*The post incorrectly references the 2005 SDPWS. The post should reference the 2008 SDPWS for the 2009 IBC. The content of the equation and sections referenced, however, is correct.
The 2006 IBC requires hold-downs only if the dead load moment is not sufficient to prevent uplift due to overturning moments on the wall (IBC section 2305.3.7), except in the case of perforated shear wall (PSW) ends: the code requires hold-downs sufficient to resist a "minimum" uplift force per...