Specifying a moment of inertia for an open web steel joist or truss
Specifying a moment of inertia for an open web steel joist or truss
(OP)
I work for an open we steel joist manufacturer. Occasionally we see EORs specify a minimum required moment of inertia. There are a number of reasons I can imagine them specifying this but I wanted to get a more comprehensive list from this community. If you are a specifying engineer, why might you specify a minimum moment of inertia for an open web steel joist?
Thanks in advance!
Thanks in advance!
Thanks!
Tim_B






RE: Specifying a moment of inertia for an open web steel joist or truss
1. The designer still has freedom to select joist depth details (for example, shallow joist with heavy members or deep joist with smaller members).
2. Owner gets a design that exceed the minimum required to meet code. Good way for the Owner to specify reserve capacity in the structure to allow for future changes.
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RE: Specifying a moment of inertia for an open web steel joist or truss
RE: Specifying a moment of inertia for an open web steel joist or truss
Dik
RE: Specifying a moment of inertia for an open web steel joist or truss
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.