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RE: Security Engineering: steel cable security barriers[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: <seaint(--nospam--at)seaint.org>
- Subject: RE: Security Engineering: steel cable security barriers
- From: "Eric Ober" <eober(--nospam--at)holbertapple.com>
- Date: Tue, 9 Nov 2004 10:01:36 -0500
I designed a cable system recently (maybe 6 to 8 months ago) using the Presswalla article. I also recall some problems with the text and the equations. My recollection is that the equations were accurately derived (conclusion reached after checking the derivation with some mechanics texts) but that the units were inconsistent in the definition of terms (ie feet and inches mixed without conversions).
In a message dated 11/6/2004 1:52:39 PM Eastern Standard Time, Maureen.Burke(--nospam--at)arnold.af.mil writes:
I'm not sure I completely understand your application, but you might try looking at the CASS system from Trinity Industries. The website is www.highwayguardrail.com
Also, the article in Concrete International by Presswalla mentioned by someone else is very good, with the caveat that there are some typos. I remember reading it when it first came out and not being able to understand it. I read it again, after I had designed several barrier cable systems and realized that some of the equations are wrong. I don't remember exactly what the problem is, but I think maybe some of the Greek symbols did not get printed correctly. It also seems like there was a paragraph missing somewhere, or maybe some paragraphs were out of order.
It is a good article, it just requires some thinking to figure out.
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