Head and Tail Positioning by Bottom or Top of Pipe
- Last UpdatedNov 19, 2025
- 2 minute read
Keywords:
BOP TOP INFRONT BEHIND ONTOP UNDER
Description:
This command allows the Head or Tail of a Branch to be moved vertically to a specified clearance above or below a Design element or Point. If the Head or Tail Tube has been selected, then its cross-section will be taken into account. (Otherwise the HPOS or TPOS will be moved to the specified clearance, as no Tube geometry is available.)
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Example: |
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BOP ONTO /BEAM(At the Head) |
This will position the Tube on top of /BEAM with a clearance of 0. |
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TOP UNDER U3000(At the Tail) |
This will position the Tail under the elevation U3000 with a clearance of 0. |
Note: If no Tube can be found emerging from the point specified, then only the point’s position can be used.
Command Syntax:
>--+-- BOP --.
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‘-- TOP --+-- <uval> --.
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‘------------+-- FROm --.
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|-- TO ----+-- <bpos> -->
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|-- INFront --.
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|-- BEHind ---|
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|-- ONTop ----|
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‘-- UNDer ----+-- <gid> ---.
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|-- <marke> --|
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‘-- <bpos> ---+-->
Querying:
>-- Query --+-- PHead ------.
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|-- PTail ------|
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|-- HTail ------|
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|-- HHead ------|
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|-- HPosition --|
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‘-- TPosition --+-->
Figure 3:3. Head/Tail positioning by Bottom/Top of pipe