Author Topic: Truss Calculators  (Read 122573 times)

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Offline Medeek

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Re: Truss Calculators
« Reply #575 on: April 15, 2017, 07:28:25 AM »
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"
Nathaniel P. Wilkerson, P.E.
Designer, Programmer and Engineer

Offline Medeek

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Re: Truss Calculators
« Reply #576 on: April 27, 2017, 09:06:24 PM »
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.

Nathaniel P. Wilkerson, P.E.
Designer, Programmer and Engineer

Offline Medeek

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Re: Truss Calculators
« Reply #577 on: April 29, 2017, 12:50:10 PM »
**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".











View model here:

https://3dwarehouse.sketchup.com/model/2032fed3-cb9b-40c4-80b1-be1009b3f022/Residence-8
« Last Edit: April 30, 2017, 10:01:40 AM by Medeek »
Nathaniel P. Wilkerson, P.E.
Designer, Programmer and Engineer

Offline Adam Roby

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Re: Truss Calculators
« Reply #578 on: April 29, 2017, 06:10:57 PM »
The center would make for a great water catchment through....   :)

Offline ChugiakTinkerer

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Re: Truss Calculators
« Reply #579 on: April 29, 2017, 11:00:51 PM »
I'm thinking a koi pond would go perfectly there.
My cabin build thread: Alaskan remote 16x28 1.5 story

Offline Medeek

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Re: Truss Calculators
« Reply #580 on: April 30, 2017, 08:53:57 PM »
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.

Nathaniel P. Wilkerson, P.E.
Designer, Programmer and Engineer

Offline Medeek

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Re: Truss Calculators
« Reply #581 on: May 13, 2017, 08:15:33 AM »
I'm trying to figure out the correct way to frame the stairwell as it joins up with the floor diaphragm above. 



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.


https://3dwarehouse.sketchup.com/model/c44b3423-611d-4dac-be93-4cf1cc072891/Stairs-1

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?
Nathaniel P. Wilkerson, P.E.
Designer, Programmer and Engineer

Offline Medeek

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Re: Truss Calculators
« Reply #582 on: May 13, 2017, 11:51:13 AM »
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.











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.
Nathaniel P. Wilkerson, P.E.
Designer, Programmer and Engineer

Offline Don_P

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Re: Truss Calculators
« Reply #583 on: May 13, 2017, 01:31:05 PM »
Just some quick view observations. I would try to set the rimboard at the top of the stairs on the cross wall containing the doorway underneath. Is there a reason not to? At the foot of the stairs I would use an lvl... all that means is I don't know the design values for rimboard and am conservative though. Fine with it otherwise.

The door rough opening is 36" which corresponds to a 2-10 door, non existent size, drop to a 2-8 door and a 34" RO and the framing should work better.

In the office I'd move the vent by the door. A kitchenette (sink, micro and coffeepot space) and bath would be nice but drives up cost.

Offline Medeek

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Re: Truss Calculators
« Reply #584 on: May 22, 2017, 10:54:52 PM »
All the end details are working.  This is an example of a Mansard Parapet truss with 5 panels and different overhangs:



Now I just need to work on the plates and advanced options.
Nathaniel P. Wilkerson, P.E.
Designer, Programmer and Engineer