Yes. If it is, its used in high-rise buildings as the flooring. It is laid across steel I-beams with re-bar and cement poured over it. Kinda hard to tell from the blurry picture.
Might want to think about the pin again.
http://www.dieselplace.com/forum/63-gm-diesel-engines/7-duramax-first-generation-2001-2004-lb7/442198-crank-pin-sheared.html