Replies

1. 
   Medeek | Oct 10, 2015 02:20pm | #1

   Plugin for SketchUp

   I forgot to add the location of the plugin for those willing to beta test it:

   http://design.medeek.com/resources/medeektrussplugin.html

   The current trial version is not limited in any way, FYI.

   Note that this plugin only generates the geometry, it does not do any of the engineering like the Truss Designer (fink truss only).

2. 
   Medeek | Oct 12, 2015 02:10pm | #2

   I have the raised/energy heel working now for a fink truss where a vertical member and strut is required (heel height greater than 12" approx.). Still working on the wedge and slider cases, they are actually easier to calculate and program, but I figured I would tackle the difficult one first.
   

   
   

   When the angle between the strut and top chord exceeds 10 degrees I then apply a scarf cut to the strut at its centerline (try a raised heel height that exceeds 24" and you will notice the difference).
   

   
   

   Here is an example of a fink truss with a 18" raised heel. Notice there is no scarf cut at the top of the strut where it meets the top chord. 
   

   
   

   View Image

3. 
   Medeek | Oct 17, 2015 02:54pm | #3

   Attic Trusses

    This is the same truss I used in my 28'x48' garage:

    

   View Image

    

   Now I need to work on the energy heel option for this truss as well as some additional logic for attic trusses in the following span ranges 16-24 feet and 30-36 feet. 

    

   I've also been considering a similar plugin for Revit but a similar API or AutoLisp capability does not seem to exist for that software.

4. 
   Medeek | Oct 24, 2015 05:15pm | #4

   Scissor Trusses

   View Image

    

   Version 1.0.5 - 10.24.2015

   Added Scissor truss type, configurations: (2/2), (4/4).

   Metric input enabled for scissor truss types.

    

   In certain instances the scarf length of the bottom chord becomes less than the bearing length, the logic checks for these cases and inserts either a 3.5 or 5.5 heel wedge as required.

1. 
   calvin | Oct 25, 2015 05:09am | #5

   Mo

   The size of one (all) of your inserted pictures makes the type viewable by me on an iPad damn near invisable it's so small.

   it affects the rest of the posts as well.

5. 
   Medeek | Nov 05, 2015 03:06am | #6

   Deleted Post

6. 
   mark122 | Nov 07, 2015 09:00am | #7

   i prefer to stick frame but this is pretty easy to use. i do not see how this is very practical tho. It seems to just add another step to the process (adding another potential for error).

   this is what the truss manufacturer does anyway. I tell them what i need, and how i need it and they produce a truss to meet those needs. If i spend the time doing this, then turn that in to the truss company, they will still use their own manufacturing process and design method...so i have spent time that is seemily wasted.

7. 
   Medeek | Mar 12, 2016 07:35pm | #8

   Hip Roof Framing Study

    Another study of hip roof framing where unequal pitches meet at the hip. The birdsmouth cut is 3.5" for all jack and common rafters. The hip rafter is dropped and off center so that it lines up with the roof planes. The hip roof combines a 12:12 pitch with a 6:12 pitch.

    

   View Image

    

   View model here:

    

   https://3dwarehouse.sketchup.com/model.html?id=uc12480ec-9330-464b-93eb-56bc73878207

    

   I'm trying to determine if using a dropped hip rafter makes sense with unequal pitches.