-- would not drill holes in shop studs
-- using a 2x4 or maybe a pair glued together, drill a series of holes
in them; screw this to the wall studs, but also with it resting on the
floor directly
-- the OD of 3/4" EMT is just under 1" (larger than 7/8ths)
-- the OD for 1/2 pipe is 0.84 (via google), so just under 7/8ths
-- would black or galv be better?