Please refer to this site for information regarding welded moment frames.
Also on http://seaint.org/ home page on the upper right hand corner there is
a lot of information on this.
From: Joseph R. Grill [SMTP:jbotch(--nospam--at)micron.net]
Sent: Wednesday, May 17, 2000 11:35 AM
Subject: Moment Frame Connections
It seems this subject may have been discussed before, but I
am in quite a discussion at the moment on this subject. My
question is: Under what conditions, if any, are welded up
moment frame connections allowed in a seismic zone 3 or 4.
What restrictions, qualifications, requirements for use? I
work in seismic zone 3, somewhat isolated and have been
using bolted moment frames since Northridge. I am still
noticing welded up moment connections, and I'm wondering
what they know that I don't to be able to do this.
Joseph R. Grill, P.E.