Compass arm height



  • Hi.
    The guide I have from the workshop says to make the post for the compass arm 34 inches in height. I am curious if the height is a ratio to the circumferance of the dome. Would a larger dome have a taller post height. If it is a ratio what is the formula?
    Thanks
    Vitus


  • Workshop Instructor

    @vitusthemad no real set formula but we do it like that to fit human scale. The equator at this heigth makes for a dome that allows for more head room Near the walls and ceilings. It would make sense to make a higher equator as the dome size increases. I know that smaller domes use shorter equators to keep bricks from angling too steeply at the base...


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