Wood Construction


AIR provides the following codes for wood construction:

Construction Code




Wood Frame (Modern)

Wood frame (modern) structures tend to be mostly low rise (one to three stories, occasionally four). Stud walls are typically constructed of 2x4 or 2x6 inch wood members vertically set 16 or 24 inches apart. These walls are braced by plywood or by diagonals made of wood or steel. Many detached single and low-rise multiple family residences in the United States are of stud wall wood frame construction.


Light Wood Frame

Light wood frame structures are typically not built in the United States but would be found in other countries, such as Japan. In Hawaii, this classification would include single wall (studless) construction framed with light timber trusses.


Masonry Veneer

A wood-framed structure faced with a single width of non-load-bearing concrete, stone, or clay brick attached to the stud wall.


Heavy Timber

Heavy Timber structures typically have masonry walls with heavy wood column supports, and floor and roof decks are 2-3 inch tongue-and-groove planks.


Lightweight Cladding

Non-structural cladding and linings (e.g., fiber cement, plywood) used in lightweight construction that uses timber or light gauge steel framing as the structural support system.


Currently supported only for locations in Australia and New Zealand.


Hale Construction

Indigenous Hawaiian construction.


Supported only for the AIR earthquake and tropical cyclone models for Hawaii.



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Touchstone V3.0 Updated December 01, 2016