Truss Plugin/Extension

April 15, 2017, 8:23 am

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@medeek wrote:

Then of course to further complicate matters there is the double bobtail truss which is really nothing more than a raised heel truss with unequal heel heights

So rather than add in a completely new category of trusses I suppose I could just allow the user to specify a heel height for both the left and right side of the common truss. Currently the first menu has the option for a raised heel which is then applied to both sides of the truss. I think I could just update to be:

Raised Heel Left: YES/NO "Defaults to NO"
Height Height Left (in.): "Defaults to 12" if no user entry"
Raised Heel Right: YES/NO "Defaults to NO"
Heel Height Right (in.): "Defaults to SAME AS LEFT"

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Truss Plugin/Extension

April 27, 2017, 10:05 pm

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@medeek wrote:

Version 1.8.8 - 04.28.2017
- Added energy/raised heels for mod fan truss (3 variant: wedge, slider and vertical w/ strut).
- Metal plate connectors now enabled for mod fan trusses.

truss_su209_800.jpg800x500

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Truss Plugin/Extension

April 29, 2017, 8:58 am

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@medeek wrote:

Fun with Roofs - Episode 1

My 9 year old son took one look at this roof and then said "Don't build this in Florida, you'll create a sink hole".

truss_su210_800.jpg800x500

View model here:

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Truss Plugin/Extension

April 30, 2017, 9:48 pm

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@medeek wrote:

Version 1.8.9 - 05.01.2017
- Added energy/raised heels for triple fink truss (3 variant: wedge, slider and vertical w/ strut).
- Metal plate connectors now enabled for triple fink trusses.

truss_su215_800.jpg800x500

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Truss Plugin/Extension

May 13, 2017, 9:17 am

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@medeek wrote:

I'm trying to figure out the correct way to frame the stairwell as it joins up with the floor diaphragm above.

truss_su220_800.jpg800x500

It's hard to show exactly what I mean with sectional views, the best thing is to view the 3D model and you will see what I am talking about.

I am working on the polygon and hole tool for I-Joist and Solid Sawn floors. When you actually frame out this opening would you just use rimboard around the perimeter as I have shown?

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Truss Plugin/Extension

May 13, 2017, 12:47 pm

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@medeek wrote:

I've got to fix my wife's computer today so that will probably stop me from getting any real meaningful work done on the plugins but at least I've been able to throw together a first draft for the office I want to build. Any thoughts on improving the design, sometimes once you get an idea in your head it is hard to see outside the box.

MEDEEK_OFFICE4.jpg800x500

MEDEEK_OFFICE3.jpg800x500

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I haven't shown the doors or the front porch which will probably be quite small and pressure treated lumber.

• 32'x24'
• 5:12 or 6:12 roof with asphalt shingles
• two rooms
• 9' ceilings
• stemwall foundation with crawlspace
• carpet throughout
• 5/8" wallboard
• 3068 doors, (1) 4040XO, (3) 5040XO
• 11-7/8" I-Joists at 16" o/c
• studs DF No. 2, 2x6 @ 16" o/c
• sheathing will probably be 1/2" plywood, I don't like OSB in our climate.
• Siding Hardiplank or cedar siding, my budget may call for T11 though.
• Electric wall cadet heaters
• 50 AMP sub-panel from house
• 16" overhangs at eaves and gables with gutters and downspouts and 4" drain lines away from building.

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Truss Plugin/Extension

May 14, 2017, 7:35 am

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@gkernan wrote:

Since you like details I thought your stairs could use some details as well.

There are 2 types of stairs here. One with cut stringers and one with housed stringers. Both have glue blocks. The housed stringers are routed and wedged.

The stairs are narrower than your opening to allow for drywall. If the real stair goes in before drywall then I provide a 3/4" thick ledger to fasten the stringer securely to the studs (I hate stairs that squeak)

two stairs.skp (251.6 KB)

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Truss Plugin/Extension

May 14, 2017, 3:53 pm

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@medeek wrote:

I've never actually seen housed stringers in real life, only in textbooks.

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Truss Plugin/Extension

May 16, 2017, 5:52 pm

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@gkernan wrote:

I've built lots of these simple stairs.

Here is a stair I've built a few times. This one is curved and straightens out at the wall stringer. It has a cut stringer on the inside and a housed (wedged) stringer on the outside.

The progressive flair keeps the runs consistent without any change of pitch. This stair has solid oak treads and bent oak plywood for risers and stringers. 1/8" oak veneer for the tops and bottoms of the stringers.

Curved Flare wth Volute.png956x720 42 KB

Even the bottom is finished.

