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3D Truss Models

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  • M Offline
    medeek
    last edited by 30 Apr 2016, 06:57

    The updated truss yard:

    Medeek Truss Yard 3

    Sixteen different truss profiles currently available within the Medeek Truss Plugin:

    • Common
    • Monopitch
    • Attic
    • Scissor
    • Tail Bearing
    • Dual Pitch
    • Bowstring
    • Bow Barrel
    • Polynesian
    • Cambered
    • Cathedral
    • Tray
    • Mono Scissor
    • Mono Cathedral
    • Gambrel Attic
    • Floor (System 42)

    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 3 May 2016, 22:05

      I am wondering how many of your designers/architects/contractors/builders out there have used Open Joist products?

      Link Preview Image
      TRIFORCEĀ® Open Joist: Peace of Mind Underfoot

      The TRIFORCEĀ® open joist is a state-of-the-art product in the forefront of the construction industry.

      favicon

      TRIFORCEĀ® Open Joist (www.openjoisttriforce.com)

      I was thinking I might add their product line to the Floor Joist/Truss module.

      http://www.openjoisttriforce.com/wp-content/uploads/2013/12/prod-caract-ajust-img3-eng1.jpg

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

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      • M Offline
        medeek
        last edited by 11 May 2016, 08:37

        Version 1.5.6 - 05.11.2016

        • The plugin now automatically checks for updates.
        • Option added in Global Settings to adjust frequency of "check for updates" or to disable this feature entirely.

        I've also added in the Open Joist (TriForce) floor truss but it is not quite ready for release so I have disabled it until the next version release.

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

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        • J Offline
          JQL
          last edited by 11 May 2016, 10:37

          Hi again medeek,

          I haven't used open joist yet but I will.

          The only problem I see with it is that it's idea is very interesting but I think fire regulations don't allow for it to be visible.

          I might be wrong in some cases though, so I'm waiting for them to show up in front of me.

          Keep up your excellent work!

          www.casca.pt
          Visit us on facebook!

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          • M Offline
            medeek
            last edited by 11 May 2016, 10:55

            @jql said:

            Hi again medeek,
            The only problem I see with it is that it's idea is very interesting but I think fire regulations don't allow for it to be visible.

            According to recent research Open Joist trusses seem to perform better in fires than both I-Joists and MPC wood floor trusses. However, there is plenty of debate on the matter.

            http://www.brackenengineering.com/Portals/0/White%20Papers/White%20Paper%20-%20Fire-Load%20Performance.pdf

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

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            • J Offline
              JQL
              last edited by 11 May 2016, 12:59

              I'm recently dealing with a lot of heritage buildings where wood is used (I haven't found any truss similar to the ones in your impressive set yet though) and what our consultants do, so we can build with visible wood on new structures, is to over dimension them. However with such thin profiles I bet this can't be achieved.

              Do you have any take on that?

              www.casca.pt
              Visit us on facebook!

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              • pbacotP Offline
                pbacot
                last edited by 11 May 2016, 15:49

                @medeek said:

                @jql said:

                Hi again medeek,
                The only problem I see with it is that it's idea is very interesting but I think fire regulations don't allow for it to be visible.

                According to recent research Open Joist trusses seem to perform better in fires than both I-Joists and MPC wood floor trusses. However, there is plenty of debate on the matter.

                http://www.brackenengineering.com/Portals/0/White%20Papers/White%20Paper%20-%20Fire-Load%20Performance.pdf

                How is this different from the floor trusses you are now doing --or are you talking about this specific manufacturer? They seem to use OSB on part of the trusses for some reason...(Oh, I guess so you can cut to fit in the field?).

                To clarify. Isn't "open" joist just referring to the product name (and the fact that the truss system is open as opposed to a solid joist. I don't think this necessarily means it's exposed. I doubt many would leave these trusses exposed, but the fire requirement depends on the type of building and/or the floor's rating.

                MacOSX MojaveSketchUp Pro v19 Twilight v2 Thea v3 PowerCADD

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                • M Offline
                  medeek
                  last edited by 11 May 2016, 20:10

                  Sorry for all of the confusing terminology.

                  Open Joist refers to a specific product produced by Barrette in Quebec Canada.

                  There two main products are:

                  Open Joist 2000
                  Open Joist TriForce

                  The thing that makes these floor trusses different from your standard MPC wood floor truss is that they use finger jointed webs instead of metal plates. The floor trusses are made entirely of wood and glue with no metal connectors.

                  Link Preview Image
                  TRIFORCEĀ® Open Joist: Peace of Mind Underfoot

                  The TRIFORCEĀ® open joist is a state-of-the-art product in the forefront of the construction industry.

                  favicon

                  TRIFORCEĀ® Open Joist (www.openjoisttriforce.com)

                  They come in standard sizes and lengths with a field trimmable end. They are installed similar to I-Joists using a rim board at the perimeter of the floor.

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

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                  • J Offline
                    JQL
                    last edited by 11 May 2016, 20:49

                    Pbacot,

                    I meant I like them exposed not that they should be exposed.

                    www.casca.pt
                    Visit us on facebook!

