I spent quite a bit of time trying to figure this out today so I'm going to share and you can ignore me...I *think* you have to use the fully mobilized skin friction to calculate the downdrag force on a drilled shaft, even for the service limit state condition where we do not necessarily consider the skin friction to fully mobilize. Thanks for listening. My brain hurts. If I'm wrong, you can tell me. I can take it. #morecoffee

@Foxthorn I have no idea what you just said, but I hope you get more coffee and you got the problem all figured out. #WasThatEnglish?

@GrandmaJ lol if nothing else I got an answer and it's probably conservative so no one at the DOT is going to complain. They'll tell me if they think I've really flubbed it up. Tomorrow is a new adventure.