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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H Add two No. Toothings shall be distributed uniformly throughout the wall, and shall aggregate in vertical cross-sectional area at least 15 percent of the total yms area of the lining. Where epoxy coated t,s are used, lap length shall be increased by 50 percent.
The length, width and height dimensions of the prisms shall comply with the requirements of ASTM C This table does not cover all requirements, nor does it cover all aspects of the indicated requirements.
» N.Y. New York City Administrative Code C21 – – MasonryLawServer
Latex-modified portland cement ascd mortars in which latex is added to dry-set mortar as a replacement for all or part of the gauging water that are used for the installation of ceramic tile shall comply with ANSI A Where openings in bearing walls greater than 24 inches mm in height occur, ties shall be provided at each side of the opening that extend and are anchored in the masonry above and below the opening.
The lining in chimneys shall not be considered as taking either compression or tension stresses. Alternate chimney designs for high-heat appliances constructed with radial brick shall be permitted subject to the approval of the commissioner.
The minimum net cross-sectional area of the flue shall be determined in accordance with Figure Such responsibilities shall then be assumed by the owner of the previously constructed building.
Specifications for Masonry Structures (ACI 530.1-92/ ASCE 6-92/TMS 602-92)
An approved chimney for removing the products of combustion from fuel-burning, high-heat acl producing combustion gases in excess of 2,?
At the time of prestress, the compressive strength of the masonry tm equal or exceed f'[ mi ] which shall be less than or equal to f'[ m ]. 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.
The units shall be of whole, sound materials and free from cracks and other defects that will interfere with proper laying or use. Load-bearing masonry structures shall be reinforced to obtain a continuous system of vertical and horizontal ties. The measured dimension of a masonry unit or element. The surfaces of units intended to be in contact with mortar shall be treated with a polyvinyl butyral coating or latex-based paint.
Corbeling of masonry units shall not leave unit cores exposed to the inside of the smoke chamber.
Masonry chimneys are permitted to be constructed as acci of the masonry walls or concrete walls of the building. The exterior air intake shall not be located within the garage, attic, basement or crawl space of the dwelling nor shall the air intake be located at an elevation higher than the firebox.
Specifications for Masonry Structures (ACI / ASCE /TMS )
Since the Code is written as a legal document and the Specification as a master specification required by the Code, the two commentaries present background details, committee considerations, and research data used to develop the Code and Specification. The net free area of the arrestor shall not be less than four times the net free area of the outlet of the chimney flue it serves. Mechanical splices shall be classified as Type 1 or 2 according to Section The outlet shall be closable and designed to prevent burning material from dropping into concealed combustible spaces.
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 minimum clearance of 4 inches mm shall be provided between the exterior surfaces of a concrete or masonry chimney for medium-heat appliances and combustible material.
No salt or other chemicals for the purpose of lowering the freezing temperature of water shall be permitted in the mortar mix. Masonry walls that are not part of the lateral force resisting system shall be isolated from the structure so that the ascee and lateral forces are not imparted to these elements. All welding shall conform to AWS D1.
Masonry fireboxes shall be constructed of solid masonry units, hollow masonry units grouted solid, stone or concrete. An existing masonry wall may be used in the alteration or extension of a building provided that it meets the requirements of this code. Load-bearing masonry structures shall be reinforced to meet all of the asde of this section. For chimneys greater than 40 inches mm wide, two additional No. The firebox lining shall be encased with solid masonry to provide a total thickness at the back and sides of not less than 8 inches mmof which not less than 4 inches mm shall be of solid masonry or concrete.
The use of empirical design of masonry shall be limited as noted in Section 5. The exterior air outlet is permitted to be located in the back or sides of the firebox chamber or within 24 inches mm of the firebox opening on or near the floor. For the design of the connections, the transverse shear force and the axial tensile force need not be considered to act simultaneously.
Low- density cementitious product of calcium silicate hydrates, whose material specifications are defined in ASTM C However, reinforcement tns for gravity, seismic or wind forces or for other purposes may be regarded avi satisfying part of, or the whole aace, these requirements.
A mixture to bond concrete masonry units that contains hydraulic cement, glass fiber reinforcement with or without inorganic fillers or organic modifiers and water. For grouted masonry, the grout meets one of the following requirements: Some of the topics covered in the Code are: The lining shall be carried up vertically, with a maximum slope no greater than 30 degrees 0. Whenever the quantity f'[ m ] is under the radical sign, the square root of numerical value only is intended and the result has adce of pounds per square inch psi Mpa.