I thought that drain was the end , the discharge point. If it goes beyond, great, no worries.
Palum, how old is the house? new? Old? cracking probably mean settling, those are definitely load spans, if the house is new, the post supporting said beams- may be inadequate- or the post in the basement is not placed properly, etc. lots of possibilities, it could be just settling, without looking cannot be entirely sure, only way to check is to look. The floor below, measure where the posts are -if you can- and check that the load is being transferred correctly-preferably straight down, if there is no post-or foundation- there check for doubled or tripled joists to transfer the load down correctly into the foundation/ground like it should.
if the house is >15years old, then it is probably settling.