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// CODE SNIPPET

R1003.15.1 Option 1

Residential Code 2018 of Kansas > 10 Chimneys and Fireplaces > R1003 Masonry Chimneys > R1003.15 Flue Area (Masonry Fireplace) > R1003.15.1 Option 1

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Round chimney flues shall have a minimum net cross-sectional area of not less than one-twelfth of the fireplace opening. Square chimney flues shall have a minimum net cross-sectional area of one-tenth of the fireplace opening. Rectangular chimney flues with an aspect ratio less than 2 to 1 shall have a minimum net cross-sectional area of one-tenth of the fireplace opening. Rectangular chimney flues with an aspect ratio of 2 to 1 or more shall have a minimum net cross-sectional area of one-eighth of the fireplace opening. Cross-sectional areas of clay flue linings are shown in Tables R1003.14(1) and R1003.14(2) or as provided by the manufacturer or as measured in the field.

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