This must be an error. The code requires that phi x Vn be no less than Vn
(1997 UBC 1911.1.1 equation 11-1). The shear friction method is just another
way to compute Vn.
From: Mark Pemberton [mailto:Markp(--nospam--at)lbdg.com]
Sent: Tuesday, February 06, 2001 10:07 AM
Subject: shear friction
Is there a resistance factor for shear friction? The
example problem in the Seismic Design Manual
Volume 3 (concrete shear wall) checks Vn directly
againt Vult for sliding. No phi factor. Is this correct?
Mark Pemberton, P.E..