3D Truss Models

Re: 3D Truss Models

Postby facer » Wed Feb 21, 2018 5:14 am

Save parameters of truss type for later use (modification)

Ideally one could save the parameters for a truss type and then
install in future for another project with similar or slight variations.

Hence a library of truss types and associated details could be
created by the user for repeative projects.

This would be ideal for builders constructing repeative building types
with sight variations.
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Re: 3D Truss Models

Postby medeek » Wed Feb 21, 2018 3:12 pm

I like the idea of saved config files or templates, I will give this some more thought.
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Re: 3D Truss Models

Postby medeek » Mon Feb 26, 2018 5:47 pm

Making some good progress on the "edit" function. I will initially start with the common trusses and then once I am satisfied that those trusses are running stable I will begin to make this feature available for all other truss, rafter and floor assemblies.

I'm a little bogged down with the advanced options (there are too many) but it is just a matter of putting in the time and slogging through all of the data entry and HTML and javascript. Probably by the end of the week I should have something ready to go and I will roll a release so everyone can begin testing it.
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Re: 3D Truss Models

Postby medeek » Mon Feb 26, 2018 9:07 pm

Has anyone had much experience with SIP walls? I've been looking at the product offering of Eco Panel:

https://www.eco-panels.com/

and I am fairly curious about this product.
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Re: 3D Truss Models

Postby KrisM » Tue Feb 27, 2018 2:22 am

I'm quite familiar with SIPs. They definitely have their pluses and minuses. They certainly aren't cheap but can be quite effective if installed properly. The key here is that contrary to the suggestion from Eco Panels that low priced labour can erect their product, there better be someone on site who really knows what they are doing. I have seen some bad installs (not Eco Panel's products) and the long term implications are quite serious. While I have been a promoter of SIPs in the past, I think there are easier and cheaper ways to get good R values.
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Re: 3D Truss Models

Postby medeek » Fri Mar 02, 2018 3:32 pm

Version 2.1.6 - 03.02.2018
- Added Soffit Cut within Advanced Options for Hip Rafter Roofs.

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Re: 3D Truss Models

Postby medeek » Sat Mar 03, 2018 11:55 pm

Version 2.1.6b - 03.02.2018
- Added Soffit Cut within Advanced Options for all Shed type Rafter Roofs.
- Added gutters for all Shed type Rafter Roofs.

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Re: 3D Truss Models

Postby medeek » Mon Mar 05, 2018 5:21 pm

The edit feature is slowly coming to fruition. I've added so many advanced options to the common truss type that it is quite an ordeal to even put together the HTML form that fully encompasses all of this information and does it in an organized and neat manner. There is a possibility of 72 unique (user entered) parameters for a common truss assembly. Some of these are dependent on others, its an interesting web of dependencies (spaghetti) that must be taken into account for the edit feature to work properly. I've probably got another week just in debugging before I am ready to release the first version of this feature.
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Re: 3D Truss Models

Postby pbacot » Mon Mar 05, 2018 6:36 pm

Models look high quality. I hope you have ability for multiple Presets so that a type of roof that users use all the time can be saved.
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Re: 3D Truss Models

Postby medeek » Mon Mar 05, 2018 7:14 pm

A number of presets can be set by the user in the global settings however I have not fully implemented a "store" function that will take an entire roof configuration and store it as a preset roof assembly. This may be another feature that I add.
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Re: 3D Truss Models

Postby facer » Tue Mar 06, 2018 5:56 pm

Medeek,
..."take an entire roof configuration and store it as a preset roof assembly."

I think this will be very popular, looking forward to this function! :thumb:
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Re: 3D Truss Models

Postby medeek » Wed Mar 07, 2018 8:00 am

Version 2.1.7 - 03.06.2018
- Enabled the "Edit Truss Assembly" function for all common roof trusses (imperial units only).

To edit a roof truss assembly just right click on the assembly and select the "Edit Truss Assembly" option.

Note, that this function is only available for common trusses with imperial units (template). Metric will be next.

It seems to be working fairly robustly but I'm sure there will be some minor bugs that pop up considering the complexity of the code and the sheer numbers of variables that I am working with.

Please report any errors by using the ruby console to record the error and email it to me.

Once this feature has been out for a while and I know it is running fairly stable I will then work on updating all rafter and truss assemblies so that the user can edit them. I can already see that this will be a very useful upgrade to the plugin.
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Re: 3D Truss Models

Postby medeek » Thu Mar 08, 2018 12:21 am

Realize that the entire roof assembly is being redrawn from scratch so any manual customization will disappear. It is actually quite a bit faster than I thought it might be so I’m fairly happy with that.

