AutoCAD Civil 3D :: Expression In Structure Labels For Survey

Sep 6, 2013

I am trying to make a single point label style that will return a blank line in the label if no data is provided.
The way i have it coded now my label for a structure with only two inverts comes out looking like this:

STCB 500 Rim=300.00
12" CONC N IE=295.00
12" CONC S IE=296.00
I would like the number of lines returned to match the actual number of inverts in the structure and leave out the place holders.:

STCB 500 Rim=300.00
12" CONC N IE=295.00
12" CONC S IE=296.00
I can work around this by having a label style for each number of pipes, but i would also like this code to be inseted into a table style and in that case i don't know of any way to assign multiple styles to one table.
My current code looks like this:
RIM=<[Point Elevation(Uft|P2|RN|AP|GC|UN|Sn|OF)]>
<[1 SIZE(CP)]> <[1 TYPE(CP)]> <[1 DIR(CP)]> <[IE TEXT(CP)]><[1 INV(Uft|P2|RN|AP|GC|UN|Sn|OF)]>
<[2 SIZE(CP)]> <[2 TYPE(CP)]> <[2 DIR(CP)]> <[IE TEXT(CP)]><[2 INV(Uft|P2|RN|AP|GC|UN|Sn|OF)]>
<[3 SIZE(CP)]> <[3 TYPE(CP)]> <[3 DIR(CP)]> <[IE TEXT(CP)]><[3 INV(Uft|P2|RN|AP|GC|UN|Sn|OF)]>
<[4 SIZE(CP)]> <[4 TYPE(CP)]> <[4 DIR(CP)]> <[IE TEXT(CP)]><[4 INV(Uft|P2|RN|AP|GC|UN|Sn|OF)]>
The problem is that 1 INV-4 INV are being defined by an expression that reads like

{Point Elevation}-{1 MD}

so when no data is intered for my UDP "1 MD"  it returns the point elevation. I want an equation that says if rpoitn elevation -measure down=point elevation then no data is shown.

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Dec 13, 2013

I'm trying to create a custom expression in a structure table that will list the "size" of the structure, wheter it be a circular or rectangular structure.  My column simply states size and I want it to label 5' for a circular or 4'x4' for a rectangular (or whatever the specific sizes are).  The thought was to create an IF function, but Structure Shape was not available to use in expressions (among other problems).  Short of using the description field (tedious) as a workaround?

In this example - CB-104 is a rectangular structure and CB-106 is a circular.  I'd like the CB-104 size to read 4'x4'.

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here's my process:

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Nov 1, 2012

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One of the main things I do is label elevations from an alignment and a profile, in plan view.

I have a style that does this, and it gets to the point where it asks to pick the profile.

If the profiles are data ref's, i can pick from a list, but if the alignment is xreffed, you must do a graphical pick.

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Three steps per street at a minimum.

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I have also tried it without a pair of brackets:

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