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3D Truss Models

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  • M Offline
    medeek
    last edited by 15 Mar 2018, 15:43

    I am trying to get my hands on some shop drawings for a dutch gable truss set. I would like to work on adding this truss set into the plugin this weekend if possible.

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

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    • M Offline
      medeek
      last edited by 17 Mar 2018, 03:19

      Two different ways to truss out a dutch gable roof:

      http://design.medeek.com/resources/images/truss_su354_800.jpg

      http://design.medeek.com/resources/images/truss_su355_800.jpg

      The first method involves a wailing plate attached to the side of the girder truss. This appears to be the preferred method of construction in Australia.

      The second method employs vertical studs on the gable end portion (upper half) of the girder truss. What is not entirely clear to me is how the joint comes together at the top chord where the horizontal member (at the top of the jacks) meets the vertical and diagonal web of the girder truss.

      I could really use a shop drawing (2D) of this particular configuration.

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

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      • M Offline
        medeek
        last edited by 18 Mar 2018, 18:18

        Version 2.1.8 - 03.18.2018

        • Enabled the "Edit Floor Assembly" function for all I-Joist floors (imperial and metric units): TJI, BCI, LPI, Red-I, PKI.

        http://design.medeek.com/resources/images/truss_su356_800.jpg

        Now I just need to get the floor framed opening feature working and then this module might actually be useful.

        Realize that any manual edits made to the floor assembly are blown away when you use the edit function. It is essentially re-drawing the entire floor assembly, the same goes for the roof truss assembly edit feature.

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

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        • M Offline
          medeek
          last edited by 19 Mar 2018, 14:15

          Spending some time the last couple of days thinking about the floor module (floor trusses, I-joists, solid sawn joists).

          The obvious 800 lbs gorilla is the ability to easily add openings into these floors. The other missing element is the ability to create a polygon shaped floor (something beyond a rectangle outline).

          With regards to polygon shaped geometry I've already done the heavy lifting when I programmed the foundation plugin to generate polygon shaped layouts (slab and stemwall). The details in trimming the joists is also mostly figured out since my rebar and mesh routine for slabs utilizes a function that will form the basis for this function. It is really just a matter of finding the time and then digging into the code deep for a solid 12+ hour period (uninterrupted).

          These two issues are my main focus the next week or two. If I can address both as well have the edit function work seamlessly with both then I will have created an actual functional floor module.

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

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          • M Offline
            medeek
            last edited by 19 Mar 2018, 17:39

            I have a lot of people recently asking me about features that are or are not included in the plugin. Granted my documentation is still in disarray, especially the manual, but I would strongly suggest doing a search in the Changelog if you are interested in a particular feature and would like to check if it has been implemented yet:

            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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            • M Offline
              medeek
              last edited by 23 Mar 2018, 01:31

              I've been looking at adding in the ability to handle dual pitch hip roofs:

              http://design.medeek.com/resources/images/truss_su357_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)

              The first thing that jumps out at me is the jack rafters do not line up when the pitches are different. Also if the overhang is the same and the fascia is the same height then the top plate will be a different height for the different pitches.

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

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              • P Offline
                pbacot
                last edited by 23 Mar 2018, 05:39

                Yeah irregular pitch roofs are kind of tricky. They occur nevertheless.

                MacOSX MojaveSketchUp Pro v19 Twilight v2 Thea v3 PowerCADD

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                • jujuJ Offline
                  juju
                  last edited by 23 Mar 2018, 12:23

                  @medeek said:

                  I've been looking at adding in the ability to handle dual pitch hip roofs

                  That'll be neat! Just a quick question (or two), are all existing options/functions (as relevant) ready and implemented across all truss types? Manual?

                  Save the Earth, it's the only planet with chocolate.

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                  • M Offline
                    medeek
                    last edited by 23 Mar 2018, 14:07

                    I am still adding advanced options and the edit function to each truss type and floor type. Some are further along than others, but progress is steady.

                    The manual is currently way down on the todo list, once the plugin matures further it will rise to the top.

                    With dual pitch hip roofs technically one could have a different pitch for all four sides (the most general case). I should probably try to code this most general case then all the rest simply fall out of it.

                    http://design.medeek.com/resources/images/truss_su358_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)

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

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                    • M Offline
                      medeek
                      last edited by 24 Mar 2018, 10:53

                      It is certainly an interesting puzzle. Calculating the commons, jacks and hip rafters is not a problem, I can figure that out. The one item that has me though is the fact that if each pitch is different and assuming the same overhang all the way around and the same birdsmouth cut then the top plate of each wall will need to be slightly different. Again I can make that adjustment for each side of the roof. The real question then is what to do with the birdsmouth cut of the hip rafters? Which wall height does one use?

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

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                      • topic:timeago-later,about a month
                      • pilouP Offline
                        pilou
                        last edited by 1 May 2018, 22:07

                        Not exactlly truss house but... 😄

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

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                        • topic:timeago-later,26 days
                        • M Offline
                          medeek
                          last edited by 28 May 2018, 03:49

                          Version 2.1.9 - 05.27.2018

                          • Replaced the 64 bit SketchUp check in the installation module to fix an incompatibility issue with SketchUp 2014.
                          • Added additional wall cladding materials in the sheathing tab of the global settings.
                          • Fixed a bug in the top level assembly method of the roof truss module.

