New answers tagged


In order to provide correct answer, we need to identify the material the beams are made of. Let's focus on two common type of beam materials - steel and concrete. For steel beams, the method provided by @kamran is the way to go. For concrete beams, the two interconnected beams will act in unison, and will influence each other. While every thing may vary, ...


In general, the edge beam (turndown) serves two purposes - prevent the tendency of curling at edges of the slab, and prevent loss of soil under the slab due to erosion. Ideally, the turndown shall be sit on the compacted granular material, that is free to drain, and will not influenced by the freeze-thaw cycles.


If by turndown you mean a bulkhead at the edge of the slab, that is needed to absorb the forces of the post tension jacks, prventing the shear spliting of the slab. The bulkhead is also the support for potential fence posts. A detail would be very helpful.


By definition, bearing stress is the resulting stress between two rigid bodies in contact. It is relevant to concrete only because of its brittle nature, and prone to crack (weak in shear). On the other hand, reinforcing steel does not have such weakness, while it shares/feels the stress, the result rarely be meaningful and detrimental. So for all practical ...

Top 50 recent answers are included