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    Can't Make Footprint Roof

    I'm wagering that it's an problem in the project of some sort but - I keep running into issues trying to make a small roof. The roof I'm trying to make is square and hipped on all sides. I've made a million of them in the past but for some reason this particular roof hates my guts and refuses to work. I've tried picking walls as well as just drawing the shape and I keep getting an error. I can dimension the sketch lines and the dims show the correct numbers for all sides (set to 1/256" tolerance) and the corners are all 90.000 degrees.

    Anyone run into this or have any insights to what might be the issue?

    edit: It only fails if I try to hip all 4 sides. any combination of hips & gables, shed or flat works fine, it is just the 4-sided hip.
    Attached Files
    Last edited by cellophane; May 30, 2014, 05:17 PM.
    Revit for newbies - A starting point for RFO


    chad
    BEER: Better, Efficient, Elegant, Repeatable.

    #2
    Try a less steep slope?
    It might be that the "peak" ends up with overlapping areas.
    Dave Plumb
    BWBR Architects; St Paul, MN

    CADsplaining: When a BIM rookie tells you how you should have done something.

    Comment


      #3
      Originally posted by cellophane View Post
      I'm wagering that it's an problem in the project of some sort but - I keep running into issues trying to make a small roof. The roof I'm trying to make is square and hipped on all sides. I've made a million of them in the past but for some reason this particular roof hates my guts and refuses to work. I've tried picking walls as well as just drawing the shape and I keep getting an error. I can dimension the sketch lines and the dims show the correct numbers for all sides (set to 1/256" tolerance) and the corners are all 90.000 degrees.

      Anyone run into this or have any insights to what might be the issue?

      edit: It only fails if I try to hip all 4 sides. any combination of hips & gables, shed or flat works fine, it is just the 4-sided hip.
      get rid of the "two-cut" options and see if that helps, set it to Plumb Cut. Some roofs don't like that parameter.
      Scott D Davis
      Sr. AEC Technical Specialist
      Autodesk, Inc.
      http://bit.ly/aboutsdd

      Comment


        #4
        Also try aligning all the eaves. They may be at different heights.
        Dan

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          #5
          Originally posted by DaveP View Post
          Try a less steep slope?
          It might be that the "peak" ends up with overlapping areas.
          A square hipped roof = pyramid If it was a weird shape I agree 100% with this.

          Originally posted by Scott D Davis View Post
          get rid of the "two-cut" options and see if that helps, set it to Plumb Cut. Some roofs don't like that parameter.
          Originally posted by dzatto View Post
          Also try aligning all the eaves. They may be at different heights.
          It is set to Plumb Cut and all the eaves are aligned. It errors out when I pick walls or lines. If I draw the shape and manually place it everything is ok. If I try to align with the walls it freaks and gives an error. The only thing I can think of is that one of the walls isn't quite 90" but is 90.00001 or something ridiculous like that. :crazy:

          Thanks :beer:
          Revit for newbies - A starting point for RFO


          chad
          BEER: Better, Efficient, Elegant, Repeatable.

          Comment


            #6
            Maybe your broke Revit... maybe Revit is trying to tell you to be more creative with your design... maybe Revit is telling you to go home its 4:57pm on a Friday. Take your pick.
            -Alex Cunningham

            Comment


              #7
              Originally posted by Alex Cunningham View Post
              Maybe your broke Revit... maybe Revit is trying to tell you to be more creative with your design... maybe Revit is telling you to go home its 4:57pm on a Friday. Take your pick.
              must be nice to be an hourly waged employee :hide:
              I'm retired, if you don't like it, go around!

              Comment


                #8
                Originally posted by Dave Jones View Post
                must be nice to be an hourly waged employee :hide:
                If only I were...
                -Alex Cunningham

                Comment


                  #9
                  I have had a similar issue, the roof was a bit more complicated but same thing. It should work, but just won't. I never found the reason either. In our case, the building footprint changed, which eliminated the issue for us.
                  Andrew Harp
                  BIM Manager GHD
                  If you are not willing to learn, no one can help you.
                  If you are determined to learn, no one can stop you.

                  Comment


                    #10
                    Originally posted by cellophane View Post
                    I'm wagering that it's an problem in the project of some sort but - I keep running into issues trying to make a small roof. The roof I'm trying to make is square and hipped on all sides. I've made a million of them in the past but for some reason this particular roof hates my guts and refuses to work. I've tried picking walls as well as just drawing the shape and I keep getting an error. I can dimension the sketch lines and the dims show the correct numbers for all sides (set to 1/256" tolerance) and the corners are all 90.000 degrees.

                    Anyone run into this or have any insights to what might be the issue?

                    edit: It only fails if I try to hip all 4 sides. any combination of hips & gables, shed or flat works fine, it is just the 4-sided hip.
                    I just ran into the same problem. Square hip roof, created with rectangle tool: "can't make footprint roof". Did you resolve this, or draw in lines in all relevant views :hide: ?

                    UPDATE: My original criteria for sketching this existing conditions roof was drawing a rectangle with an offset from columns beyond the building corners. When this was rejected by Revit, I then tried creating the rectangle by selecting walls (with a different offset, to get the sketch lines in the same place as the original roof). This resolved the Revit error. I have no idea why the other completely valid sketch creation method did not work, but this did. Whatever.
                    Last edited by lost again again; November 20, 2014, 04:40 PM. Reason: more information, including a resolution in my circumstance.

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