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RE: Principal Section Properties
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- Subject: RE: Principal Section Properties
- From: Zachary Goswick <ZachG(--nospam--at)angusyoung.com>
- Date: Mon, 5 Apr 1999 14:08:02 -0500
Mohr's Circle has nothing to do with calculation of section properties. Alpha is given. r(z) is given. Like I said, I can backsolve for I(z); But that is not the question. The question is "Are the principal axis section properties tabulated anywhere?" -----Original Message----- From: Roger Turk [mailto:73527.1356(--nospam--at)compuserve.com] Sent: Monday, April 05, 1999 1:45 PM To: seaint(--nospam--at)seaint.org Subject: Principal Section Properties The AISC manual that I have gives enough information that the properties about the principal axes can be calculated. Doesn't I = r^2*A ??? Isn't r(z) given???? Isn't alpha given??? Remember Mohr's circle??? A. Roger Turk, P.E.(Structural) Tucson, Arizona Zachary Goswick wrote: . > I am looking for principal (not geometric) section properties of a . > single unequal leg angle because the design (according to AISC steel . > manual "Specification for Allowable Stress Design of Single-Angle . > Members" section 5.3.2 calls for Moment of Inertia about the . > z-axis(minor principal axis) and the Section modulus about the . > w-axis(major principal axis). Given (rz) and the area, I can backsolve . > for the Iz, but calculating the Section modulus about the w-axis is . > another story. AISC manual does not have any of these values tabulated. . > I was trying to find out if they are tabulated anywhere else.
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