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Re: Sag-rod effectiveness?

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> From: Padmanabhan Rajendran <rakamaka(--nospam--at)>

> Sag rods are designed only for tension. As long as the end connections and
> the rod's cross section area can sustain the load in them, they should be
> acceptable.

It is common to use sag-restraints in compression, especially with cold
formed purlins. This is not well known and rarely designed properly -
the roof systems tend to perform adequately, anyway. This is why I say
that "sag" restraint is a VERY poor term to use. I prefer "purlin
stabilizer" or "purlin brace."


R. Paul Ransom, P. Eng.
Burlington, Ontario, Canada
<mailto:ado26(--nospam--at)> <>

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