Design of Column Shear Lugs.
Design of Column Shear Lugs.
(OP)
I'm looking at the use of stub W section 'lugs' welded to the baseplate of larger W shapes to improve the transfer of high lateral loads (100 kips approx). This is in conjunction with high uplift forces on the column (80' tall building with little dead load). Uplift also in the magnitude of 100 kips. Also info on the design of 'grout pockets' to accept the lug.
Can anyone provide a source for literature, papers, pdf file, etc. (LRFD preferred, but ASD info OK, too).
Dik
Can anyone provide a source for literature, papers, pdf file, etc. (LRFD preferred, but ASD info OK, too).
Dik






RE: Design of Column Shear Lugs.
neffers
RE: Design of Column Shear Lugs.
Sounds like a good idea though.
The design of conventional plate shear lugs is covered in DG1 and is rather straight forward. I'm sure the concepts could be adapted for your application.
Watch out for DG1, second edition. There are more errors in it than in the movie Major League.
RE: Design of Column Shear Lugs.
Are these columns going into piers, grade beams, ftgs, caissons? Is this a braced frame bulding?
I have a pretty slick detail that goes along with a schedule (for braced frames), but it won't work on isolated piers. If you have some length of concrete (like grade beams), it works very nicely. It's probably less expensive than blocking out for, and providing, shear lugs.
RE: Design of Column Shear Lugs.
Let us in on it!!
RE: Design of Column Shear Lugs.
Dik
RE: Design of Column Shear Lugs.
RE: Design of Column Shear Lugs.
Check your email. I attached the detail I was talking about and another that goes with it (especially if you have high uplift forces like this).
RE: Design of Column Shear Lugs.
Easy to install.
No messing around with shear lugs which are not very often installed correctly!
RE: Design of Column Shear Lugs.
My detail is similar, but I use rebar welded to the embed plate because it's often hard to get headed studs to work with a long, relatively thin member (such as a grade beam) with App. D. I have an embed that take the shear through shear friction, and the column anchor rods take the uplift (lapping with additional reinforcement as required).
RE: Design of Column Shear Lugs.
RE: Design of Column Shear Lugs.
RE: Design of Column Shear Lugs.
RE: Design of Column Shear Lugs.
Michael.
Timing has a lot to do with the outcome of a rain dance.
RE: Design of Column Shear Lugs.
RE: Design of Column Shear Lugs.
RE: Design of Column Shear Lugs.