
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This chapter shall govern the materials, design, construction and quality of masonry. Masonry shall comply with the provisions of one of the following design methods in this chapter as well as the requirements of Sections through Masonry designed by the allowable stress design provisions of Section Masonry designed by the allowable stress design method shall comply with the provisions of Sections and Special inspection during construction shall be provided as set forth in Section The construction documents shall show all of the items required by this code including the following:.
Provisions for dimensional changes resulting from elastic deformation, creep, shrinkage, temperature and moisture. Specified compressive strength of masonry at stated ages or stages of construction for which masonry is designed, except where specifically exempted by this code. Aic of anchorage of masonry to structural members, including the type, size zci location of connectors.
The minimum level of testing and inspection as defined in Chapter 17, or an itemized testing and inspection program that meets or exceeds the requirements of Chapter The construction documents shall describe in sufficient detail the location, size and construction of masonry fireplaces.
The thickness and characteristics of materials and the clearances from walls, partitions and ceilings shall be clearly indicated. The masonry fireplace shall comply with the provisions of Section The tjs words and terms shall, for the purposes of this chapter and as used elsewhere in this code, have the meanings shown herein. Masonry made of autoclaved aerated concrete AAC units, manufactured without internal reinforcement and bonded together using mts or thick-bed mortar.
Plain or ornamental hard-burned modified clay units, larger in size than brick, with glazed or unglazed ceramic finish. The area of the surface of a masonry unit that aece in contact with mortar in the plane of the joint. The area delineated by the out-to-out specified dimensions of masonry in the plane under consideration.
The area of masonry units, grout and mortar crossed by tmms plane under consideration based tmms out-to-out specified zsce. Low- density cementitious product of calcium silicate hydrates, whose material specifications are defined in ASTM C A horizontal grouted element within masonry in which reinforcement is embedded. A masonry unit made of clay or shale, usually formed into a rectangular prism while in the plastic state and burned or fired in a kiln.
A masonry unit having the approximate shape of a rectangular prism and composed of inert aggregate particles embedded in a hardened cementitious matrix. A projecting part of a masonry wall built integrally therewith to provide lateral stability. A building stone manufactured from portland cement concrete precast and used as a trim, veneer or facing on or in buildings or structures.
A primarily vertical enclosure containing one or more flues used to remove hot gases from burning fuel, refuse, or from industrial processes to the outside atmosphere.
An approved chimney for removing the products of combustion from fuel-burning, high-heat appliances producing combustion gases in excess of 2,? C measured at the appliance flue outlet see Section An approved chimney for removing the products of combustion from fuel-burning, low-heat appliances producing combustion gases not in excess of 1,?
C under normal operating conditions, but capable of producing combustion gases of 1,? C during intermittent forces firing for periods up to 1 hour. Temperatures shall be measured at the appliance flue outlet. An approved chimney for removing the products of combustion from fuel-burning, medium-heat appliances producing combustion gases between ? An opening to the bottom of a grout space of sufficient size and spacing to allow the removal of debris. Vertical longitudinal joint between wythes of masonry or between masonry and backup construction that is permitted to be filled with mortar or grout.
Maximum compressive force resisted per unit of net cross-sectional area of masonry, determined by the testing of masonry prisms or a function of individual masonry units, mortar and grout. A mechanical device for securing two or more pieces, parts or members together, including anchors, wall ties and fasteners. A listed partial non-combustible enclosure for aesthetic purposes that is installed at the termination of a venting system that surrounds or conceals the chimney or vent cap.
The specified dimension plus an allowance for the joints with which the units are to be laid. Thickness is given first, followed by height and then length. The dimensions specified for the manufacture or construction of masonry, masonry units, joints or any other component of a structure.
A hearth and fire chamber or similar prepared place in which a fire may be made and which is built in conjunction with a chimney. A passageway within a chimney or vent through which gaseous combustion products pass. The passage s within an appliance through which combustion products pass from the combustion chamber of the appliance to the draft hood inlet opening on an appliance equipped with a draft hood or to the outlet of the appliance on an appliance not equipped with a draft hood.
A system or material used to form the inside surface of a flue in a chimney or vent, for the purpose of protecting the surrounding structure from the effects of combustion products and for conveying combustion products without leakage into the atmosphere. An isolated vertical foundation member whose horizontal dimension measured at right angles to its thickness does not exceed three times its thickness and whose height is equal to or less than four times its thickness.
A plastic mixture of cementitious materials, aggregates, and water, with or without admixtures, initially produced to pouring consistency without segregation of the constituents during placement, or the equivalent of such mixtures, conforming to ASTM C That form of grouted masonry construction in which certain designated cells of hollow units are continuously filled with grout. That form of grouted masonry construction in which the space between the wythes is solidly or periodically filled with grout.
