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Owner-Builder Projects / Re: KS Flint Hills 20x30 1.5 story
« Last post by NathanS on Yesterday at 07:48:20 AM »
Venting is what prevents ice dams. It's more important the more cold and snowy your climate is.

I actually came to a different conclusion than Don for where I live (lots of snow, very cold). Snow piles so deeply here that the ridge wont properly vent when it's most needed.

The code wants you to balance the area of the soffit vent with the area of the ridge vent. Don's warning about gable vents is that if they aren't big enough not enough air will be drawn through the soffits. Joe Lstiburek, the best building scientist of this generation, suggests that you want less gable/ridge venting than soffit because you do not want to depressurize the attic, which will suck hot moisture laden air into the eaves potentially causing condensation/mold/rot.

I think a continuous soffit vent, and then vent channels in rafter bays that extend to above the collar ties with gable vents would work fine. Air sealing, especially at the eaves, is extremely important, and the more R-value you can get at the location the better as well.
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Owner-Builder Projects / Re: KS Flint Hills 20x30 1.5 story
« Last post by KJones on Yesterday at 07:18:07 AM »
I guess let me restate the question.

Do I need to vent the roof, I'm seeing a lot of people say no but not as to why you shouldn't. If someone recommend a direction and why that would be great. Ridge venting is out of the question at this point.

Thanks,
3
Referral Links / Re: Foundation Plugin for SketchUp
« Last post by Medeek on September 19, 2021, 04:31:38 AM »
Now that I'm on the subject of windows it may also be useful to add in some sort of window well feature:



Window Well Options:

Type: Steel
Shape: Rectangle, Arc, Trapezoid
Width:
Projection:
Depth:
Radius:
Vertical Offset:
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Referral Links / Re: Foundation Plugin for SketchUp
« Last post by Medeek on September 18, 2021, 02:21:41 PM »
I've been thinking about adding in a Door and Window module to the polyline stemwalls.  However, I'm not very familiar with what is common practice as far window and door bucks go.

Any feedback or drawings/details would be greatly appreciated.





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Referral Links / Re: Foundation Plugin for SketchUp
« Last post by Medeek on September 18, 2021, 09:09:57 AM »
Version 1.7.7 - 09.18.2021
- Added an ICF option for stemwall steps.

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Owner-Builder Projects / Re: KS Flint Hills 20x30 1.5 story
« Last post by Don_P on September 18, 2021, 03:13:40 AM »
Things slow down when your feet leave the ground. I prefer soffit and ridge venting. Gable vents will vent and dry the upper "attic" zone but those lower areas will be stagnant.
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Referral Links / Re: Wall Plugin for SketchUp
« Last post by Medeek on September 15, 2021, 03:10:46 AM »
I've been giving the "wall sandwich" thing some serious thought the last couple of days and I think I can implement a workable system however it will drastically change the way I am currently doing things as well as break any sort of backwards compatibility with previous versions of the plugin and their models.

In the global settings I will probably have a select number of options you can choose from to build your custom wall sandwich (I will also have some standard ones pre-defined).  Interior and Exterior walls will be different in that you cannot use wainscot and cladding with interior walls.  Interior walls can be asymmetric with this new system so you can have different layers specified on each sides of the wall, unlike the current system which limits interior walls to symmetric configurations only.

Exterior Walls:

Ext. Side:

- Wainscot
- Cladding 1
- Cladding 2
- Airgap 1, 2, 3 etc...
- Sheathing 1
- Sheathing 2
- Insul 1

Int. Side:

- Gypsum 1
- Gypsum 2
- Gypsum 3
- Airgap 1,2, 3 etc...
- Sheathing 1
- Sheathing 2
- Insul 1

Interior Walls:

Ext. Side:

- Gypsum 1
- Gypsum 2
- Gypsum 3
- Airgap 1,2, 3 etc...
- Sheathing 1
- Sheathing 2
- Insul 1

Int. Side:

- Gypsum 1
- Gypsum 2
- Gypsum 3
- Airgap 1,2, 3 etc...
- Sheathing 1
- Sheathing 2
- Insul 1

The actual layering can be in any order except for wainscot which will always be the outermost layer on an ext. wall.  I'm not sure that two layers of cladding are really needed for an ext. wall but I'm just throwing it out there for now and see what sticks.

As far as the framing/wall solid is concerned I only plan on having one layer for framing, if I were to change that up to a variable number of framing layers things would get very complicated with regards to corner configurations so it is best to not get too ambitious.

The items shown are all of the possible layers for each side of the wall in question, one could theoretically enable all of them or none of them, and the number of air gaps is probably not limited.

Am I missing anything?  Thoughts? 

Your feedback now is important, once I install/implement a new wall sandwich system it will be more difficult to fundamentally change it from the form it originally takes.
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Referral Links / Re: Wall Plugin for SketchUp
« Last post by Medeek on September 15, 2021, 02:13:54 AM »
Matt Donley did a great job on putting this video together.  A concise but very informative presentation:

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Referral Links / Re: Foundation Plugin for SketchUp
« Last post by Medeek on September 14, 2021, 08:54:28 AM »
Version 1.7.6 - 09.14.2021
- Added an ICF option for polyline stemwalls.
- Added an ICF layer in the Global Settings under the "Layers" tab.
- Fixed a critical bug with custom materials that was caused by the change in the location of the plugin's data sub-folder.





View model here:

https://3dwarehouse.sketchup.com/model/0a683d20-7115-491b-afc6-3578f584c5ae/ICF-Stemwall-Foundation
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Owner-Builder Projects / Re: Garage Apartment at Redoverfarm
« Last post by Redoverfarm on September 13, 2021, 03:10:58 PM »
Well it appears that I have neglected this project from posting. Actually I have been intermittently working on it.  I have used cabinets that have been repainted and installed.  Only lowers as the attic truss prevented any walL or uppers.  I ordered countertops from a local lumberyard/hardware store.  After a 10 week😳 wait I found out that the miter cut joining the bar to the cabinet section was misfit.  Since the bar was 20” and the regular top was 25-1/2” a standard 45 deg wouldn’t work.  They knew it was a different angle cut.  When I dry fitted one piece was the correct but someone cutting the counter cut 45 deg.  Needless to say there was a 3” gap on the outside corner.  They picked it up and another 4 weeks it came correct.  But low and behold they shorted a 30” stand alone cabinet countertop .  Another 2 weeks.  With everything needing done here I might just wait until the weather shuts down outside before working in the apartment.

The bathroom is finished but until I get the countertops mounted I can’t finish the kitchen sink.  I still have to connect the main sewer line to the main house.  Better wait until a day alone without anyone needing the main house plumbing.  The hot water heater is installed and electric attached. 

Still using the temporary stairs.  Need to make another tread and riser for a complete cherry stairs.  The skirt boards will have to be planned, cut and joined.

Hey I’m closer than I was when I started.😎
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