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    Foundation Plugin

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    • medeekM Offline
      medeek
      last edited by

      Some common configurations of concrete columns:

      http://design.medeek.com/resources/images/foundation_su43_800.jpg

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

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      • medeekM Offline
        medeek
        last edited by

        A slightly darker version with shading pops out a little more:

        http://design.medeek.com/resources/images/foundation_su44_800.jpg

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

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        • D Offline
          db11
          last edited by

          In our Passivhaus builds, this is the preferred foundation type for several reasons.

          I think you would be surprised at the EPS insulation thickness under-slab... up to 14". Of course, this varies considerably with different climate zones. (We are in Quebec with winters where -40° is not unexpected)

          There are modular slab insulation systems for FPSF. Iso-Slab is a Quebec-based one: http://www.iso-slab.com. Their web-site has technical info on these systems that may be of interest to you.

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          • medeekM Offline
            medeek
            last edited by

            I've had a request for adding the option of insulation around a slab on grade, in short a frost protected shallow foundation (FPSF).

            This should not be too hard to add in. There are a number of resources online I will study to come up with the most standard configuration as possible.

            Are there any particular things anyone would like to see with regards to FPSF insulation.

            The typical installation per the 2015 IRC:

            FPSF.jpg

            The NAHB has an upated publication at this link:

            403 Forbidden

            favicon

            (liteform.com)

            XPS vs. EPS? Not that this will affect the plugin but I am curious which is preferred by those who commonly install these types of systems.

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

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            • medeekM Offline
              medeek
              last edited by

              An FPSF with 2" foam insulation along the wall and vertically. 2.5" foam insulation at the corners with the following horizontal dimensions:

              A = 12"
              B = 24"
              C = 40"

              http://design.medeek.com/resources/images/foundation_su45_800.jpg

              The rectangle foundation is easy, the polygon shaped foundation will be more challenging.

              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)

              One thing to note is that if dimensions A or B exceed 24" then some form of protection for the horizontal insulation is required (ie. conc. slab, pavement, PT plywood).

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

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              • medeekM Offline
                medeek
                last edited by

                An irregular shaped FPSF, note the 135 deg. corners. Once this angle becomes greater than 135 degrees I would probably just treat it the same as a straight wall.

                http://design.medeek.com/resources/images/foundation_su46_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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                • medeekM Offline
                  medeek
                  last edited by

                  Version 1.1.3 - 06.03.2017

                  • Added "FPSF" option to rectangular slab-on-grade foundations.
                  • Added "FPSF" option to rectangular stemwall foundations.
                  • Added an insulation layer in the global settings under the "Layers" tab.

                  http://design.medeek.com/resources/images/foundation_su47_800.jpg

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

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                  • medeekM Offline
                    medeek
                    last edited by

                    http://design.medeek.com/resources/images/foundation_su48_800.jpg

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

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                    • medeekM Offline
                      medeek
                      last edited by

                      Working on the square/rectangle spread footing tool:

                      Post Footing

                      I will start with wood posts as an option with the following sub-options for the wood post:

                      Post Size: 4x4, 4x6, 6x6, 6x8, 8x8
                      Post Height (in.)
                      Post Base: None, ABA, ABU, ABW, CBSQ
                      Post Cap: None, CCQ, ECCQ
                      Post Rotation: 0, 90, 180, 270

                      I also plan on having the option for steel posts with the following sub-options:

                      Post Size: HSS4x4x1/2, HSS4x4x3/8, HSS 4x4x1/4, HSS3x3x3/8 etc... (round and square tube)
                      Post Height (in.)
                      Base Plate Size (in.) - square shape L x L
                      Base Plate Thickness (in.)
                      Base Plate Hole Dia. (in.): 1/4, 3/8, 1/2, 5/8 (4 bolts per baseplate)
                      Vert. Offset (in.) - for non-shrink grout
                      Post Cap: Not sure what to do with this yet.
                      Post Rotation: 0, 90, 180, 270

                      http://design.medeek.com/resources/images/foundation_su49_800.jpg

                      http://design.medeek.com/resources/images/foundation_su50_800.jpg

                      I've been contemplating using the Simpson Strong-Tie post caps and bases as provide in the warehouse but I'm worried that the polygon count is too high. I may have to generate my own dumbed down versions.

                      http://design.medeek.com/resources/images/foundation_su51_800.jpg

                      My 13 year old daughter asked, "What is this for? What good is it?". I replied, "It is good for all sorts of things, just like a Thneed." Then I proceeded to discuss decks, porches, carports etc...

