How is the existing unistrut attached to the beam? Assume bottom flange? Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT 860-535-2080 www.fpdc.com
> On Apr 4, 2014, at 7:56 PM, "Jerry Van Kolken" <[email protected]> wrote: > > I have a retrofit project where I structure will not allow us to install > beam clamps. The existing hangers are unistrut clamp to the beams and > extended 4" out to allow rod a ring to be attached. I would like to use a > similar assembly but I don't know how to calculate the loading to determine > the size of the unistrut. I've heard some stuff about 4x the section modulus > based on the trapezes table in NFPA. > > > > I was also wondering if there is a adjust the section modulus if you are not > planning on hanging at 15'-0"? > > > > > > Jerry Van Kolken > > Millennium Fire Protection Corp. > > 101 Copperwood Way, Suite H > > Oceanside, CA 92058 > > (760) 722-2722 FX 722-2730 > > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
