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Max working load ratings for sash cord?


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#1 Salil Sundresh

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Posted 09 June 2010 - 05:36 PM

What are the maximum working loads of sash cord #6, 8, 10 and 12? Does it vary by manufacturer? Any sources or input would be greatly appreciated. Thanks.
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#2 JD Hartman

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Posted 09 June 2010 - 07:14 PM

These numbers are for Poly sash cord. Strength does vary among manufacturers.
#4 213 lbs. #6 151 lbs. #8 88 lbs. #10 51 #12 41 lbs.
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#3 JD Hartman

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Posted 09 June 2010 - 08:30 PM

Sorry, copied the wrong figures over.


Below is the break strength, working load is significantly less. Published information suggest that working load is no more than 20% of the breaking strength for a cord or rope in good condition.

#4 189 lbs. #6 483 lbs. #8 787 lbs #10 1029lbs #12 1260lbs

Here is an imformative reference: http://www.bevisrope.com/id40.htm
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#4 Salil Sundresh

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Posted 09 June 2010 - 11:25 PM

Sorry, copied the wrong figures over.


Below is the break strength, working load is significantly less. Published information suggest that working load is no more than 20% of the breaking strength for a cord or rope in good condition.

#4 189 lbs. #6 483 lbs. #8 787 lbs #10 1029lbs #12 1260lbs

Here is an imformative reference: http://www.bevisrope.com/id40.htm

Thanks JD, I appreciate it.
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#5 Daniel Wallens

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Posted 10 June 2010 - 01:01 PM

That is not sash cord. Sash, when on set, refers to weaved natural fiber cotton cording, such as what's listed in the links below. What you listed is polypropylene cord, a synthetic material, and that particular one isn't really used (save maybe for certain specific applications). That particular rope from Bevis that you found online, moreover, seems far too slippery, and if polypropylene is needed, better to get something like multiline or Endura for extreme applications.

In answer to the question, the WLL of sash cord (natural fiber cotton) can vary greatly, but it's generally in between 30 to 125 pounds, depending on: diameter size; manufacturer; braid type; and core construction.

http://www.kitsandex...rope/index.html
http://www.filmtools...pelinecord.html
http://www.filmandvi.../roandtrli.html
http://www.setstuffr...t=8&cat=76&pg=3
http://www.rosebrand...x?keywords=sash

(Also, a simple search online for "sash cord" will yield almost all cotton cordage: http://www.google.co...=sash cord&aq=f)

-DW
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#6 JD Hartman

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Posted 10 June 2010 - 03:10 PM

What is listed in my post are the break strength figures I found for sash cord with a poly core. The link for Bevis Rope is for the reference information at the bottom regarding working load of cord and rope. Not as a specific recommendation of any product on that page.
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