I did notice that when you initially create a truss assembly without any advanced options and then enable advanced options in the edit panel it does not auto populate the various advanced option fields, I think this could use some attention.

Below is a screenshot of the edit panel:

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Re: 3D Truss Models

Postby medeek » Sun Mar 11, 2018 5:15 am

Version 2.1.7b - 03.10.2018
- Enabled the "Edit Truss Assembly" function for all common roof trusses (metric units).
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Re: 3D Truss Models

Postby medeek » Sun Mar 11, 2018 6:24 am

Tutorial 7, Edit Function and some changes to the global settings:

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Re: 3D Truss Models

Postby medeek » Sun Mar 11, 2018 7:10 pm

Version 2.1.7c - 03.11.2018
- Added ceiling gypsum and ceiling battens to cathedral trusses.





View model here:

https://3dwarehouse.sketchup.com/model/ ... ng-Battens
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Re: 3D Truss Models

Postby juju » Sun Mar 11, 2018 7:58 pm

medeek wrote:Version 2.1.7c - 03.11.2018

Not on your home website yet?
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Re: 3D Truss Models

Postby medeek » Sun Mar 11, 2018 8:31 pm

Should be up now.
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Re: 3D Truss Models

Postby medeek » Mon Mar 12, 2018 4:57 am

I've been giving some thought to framed openings in floors, see image below:



Generally, at least from what I've seen most holes in floors are either rectangular, L-shaped or U-shaped, but I guess any outline is possible.

What I've shown in the image above is LSL or LVL framing out the opening however the actual framing might be significantly different depending on what is supporting the floor below.

In some cases the rectangular opening might not be supported by bearing walls from below, in that case the two LSL boards running parallel to the joists would probably be larger beams and the headers would be hangered from these beams and would also probably be more substantial.

The point is how to make this feature flexible enough to accommodate most framed openings but at the same time keeping it as simple as possible so the user is not overwhelmed with parameters.

View model here:

https://3dwarehouse.sketchup.com/model/ ... -TJI-Floor

Any ideas would be greatly appreciated.

P.S. I am also going to make this feature editable so that the actual hole can be altered after the fact. This should be an interesting programming challenge.
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Re: 3D Truss Models

Postby medeek » Mon Mar 12, 2018 4:12 pm

Here is an example of a L-shaped opening in a floor to allow for a stairway.



Probably not the best example but I think it helps get the idea across.

Note the bearing walls supporting perimeter of the opening.
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Last edited by medeek on Mon Mar 12, 2018 7:09 pm, edited 1 time in total.
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Re: 3D Truss Models

Postby medeek » Mon Mar 12, 2018 4:25 pm

Alternatively that same opening could be framed as below:

framed_opening2.jpg


For the size of the opening one would probably use some PSL Beams rather than a couple of I-Joists but the concept is the same, compare with the previous example where the opening would probably be supported from below by bearing walls.
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Re: 3D Truss Models

Postby medeek » Thu Mar 15, 2018 2:42 pm

Version 3.1.7d - 03.14.2017
- Addresses a minor bug with the UI menu for common trusses. The overhang of the truss could be rounded to an integer value upon recreation of another truss set.

I wonder why no one else has noticed the overhang rounding issue. I just realized it is an artifact from when I had it setup to use a integer value for the overhang, which I eventually changed but I must have forgot to update the rounding function (or remove it) so that non integer values could be input.

It appears this bug only affected common trusses but I will need to go through and check each truss type to make sure the same issue was not replicated elsewhere.
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Re: 3D Truss Models

Postby medeek » Thu Mar 15, 2018 4:43 pm

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.
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Re: 3D Truss Models

Postby medeek » Sat Mar 17, 2018 4:19 am

Two different ways to truss out a dutch gable roof:





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.
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Re: 3D Truss Models

Postby medeek » Sun Mar 18, 2018 7:18 pm

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.



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.
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Re: 3D Truss Models

Postby medeek » Mon Mar 19, 2018 3:15 pm

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.
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Re: 3D Truss Models

Postby medeek » Mon Mar 19, 2018 6:39 pm

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:

http://design.medeek.com/resources/pluginchangelog.html
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Re: 3D Truss Models

Postby medeek » Fri Mar 23, 2018 2:31 am

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



View model here:

https://3dwarehouse.sketchup.com/model/ ... Dual-Pitch

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.
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Re: 3D Truss Models

Postby pbacot » Fri Mar 23, 2018 6:39 am

Yeah irregular pitch roofs are kind of tricky. They occur nevertheless.
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Re: 3D Truss Models

Postby juju » Fri Mar 23, 2018 1:23 pm

medeek wrote: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?
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