Historic Concrete Reinforcement cca. 1908
Historic Concrete Reinforcement cca. 1908
(OP)
I'm working on a building constructed in 1908 (the historic Univ. of Chicago campus) and I have encountered a strangely called out rebar in the floor concrete T-sections:
3-1/2"x3"x7.8# T bar. (Graphically shown as a rectangular plate.)
Does anyone have any idea how to figure out the actual steel area OR what this rebar actually looks like?
Thanks!
3-1/2"x3"x7.8# T bar. (Graphically shown as a rectangular plate.)
Does anyone have any idea how to figure out the actual steel area OR what this rebar actually looks like?
Thanks!






RE: Historic Concrete Reinforcement cca. 1908
As for what the "rebar" looks like, the nomenclature is a "T" bar, so I would assume that the shape is just that, a "T".
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: Historic Concrete Reinforcement cca. 1908
Do you mind sharing as to how you calculate the 3/8" plate? What dimensions are you using to arrive at this thickness. I am not following based on your justification given above...
Thanks,
RE: Historic Concrete Reinforcement cca. 1908
The equation becomes 6.25tX490/144 = 7.8, or t = .36
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: Historic Concrete Reinforcement cca. 1908
Garth Dreger PE
AZ Phoenix area
RE: Historic Concrete Reinforcement cca. 1908
I haven't seen flat bars twisted before, but I know that they used to twist square bars.
Michael.
Timing has a lot to do with the outcome of a rain dance.
RE: Historic Concrete Reinforcement cca. 1908
Thanks, all!
RE: Historic Concrete Reinforcement cca. 1908
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RE: Historic Concrete Reinforcement cca. 1908
I've gotten papers from you before and again, you come thru. Thanks! The paper is a keeper...
RE: Historic Concrete Reinforcement cca. 1908