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Item Types - Begin & End Station of a line from reference alignment

Brendan Sheehy
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I'm hoping to utilize item types to be able to compute and create quantity tables for one of my projects in ORD.  I'm currently using ORD CE 2021 Release 2. I don't have much experience with item types and zero experience with expressions, but hoping to figure something out to speed things up.  Just as an example I was hoping to get an item type setup for a curb and gutter line that would provide the following information:

Reference Alignment - allow me to select the alignment that the curb and gutter is based on

Start Station - have ORD automatically get the end station of the line based on the referenced alignment

End Station - have ORD automatically get the end station of the line based on the referenced alignment

Side - which side of alignment

Length - I've figured this one out from other forums


The idea would be then to run this item type to a table for each alignment to use on quantity sheets. If anyone has any experience or ideas how to create the expressions to do this I'd greatly appreciate any input.

Thanks

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    Take a look at the Bentley example workspace. There is an example of the expressions you need in there.

    • System.String.Format("{0:0+00.000}",CivilExpression.StationStart(this.Reference__x0020__Alignment)) & " [" & this.Reference__x0020__Alignment & "]"
    • IIf (CivilExpression.OffsetStart(this.Reference__x0020__Alignment)< 0, System.String.Format("{0:0.00} Lt.",System.Math.Abs(CivilExpression.OffsetStart(this.Reference__x0020__Alignment))),System.String.Format("{0:0.00} Rt.",System.Math.Abs(CivilExpression.OffsetStart(this.Reference__x0020__Alignment))))

    Robert Garrett
    Senior Consultant

    www.envisioncad.com

  • 0 Offline in reply to Robert Garrett

    Robert,

    Thanks for the reply.  I checked my example workspace from Bentley and the item types were empty in mine so I'm not sure if I'm missing something there.  I did at least try to replicate the start station and rt/lt based on the expressions you provided and didn't get any results.  I added the expressions to my "C&G Quantity" Item Type, and then assigned the item type to a linestring,  After that I wasn't sure what the next step was.  I tried to type in the alignment name in the reference alignment dialogue to see if that would populate the start station and rt/lt but that didn't do anything. 

    Do you have any suggestions?

    Thanks

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  • 0 Offline in reply to Robert Garrett

    Robert,

    Thanks for the reply.  I checked my example workspace from Bentley and the item types were empty in mine so I'm not sure if I'm missing something there.  I did at least try to replicate the start station and rt/lt based on the expressions you provided and didn't get any results.  I added the expressions to my "C&G Quantity" Item Type, and then assigned the item type to a linestring,  After that I wasn't sure what the next step was.  I tried to type in the alignment name in the reference alignment dialogue to see if that would populate the start station and rt/lt but that didn't do anything. 

    Do you have any suggestions?

    Thanks

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