On Thu, 6 Aug 2009 09:48:53 -0400 "WILTON" <wilt...@nc.rr.com> wrote:
> The tubes are likely along the neutral axis of each beam; beam is in > compression above the neutral axis and tension below the neutral axis. > Concrete along the neutral axis contributes little to the structure; > therefore can be eliminated to make structure lighter. The web in an > I-beam, for example, can be very thin and can have holes in it; it's > main purpose is to hold the upper and lower flanges in place; again, > upper flange in compression, lower flange in tension and near neutral > along nearly (generally) the midpoint between them. The web does, though, hold the two flanges together by absorbing the shear between them. Craig _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