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

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                      • medeekM Offline
                        medeek
                        last edited by

                        Added "FPSF" option to polygon slab-on-grade foundations:

                        http://design.medeek.com/resources/images/foundation_su52_800.jpg

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

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                        • jujuJ Offline
                          juju
                          last edited by

                          Can you do that with the option of putting it (as a vertical component only) on the inside of the foundation wall? It may be of use in climates that isn't as cold and you have the option of putting it either inside or outside of the foundation plinth wall.

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

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                          • medeekM Offline
                            medeek
                            last edited by

                            @juju said:

                            Can you do that with the option of putting it (as a vertical component only) on the inside of the foundation wall? It may be of use in climates that isn't as cold and you have the option of putting it either inside or outside of the foundation plinth wall.

                            I can add another option to insulate the vertical interior face of the stemwall/foundation wall.

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

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                            • medeekM Offline
                              medeek
                              last edited by

                              Working through the issues of the polygon FPSF option has helped me understand better how to deal with adjacent walls in particular non-orthogonal walls and how best to calculate the geometry at their intersections.

                              This has me primed for further development of the wall plugin, so even though this feature may not have much use for most of the client base it still have served a major purpose in educating me.

                              With the tool function I am able to create lines to show preview geometry however I am wondering if there is a way to show a dimension (beyond showing the numerical value at the bottom of the SketchUp window).

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

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                              • medeekM Offline
                                medeek
                                last edited by

                                An octagon slab on grade (FPSF). Note that the angle of the corners is 225 degrees, any less and the corner treatment would go away.

                                http://design.medeek.com/resources/images/foundation_su53_800.jpg

                                Clarification on the angles:

                                Any corner with an inside angle greater than 135 degrees will not receive corner treatment.

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

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                                • medeekM Offline
                                  medeek
                                  last edited by

                                  I've had some discussion with other SketchUp users about developing the plugin for commercial use. Should I require that the user have PRO installed? A number of registered users of the plugin do not use it for commercial use, I would rather keep it open to all users but it would be easier to develop within PRO with its Boolean functions.

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

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                                  • medeekM Offline
                                    medeek
                                    last edited by

                                    Added "FPSF" option to polygon stemwall foundations.

                                    http://design.medeek.com/resources/images/foundation_su54_800.jpg

                                    Now I've thoroughly beaten the FPSF option to death, the only thing I might add in later is a global setting to change the insulation color to pink, blue or white.

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

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                                    • jujuJ Offline
                                      juju
                                      last edited by

                                      @medeek said:

                                      I've had some discussion with other SketchUp users about developing the plugin for commercial use. Should I require that the user have PRO installed? A number of registered users of the plugin do not use it for commercial use, I would rather keep it open to all users but it would be easier to develop within PRO with its Boolean functions.

                                      Unless the person using it is a registered professional (engineer, etc.) and the application is within the ambit of their qualifications / registrations and they are using it for a personally owned property I would argue that the use could be for commercial purposes, in my mind anyway.

                                      Else the works created would need to be "signed off" by a professional, in which case the lines get blurred and the commercial application / gain with the use of the extension arises...

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

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                                      • D Offline
                                        db11
                                        last edited by

                                        @medeek said:

                                        Now I've thoroughly beaten the FPSF option to death, the only thing I might add in later is a global setting to change the insulation color to pink, blue or white.

                                        Is there an option for underslab insulation? What is the range of insulation thickness available?

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                                        • medeekM Offline
                                          medeek
                                          last edited by

                                          I guess I'm not done with the FPSF option just yet. Insulation thickness is open ended you can put in as thick as you like, some areas apparently install insulation upwards of 12".

                                          How do you want the underslab insulation configured?

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

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                                          • D Offline
                                            db11
                                            last edited by

                                            In our climate, we use full underslab insulation (anywhere from 6-14") to thermally isolate the slab. In PassivHaus builds we float the house on a 12 - 14" EPS tray that totally eliminates thermal bridging through the envelope and conduction loss to the ground.

                                            Inside perimeter insulation — 2 to 4' of EPS/XPS extending inward from the footing leaving the center area uninsulated — may be sufficient in milder climate zones, and was/(still is?) common for use under basement slabs. But here, the conduction heat loss through the slab renders any material savings moot after the first winter or two of heating bills.

                                            I'll PM you a foundation drawing set for a recent build to give you an idea of our approach — not as an input for feature requests, as I realize that our approach would be considered way overboard by people unfamiliar with PH standards — but just for your interest.

                                            And if you haven't had a chance, I recommend highly that you check out the Iso-Slab website linked in an earlier post. It derives from European slab insulation systems that have been available for years there, originally developed to meet the needs of a burgeoning PH market. It will give you an idea of where building is going, even if the NA construction industry is notoriously slow and resistant to adopting new methods / better materials / higher performance standards.

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