Be very careful using "Unistrut" for trapeze members. The same section modulus is used for the solid, slotted, perforated, etc models. However, only the solid is in strict conformance with NFPA 13. Even though the slotted/perforated units have the same section modulus, they have different deflections. The section modulus table in NFPA 13 is based on deflection of the trapeze and assumes a solid member. Slotted and perforated units will deflect much more than a solid unit.
*Thanks* * * *Rahe Loftin, PE * *Fire Protection Engineer (AHJ)* *General Services Administration* *Region 7 - TX, OK, NM, AR, LA* *Design & Construction 7PCE* * * *c - 817-371-3102* *o - 817-978-7299* On Mon, Mar 4, 2013 at 11:43 AM, Mike Hairfield <[email protected]> wrote: > > Does any one know the Modulus of Unistrut for trapeze hangers? > > Mike > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20130304/22ce6203/attachment.html > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20130307/7204c554/attachment.html> _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
