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3D Truss Models

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  • M Offline
    medeek
    last edited by 31 May 2016, 19:32

    @jql said:

    This has really got into an impressive level! Congratulations!

    I've kind of been inching along recently. I've been beset with other concerns/jobs and I haven't had the time to really add some new innovative stuff to the plugin, mostly maintenance and refinements of existing truss types. My todo list has grown from a half page of notes to over 2 1/2 pages and it seems like I add something to it every other day. The dormer feature is something I really want to attack next but I need at least 3 good days of uninterrupted coding time to do it justice.

    What have I recently added that has garnered you attention? JQL

    Probably no one has noticed but I've started adding in links to the various screenshots within the Changlog. Sometimes a picture goes a long way in explaining some of these updates.

    Medeek Design Inc. - Medeek Truss Plugin Changelog

    Medeek Design Inc. - Medeek Truss Plugin Changelog

    favicon

    (design.medeek.com)

    Nathaniel P. Wilkerson PE
    Medeek Engineering Inc
    design.medeek.com

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    • J Offline
      JQL
      last edited by 8 Jun 2016, 08:33

      @medeek said:

      What have I recently added that has garnered you attention? JQL

      The latest Gui image.

      It seems very complete. I just don't think the image displays metric units does it?

      www.casca.pt
      Visit us on facebook!

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      • M Offline
        medeek
        last edited by 8 Jun 2016, 15:30

        I need to fix that. It currently is showing the typical ft-in-sixteenths on the preview image and not the metric units.

        Nathaniel P. Wilkerson PE
        Medeek Engineering Inc
        design.medeek.com

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        • M Offline
          medeek
          last edited by 8 Jun 2016, 19:53

          Quick fix. The metric GUI now shows both metric and imperial in the preview pane for gambrel attic trusses. I've lumped it into Version 1.6.0 and uploaded the corrected release.

          Nathaniel P. Wilkerson PE
          Medeek Engineering Inc
          design.medeek.com

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          • P Offline
            pilou
            last edited by 9 Jun 2016, 00:15

            Does the new RBZ overwrite the previous version
            or we must erase the "previous" by hand before loading?

            Frenchy Pilou
            Is beautiful that please without concept!
            My Little site :)

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            • M Offline
              medeek
              last edited by 9 Jun 2016, 00:33

              I usually manually remove the medeek extension and folder from my plugins folder since I don't trust that SketchUp will do a clean install. This guarantees that all files and folders were replaced.

              Nathaniel P. Wilkerson PE
              Medeek Engineering Inc
              design.medeek.com

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              • M Offline
                medeek
                last edited by 9 Jun 2016, 08:53

                Version 1.6.0 - 06.08.2016

                • Corrected a bug with raised heel fink trusses and structural outlookers.
                • Metric GUI for gambrel attic truss type now shows metric and imperial units in preview pane.
                • Added energy/raised heels for king post truss (3 variants: wedge, slider and vertical w/ strut).

                This update may seem minor but underneath the hood it is a big change. I've rewritten a significant portion of the common truss module so that I can now offer raised heel trusses for all the other common truss types. Be on the lookout for this update in the near future.

                Raised heel trusses (wedge, slider, vert) complicate things when combined with structural outlookers. I've had to add some significant logic to deal with all the permutations.

                Nathaniel P. Wilkerson PE
                Medeek Engineering Inc
                design.medeek.com

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                • M Offline
                  medeek
                  last edited by 9 Jun 2016, 09:15

                  Various configurations of a 16' King Post Truss:

                  http://design.medeek.com/resources/images/truss_su128_800.jpg

                  View model here:

                  Link Preview Image
                  3D Warehouse

                  3D Warehouse is a website of searchable, pre-made 3D models that works seamlessly with SketchUp.

                  favicon

                  (3dwarehouse.sketchup.com)

                  With a raised heel note the use of either a wedge, slider or vertical web with strut.

                  Nathaniel P. Wilkerson PE
                  Medeek Engineering Inc
                  design.medeek.com

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                  • M Offline
                    medeek
                    last edited by 9 Jun 2016, 18:11

                    I was really hoping to make it to Basecamp this year but it does not look like it will happen. Hopefully some of you can vouch for me and put in a good word if you are attending this year. I'm going to try for next year and by then this plugin will be more substantial and a little more polished.

