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OpenPlant | AutoPLANT Wiki To Obtain Arc Length for Pipe Bends in OpenPlant Modeler
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            • To Obtain Arc Length for Pipe Bends in OpenPlant Modeler
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     Questions about this article, topic, or product? Click here. 

    To Obtain Arc Length for Pipe Bends in OpenPlant Modeler

    Applies To 
    Product(s): OpenPlant Modeler
    Version(s): 08.11.11.XXX (SS6)
    Environment:  Windows 7/8.1/10 (64 bit) & Others
    Area:  Properties
    Subarea:  Pipe Bend - Arc Length
    Original Author: Rahul Kumar, Bentley Product Advantage Group

    Overview

    To Define Arc length for Pipe Bends in OpenPlant Modeler. 

    Problem Description

    In OpenPlant Modeler, it has been observed that Length Property for pipe bend calculation displays as twice the arm length of bend, i.e. Length = 2 * Pipe Bend radius along with clamp length (Length to Bend Point, Length after Bend Point).

    See image below for default calculation in OpenPlant Modeler.

    Length = Length to Bend Point + 2 * Pipe Bend radius + Length After Bend Point.

    Where,
    Length to Bend Point = 100 mm
    Length after Bend Point = 100 mm
    Pipe Bend radius = 150 mm

    Length = 100 + 2*150 + 100 = 500 mm

    Actual calculation should be,

    where,

      •   D = Diameter of Pipe

    Note –In OpenPlant Modeler unit conversion 1” = 25.4mm

    hence desired value would be,

      • = 1.5*4 *25*PI/180*90
      • = 235.619mm

    Considering Length to Bend Point = 100 mm & Length after Bend Point = 100 mm,

    Updated length would be = 100 + 235.619 + 100 = 435.619 mm

    See below steps to overcome this situation by defining a new property in schema through class editor and applying the mathematical expression in EC expression. 

    Steps to Resolve

    1. Launch OpenPlant Project Administrator.
    2. Select project unit of working.
    3. From Tools ->Select Class Editor to launch. 



    4. Open OpenPlant_3D.01.07.ecschema and supplement it with below schema.
      OpenPlant_3D_Supplemental_Modeling.01.07.ecschema
      For More information on supplementing schema Click Here>>>>
    5. Navigate to class PIPE_BEND.
    6. Under property tab, use LENGTH Property.
    7. Copy LENGTH Property & paste it on same window to create a new property.

      1. Right click on LENGTH property. See image.



      2. Move to below in property list, right click on it to Paste. See image below.



      3. Rename it to ARC_LENGTH and other fields as per below image shown. 

          

         Note –
        Set the TypeName to string. 

    8. On ARC_LENGTH property, click on Custom Attributes->Add/remove



    9. Check for custom attribute (CA) Caculated ECProperty Specification, pull it down in second dialog and set the location as shown in below image.



    10. Set the expression as shown in below image. 

      LENGTH_TO_BEND+System.Math.PI*NOMINAL_DIAMETER*BEND_POINT_RADIUS*ANGLE/180+LENGTH_AFTER_BEND





    11. Save & Close the schema.
    12. Launch OpenPlant Modeler.
    13. Place a pipe bend with same value shown above to verify results.  

    Still A Problem?

    If above problem still persist, then please create a Service Request and contact Bentley Product Advantage group along with the list of all relevant details to get in depth analysis and for possible solution or workarounds. 

    See Also

    Properties - OpenPlant Modeler
    Properties - OpenPlant Modeler To discuss properties related Issue. See Index: Fundamentals of External Database Query in OpenPlant Modeler How to Add Database Connection String Variable in Managed…
    Last edited over 6 years ago in OpenPlant | AutoPLANT > OpenPlant | AutoPLANT Wiki

    Comments or Corrections?

    Bentley's Product advantage Group requests that you please confine any comments you have on this Wiki entry to this "Comments or Corrections?" section. THANK YOU!

    • OpenPlant Modeler
    • Pipe Bend
    • OPM
    • property
    • bends
    • 08.11.11.xx
    • Length to bend
    • Caculated ECProperty Specification
    • 08.11.11.87
    • Arc Length
    • Length from Bend
    • Pipe Bend radius
    • Share
    • History
    • More
    • Cancel
    • Rahul Kumar Created by Bentley Colleague Rahul Kumar
    • When: Thu, Jul 7 2016 5:26 PM
    • Shubham Sawant Last revision by Bentley Colleague Shubham Sawant
    • When: Tue, Jan 25 2022 8:53 PM
    • Revisions: 9
    • Comments: 0
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