There was a stringent "no trespassing policy" for the new part of the FEL building.
The design of the computer room was only discussed at the level of requirements.
It was only a month before the relocation to the new computer room took place that we were allowed
to visit the new computer room. Several problems were found, including a very
major one: there were no water cooling facilities. The CYBER required water cooling
to get rid of over half of its generated heat.
The new computer room, however, was equipped with an air treatment and air conditioning system that was designed for two CYBER's, many PDP's, VAXes and I/O equipment. As a safety factor was taken into account, a factor 5 overcapacity in air cooling was available.... The construction department had a tough couple of weeks to go, in order to get water cooling into that room, otherwise the whole relocation scheme had to be changed. They were able to finish that job in time. Relocation went smoothless except for another problem. The computer floor was lower than the corridor level in order to have a raised floor for running all cables. The designer had overlooked that we required a raised floor as well in the adjacent communications room. Actually, the constructures had put extra concrete in to remove the raised floor there. The only solution was to build a raised floor, add a ramp and make a hole in the wall to run the cables from the under the one raised floor to under the other.