So the long term deflections would be the creep factor (lets say 2) times 20% the dead load deflections? Or you're saying the prestress only affects the instantaneous deflection, and the long term deflections should be the creep factor times the 100% of the dead load deflections.
Im having a discussion with some other engineers about the long term deflections on a prestressed block and beam slab. (See image attached)
They prestress the joists (4") , put on the blocks and then pour the concrete (4"-8").
I think the prestress force creates an upward moment that...
