On Saturday, September 29, 2018 at 4:52:58 PM UTC-4, pyotr filipivich wrote:
DerbyDad03 on Sat, 29 Sep 2018 09:06:52 -0700
(PDT) typed in rec.woodworking the following:
My daughter saw these benches at a flea market and she wants me to build
one for her:

https://i.imgur.com/5n5kB3K.jpg

Nice.

The bench she wants will be 5' long. The problem I foresee is that she
rents the first floor of an older home (1940) and the wide plank floors
aren't level/flat.

Am I nuts to be wondering if there is a way to build the bench so the
overall look is maintained and the bench is sturdy enough to hold 2-3
adults, but has just enough flex to not rock if the floor has a dip or
sag?

Not really.

Maybe with 2-3 adults it will flex on it's own even if fully glued and
bolted, but what if only one person is sitting on it?

Am I, as usual, overthinking a simple project?

Include a set of wedges / shims.

What purpose would a set of wedges/shims serve?

The bench will be used primarily at a dining room table, which means it will
be moved to slightly different locations, some of which may have dips, humps, etc. That's why I'm asking about "flexibility", allowing the bench to find it's own solid footing.