FWIW: I usually run #4's @ 16" o.c at the girders. The concrete does tend to crack over the girders due to rotation of the beam spans. I usually set them with 1" clear to the top of the slab. Holds the crack reasonably tight
Oddly, I also tend to get small, but noticeable cracks, over the beams where composite deck sheets start and stop.
Anyone else observe this behavior?
The beams the deck sheets are continous over, generally no crack, but the beams were the deck sheets start and stop, I quite often get cracks. I assume its due to rotation of the deck spans. Just an odd thing I've observed.