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Re: DESIGN / ANALYSIS TREATMENT OF "HAIRPIN CONNECTIONS"

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Robert Rogers wrote:
> 
>  I HAVE SEEN (ON SEVERAL DRAWINGS) THE USE OF BENT REINFORCING STEEL
>  (USUALLY BENT AT 135 DEGREES) WHICH IS PLACED IN THE TOP OF A CONCRETE
>  PIER (JUST BELOW THE COLUMN BASE PLATE AND AROUND THE BACKSIDE OF THE
>  ANCHOR BOLTS) AND TIES THE PIER TOP INTO THE CONCRETE SLAB ON GRADE.  THIS
>  IS A TYPICAL DETAIL FOR PRE-ENGINEERED METAL BUILDING WHERE THE LATERAL
>  THRUST LOAD IS TRANSMITTED INTO THE SLAB-ON-GRADE SUCH THAT IT HELPS
>  RESIST ANY LATERAL FORCES.  IF ANYONE KNOWS OF A GOOD DESIGN/ANALYSIS
>  REFERENCE FOR THIS CONNECTION PLEASE LET ME KNOW.  (I'M ASSUMING ITS JUST
>  A MATTER OF DEVELOPING SUFFICIENT TENSILE STRENGTH IN THE REBAR TO
>  TRANSMIT THE THRUST LOAD).
> 
R.R.
Your assumption is correct, it is only a matter of providing tensile
steel in the concrete to resist the thrust!!

Donn Wooldridge  RA/SE\
Phoenix, AZ