Curved Flare Backside.png560x602 16.2 KB

The oak nosings are solid, and mitered - fitted to the treads.

Crved Flair with mitered returns.png973x531 22.1 KB

And the stringers are mitered to fit the risers and routed to fit the treads and risers

Curved Flared details.png845x697 21.3 KB

Sorry - I corrected 1 wrong image

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Truss Plugin/Extension

May 16, 2017, 6:26 pm

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@medeek wrote:

Wow, how do you actually make the curved stringer?

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Truss Plugin/Extension

May 17, 2017, 7:02 am

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@gkernan wrote:

It is a process.
- After the client has signed off on the design I complete all the math.
- Then we layout the shape of the walls so we can build a bending form
- Next we build the forms - 1 for the inside stringer and 1 for the outside stringer.
- The next step is to cut all the required lamination material that makes up the stringers and the handrail.
- Then layout the stringer on the the skin for each of the stringers.
- Glue up the stringers
- Once the glue has sufficiently dried then clean up the stringers and rout them.
- After all the parts are milled then assemble the stair.

Here are the bending forms complete with 3/4" thick cauls which help spread out the clamping pressure and provides accurate placement of the stringer's glue lams and protects the thin skin.

image.png742x714 64.6 KB

image.png783x724 88.5 KB

Here is the layout of the (flattened) stringer for an open riser freestanding stair. These treads are 2 1/4" thick with a 1" nosing and have a 1/2" bullnose for carpet.

image.png778x911 12.4 KB

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Truss Plugin/Extension

May 17, 2017, 7:13 am

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@gkernan wrote:

Here is the assembled stair. Notice that the treads have a partial riser to meet building code. You can't have more than a 4" gap between the treads.

image.jpg753x682 128 KB

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Truss Plugin/Extension

May 17, 2017, 7:27 am

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@gkernan wrote:

I've built lots of these stairs that we call frame ups. Getting the math right is critical. The handrail is glued up on site using metal brackets after the house is heated.

image.png1198x836 149 KB

The tread and riser assemblies are completed in the shop. The curved plates and Drywall blocking are also made in the shop. The shop work takes about a day. The site work to get this far takes 2 guys each a full day.

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Truss Plugin/Extension

May 17, 2017, 10:15 am

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@Anssi wrote:

I'm impressed. Lovely to see the work of someone who knows his job.

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Truss Plugin/Extension

May 22, 2017, 11:53 pm

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@medeek wrote:

All the end details are working. This is an example of a Mansard Parapet truss with 5 panels and different overhangs:

truss_su221_800.jpg800x500

Now I just need to work on the plates and advanced options.

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Truss Plugin/Extension

May 26, 2017, 7:49 am

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@medeek wrote:

I'm still working on the pitched and monoslope option. I will probably release this update without having the advanced options and plates enabled since those items are nice but not a necessity and can be added at a later date.

The next two big items that I would like to tackle is the hip trusses and the timber trusses both of these would be a welcome addition to the plugin.

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Truss Plugin/Extension

May 27, 2017, 2:24 pm

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@medeek wrote:

Version 1.9.0 - 05.27.2017
- Added flat truss type, configurations: flat, monopitch, pitched.
- Metric input enabled for flat truss types.
- Added gable end trusses for flat truss types.
- Enabled the following end details for all flat truss types: None, Overhang, Cantilever, Mansard, Parapet, Mansard w/ Parapet.

truss_su223_800.jpg800x500

Plates and advanced options are still in progress. With the amount of configurations available with this truss type it will probably be a while before these next elements are in place.

The flat truss type is very configurable and with a little adjustment of parameters you can also easily create a (non-attic) gambrel truss using the flat pitched option.

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Truss Plugin/Extension

May 27, 2017, 4:43 pm

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@medeek wrote:

Here is an example of a small commercial building with a flat truss roof (parapet):

truss_su224_800.jpg800x500

Download model here:

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Truss Plugin/Extension

May 27, 2017, 7:10 pm

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@medeek wrote:

The flat truss is the first new truss type added to the plugin in 11 months. This brings the total number of truss types to approximately twenty two depending on how you classify the variants of the flat truss:

truss_su225_800.jpg800x500

View model here:

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Truss Plugin/Extension

May 28, 2017, 2:34 am

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@medeek wrote:

The flat double pitched truss allows for a user driven asymmetric ridge location as well as differing left and right heel heights. This opens up virtually any possible truss geometry even a negative pitch if one is so inclined:

truss_su226_800.jpg800x500

truss_su227_800.jpg800x500

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