# The length of a 2 x 4

 Forum topic by lew posted 04-01-2008 01:05 AM 1491 views 0 times favorited 24 replies
 lew12382 posts in 3931 days 04-01-2008 01:05 AM Topic tags/keywords: walls ceiling height OK, I just returned from substitute teaching in the Building Constructions area at the local vocational school. The regular teacher is out for the week and I am taking his place. I thought I knew my way around the subject- at least a little. The teacher left me the subject matter he wanted taught- wall framing. Having built a couple of walls in the past, I knew the names of the wall parts and the construction details of corners, “Tees”, openings and headers. I explained that for a 2×4, 8 foot, studded wall, we normally use precuts that are 92 5/8” long. A student asked why 92 5/8” and I told her that the length was calculated to allow for the thickness of the bottom plate and the double top plate- to create an 8 foot ceiling. She did a quick calculation and said that the ceiling would be 97 1/2”- which is over 8’. Even allowing for an 1/2” dry wall ceiling and a 3/4” floor, the ceiling height doesn’t come out to 96”. I told the kids I would try to find the answer for them. Could someone please explain this to me, so I can provide them with the correct answer? Thanks, Lew -- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.