§ 1613.8.9.4. Drift limitations.  


Latest version.
  • The story drift below the base level diaphragm shall not exceed 0.007 times the story height at strength design force level. The total drift from the base level diaphragm to the top of the foundation shall not exceed 3/4 inch (19 mm). Where the story height or the height from the base level diaphragm to the top of the foundation varies because of a stepped footing or story offset, the height shall be measured from the average height of the top of the foundation. The story drift shall not be reduced by the effect of horizontal diaphragm stiffness.

    (Ord. 2016-0053 § 23, 2016.)

    1613.8.9.5   Distribution of lateral forces.