2010 Residential Code of NYS: I have a two story wood framed single family dwelling. On a framing inspection I noticed 2 x 4 studs spaced at 16" oc for the first floor walls. The floor joists for the second floor did not stack directly above the studs. The joists were offest by 6-8" from the studs. The second floor studs did not stack over the floor joists below. The wall studs are capped by a double top plate. I have never noticed this type of construction detail but I am not certain if it is a code violation or just a mistake in the wall placement and layout. the mechanical installation was not impacted ny this technique. Thanks in advance.