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RE: 1997 UBC ICBO seminar-wall anchorage

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1997 UBC 1632.2 has specific provisions for using expansion anchors and
chemical anchors at seismic connections, so their use is permitted. I was at
a seminar recently where this was discussed, and the interpretation was that
the wall anchors just need to go into the wall enough so the stress cone
engages reinforcement at the top of the wall.

-----Original Message-----
From: Jeff Smith [mailto:smthengr(--nospam--at)]
Sent: Friday, October 22, 1999 8:38 AM
To: seaint(--nospam--at)
Subject: 1997 UBC ICBO seminar-wall anchorage

I went to the part 1 seminar yesterday. Very worth while seminar, I wish I
could make part II. Regarding wall anchorage of masonry and concrete, it was
stated that for zone 3 and 4 you have to use 3x members at the wall anchors,
2 or 3 2x's are not acceptable. I would think that a certain size and number
of multiple 2x's should be acceptable. Also, The speaker implied that
epoxied wall anchors may not be allowed since they are not hooked around the
wall reinforcement. (section 1633.2.8 and 1605.2.3) This section refers to
embedded wall *straps*. Why this would be any different than an embedded
rod, I do not know. Any thoughts on this?


Jeff Smith