E, I can not imagine going 38' into the building without encasement. There is no chance that would be allowed here.
As far as demo guys cutting into it that can always be a problem.
I had to help repair a 4" conduit that was cut by a concrete saw, it was one of eight sets of 600 kcmils that feed a 3000 amp 480 switch gear.
The operator of the saw was OK but it knocked out a neighborhood.
