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Thread: [Revit MEP] - Create electrical single line diagram

  1. #1
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    [Revit MEP] - Create electrical single line diagram

    Applies to: - Revit MEP

    New Feature / Problem:
    Once you start connecting electrical equipment to each other the system browser starts expanding and showing what is connected to what. (ex 600V distribution panel -> 600V/208V transformer -> 208V distribution panel)

    Would be great to have a customizable view that appears based on the system browser that shows common single line diagram symbols that can be customized to company standards. All items of system browser should be interconnected to each other with lines (as per system browser). Since all of the info is shown it should just be a matter of tagging all representations of electrical equipment to get required values. As well as adding text to supplement some of the information.

    The only way to do this properly now is re-draw an entire single line diagram using a drafting view or linking a cad file to show the required info. That or take sections of electrical equipment, strip everything but said equipment and draw lines to represent conduit & wire.

    Why do you need this Feature / Why is it a Problem:
    You already spend enough time modelling everything with proper information. Why duplicate it again? This has potential to save lots of time. This has ability to cut down on human error. BIM should be parametric. Single line risers in electrical are very important. There is currently no easy way to translate an electrical plan to a single line diagram. Interconnections to equipment has to be re-drawn on a drafting view or an existing autoCAD file is linked to a drafting view. Seems very trivial to translate a system browser to some sort of riser representation. The info is all there, the connections are there.. just one more little step to make it even better.

    Workflow:
    -create power/comms/fire alarm floor plan
    -connect all equipment (to get total load at incoming service)
    -create drafting view to create riser
    -constantly check between floor plan equipment names and drafting view to make sure riser is showing correct info

    Benefits:
    -would cut down on amount of work, since duplicating info takes time
    -duplicate info is prone to errors
    -all info is already in the model..WHY duplicate to a non parametric format?

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  2. #2
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    This is the biggest disappointment I have had with Revit for several releases. Electrical lives and dies with the electrical power one line drawings. Come on AutoDesk, what is the problem.
    Quote Originally Posted by skoko View Post
    Applies to: - Revit MEP

    New Feature / Problem:
    Once you start connecting electrical equipment to each other the system browser starts expanding and showing what is connected to what. (ex 600V distribution panel -> 600V/208V transformer -> 208V distribution panel)

    Would be great to have a customizable view that appears based on the system browser that shows common single line diagram symbols that can be customized to company standards. All items of system browser should be interconnected to each other with lines (as per system browser). Since all of the info is shown it should just be a matter of tagging all representations of electrical equipment to get required values. As well as adding text to supplement some of the information.

    The only way to do this properly now is re-draw an entire single line diagram using a drafting view or linking a cad file to show the required info. That or take sections of electrical equipment, strip everything but said equipment and draw lines to represent conduit & wire.

    Why do you need this Feature / Why is it a Problem:
    You already spend enough time modelling everything with proper information. Why duplicate it again? This has potential to save lots of time. This has ability to cut down on human error. BIM should be parametric. Single line risers in electrical are very important. There is currently no easy way to translate an electrical plan to a single line diagram. Interconnections to equipment has to be re-drawn on a drafting view or an existing autoCAD file is linked to a drafting view. Seems very trivial to translate a system browser to some sort of riser representation. The info is all there, the connections are there.. just one more little step to make it even better.

    Workflow:
    -create power/comms/fire alarm floor plan
    -connect all equipment (to get total load at incoming service)
    -create drafting view to create riser
    -constantly check between floor plan equipment names and drafting view to make sure riser is showing correct info

    Benefits:
    -would cut down on amount of work, since duplicating info takes time
    -duplicate info is prone to errors
    -all info is already in the model..WHY duplicate to a non parametric format?

    Attachment comments:



    Do you agree with the above?? Use the "RATE THIS THREAD" tool at the top right corner to express you opinion.

  3. #3
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    Major workaround warning here.... I agree 100% that the single line diagram should be easy and semi-automated. In the meantime....

    Revit can make intelligent power riser diagrams, but it does take some work on the front end and some family modification. The trick is to use "displaced elements" in a locked 3d view oriented as a pseudo 2d view (i.e. left or front).

    Step 1. You will probably want to add 2 generic model line 2d boxes (one that you view in Front/Back and one for Left/Right) into all of your electrical equip families. Use view templates to make this box visible in your 3d power riser view and turn off the 3d geometry. The reason for this is that not all equipment in your model will have its wide side facing you when you create your pseudo 2d view in a 3d view. The easiest way to do this is to create a simple generic model and nest it into each equip family (driving the box size with parameters of course)
    2. Create a line-based generic model family for feeders. This will enable you to "sketch" the feeder lines, tag them, and schedule them as well.
    3. Build tags for all equipment that show what you typically call out on riser diagrams for transformers, panels, switchboards, feeders, etc.
    4. Now just build your Revit model like you always do, making sure to use the modified equip families.
    5. Create a Ref plane far away from your building. I usually place it 500 ft away. The plane should be parallel to the pseudo 2d riser diagram you plan to create. Name the plane something like "Power Riser Plane".
    6. Create your 3d view and orient it so that the building is between the camera and the "Power Riser Plane". Orient the 3d view parallel to the Power Riser Plane. Apply a view template that only with proper filters applied so that only the 2d boxes inside the equip families and the feeder line generic models and tags are visible. Set the work plane to be the Power Riser Plane. Lock the 3d View. This should now look just like a 2d elevation.
    7. Tag all of the equipment.
    8. Use displaced elements to move the electrical equipment around on the pseudo 2d view and arrange as you typically would show it on a 2d line power riser diagram. Move the tags as needed.
    9. "Connect" the 2d equipment with the feeder generic model line family. You should have a different type for each size so that you can tag the lines as different feeder sizes. This is basically drafting on the plane that is 500 ft away from the bldg, but it looks right as long as the view is locked in an elevation view.
    10. You should now have what appears to be a 2d riser diagram that is reflective of the real model you have built since the equipment tags are actually tagging the real equipment instances. Add text and model lines as needed to round out the view.

    Words of warning: don't try doing this until your equipment locations are pretty well static. You don't want to do this, then start moving equipment all over the place.

    Is it as easy as a drafting view - no. But it does leverage more Information from your model and maintain coordination way better since the info tagged on the riser is the same info scheduled/tagged elsewhere.

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