Hugh issues here Mary, I suspect not many will respond cause you and your
firm need to consider the liability. First as usual a few questions cause I
am not sure I want to suggest anything less than rebuilding but know that
that is not what you are really looking for I will take a poke at something
less than that to start...
What type of structure is it? (brick with wood framed floors?)
How thick are the walls? (3-wythe?)
How tall? (6-stories or less?)
What kind of forces do you realistically expect on the facade?
Could you expect a dry laid back-up wall with 1-inch of the outer brick
mortared in place be expected to stand up?
What caused the deterioration?
That's enough for now........
Please note my direct phone and fax numbers have changed again
Eric Hammarberg
Associate Director of Preservation
Associate
LZA Technology
641 Avenue of the Americas
New York, NY 10011-2014
Telephone: 917.661.8160 (Direct)
Mobile: 917.439.3537
Fax: 917.661.8161 (Direct)
email: [log in to unmask]
-----Original Message-----
From: Mary Brush [mailto:[log in to unmask]]
Sent: Wednesday, July 31, 2002 8:34 PM
To: [log in to unmask]
Subject: dead mortar - what are my options?
Hello, here is a new topic of discussion.
What options can be considered aside from skinning a brick building if it is
determined during an otherwise logical process of grinding and tuckpointing
, that the mortar beyond the 3/4" deep joint is dead, and actually all the
mortar of the backup masonry is quite finished (soft, powdery, no bond, nice
continuous sandy stream when tapped)? In the areas of distress - displaced
brick at step cracks, cracked bricks, loose bricks, settled arches, the
brick is called for rebuild which will now include multi-wythe
reconstruction. At what point do I stop - If I go until sound mortar is
found, the building will be gone. So, the next question is if the exterior
wythe is not showing distress, the previously pointed mortar is intact, yet
I can assume everything behind it is 'dead', - do I bother with grinding
and pointing if it is visually 'not broken,' should I consider
consolidating the backup with something injectable, or can I just leave it
as is?
Mary B. Brush, R.A., AIA
Klein and Hoffman
Chicago, Illinois 60606
--
To terminate puerile preservation prattling among pals and the
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