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Week #16 – Roof Modeling and Documentation
16-6. Connecting Roofs in ArchiCAD 14 and Earlier

ArchiCAD Training (Best Practices Lesson 16-6)

This 24 minute ArchiCAD training lesson explores the methods that may be used to connect roofs to each other, focusing on adding a gable extension to a simple hip roof system.

The lesson is conducted using ArchiCAD 14, and it applies directly to earlier versions as well. In ArchiCAD 15 and later, roof construction has changed and we will cover this in the next lesson; however there are times even in later versions that the methods shown here may be necessary, due to the limitations in the newer multi-plane roof tool.

After a basic rectangular building is drawn with a hip roof, a gable extension is created. Using the Command-click or CTRL-click method, roof edges are quickly repositioned to the location where they will meet the selected roof. Quick manipulations create overhangs and trim the walls to the roofs using Solid Element Operations, and the gable extension is completed.

One variation is made: the slope of the gable is changed. The roof edges need to be repositioned, which is done by selecting the main roof and Command or CTRL-clicking on the valley edges of the gable; the cutout for the main roof, as well as the extents of the overhangs, also need manual adjustment.

The slope changes are reversed using the Undo command multiple times, then the gable extension is duplicated twice, each time with a different pivot line height. First the version with a higher plate is cleaned up, then the one with the lower pivot line. In each case, a combination of manipulations is able to clean up the roofs to each other and set the walls properly.

Two final demonstrations are made showing how the gable extension can be moved in line with the hip at one end, and the hip roof contour polygon can be adjusted to include what formerly was an independent gable piece.

Please post your comments and questions below.

Eric

Thank you for visiting the Best Practices Course website. The video lessons are available for members only. If you are an active member and would like to watch the ArchiCAD training video on this page, please login to the website. If you are not currently a member, please visit the following pages for more information and to sign up for the Best Practices Course, the QuickStart Course or for the Best Practices ArchiCAD Coaching Program. Eric Bobrow, Creator of the Best Practices Course

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ArchiCAD Training: Connecting Roofs in ArchiCAD 14 and Earlier

Let us know how you feel... (5 comments so far)

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  1. MattJoyner
    4 years ago

    This is an excellent video to get some basics on creating / tying in different roofs with different plate / bearing heights. It ties alot of the basic concepts together for both walls and roofs.


  2. Salma Mussá
    5 years ago

    Eric,

    This lesson is so helpfull.
    I am glad, you answer my doubt.

    Thank you,
    Salma


    • Eric Bobrow
      5 years ago

      Salma –
      Thank you for your kind words – I appreciate getting the feedback!
      Eric


  3. DavidParsons
    5 years ago

    The explanations were very concise and shows just how quickly the the varing roof shapes can be manipulated. I wil be visiting this lesson again in the future as a reference source.

    Thanks again,

    David Parsons


    • Eric Bobrow
      5 years ago

      David –
      Thank you for your kind words.
      I’m pleased that you feel the video has such clear and useful information that you will watch it again!
      Eric