"Fr@nk" wrote in message
Thanks. Now, do you see any problem if my basement door's threshold
overhangs the location of the expansion strip (which would really prevent
me
from adding anything to the top of the expansion strip after
installation)?
Like this:

CURRENTLY:
------
| Basement door threshold (overhang)
------
X |
X | Basement concrete wall
X |


AFTER INSTALLING STRIP:
------
| Basement door threshold (overhang)
------
X | |X|
X | |X| Expansion joint strip outside basement concrete wall
X | |X|

My basement sliding door's threshold overhangs the basement slab slightly.
Is that the way it should be?

That would be OK. The expansion joint is maybe half inch thick. You can
place it so that the top of the material is the same as the top of the
concrete when poured. If a little of the concrete gets on top of it, no
problem, it may even help make a seal.