Most corrugated pipe installs seem to be around the perimeter of the house. I have identified that I have slight water flow through the middle of my house most likely due to slope and /or the gutter jettison. My gutters go into the ground with corrugated pipe, but don't know where they go after that. This has led me to wanting to get into crawl space to install a sump pump/french drain system as I am not sure if the gutter is indeed the issue or not. I have created a diagram, but not sure if I should connect a catch basin with pipe to connect the "Signs of Water Flow " in the middle of the house pic as most corrugated pipe installs I have researched show to go on the perimeter of the house. Pic can be found here

We are about to start framing our basement (first timers when it comes to large projects). I had basically settled on building the walls in place because absolutely n.o.t.h.i.n.g. in our entire house is square or level. This is especially true in our basement. One of the walls to be built runs fairly close to the floor drain and will be built over sloping concrete. This brings me to my question. I have come across articles that state one should absolutely not build in place. Theoretically it should be easier to build the walls on the floor and lift into place. However I am not sure how I would go about remedying the difference in ceiling height across the length of the floor. I really don't want to shim, as that doesn't seem like it would build a stable wall at all. Does anyone have an educated opinion on the matter? (As my username would suggest, my expertise lies elsewhere). Thanks!