In article
,
RickH wrote:

On Jan 3, 9:52*pm, Josh wrote:
I'm getting ready to set some ceramic tiles on my kitchen wall for a
backsplash. *A few days ago I screwed a couple of very straight 5'
steel bars end to end horizontally along the wall studs, to serve as a
ledge to mount the first row of tiles on. *I was very careful to get
the two bars' ends completely flush with each other and level, using a
good accurate 48" Johnson level. *I checked their level later that
night, and again the next day. *Both bars were dead-on level.
Yesterday I checked their level one more time prior to beginning the
tiling and guess what: they're both off somewhere between an eight and
a quarter of an inch.

I set the level at the same place on the bars each time, and used the
same side of the level. *The bars can't slip....they're still securely
screwed to the studs behind the drywall. *And their ends are still
flush with each other, so I have a good 10' straight edge along the
wall. *But what's up with the changing level?

This house is a 50 year old single story brick veneer, built on a
concrete slab in West Texas. *Is it normal for houses or individual
walls to shift that much from day to day? Maybe due to temperature
variations?


I had a house boat that used to do that all the time.


You must store your grog evenly on both sides of the galley to keep an
even keel.

-Frank

--
Here's some of my work:
http://www.franksknives.com/