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Re: "Delta Truss"?

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I do not know if it is suitable in this situation but,I have utilized
precast Double Tees as walkways in many WWTP's. I take a typical 8' wide
section and cut it to 5 feet wide. I put handrail 4 feet apart(centered in
the web).
 This serves as an economical way to span long distances.

Randy Russ
Russ Engineering Group, Inc.
Baton Rouge, La.

-----Original Message-----
From: KSP <lvtakp(--nospam--at)>
To: seaint <seaint(--nospam--at)>
Date: Thursday, May 04, 2000 8:51 AM
Subject: "Delta Truss"?

>We have been asked to design an elevated walkway at a
>sewage treatment plant.  The span is about 55' and the
>walkway is about 3' wide.  The new structure will be
>replacing a structure consisting of steel joists which
>are badly deteriorated.  The Owner would like to use
>stainless steel.  We are considering designing a
>triangular shaped truss out of pipes - similar to what
>I see for some highway sign structures.  (Someone here
>called it a delta truss but I am not familiar with
>that name.)  Do any of you have experience with these
>types of trusses for this type of application?  Any
>things to watch out for?  Any published design
>Thanks for your help,
>Ken Peoples, P. E.
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