                    Nathaniel P. Wilkerson PE
                    Medeek Engineering Inc
                    design.medeek.com

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                    • M Offline
                      medeek
                      last edited by 11 Jun 2016, 21:41

                      Version 1.6.1 - 06.11.2016

                      • Added Coffer truss type, configurations: (AUTO).
                      • Metric input enabled for coffer truss type.
                      • Added gable end trusses for coffer truss type.
                      • Structural outlookers (vert. & horz.) enabled under advanced roof options for Coffer truss type.
                      • Building parameter menu (2nd) and advanced options menu for trusses now default to last picked options of the session for that sub-menu item.

                      Various configurations of a 40' coffer truss shown below:

                      http://design.medeek.com/resources/images/truss_su129_800.jpg

                      The web triangulation algorithm automatically determines which configuration is appropriate based on the span between panel points. This simplifies the geometry input menu but does take some control from the user.

                      View model here:

                      Link Preview Image
                      3D Warehouse

                      3D Warehouse is a website of searchable, pre-made 3D models that works seamlessly with SketchUp.

                      favicon

                      (3dwarehouse.sketchup.com)

                      Nathaniel P. Wilkerson PE
                      Medeek Engineering Inc
                      design.medeek.com

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                      • M Offline
                        medeek
                        last edited by 15 Jun 2016, 06:52

                        Modified an existing truss roof to make it a half hip truss set:

                        http://design.medeek.com/resources/images/truss_su131_800.jpg

                        View model here:

                        Link Preview Image
                        3D Warehouse

                        3D Warehouse is a website of searchable, pre-made 3D models that works seamlessly with SketchUp.

                        favicon

                        (3dwarehouse.sketchup.com)

                        This will be my first venture into more complex truss systems. I figured I would cut my teeth on the half hip (Jerkin Head, Tudor Hip) truss set first before attacking the more complex full hip variants of which there are many.

                        After sketching this model up and examining the geometry I now have a number of questions:

                        1. Are my roof planes correct? Note that I have drawn the apex of the hip roofs at the edge of the last full truss and not at its centerline. Not entirely sure what is common practice in this regard.

                        2. I've shown some non-structural outlookers along the rake. What would the outlookers along the half hip portion look like?

                        3. If I use structural outlookers how would those be framed in over the hip section?

                        4. Does the apex of the half hip typically coincide with the next truss or could it land somewhere between trusses? ie. the half hip length is some multiple of the truss spacing.

                        5. Is the hip section usually the same pitch as the rest of the roof? There is really no reason why it has to be.

                        6. As the length of the half hip increases the depth of the gable end truss decreases as does the first inboard truss. What is the practical limit for the minimum depth of the first inboard truss?

                        7. Does anyone have some shop drawings of this type of truss set that I can study?

                        Nathaniel P. Wilkerson PE
                        Medeek Engineering Inc
                        design.medeek.com

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                        • M Offline
                          medeek
                          last edited by 15 Jun 2016, 19:42

                          As previously noted the web dialog from the plugin can actually be used external to SketchUp to explore gambrel attic geometry:

                          http://design.medeek.com/resources/images/truss_su125_800.jpg

                          Imperial Units:

                          favicon

                          (design.medeek.com)

                          Metric Units:

                          favicon

                          (design.medeek.com)

                          I might develop this into a web based app which would allow one to generate 2D AutoCAD geometry (.dwg) of the truss profile.

                          Nathaniel P. Wilkerson PE
                          Medeek Engineering Inc
                          design.medeek.com

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                          • M Offline
                            medeek
                            last edited by 16 Jun 2016, 00:26

                            With non-structural lookouts would you frame them something like this? This question is mostly directed at the contractors and carpenters out in the field who actually have to build these roofs. Typically as an engineer I never worry about these details especially when they are non-structural.

                            http://design.medeek.com/resources/images/truss_su132_800.jpg

                            In my opinion they aren't really doing a whole lot, much better to drop the gable truss and then cantilever them from the first in board truss (ie. structural outlookers).

                            Nathaniel P. Wilkerson PE
                            Medeek Engineering Inc
                            design.medeek.com

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                            • M Offline
                              medeek
                              last edited by 16 Jun 2016, 02:54

                              Hip Truss Algorithm:

                              http://design.medeek.com/resources/truss/GEOMETRY/HIP1_800.jpg

                              Nathaniel P. Wilkerson PE
                              Medeek Engineering Inc
                              design.medeek.com

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                              • J Offline
                                JQL
                                last edited by 16 Jun 2016, 10:30

                                I wish I would know what you're talking about, so I could help you. All this english roof terms are just... well foreign to me. ๐Ÿ˜„

                                www.casca.pt
                                Visit us on facebook!

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                                • M Offline
                                  medeek
                                  last edited by 20 Jun 2016, 01:55

                                  Version 1.6.3 - 06.19.2016

                                  • Added Gable Dormers to the Minor Roof Sub-Menu (dormer walls only).

                                  For now only the walls of the dormer are created:

                                  http://design.medeek.com/resources/images/truss_su134_800.jpg

                                  View model here:

                                  Link Preview Image
                                  3D Warehouse

                                  3D Warehouse is a website of searchable, pre-made 3D models that works seamlessly with SketchUp.

                                  favicon

                                  (3dwarehouse.sketchup.com)

                                  I am still ironing out the details on how to best model the roof geometry. I will probably offer either a rafter or truss option. Other details such as multiple windows will also come later.

                                  For now please test the metric and imperial wall creation. I will probably need to post a tutorial video on how to use this feature since it involves selecting the main roof plane (top of a rafter or truss) and then two points that define the width/exterior corners of the dormer.

                                  Nathaniel P. Wilkerson PE
                                  Medeek Engineering Inc
                                  design.medeek.com

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                                  • facerF Offline
                                    facer
                                    last edited by 20 Jun 2016, 03:03

                                    Medeek,
                                    A 3D Kubity model may help viewers explore your 3D Models ๐Ÿ˜„
                                    (refer to private PM note)

                                    https://www.kubity.com/p/tWg5zg

                                    [kubity:2u0sejcq]tWg5zg[/kubity:2u0sejcq]

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                                    • M Offline
                                      medeek
                                      last edited by 20 Jun 2016, 03:48

                                      Outlookers oriented horizontally with gable end truss top chord dropped:

                                      http://design.medeek.com/resources/images/truss_su133_800.jpg

                                      View model here:

                                      Link Preview Image
                                      3D Warehouse

                                      3D Warehouse is a website of searchable, pre-made 3D models that works seamlessly with SketchUp.

                                      favicon

                                      (3dwarehouse.sketchup.com)

                                      https://www.kubity.com/p/g2XGL2

                                      [kubity:nam3sa03]g2XGL2[/kubity:nam3sa03]

                                      Nathaniel P. Wilkerson PE
                                      Medeek Engineering Inc
                                      design.medeek.com

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                                      • M Offline
                                        medeek
                                        last edited by 20 Jun 2016, 03:51

                                        I like the ability to embed the kubity file directly, that makes it easy to view and convenient. The only downside is kubity does not display the edges so it is a bit hard to analyze the model fully. Is there a way to turn on edges in kubity?

                                        The 3D Warehouse has the button that allows one to view the model in the 3D WebGL viewer, so to rotate and view the model in the browser is possible.

                                        Nathaniel P. Wilkerson PE
                                        Medeek Engineering Inc
                                        design.medeek.com

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                                        • facerF Offline
                                          facer
                                          last edited by 20 Jun 2016, 05:06

                                          Medeek,

                                          I put your question to the Kubity forum on:
                                          http://sketchucation.com/forums/viewtopic.php?f=400%26amp;t=65244%26amp;p=598242#p598242

                                          Discussion can be viewed here:
                                          http://sketchucation.com/forums/viewtopic.php?f=400%26amp;t=65244%26amp;p=598268#p598268

                                          No definitive answer yet.

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