Steel columns embedded in concrete
Steel columns embedded in concrete
(OP)
I'm doing an analysis of an existing free-standing carport structure. The designer used 2-8"x2 1/4"x 14GA. CEE's as columns supporting a shallow slope roof. The wind uplift load will be very large and I'm concerned that the way he attached the columns won't provide enough strength. He embedded the columns 2'-4" into a 4'-6" deep and 2' diameter concrete footing. Can anyone provide me with a reference regarding the strength of steel columns embedded in concrete, both for tension and moments? I am also concerned with earthquake forces as this structure is located in California. The same columns support equally sized beams but are only connected by screws (no welds, etc to transfer moments). Anyone know of a way to achieve a moment connection between these channel type steel beams?






RE: Steel columns embedded in concrete
You'll probably find that your application will work fine with that depth of embedment. I would be more concerned about corrosion at the interface for the light gage material.
RE: Steel columns embedded in concrete
Pratt, A. and Alexander, S
Plunge Columns
Concrete, April 2003, pp 8-12
The Concrete Society, UK
Ron, as a side issue, aluminium reacts poorly in contact with concrete. What do you use to protect the aluminium components?
RE: Steel columns embedded in concrete
Ron, bond strength equals 10% of tensile strength of CONCRETE?
RE: Steel columns embedded in concrete
http://
RE: Steel columns embedded in concrete
bruinboy....10% is conservative for this application though it cannot be compared to the bond achieved in rebar.