Hi! I have an existing steel structure on top of which another steel structure is being added at the roof level. In some cases I have new columns that will be supported by existing columns, and to connect the two, I'm going to weld the new column to it's baseplate, which is then welded to the...
Andriver, you are right. It is a fillet weld all around the beam onto the column web.
KootK, that's what I eventually did....had them install the plates.
Thanks All!
Thanks everyone for the responses and advice. It sounds like I really do have a lot of work to do. I was sure it was just a matter of a quick calculation to design/check the welded connection for the moment. I think AISC has an example of that but I cannot remember where.
Buggar, nothing was...
I designed a cantilever beam with a moment connection to a column web using a web plate for shear and bolted flange plates for the moment. However, the contractor just welded around the beam end to the column - no web plate, no flange plates, no bolts! I now need to check this to ensure that the...
Thanks all.
KootK, thanks for the sketches. From a design or construction perspective, does it matter which way the column is oriented? I know that this way, the 'N' for my column base plate is not the same 'N' used for the beam web checks.
Why would orienting the columns this way mean that I...
Thanks KootK. I have attached a sketch of the detail. I did the checks for the beam web crippling and web yielding. In both cases, stiffeners were not required. But there is one other thing. On one side of the W14x34 beam that supports the column, there is another beam framing into the web. Does...
Ok. Thanks all. Really appreciate the ideas. How do you determine how far apart the stiffeners should be? These stiffeners are perpendicular to the beam web, correct?
I have a structural steel column that will be supported directly on a beam flange. I know that this is not an uncommon situation. What do I need to check for? Buckling of the beam web? Required spacing of stiffeners etc? Is there an AISC design guide or similar that shows how to detail that...
The bars (in some beams) are definitely in a very bad way (deep rust penetration). The same for some slab areas. As I mentioned before, the client does not want to use any cathodic protection even though I explained that there would be accelerated corrosion of rebar due to the halo effect. They...
Thanks All. I have attached a couple of photos showing the damage to some beams as suggested by BAretired. I hope the links work. What do you think? Most of the beams are continuous and are monolithic with the concrete slab, which in some areas is also damaged.
Hokie66, I have already...
I am trying to find the best way to repair severely deteriorated concrete beams supporting a concrete deck in a marine environment. The beams are 20" deep by 18" wide and about 19' long. In some cases, the bottom steel is exposed and badly corroded and some of the stirrups are also exposed...
