Column Shear!!
Column Shear!!
(OP)
Hello:
This was a question i asked earlier in one of the thread but did not get much replies.My question was in cae of columns subjected to bending moment+axial load, we design these according to our interaction curve(check for Pu and Mu), but we never make any check for shear.Just like in beams it is imperative to check for shear capacity why not in columns .The columns too are subjected to horizontal shear.We provide ties but it may not be that these ties may adequately serve the above purpose.
This was a question i asked earlier in one of the thread but did not get much replies.My question was in cae of columns subjected to bending moment+axial load, we design these according to our interaction curve(check for Pu and Mu), but we never make any check for shear.Just like in beams it is imperative to check for shear capacity why not in columns .The columns too are subjected to horizontal shear.We provide ties but it may not be that these ties may adequately serve the above purpose.






RE: Column Shear!!
RE: Column Shear!!
tabz
RE: Column Shear!!
Shear loads are normally taken into account for the entire structure or column/beam system. The wind load is usually the primary horizontal/shear load and the entire structural system works in unison to resist this loading. This loading is most often resisted by shear walls or bracing that distributes the horizontal loading to the columns' foundations.
Basically, shear should be examined on a case-by-case basis. Oftentimes this "shear" is resisted by the entire system and not one or two columns.
RE: Column Shear!!
An emphatic "YES" is the answer to your question, shear must be checked and the tie size and spacing should satisfy shear also particularly in earthquake prone areas the story shear is all concentrated in the column bottoms and maust be satisfied.
RE: Column Shear!!
Cheers
RE: Column Shear!!
RE: Column Shear!!
Your question centers around what is "typical practice" for engineers. I would suggest that many older engineers checked columns for a while and found that it never came close to controlling as the phiVc was high....so they gradually stopped checking it.
Technically, you MUST check it. With experience, you should be able to get a feel for when it would be a controlling factor.