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This practice covers the minimum requirements for installing clay flue lining for residential concrete or masonry chimneys. Footings shall be constructed of concrete or solid masonry and the foundation shall be placed with respect to adjacent structures to minimize the possibility of damage. Both the concrete footings and foundations shall conform to local building codes. Flue liners shall be installed using refractory mortar in such a manner as to minimize ledges or steps within the flue passageway and shall be surrounded by masonry on all sides with a separation not exceeding the flue liner wall thickness. Materials used for chimney construction shall comprise of the following: flue linings, refractory mortar, concrete block, brick, mortar, firebrick, and natural stone. Chimney connection shall be made by either a metal or clay thimble while the chimney caps shall be made of precast or cast-in-place concrete, metal, or stone caps. Combustible materials shall be permitted to abut the masonry chimney sidewalls; wherein, the minimum air space clearance between the interior or exterior masonry chimneys and the combustible materials shall be met.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
Significance and Use
1.1 This practice covers the minimum requirements for installing clay flue lining for residential concrete or masonry chimneys.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C24 Test Method for Pyrometric Cone Equivalent (PCE) of Fireclay and High Alumina Refractory Materials
C27 Classification of Fireclay and High-Alumina Refractory Brick
C55 Specification for Concrete Building Brick
C90 Specification for Loadbearing Concrete Masonry Units
C99 Test Method for Modulus of Rupture of Dimension Stone
C129 Specification for Nonloadbearing Concrete Masonry Units
C170 Test Method for Compressive Strength of Dimension Stone
C199 Test Method for Pier Test for Refractory Mortars
C216 Specification for Facing Brick (Solid Masonry Units Made from Clay or Shale)
C270 Specification for Mortar for Unit Masonry
C315 Specification for Clay Flue Liners and Chimney Pots
C652 Specification for Hollow Brick (Hollow Masonry Units Made From Clay or Shale)
C896 Terminology Relating to Clay Products
ICS Number Code 91.100.15 (Mineral materials and products)
UNSPSC Code 72151904(Chimney construction and maintenance service)