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Messages - Medeek

#2386
Version 1.3.6 - 03.06.2016
- Added Double Howe and Triple Howe common truss types.
- Structural outlookers (vert. & horz.) enabled under advanced roof options for Common (Double & Triple Howe) truss types.



View model here:

https://3dwarehouse.sketchup.com/model.html?id=u456fbc36-6d2e-43ed-af05-5f9ad26f89b4
#2387
I'm thinking the next thing I might tackle is an octagonal rafter roof. Something along these lines:



My time allotted to work on the plugin is very limited right now so I'm trying to decide if this would be something of interest for current and potential users of the plugin.
#2388
I find the bow barrel truss very interesting.  Its very similar to a flat truss in a lot of respects but then you essentially create pitch breaks at all the panel points and add some camber to it.



View model here:

https://3dwarehouse.sketchup.com/model.html?id=uf39ab29a-4d1b-458f-b9cb-b1bf882b9774
#2389
Version 1.3.5 - 03.04.2016
- Added Bow Barrel truss type, configurations: (8/8).
- Metric input enabled for bow barrel truss type.
- Corrected a bug with the webs of the bowstring truss type.



View model here:

https://3dwarehouse.sketchup.com/model.html?id=u754b5fc3-c3ea-48cb-9f13-24c92ae39d97

Gable end option is also available (not shown in image above for clarity) for this truss type.
#2390
Version 1.3.4 - 03.02.2016
- Corrected a bug in the metric unit template module.
#2391

28' Bow Barrel Truss (8/8) study.





View model here:


https://3dwarehouse.sketchup.com/model.html?id=ub4c69c4f-ae02-4ad8-b17b-5eecb8d31823


Gable end trusses for this type are a bit of a question right now.  I can add this one into the plugin if there is some call for it, but I may hold off until a request is made since the code will be somewhat tedious with all the separate members that make up the top and bottom chords.
#2392
Added Bowstring truss type, configurations: (8/8).



View model here:

https://3dwarehouse.sketchup.com/model.html?id=uad891cf8-30ad-4d6f-ae10-a8b7f10a2114

Initially I wasn't really sure how to lay out this type of truss, especially the webs and panel distances.  Then after some thought it occurred to me that the length of each top chord segment should be roughly equal to best approximate the circular shape of the truss.  After some checking of existing shop drawings my theory tested correct.  The length of each top chord segment is equal in length.
#2393
Version 1.3.3 - 02.28.2016
- Added Bowstring truss type, configurations: (6/6).
- Metric input enabled for bowstring truss type.



View model here:

https://3dwarehouse.sketchup.com/model.html?id=udee2767c-3da1-40b9-8d07-9e1e36989d4a

I'm not sure how common place this truss type is anymore so I will add the advanced options at a later date if requested by a user.  I can also add in other configurations with more panels if needed (ie. 8/8, 10/10).
#2394
A quick study of the general shape and layout of a 6/6 bowstring truss with different radii:

#2396
Version 1.3.2 - 02.23.2016
- Added Dualpitch truss type, configurations: (2/2-3/3).
- Metric input enabled for dualpitch truss type.
- Advanced options enabled for dualpitch truss type.



View model here:

https://3dwarehouse.sketchup.com/model.html?id=u9b6a5e53-76c4-4c9b-bce3-aaa8ffba4c36
#2397

Here is a Dual Pitch 2/2 - 3/3 truss with a 12:12 pitch and a 4:12 pitch.





Still working on the gable end trusses and the advanced options involving structural outlookers.


I will be looking at raised heel scissor trusses next, those sound challenging and interesting.  Please post or send me examples of any raised heel scissor truss examples or shop drawings.  The combined pitches of the top and bottom chord with a wedge, slider or vertical web and strut will require some serious calculations and ample logic.
#2398
Started to code in the dual pitch truss, the top chords, king post and bottom chord are there just need to add some webs:



Just an FYI, my previous post in Nov. had a sign switched in the last step of the derivation for Span 1, corrected in the plugin to a minus sign and everything is comes out perfect.
#2399
Version 1.3.1 - 02.17.2016
- New submenu item and toolbar icon added for global settings.

#2400

I've been looking at a number of garage designs recently that employ an attic or storage truss.  I'm finding that a lot of them tend to use raised heels to allow for more head room while having a lower roof pitch (ie. 6/12 - 8/12).  I'm thinking about adding in raised heels for the attic truss type in the plugin. 


A quick mock up would look something like this:





View model here:


https://3dwarehouse.sketchup.com/model.html?id=u208d64e3-ddcf-4923-8dfb-d507185fa663


Ignore the unbalance in the panel lengths, in practice and in the plugin they will be properly balanced. 


What I do have a question on is the use of a top chord splice as shown in the above image so that the overhangs do not have to be as deep as the top chord in the non-triangulated region of the truss.  I have never seen a splice used on a attic truss with a raised heel, I don't see why it can't be done but it is always nice to have a confirmation that someone else is doing this sort of thing in practice.