[Gogar]

Those cracks are there because the house moved like . . . 1/8". In 65 years. Not bad!



I have a foundation/basement very similar to yours. Seems like you're already aware that you're not really EVER going to fix moisture problems (if there are any) from the inside of the house. Like you mentioned, if you 'really' want to moisture proof the foundation it needs to be done from outside-in.

With that in mind the fix you do to the cracks is really only cosmetic, IMO. As far as the pipes coming through the cement well . . . That's a mystery! Has the cement been altered or patched around that area? Like . . maybe it was a modification or something?

I'd be tempted to leave it until you do some detective and find the other end of those pipes.