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Re: Over or under?

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Tension side

Tarek Mokhtar,SE
Laguna Beach, CA





>A guy in our office is writing a program for roof drop beam analysis and
>design.
>
>When we were allowed to review it and give comments, an immediate argument
>broke out about which side of a beam to draw a moment diagram on.
>Traditionally, a beam moment diagram is drawn on the compression side
>(positive moment up and negative moment down -- as shown in the AISC
>manuals, for a simple-span beam the moment line is over the beam line) and a
>frame moment diagram is drawn on the tension side.
>
>The programmer drew the drop-beam system like a frame (positive down and
>negative up), because he says that's the way he's always done it.  I believe
>we've talked him into adding an user option to select how it looks (either
>over or under the beam).
>
>But now I'm curious.  How many of you draw beam moment diagrams on the
>tension side and how many on the negative side?
>
>----
>Jason Kilgore
>Leigh & O'Kane, L.L.C.
>jkilgore(--nospam--at)leok.com
>(816) 444-3144
>
>
>
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