Obstruction Settings
- Last UpdatedNov 17, 2025
- 1 minute read
Keywords:
OBSTRUCTION
Description:
The OBSTRUCTION attribute indicates to the clash detection facility whether a primitive should be considered as a ‘Hard’ or ‘Soft’ obstruction, or not at all. Obstructions can be specified as HARD, SOFT or NONE, or alternatively they can be specified numerically as follows:
For ordinary primitives, the following rules apply:
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No obstruction (internal graphical details)
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Soft obstruction (access volumes )
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Hard obstruction (vessel ‘envelopes’ ).
Holes (that means, negative primitives) also have the OBSTRUCTION attribute. OBSTRUCTION settings for Nozzles and Piping are given in the Catalogue.
Note: See also the Design Reference Utilities Manual for further information of the Spatial Map which is used during clash-checking.
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Examples: |
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OBST SOFT |
(At a primitive) |
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Current Element will be considered as a ‘soft’ obstruction. |
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OBST HARD |
(At a primitive) |
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Current Element will be considered as a ‘hard’ obstruction. |
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OBST NONE |
(At a primitive) |
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Current Element will be ignored during clash detection. |
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OBST 2 |
(At a primitive) |
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Current Element will be considered as a ‘hard’ obstruction. |
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Command Syntax:
>-- OBStruction --+-- integer --.
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|-- HARD -----|
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|-- SOFT -----|
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‘-- NONE -----+-->
Figure 2:3. Obstruction settings for use in clash detection