muttley000
MTS Sufferer!
I did a 270 gallon sump using the pour method a few years ago and it has, and continues to perform fine. I am planning a basement build taller than the ceiling and hard come the the same conclusion Wille did. Pour the ends, router the rabbets, and assemble in place. Even though I won't be able to tilt it to a perfect 45 on the corner pours, I will still be able to get plenty of fillet contact by going a little deeper.