Domegaia

    • Register
    • Login
    • Search
    • Categories
    • Recent
    • Search

    Cone dome shape

    Tangents
    4
    12
    1247
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • Martin10
      Martin10 Dome Builder Workshop Graduate Dragon Tamer last edited by

      anyone know, who to desing the compass arm for chance the style of the dome , make it with more cone shape, like super adobe?
      I suppose is changing the compass arm, but maybe is with other tip, anyone knows?

      A 1 Reply Last reply Reply Quote 0
      • Martin10
        Martin10 Dome Builder Workshop Graduate Dragon Tamer last edited by

        This post is deleted!
        1 Reply Last reply Reply Quote 0
        • A
          anthonydjones Dragon Tamer last edited by

          I am doing that sort of. My design is a Nubian arch. You have two chains or compass points. One central for the horizontal radius. A second offset from the true center by some distance. This offset compass is for setting the vertical arch. Imagine a dome larger than your dome centered on your center point. Now slice the larger one vertically at center and slid the arc inward so the radius's match your smaller one. You now have a cone or rather a much steeper vertical arc.
          If you do some research on how Hajjar did the super adobe arches you will see what I mean.

          1 Reply Last reply Reply Quote 0
          • Martin10
            Martin10 Dome Builder Workshop Graduate Dragon Tamer last edited by

            do you have any picture of this two compass points? Thanks a lot Anthony!!

            A 1 Reply Last reply Reply Quote 0
            • A
              anthonydjones Dragon Tamer @Martin10 last edited by

              @Martin10 Here you go. Hope this clarify's my intentions.
              I have included my pod concept as well. You can alter the entry/connectors as needed on any extensions needed for future "rooms".
              I got my Little Dragon working so I am testing various agents for foam. I will post that in a foam forum chain.0_1535589699266_offset arc.PNG 0_1535589704272_pods.PNG

              1 Reply Last reply Reply Quote 1
              • Martin10
                Martin10 Dome Builder Workshop Graduate Dragon Tamer last edited by

                0_1535623305226_dome piramide.jpg

                1 Reply Last reply Reply Quote 2
                • A
                  anthonydjones Dragon Tamer @Martin10 last edited by

                  @Martin10 This explains how the compass works. He is dimonstrating how to make the conical shape. It's used on sand bags but the same thing can be used on Arcrete blocks.
                  iVideo](

                  )
                  The compass explanation starts at the 15:10 mark in the video.

                  1 Reply Last reply Reply Quote 1
                  • Martin10
                    Martin10 Dome Builder Workshop Graduate Dragon Tamer last edited by

                    Thanks a lot anthonydjones, i understood the concept, but still are couple of problems for put in practice
                    In the video , they do with chains, with it is easy to replace or catching more chain from the central compass
                    But who we can do it with compass? who to add length to the EMT?

                    A 1 Reply Last reply Reply Quote 0
                    • A
                      anthonydjones Dragon Tamer @Martin10 last edited by

                      @Martin10 My thoughts on how to do this.

                      1. Slide two diameter EMT lengths one inside the other and screw them together like a set screw.
                      2. attach a threaded rod to one end of your compass with a couple of nuts so you can adjust for each course. The added distance should not be much and this should work great. You just have to determine how long that threaded rod needs to be. Or you could just add a length of EMT to the compass when your threaded rod is too short. EMT is cheaper than rod.
                        Things may change in real practice and I will of course share all findings with the tribe.
                      1 Reply Last reply Reply Quote 0
                      • Martin10
                        Martin10 Dome Builder Workshop Graduate Dragon Tamer last edited by

                        ![alt text](image url0_1542299277114_20080407_190526_20080407_181612_compas.jpg )
                        I found this arm prototype in internet for make domes with form of cone,
                        Is a Italian Arquitect named Fabrizio Carola ,

                        1 Reply Last reply Reply Quote 0
                        • Zander
                          Zander Dragon Tamer Workshop Graduate Forum Administrator last edited by

                          Nice compass! This article explains that an catenary arch is the ultimate strongest dome shape for carrying it's own weight and that a parabolic arch is the ultimate strongest dome shape for carrying a load in addition to it's own weight.

                          1 Reply Last reply Reply Quote 0
                          • Ignacio- DHOME
                            Ignacio- DHOME Workshop Instructor Major Contributor Dome Builder last edited by

                            I have been thinking of this topic allot being that it seems to be the primary method of forming domes. The compass arm, and how one one chooses to use it, is a direct influence on the shape one ends up getting. Are there any more ideas by you Domies on how one could get interesting and structurally sounds dome shapes?

                            1 Reply Last reply Reply Quote 0
                            • First post
                              Last post