So, did the plaintiff prevail???
While a contractor is taken to be an "expert," there are standards of typical, reasonable, and accepted techniques that are not codified. If they are not codified, there is latitude. Surprise me. Did a Philly jury say that ACCA should have been followed to the letter? Was the case overturned by a higher court?
For example, ACCA is not regulatory. That aspect of a case often gets it overturned on appeal. This happens all the time in aviation. While the FAA publishes the "airman's information manual" (AIM) which is chock full of typical procedures, it is NOT regulatory in nature. Only the CFR is regulatory where aviation is concerned.