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RE: Terracotta Behaviour

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From: 	NRoselund[:nroselund(--nospam--at)aol.com]
Sent: 	Wednesday, August 12, 1998 4:34 AM
To: 	seaint
Cc: 	ITSEKSON SASHA
Subject: 	Re: Terracotta Behaviour

Thor,

Is the terra cotta you are dealing with hollow clay tile?  the following
comments are based on the assumption that it is............
...................Evaluation and design using the UCBC is appropriate (the UCBC even
says so).  Evaluation of mortar quality by the UCBC procedures should be based
on net mortar-joint  dimensions, not on gross wall thicknesses.  Testing of
mortar quality using the procedures of UBC Standard 21-6 requires bearing pads
of steel plates set in gypsum mortar to distribute jack loads so that the jack
doesn't break through the cell walls.  Effective wall anchors can be made
using all-thread rods embedded in epoxy -- it takes some creative detailing
and careful workmanship to develop epoxy keys into the cells -- but they give
good test results.  Also look into using the Cintek Anchor System
(613-225-3381) (they are Canadian folks) -- I've come across this since my
last hollow clay tile project, and it looks very good......................

Also, check out Covert Operations anchors (562) 498-7426 that have worked pretty good with hollow clay tile.  They are also often willing to do the site specific testing of their anchoring system for you.

Regards,

Sasha Itsekson, PE