Baz, I had a similar experience related to the replacement of OR lights and the addition of some articulated equipment booms. The vendor showed a floor plan with circles drawn to show the area the equipment could cover but not the volume of space the equipment would consume in the room. As it turned out, the proposed placement of the equipment and where it mounted on the ceiling meant that it couldn't be used in the primary location. If the boom was positioned where they wanted it during use, they couldn't get the patient in the room. And it couldn't be place on the other side of the table to allow the patient to come in because they'd have to take the equipment over the patient once they were on the table and that is prohibited. The vendor wasn't happy because they had to go back and rework things and the project manager was at first upset because of the delay in the project and the need to schedule another meeting. She figured out though that it saved the hospital a pile of money, though.