Assumed Area of Steel In Existing Concrete Beam
Assumed Area of Steel In Existing Concrete Beam
(OP)
I'm doing a remodel on an existing structure. It has a 14" x 21" concrete beam spanning 18'. The building was built in the early 1950's. I know that was when working stress design (WSD) was being used. I don't have as built drawings, so I'm trying to figure out the minimum area of steel based on WSD from that era. Trying to see if I can add additional tributary area to the beam.
Thanks
Thanks
RE: Assumed Area of Steel In Existing Concrete Beam
I wouldn't want to stake my professional career on an assumption that they used minimum reinforcing.
RE: Assumed Area of Steel In Existing Concrete Beam
Thanks for the input.
RE: Assumed Area of Steel In Existing Concrete Beam
For the longest time, I kept a metal tag with the reinforcing mark number on it... I found this in an old reinforced concrete beam that had been constructed about 1920. The rebar was twisted for strain hardening and bond... and all the steel was bundled together complete with the metal tag. There were four bars neatly tied together as one; don't be too surprised about what you find.
Dik
RE: Assumed Area of Steel In Existing Concrete Beam
BA
RE: Assumed Area of Steel In Existing Concrete Beam