Chimney Construction

AIR provides the following codes for chimney construction:

  While Coverage C (content) is not supported for most of the 200-series construction class codes, it is, supported for Inland Transit (construction code 259) and for some other construction codes, such as tanks and pipelines. For the full list of supported combinations, refer to the "Const. & Occ. Combin." tab in each model supplement.


Construction Code




Masonry Chimneys

Masonry chimneys over 30 feet high


Concrete Chimneys

Reinforced concrete chimneys over 30 feet high


Steel Chimneys

Steel chimneys over 30 feet high



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Touchstone 4.0 Updated June 13, 2018