// CODE SNIPPET
R407.3 Structural Requirements
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The columns shall be
restrained to prevent lateral displacement at the bottom end.
Wood columns shall be not less in nominal size than 4 inches
by 4 inches (102 mm by 102 mm). Steel columns shall be not
less than 3-inch-diameter (76 mm) Schedule 40 pipe manufactured
in accordance with ASTM A53 Grade B or approved
equivalent.
Exception: In Seismic Design Categories A, B and C, columns
not more than 48 inches (1219 mm) in height on a
pier or footing are exempt from the bottom end lateral displacement
requirement within under-floor areas enclosed
by a continuous foundation.
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