Case Study: Fire Protection Heads

Whats the situation of this case?
A three story building office is soon to be turnover (two weeks). However, after reviewing the punch list it was discover that the subcontractor installed different type of sprinkler head and within all three floors the subcontractor design it.
After looking at the case carefully it’s no doubt the General Contract fault, since he/she supervises whats documented. At this point it is not necessary to change the sprinkler heads since they work properly, but if it fails safety inspection, then it will be mandatory to change them.