You might misunderstand it somewhere.Yea but you had also mentioned you do the design before bid and before the contractor is chosen and before they provide you with the submittal. So how do you do the design before obtaining the submittal and knowing dimensions? It makes no sense to me.
Contractor provide the bid with all cost and profit they calculated.
After they get chosen. Then Contractor provide me the submittal, electrical set, and Cad for the electrical room. Then I do the EPR drawing.
I don't worry about equipment's dimension, because the room is big enough to fit the equipment, all I need to do is move the equipment in the room, to create a room layout that fit all equipment per electrical set.
As Curt Swartz said @#10, contractor like to pick the equipment by themselves.Personally, not really. I just dot my i's and cross my t's and to get what I want and know will work would require me to get submittals first. You must have great contractors then because they would hit me with a change order if they tell me they can make the room bigger. Also I always have to modify a lot of stuff in electrical rooms just to make space
Also, contractors often don’t like to follow the design because they know how to make things easier for themselves.
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In a word, You work for building owner, I work for contractor. If building owner ask to you to get the submittal, then you have no choice.
To me contractor provide me the submittal.