From: Roger Turk <73527.1356(--nospam--at)compuserve.com>
Date: Thu, 3 May 2001 18:51:43 -0400
Just some thoughts:
Thought 1. When I was doing graduate work, I also worked part-time for a
structural engineer whose office was on the east side of the second floor of
a 2-story office/retail building. The second floor walls were porcelainized
metal panels and as soon as the sun came over the mountains, those panels
started singing along with snap, crackle and pop. The singing continued all
morning and I expect that it occurred again when the sun went down. Your
desert climate is like ours, where it is not unusual to have a 35 degree
temperature difference between night lows and day highs.
Thought 2. With wood exterior walls and metal stud interior non-bearing
walls, the wood can shrink or has shrunk. If the interior wall/ceiling
intersection was not detailed to accommodate this movement, the metal studs
may be buckling (load-duration relationship).
Thought 3. Is the roof constructed with wood trusses or CFS trusses. Attic
spaces are beginning to get hot (damned hot) this time of the year. Is there
insulation between the top plate of the metal stud walls and the attic?
Thought 4. Have you personally heard the noises? I recently was at a house
(not a new house) where the owner was concerned about noises she heard. We
were sitting in the dining room having coffee when she suddenly said, "Hear
that?" Yes, I heard it, but what I heard was normal thermal movement ---
nothing to get excited about.
Thought 5. (I forgot.) <G>
Roger Turk, P.E.(Structural)
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