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                    • M Offline
                      medeek
                      last edited by 12 May 2016, 01:41

                      Building code in the US usually requires some form of 1 hour rated covering (ie. 1/2" gypsum).

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

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                      • J Offline
                        JQL
                        last edited by 13 May 2016, 08:44

                        In here it's the same, however, if we can prove that the wooden structure will hold one hour more than needed, because of extra thickness, we don't need the covering. This can't be done with steel as heat makes it loose physical properties much faster than what happens with wood.

                        www.casca.pt
                        Visit us on facebook!

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                        • M Offline
                          medeek
                          last edited by 15 May 2016, 04:40

                          For large agricultural buildings a double inverted truss can be employed to provide a large vaulted span for machinery:

                          http://www.lakecountrytruss.ca/images/trusses/double_inverted_large.jpg

                          I am wondering if this truss type is still commonly used by anyone for this type of application and whether it would be of interest, enough for me to add it into the growing list of trusses within the plugin.

                          Also if anyone has any shop drawings they could send me that would be very helpful.

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

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                          • M Offline
                            medeek
                            last edited by 15 May 2016, 05:50

                            A quick study of a double inverted truss by taking two 24' howe trusses and joining them to form a double truss. Note that the 4:12 pitch of the original trusses is maintained and the interior vault is exactly 8:12 pitch.

                            http://design.medeek.com/resources/images/truss_su122_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)

                            My question with this configuration is how the top and bottom chords at the peak should butt up? For example should the bottom chords at the peak have a double scarf cut or a single scarf cut? Some shop drawings would help in determining what is common practice.

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

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                            • M Offline
                              medeek
                              last edited by 15 May 2016, 21:23

                              Version 1.5.7 - 05.15.2016

                              • Added Scissor truss type, configurations: (4/2, 6/4).
                              • Structural outlookers (vert. & horz.) enabled under advanced roof options for Scissor (4/2, 6/4) truss types.

                              http://design.medeek.com/resources/images/truss_su123_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 also updated the pause in the truss selector GUI from 700 ms to 400 ms. Still more work to be done with raised heels and structural outlookers for some of these configurations but its getting close.

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

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                              • M Offline
                                medeek
                                last edited by 17 May 2016, 05:41

                                Coffer Truss Algorithm:

                                http://design.medeek.com/resources/truss/GEOMETRY/COFFER1_800.jpg

                                This is assuming that the coffer span is centered on the truss. A non-centered coffer algorithm could get significantly more interesting and difficult.

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

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                                • M Offline
                                  medeek
                                  last edited by 17 May 2016, 06:23

                                  In Oct. 7 last year I asked what is a bona fide extension in response to Juju's questions. That has led to about 57 releases and quite a large effort to put together a fairly decent plugin that can actually do what it purports to do which is create some accurate trusses and/or roof geometry.

                                  I'm currently at 145 registered users with about ten times that in actual installations of the trial plugin. The number of registered users seems to have plateaued for now with maybe one or two new registrations per week.

                                  I don't know if this is because the plugin exposure is fairly saturated or it simply is not quite good enough to entice an SU user to want to purchase the full version. The plugin is still missing a lot of features and there are quite a few more truss types and roof framing types that need to get added so my hope is that that is the reason for the plateau in the last few weeks.

                                  If you have downloaded the trial version and have decided that more is needed before you are ready to upgrade to the full version please send me an email or message me with details, comments or suggestions on how I can get there. At least 40% of the current plugin is the result of requests from users so feedback has heavily factored into the development and will continue to do so.

                                  I apologize that the manual is still not complete. Over the next month I am going to try and update the existing docs and start adding more content to bring it up to speed.

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

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                                  • M Offline
                                    medeek
                                    last edited by 20 May 2016, 09:54

                                    This map shows where the Truss Plugin is being utilized:

                                    404 - File or directory not found.

                                    favicon

                                    (design.medeek.com)

                                    Note, this is only registered users and not all installations of the trial version. Also note that addresses have been dumbed down to City, State, Country so that the privacy of registered users is upheld.

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

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                                    • jujuJ Offline
                                      juju
                                      last edited by 20 May 2016, 11:16

                                      @medeek said:

                                      This map shows where the Truss Plugin is being utilized:

                                      404 - File or directory not found.

                                      favicon

                                      (design.medeek.com)

                                      Note, this is only registered users and not all installations of the trial version. Also note that addresses have been dumbed down to City, State, Country so that the privacy of registered users is upheld.

                                      interesting to see!

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

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                                      • M Offline
                                        medeek
                                        last edited by 23 May 2016, 05:59

                                        Version 1.5.8 - 05.22.2016

                                        • Added metric input for Gambrel Attic truss type.
                                        • Added a graphical user interface (GUI) for metric gambrel attic geometry input.

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

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                                        • M Offline
                                          medeek
                                          last edited by 23 May 2016, 15:29

                                          Gambrel Attic (metric) GUI

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

                                          I also show the industry standard feet-inches-sixteenths.

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

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