So lets be clear, you do not need to convert your Drainage Network to trimeshes.

In case you missed it, you do not need to convert your Drainage Network to trimeshes.  You can confidently export the Drainage Network to IFC.

Export entire water network
  • Yes, you want this ticked: on
  • Unless you have a reason to only exported selected water strings.
Export water network as IFCSYSTEM
  • Yes, you want this ticked: on
  • Yes. You want this ticked: on
    • Water links/nodes will be exported as IfcFlowSegment/IfcDistributionChamberElement.

Some software does not support IfcSystem. We generally say that is their problem, not yours.  However, if you must dumb-down your water network, then this is the setting to do it.

  • Un-tick this option to export your water network as ‘Proxy’ junk.
  • When the BIM Person complains about ‘proxy’ junk, quietly explain what they don’t understand.
Chord to arc tolerance
  • If non-zero, water string arcs are broken up by the tolerance before exporting to IFC.
Chainage Interval
  • If non-zero, water string straights are broken up by the interval before exporting to IFC.e Interval
Node name mode
  • Naming convention to use for Water Nodes.
Link name mode
  • Naming convention to use for Water Strings.
Export as tiny pipes
  • When Ticked: on, zero diameter links are given the Tiny pipe diameter.
  • If you have links with zero diameter, then they will probably need a diameter.
Tiny pipe diameter real box 0.0001
  • Used when Export Tiny Pipes is ticked: on
Exclude water network attributes

However, if you don’t like someone and plan to flood the Federated Model with 1000’s of water attributes, leave this un-ticked.

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