Saturday, October 29, 2011

Fwd: Highway Sound Barrier Walls

-------- Original Message --------
Subject: Highway Sound Barrier Walls
Date: Fri, 28 Oct 2011 09:02:59 -0400
From: Gary L. Hodgson and Assoc. <>

-------------------------------------------------------------------------- Your following message has been delivered to the list at 06:03:03 on 28 Oct 2011. -------------------------------------------------------------------------- Sorry. Had to correct a typo in the last paragraph  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,  plain concrete shall not be used for structural members where  ductility is required.  Anybody have any thoughts or opinions on this issue?  thanks, Gary   ******* ****** ******* ******** ******* ******* ******* *** *   Read list FAQ at: *  *   This email was sent to you via Structural Engineers  *   Association of Southern California (SEAOSC) server. To  *   subscribe (no fee) or UnSubscribe, please go to: * * * *   Questions to Remember, any email you  *   send to the list is public domain and may be re-posted  *   without your permission. Make sure you visit our web  *   site at:  ******* ****** ****** ****** ******* ****** ****** ********