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

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                          • topic:timeago-later,23 days
                          • M Offline
                            medeek
                            last edited by 20 Jun 2018, 01:06

                            Version 2.2.0 - 06.19.2018

                            • Sub-groups within roof and floor truss assemblies can be made persistent by naming these groups or component instances to (custom1, custom2, custom3, etc...), also all other user defined geometry (ie. faces, text, lines and dimensions) are also retained when the assemblies are regenerated by the plugin.

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

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                            • topic:timeago-later,25 days
                            • M Offline
                              medeek
                              last edited by 15 Jul 2018, 04:37

                              I don't have a half hip (rafter roof) setup yet however there is probably a workaround by combining a gable with a hip and then using the trim tool to manually trim some of the rafters, however I haven't really tried this at least not for a real design.

                              I took about 10-15 minutes and tried creating a half hip with a gable and hip roof as primitives. Using the trim tool made it fairly easy to clean up the rafters, see results 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)

                              Since the end result is not parametric you will want to be sure that you have all of your rafter depths, overhangs etc... set before you dive into the manual editing of such a roof.

                              This is obviously a painful and slow process. Conclusion, I need to add in a half hip rafter roof.

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

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                              • topic:timeago-later,2 months
                              • M Offline
                                medeek
                                last edited by 25 Sept 2018, 16:02

                                Version 2.2.0b - 09.25.2018

                                • Fixed a bug so that structural outlookers can be enabled without utilizing a gable end truss.

                                Technically this should not be allowed since structural outlookers typically require a dropped top chord and currently the only way to achieve a dropped top chord is with a gable end truss (option enabled).

                                However, since I am not strictly disallowing it I provided some logic so that the appropriate parameters are set so that this particular state is possible. Previously, the gable end truss routine set some required parameters that the structural outlookers were dependent on. Now the outlooker algorithm will set those parameters if they are not previously set by the gable end truss algorithm.

                                This is a fairly minor fix/patch.

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

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                                • topic:timeago-later,10 days
                                • M Offline
                                  medeek
                                  last edited by 5 Oct 2018, 21:46

                                  Version 2.2.1 - 10.05.2018

                                  • The trim tool now allows for multiple trim operations once a trimming plane is selected.
                                  • Pressing the ESC key will reinitialize the trim tool during multiple trim operations, space bar will terminate.
                                  • The trim tool will now trim components as well as groups.

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

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                                  • topic:timeago-later,9 days
                                  • M Offline
                                    medeek
                                    last edited by 15 Oct 2018, 06:41

                                    Version 2.2.2 - 10.14.2018

                                    • Name of plugin changed to "Medeek Truss".
                                    • Updated the licensing system to include a 30 day limit of the trial version.
                                    • Updates to the HTML pages of the global settings.

                                    This next week I plan on returning to the multi-pitch hip roof and start back up where I left off a few months ago. I am also going to be adding in the custom material manager so that the truss plugin has the same capabilities as the wall plugin.

                                    After that the next big push is to make all of the rafter roofs parametric with HTML based edit menus similar to the common truss edit menu.

                                    While all this is going on I would also like to complete the stair module of the wall plugin. A lot of things to juggle right now.

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

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                                    • M Offline
                                      medeek
                                      last edited by 17 Oct 2018, 05:49

                                      Version 2.2.2b - 10.16.2018

                                      • Updated the "Edit Truss Assembly" menu so that it properly loads default values when advanced options are expanded.
                                      • Added a user definable name to truss assemblies that will be utilized in the future options and upgrades.

                                      A number of other "under the hood" updates (to numerous to list) were also incorporated to bring the code more in line with the wall plugin and its more efficient and modular organization scheme.

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

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                                      • topic:timeago-later,9 days
                                      • M Offline
                                        medeek
                                        last edited by 26 Oct 2018, 07:58

                                        Version 2.2.3 - 10.26.2018

                                        • Added a Custom Material Library/Manager in the Materials tab of the Global Settings.
                                        • Enabled custom materials for wall sheathing, wall cladding, roof sheathing and roof cladding in the HTML wall draw and edit menus for common trusses.
                                        • Enabled the ability group materials and control which drop down menu they will appear in.
                                        • Added an SKM file import utility to the Material Library.
                                        • Default wall sheathing and wall cladding materials brought in line with options available in wall plugin.

                                        http://design.medeek.com/resources/images/truss_su360_800.jpg

                                        http://design.medeek.com/resources/images/truss_su359_800.jpg

                                        Note the various wall sheathing options that are brought over from the wall plugin (ie. Tyvek, Zip Systems, Plywood, Densglass etc..)

                                        Also note that the custom and expanded materials selection is only available for common truss shapes (ie. common trusses, scissor trusses etc...). I have not yet implemented the new system for other truss shapes and rafter roofs, that is work for yet another day.

                                        There is still a tremendous amount of work that needs to be done with this plugin. Many of the specialty truss shapes do not even have advanced options available to them yet. All I can do is keep hacking away at it and maybe one day I will have the resources to really push this thing along.

                                        http://design.medeek.com/resources/images/truss_su361_800.jpg

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

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                                        • M Offline
                                          medeek
                                          last edited by 26 Oct 2018, 15:22

                                          Version 2.2.3b - 10.26.2018

                                          • Fixed a bug in the attribute library for common trusses.

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

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