with my customer, the other engineer and the contractor doing the
installation and his engineer. Nothing final has been decided but it
appears they will try to use the option with no rebar in the concrete.
The other engineer feels he can argue that the steel post embedded in
the concrete provides the required "reinforcing" for the concrete, even
though it is in a medium seismic zone. No skin off my nose and I still
get paid. Thanks again.
Gary
On 10/28/2011 1:26 PM, David Finley wrote:
> FDOT has details for both: http://www.dot.state.fl.us/rddesign/rd/rtds/10/5205.pdf
>
> David Finley
>
>
>
>
>
> -----Original Message-----
> From: Gary L. Hodgson and Assoc. [mailto:design@hodgsoneng.ca]
> Sent: Friday, October 28, 2011 9:03 AM
> To: seaint@seaint.org
> Subject: Highway Sound Barrier Walls
>
> Listers,
>
> I'm currently in a debate with another engineer regarding drilled piles
> or caissons for highway sound wall posts. I want to provide steel posts
> embedded a short length into augered concrete piles with a steel rebar
> cage around the perimeter of the pile with 76mm (3") of cover. The
> other engineer maintains that a rebar cage is not necessary if the
> galvanized steel post is extended to near the bottom of the pile.
>
> My position is that, due to the augering of the hole and filling in with
> concrete, it is likely that dirt will fall into the concrete or that
> uneven drilling or air pockets could lead to weakening or cracking and,
> hence, loss of cover.
>
> I want the rebar cage since our code states that, in seismic zones,
> non-plain concrete shall not be used for structural members where
> ductility is required.
>
> Anybody have any thoughts or opinions on this issue?
>
> thanks,
> Gary
>
>
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