Return to index: [Subject] [Thread] [Date] [Author]

Re: RE: Cable Problem

[Subject Prev][Subject Next][Thread Prev][Thread Next]
A good reference for cables could be found in the
Structural Steel Designer's Handbook 3 rd edition by
R.L. Brockenbrough and F.S. Merrit, McGraw-Hill,
Chapter 15.15

In addition to this reference Robot 95 or Robot Millenium
is a good software for cables.

Hope this helps,

Desi J. Kiss, P.E.
Washington Group International
Irvine, Ca. 92692

----- Original Message -----
From: "Brian K. Smith" <smithegr(--nospam--at)bellsouth.net>
Date: Wednesday, September 5, 2001 7:14 am
Subject: RE: Cable Problem

> From Table 12, Case 5, Roark's Formulas for Stress and Strain, 6th 
> Edition
> W = Load @ mid point
> P = Tension in Cable
> Theta = end rotation
> 
> Tan (theta) - sin (theta) = W/(2EA) or if theta < 12degrees, theta =
> (W/(EA))^(1/3)
> 
> P = W /(2 tan (theta))
> 
> Depending upon how large your P value is, you may need to consider 
> yourreduction in cross sectional area when using these equations.
> 
> Brian K. Smith, P.E.
> 
> 
> -----Original Message-----
> From: W. Gray Hodge [mailto:ghodge(--nospam--at)hodgedesign.com]
> Sent: Tuesday, September 04, 2001 3:26 PM
> To: 'seaint(--nospam--at)seaint.org'
> Subject: Cable Problem
> 
> 
> Can anyone tell me (or direct me to a good resource) how I 
> calculate the
> sag and resultant tension in a cable due to a point load, given the
> distance between end supports, the cable properties (Area and 
> Modulus of
> Elasticity), the initial tension in the cable and the magnitude and
> location of the point load along the cable.  I am assuming that 
> the ends
> of the cable are at approximately the same elevation.
> 
> Thank you for your assistance.
> 
> Gray Hodge
> 
> 
> 
> 
> * 
> *   This email was sent to you via Structural Engineers 
> *   Association of Southern California (SEAOSC) server. To 
> *   subscribe (no fee) or UnSubscribe, please go to:
> *
> *   http://www.seaint.org/sealist1.asp
> *
> *   Questions to seaint-ad(--nospam--at)seaint.org. 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: http://www.seaint.org 
> 


* 
*   This email was sent to you via Structural Engineers 
*   Association of Southern California (SEAOSC) server. To 
*   subscribe (no fee) or UnSubscribe, please go to:
*
*   http://www.seaint.org/sealist1.asp
*
*   Questions to seaint-ad(--nospam--at)seaint.org. 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: http://www.seaint.org