8" x 84" x 40' Concrete Beam/Wall Top Restraint
8" x 84" x 40' Concrete Beam/Wall Top Restraint
(OP)
I am completing the structural design of the precast concrete components for a building. In one area I have two 40' long beams that support a lower roof at the bottom of the beam and an upper roof at the top of the beam. The problem I am having is the Engineer of Record has indicated that the roof between the top of these beams is to be comprised of conventional wood truss without any sheathing (1x4 strapping only). I am concerned about this and I am looking for opinions. The factored bending moment in the beam is around 390k*ft.
Thanks
Thanks





RE: 8" x 84" x 40' Concrete Beam/Wall Top Restraint
If he says no, then ask why not. See what he says.
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: 8" x 84" x 40' Concrete Beam/Wall Top Restraint
Brad
RE: 8" x 84" x 40' Concrete Beam/Wall Top Restraint
Usually this isn't a concern for concrete beams if the width of the beam is > Span/50 which in your case is 9.6 inches of width. (see ACI section 10.4)
RE: 8" x 84" x 40' Concrete Beam/Wall Top Restraint