Vertical mortar joint placed between masonry units within 350.1 wythe at the time the masonry units are laid. The vertical distance from the foundation wall or other immediate support of such wall to the top of the wall. A built-up construction or combination of building units or materials of clay, shale, concrete, glass, gypsum, stone or other approved units bonded together with or without mortar or 5530.1 or other accepted method of joining.
Masonry composed of various sized rectangular units having sawed, dressed or squared bed surfaces, properly bonded and laid in mortar. Ashlar masonry laid in courses of stone of equal height for each course, although different courses shall be permitted to be of varying height.
Masonry in which the tensile resistance of the masonry is taken into consideration and the effects of stresses in reinforcement are neglected. Ashlar masonry laid in courses of stone set without continuous joints and laid up without drawn patterns. When composed of material cut into modular heights, discontinuous but aligned horizontal joints are discernible. Masonry construction in which reinforcement acting in conjunction with the masonry is used to resist forces.
Masonry consisting of solid masonry units laid contiguously with the joints between the units filled with mortar. Masonry in which the tensile resistance of masonry is taken into consideration and the resistance of the reinforcing steel, if present, is neglected.
Brick, tile, stone, glass block or concrete afi conforming to the requirements specified in Section A building unit larger in size than a brick, tjs of burned clay, shale, fire clay or mixtures thereof. Aic building unit or block larger in size than 12 inches by 4 inches by 4 inches mm by mm by mm made of cement and suitable aggregates.
A masonry unit whose net cross-sectional area in any plane parallel to the load-bearing surface is less than 75 percent of its gross cross-sectional area measured in the same 62. A masonry unit whose net cross-sectional area in every plane parallel to the load-bearing surface is 75 percent or more of its gross cross-sectional area measured in the same plane.
A plastic mixture of approved cementitious materials, fine aggregates and water used to bond masonry or other structural units. A mixture to bond concrete masonry units that contains hydraulic cement, glass fiber reinforcement with or without inorganic fillers or organic modifiers and water. Masonry in which internal stresses have been introduced to counteract potential tensile stresses in masonry resulting from applied loads.
An assemblage of masonry units and mortar with or without grout used as a test specimen for determining properties of the masonry. Masonry composed of roughly shaped stones fitting approximately on level beds and well bonded. Masonry composed of roughly shaped stones laid without regularity of coursing but well-bonded and fitted together to form well-divided joints.
Rough or ordinary rubble. Masonry composed of unsquared field stones laid without regularity of coursing but well-bonded.
» N.Y. New York City Administrative Code C21 – – MasonryLawServer
The placement of masonry units such that head joints in successive courses are horizontally offset at least one-quarter the unit length. Detailed plain masonry shear wall. A masonry shear wall designed to resist lateral forces neglecting stresses in reinforcement, and designed in accordance with Section Intermediate reinforced masonry shear wall. A masonry shear wall designed to resist lateral forces considering stresses in reinforcement, and designed in accordance with Section Ordinary plain masonry shear wall.
Prestressed masonry shear wall. A prestressed masonry shear wall designed to resist lateral forces considering stresses in reinforcement, and designed in accordance with Section Ordinary reinforced masonry 66 wall. Minimum compressive strength, expressed as force per unit of net cross-sectional area, required of the masonry used in construction by the construction documents, and upon which the project design is based.
Whenever the quantity f'[ m ] is under the radical sign, the square root of numerical value only is intended asde the result has units of pounds tme square inch psi Mpa.
The placement of masonry units in a bond pattern 5300.1 such that head joints in successive courses are vertically aligned.
2014 N.Y. New York City Administrative Code 28-701.2C21 – – Masonry
For the purpose of this code, requirements for stack bond shall apply to masonry laid in other than running bond. Stone masonry composed of rectangular units having sawed, dressed or squared bed surfaces and bonded by mortar. Strength of a member or cross section calculated in accordance with these provisions before application of any strength-reduction factors.
Mortar for use in construction of AAC unit masonry with joints 0. A hollow masonry unit composed of burned clay, shale, fire clay or mixture thereof, and having parallel cells. A vertical element with a horizontal length-to-thickness ratio greater than three, used to enclose space.
A wall built of masonry units or of concrete, or a combination of these materials, arranged asxe provide an airspace within the wall, and in which the inner and outer parts of the wall are tied together with metal ties. A wall built of a combination of two or more masonry units bonded together, one forming the backup and the other forming the facing elements.
A wall built of concrete masonry units where the units are stacked dry, without mortar on the bed or head joints, and where both sides of the wall are coated with a surface-bonding mortar. A wall ace of masonry units so arranged as to provide an airspace within the wall, and in which the facing adi backing of the wall are bonded together with masonry units.
Concrete masonry units shall conform to the following standards: Clay or shale masonry units shall conform to the following standards: Structural clay tile for nonstructural use in fireproofing of structural members and in wall furring shall not be required to meet the compressive strength specifications.
Stone masonry units shall conform to the following standards: