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    3D Truss Models

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    • gullfoG Offline
      gullfo
      last edited by

      one consideration - a "half truss" for the section we're removing trusses - as the opposite roof section will still need a rafter at least, and potentially a cross-tie into the ridge beam on the doghouse?

      Glenn

      http://www.runnel.com

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      • medeekM Offline
        medeek
        last edited by

        Tutorial 21: Attic Trusses (14:26 min.)

        A brief overview and demo of the Gable Wall Cut option and the selective truss removal feature.

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

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        • medeekM Offline
          medeek
          last edited by

          Version 3.2.6 - 06.22.2023

          • Enabled the "Edit Truss Assembly" function for all gambrel attic trusses.
          • Enabled a gable wall cut for gambrel attic trusses.
          • Enabled a feature to selectively remove specific trusses from gambrel attic truss assemblies.

          http://design.medeek.com/resources/trussplugin/images3/truss_su787_800.jpg

          http://design.medeek.com/resources/trussplugin/images3/truss_su788_800.jpg

          There are still a number of advanced options that need to be completed for this truss type, namely soffit and fascia need to be added.

          The ability to edit this truss type is a fairly significant upgrade.

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

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          • gullfoG Offline
            gullfo
            last edited by

            more thoughts on this - if you divide the trusses into parts - parta = main remaining assembly after section removal, part b = the vert roof (in this example), and part c = "flat roof" (in this example). and flip the truss (if possible) so only part of it needs to be componentized.

            then you would have the trusses partly available for roof sections which would not have openings. the rest of the opening geometry would have to be manually assembled as part of adding the doghouse, access door etc.


            ideas for trusses0002.jpg


            ideas for trusses0001.jpg

            Glenn

            http://www.runnel.com

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            • medeekM Offline
              medeek
              last edited by

              Version 3.2.7 - 06.26.2023

              • Fixed a bug with the truss removal feature.
              • Enabled a feature to selectively remove specific trusses from common and monopitch truss assemblies.

              http://design.medeek.com/resources/trussplugin/images3/truss_su789_800.jpg

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

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              • medeekM Offline
                medeek
                last edited by

                Version 3.2.7b - 06.28.2023

                • Fixed a minor bug with the truss removal feature for all truss types.

                *Note: This is a critical bug fix for common, monopitch, attic and gambrel attic trusses.

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

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                • medeekM Offline
                  medeek
                  last edited by

                  Version 3.2.8 - 07.05.2023

                  • Enabled a ridge centering option for asymmetric gable rafter roofs.
                  • Enabled a ridge centering option for asymmetric hip rafter roofs.

                  http://design.medeek.com/resources/trussplugin/images3/ridge_center.gif

                  http://design.medeek.com/resources/trussplugin/images3/truss_su794_800.jpg

                  I think the non-centered ridge is the more correct of the two, but if you do want the centered ridge then it is also an option.

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

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                  • medeekM Offline
                    medeek
                    last edited by

                    Tutorial 22: Asymmetric Roof Framing (8:17 min.)

                    Centered vs. Non-centered ridges for asymmetric rafter roofs.

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

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                    • medeekM Offline
                      medeek
                      last edited by

                      Tutorial 23: Licensing and Upgrades (11:59 min.)

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

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                      • medeekM Offline
                        medeek
                        last edited by

                        Tutorial 24: Complex Roof Discussion and Limitations (10:43 min.)

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

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                        • medeekM Offline
                          medeek
                          last edited by

                          Version 3.2.9 - 08.28.2023
                          Fixed a critical bug with the truss removal feature for truss sets.

                          !!!! CRITICAL BUG FIX !!!!
                          I highly recommend upgrading from versions 3.2.7 and 3.2.8.

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

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                          • medeekM Offline
                            medeek
                            last edited by

                            Version 3.2.9b - 08.28.2023 thru 08.29.2023

                            • Fixed a critical bug with the hip rafter roof module.

                            Unfortunately I never noticed this error/bug because I usually test the plugin with the advanced options turned on automatically. If the advanced options are turned off and a hip roof is attempted and error will be thrown. This bug fix addresses that issue. I highly recommend upgrading to this latest version.

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

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                            • medeekM Offline
                              medeek
                              last edited by

                              Version 3.2.9c - 08.30.2023

                              • Fixed the non-orthogonal rafter framing bug for complex roofs.

                              http://design.medeek.com/resources/trussplugin/images3/truss_su795_800.jpg

                              I think I have finally resolved the confounded non-orthogonal rafter framing issue (it has been almost two years). It turns out the fix was simply replacing a complex piece of logic with two lines of code, sometimes simple is better.

                              I highly recommend updating to this latest release. I apologize that it has taken this long to rectify the issue, I was made aware of it about 18 months ago but it has taken me a while to circle back and determine the cause and then the solution. Thank-you everyone for your patience.

                              P.S.
                              After testing non-orthogonal roofs this afternoon I realized that it would be handy to have the ability to custom offset the rafter spacing for each roof plane. Sometimes the algorithm is not smart enough to correctly position the rafter exactly where one might want them. I will give this some additional consideration.

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

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                              • gullfoG Offline
                                gullfo
                                last edited by

                                or you'd run a "nailer" rafter between them for the rafters to attach too as expecting them to line up o.c. with differing roofs is low. if you were manually building it, you'd want a common nailer along that line to attach to while keep o.c. spacing. more complex roofs - each roof section is its own assembly if the single common nailer doesn't work.

                                Glenn

                                http://www.runnel.com

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                                • medeekM Offline
                                  medeek
                                  last edited by

                                  Version 3.3.0 - 08.31.2023

                                  • Added a rafter offset parameter for complex roof framing.
                                  • Fixed a minor bug with complex roof framing for half hip roofs set to custom pitches.

                                  http://design.medeek.com/resources/trussplugin/images3/truss_su796_800.jpg

                                  The rafter offset parameter will now allow the user to offset the rafter framing any custom amount (positive or negative) for each roof plane independently.

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

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                                  • medeekM Offline
                                    medeek
                                    last edited by

                                    First look at a complex roof with the hips, flying hips and valleys drawn. The framing module still has quite a ways to go but at least this is a start on these elements:

                                    https://global.discourse-cdn.com/sketchup/original/3X/f/3/f3cbc0d8ad266ba2322be0b5a3950a074a814a45.jpeg

                                    truss_su799_800.jpg

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

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                                    • medeekM Offline
                                      medeek
                                      last edited by

                                      Version 3.3.1 - 09.03.2023

                                      • Added a hip, valley and flying hip rafters to the complex roof framing module.

                                      http://design.medeek.com/resources/trussplugin/images3/truss_su802_800.jpg

                                      The first thing you will notice is that the upper ends of the hip and valley rafters are not correctly trimmed, only the bottom ends. Also flying hips are not trimmed on their upper or lower ends. The trimming algorithm for these rafters is the next thing on my todo list.

                                      Unlike the lower end trimming, the upper end will require a much more sophisticated algorithm so it may take some time. The problem really is that there a number of possibilities for termination and the plugin needs to be be able to check for all of those possibilities. No one said complex roof are easy.

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

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                                      • medeekM Offline
                                        medeek
                                        last edited by

                                        Version 3.3.1b - 09.04.2023

                                        • Refined the framing algorithm for hip, valley and flying hip rafters.

                                        http://design.medeek.com/resources/trussplugin/images3/truss_su804_800.jpg

                                        All of the major framing members are now being drawn however the trimming of certain rafters is still not quite correct, further refinement and correction will be necessary.

                                        I've also noticed that with certain large roof planes an occasional stray edge is generated (or left behind when the roof primitive is created), I will need to look into this further and rectify the issue. It does not appear to be a critical error but it does effectively split the roof plane into to separate faces which then makes the plugin treat the roof plane as two separate faces.

                                        With the flying hips terminating adjacent to valley rafters I'm not entirely sure how that is typically framed.

                                        Please download and test this latest release and then email me comments or suggestions directly.

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

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                                        • medeekM Offline
                                          medeek
                                          last edited by

                                          Version 3.3.1c - 09.05.2023

                                          • Minor bug fix within the rafter framing module for complex roofs.

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

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                                          • medeekM Offline
                                            medeek
                                            last edited by

                                            Version 3.3.1d - 09.09.2023

                                            • Fixed a bug within the global settings for complex roofs.
                                            • Updated the straight skeleton algorithm to better remove redundant edges within roof planes/faces.
                                            • Improved the robustness of the complex roof module (framing and cladding) for specific cases.

                                            http://design.medeek.com/resources/trussplugin/images3/truss_su806_800.jpg

                                            The complex roof module is now a bit more robust than it was and should be able to handle more cases than it did previously.

                                            However there still does exist the special cases where the fascia line is not all on one level that is still not possible to draw. The discussion on that topic is presented in this video:

                                            Hip and Ridge is still pending. Previously I was unable to fully work out the algorithm in order to deal specifically with flying hips. I will need to give this another hard look and see if my topological problem solving skills have improved since 2021.

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

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