Siberian Posted July 30, 2018 Share Posted July 30, 2018 Imagine a plan view of a piece of horizontal pipe drawn "sideways" on the screen. I am able to insert a 45° branch so that it points up to the right. If however I attempt the same thing - only to the other side so that the branch would point down to right - Revit will force the branch to be placed the opposite way - pointing down to the left. The pipe has no slope, so I don't understand why Revit would have an "opinion" about the branchs' direction. And why does it accept it in the first instance? The branch has has a symbol which will switch its direction once placed, but as soon as I attempt a pipe run from the branch, Revit immediately switches it back. Any idea why this happens?? Quote Link to comment Share on other sites More sharing options...
tzframpton Posted July 31, 2018 Share Posted July 31, 2018 Revit's pipe/duct is ran backwards from what our minds think. For instance, from supply diffuser back to the supply discharge of a unit will set the direction of flow from the unit to the diffuser. Clear as mud? A return would be from the inlet of the unit to the return grille. This puts the flow in the proper direction. I still model from the unit out to the grilles for ductwork. Also, for piping/plumbing, I run it from the source (say a floor drain back to the sanitary connection for the site, or from the domestic water source out to the fixtures). So I deal with it, always have and I guess always will. -TZ Quote Link to comment Share on other sites More sharing options...
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