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    Mansard roof

    Hello I am trying to make a mansard roof, i.e. a roof whoseangle changes half way through.

    This looks very easy in the videos on Youtube. However, whenI try to do it…….
    I startby usingsimple process of drawing walls and creating roof by footprint.
    See attached drawing:the roof’s base is Roof 1. The level I am trying to start cutoff is Roof2.
    However, when I use cutoff I get the following errormessage:
    “The roof’s cutoff failed and wasremoved. Make sure the cutoff height is not below the roof.”

    This is clearly not the case because Roof 2 level is aboveRoof 1.
    What am I doing wrong?
    Thanks in advance.
    Attached Files

    #2
    Can you upload your rvt file?

    Comment


      #3
      OK here is Rvt file.

      If you look at Section 1, I believe you will see I am doing everything correctly.

      I am trying to cutoff roof at Roof level 2 to change a 65 degree roof to a 15 degree roof.

      Some programs have a maddening habit of not allowing you to Boolean when they should.

      So what is going on?
      Attached Files

      Comment


        #4
        Fix your sketch. Make it a single line instead of 3. If you need to keep that roof edge split, at least delete a tiny piece of line that you have over there. I’m not sure though, why you want this roof to be divided like that.

        Also, move your building where your elevation markers are, it is way off.
        Attached Files

        Comment


          #5
          OK I joined 2 walls on left so only one wall. Cutoff worked after this.
          Is that what you meant when you said “Make it a single line instead of three”( but surely one instead of two?)

          I realise that building in plan is way off elevation markers. This is because I was originally building model off plan created as dwg.

          How do you locate elevation markers in plan?

          Comment


            #6
            Originally posted by Ecotech Kid View Post
            Is that what you meant when you said “Make it a single line instead of three”
            I meant roof sketch line, not walls.



            Originally posted by Ecotech Kid View Post
            How do you locate elevation markers in plan?
            Zoom out (ZA) and zoom in the lower left corner, or activate 'reveal hidden elements' to see the 'project base point' icon - that's where your elevation markers are.

            Comment


              #7
              Well I moved building to origin, where elevation markers are.
              Only problem is I seemed to have lost the levels on section.
              I cannot find them even if I do a reveal hidden elements search.
              If I try to create new levels with same names I am told I cannot use these names since they are already in use. Any idea what I am doing wrong?
              Last edited by Ecotech Kid; May 1, 2017, 09:10 AM.

              Comment


                #8
                Go to the view where you can see your levels, if they are nowhere to be found, in the elevation/section view, make sure Crop View option is disabled, then zoom all (ZA). You should be able to see them now. Select one (or all), right click, pick Select All Instances In Entire Project (just to be sure you have them all), right click again, Maximize 3D Extends. With the levels still selected, right click again and pick Reset to 3D Extends.

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