The allowed deflection of the flooring shall not exceed 1/350 of the beam length, that is, the length of the deflection shall not exceed 10 mm per 3.5 m of the beam length. If the span is large, and the cross section to create the necessary strength is not enough, you can install vertical columns and build additional bearing walls. At installation of additional columns or bearing walls use special punched fixture.
In places of contact came down with the bearing elements, you need to lay insulating materials, which, for example, include a damper tape. You can use several layers of rubber or sheet rubber, which will also serve as waterproofing.
Perforated bar support
Often they began to use special brackets made of perforated metal, thanks to which the installation of the beams can be performed end-to-end with a supporting wall, assembled joints of crossbars and short bars. (more…)