From: David B Merrick <mrkgp(--nospam--at)pacbell.net>
Date: Wed, 21 Mar 2001 16:51:27 -0600
Disregard the previous equation on the perforated shearwall. (I switched
The equation is
Co = 100/(B(1-3A)+3A)
Reference table 2305.3.7.2
Let A= the ratio of maximum opening height to the wall height.
That?s the value across the top of the chart.
Let B= percent of full height sheathing to full length of wall.
That?s the left column on chart.