I've been experimenting with a light and camera grid in the basement studio made with Makerpipe. The adjustability of the makerpipe connectors give me the flexibility to change the configuration as needed. I did some welding and created a ceiling mounted pipe that serves as a strut to attach the support bars on. I haven't tested the pull-out force required to pull out the vertical struts, but they are quite tight and sturdy and nothing moves at all when you tighten them up. (I recommend installing safety cables just in case.)
The 3/4 pipe is the perfect size for camera and light clamps.