Depends on how crazy the job is, like if you have a second party watching the GC.
Review the spec's of the job and be sure that they picked the right box for the job. Most floor boxes are more for electronics, Television, TV cable, VOP, or internet and the power is usually a nasty second aspect IMO!
Be sure to check the Architectural Finish Schedule drawing for what is the type material that will be used on the floor! Exact carpet, exact type; exact finished depth of and type of carpet, or PVC tile, or if it marble or ever a stone tile.
Be sure to note all this in a letter to the GC that your setting this box to said drawing, sheet number and seal date. Be sure to note that this same sheet has not been revised since the drawing package came out!
Have the GC check the finished elevation with a transit. I wouldn't use jet line getting it level
because it spins and not as accurate as string.
What I'm trying to say is that make sure the box and the pipe runs out will work.
Last job, designer put a knee high junction box out of floor box to a column space that wouldn't work because it would have had to remove structural bearing members wrapping the column.
So review that you distribution of the implied circuit runs are correct. Watch the type of wiring and be sure not to mix ?low voltage? with power circuit if a various junction box if used.
Over strap all pipes around junction box the concrete guy will not care, even if pipe is buried deep under foundation rock ask the GC to inform you of the pour date to be there!
