Foundation Plugin

Re: Foundation Plugin

Postby medeek » Wed Apr 26, 2017 8:41 pm

I just realized that there may be a few items I missed in the last update with respect to the polygon stemwall tool and metric templates. I will do some more bug testing tonight to verify that all of the issues are addressed. I usually do all of my own work in standard US imperial units so sometimes in my rush to get a release out I forget to check all of the options and possible permutations using a metric template. I apologize for any inconvenience this may have caused. If you do notice an error please feel free to post here or notify me directly. Please give as much specifics as possible, that always helps.
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Re: Foundation Plugin

Postby medeek » Wed Apr 26, 2017 9:55 pm

The trim tool in the Truss Plugin comes in quite handy when dealing with more complex foundation geometry:



For this foundation I used the stemwall (rectangle and polygon) function and the slab (polygon) function. I had to trim the garage stemwall and also manually create the smaller interior post/beam assemblies. I also adjusted the position of some of anchor bolts once I cut the doors into the garage stemwall.

View model here:

https://3dwarehouse.sketchup.com/model/ ... undation-7

Throwing a roof onto this foundation is fairly straightforward:



View model here:

https://3dwarehouse.sketchup.com/model/ ... esidence-7
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Re: Foundation Plugin

Postby medeek » Wed May 03, 2017 4:05 pm

Recently I've received a number of requests for concrete columns to be added to the foundation plugin:



I'm still trying to figure out how to best add a concrete column module, I think it could gain some serious traction. This would cater more to the industrial rather than the residential side.

I'll use ASDIP Concrete Software as a guide in establishing the various options to include:

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Re: Foundation Plugin

Postby juju » Thu May 04, 2017 10:17 am

This is a very interesting development. However, here is something to think about...

You need to consider if you want to expose yourself (or the persons using the extension) to possible legal action. Soil and load conditions differ from place to place and instance to instance. This would require the input a structural engineer to certify the correct steel choice and configuration. This would then mean that the steel reinforcing in the extension is really reduced to "for illustrative purposes only".

Which begs the question, just how much effort is thus justified with steel reinforcing options? Do you have a section for regular (non structural engineer) users with a "for illustrative purposes" type of output and a separate section (with all the "bells and whistles") you can only access with the completion / agreement of an indemnity?
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Re: Foundation Plugin

Postby facer » Thu May 04, 2017 1:24 pm

It looks like the "engineer" in medeek has taken over!

I agree with "juju's" thread of thinking.

The depth of detail suggested may be useful in medeek's engineering practice but have less value
for I guess the majority of users and prospective users.

My suggestion would be these proposed changes are at the edge of "the bell curve".
It may be more prudent to stay within the "bulk" of users and prospective users requirements.

Food for thought! :)
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Re: Foundation Plugin

Postby medeek » Thu May 04, 2017 3:12 pm

A couple of things:

1.) Based on a conversation in the other forum I will be adding a global setting that allows one to specify the number of segments in the circular arcs that make up the rebar/mesh. This will allow a more lightweight model. The anchor bolts are pre-modeled and then dropped into the model as components. I will need to create some light weight versions of them for this purpose.

2.) So far this foundation plugin has been mostly geared toward the residential designer/architect. Concrete columns, beams, and more complicated footings and retaining walls are typically more the area of the commercial and industrial market.

It might make more sense to create a separate plugin that deals specifically with these reinforced concrete elements (Medeek RC). My engineering side wants to also integrate the calcs inside the plugin as well, so yes that element of me comes out sooner or later.
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Re: Foundation Plugin

Postby pbacot » Thu May 04, 2017 5:27 pm

Great work. I'd say we use a lot of conc. piers, columns and retaining walls in residential work, probably more than some, due to the soils and topography. Also because the buildings might be larger and less conventional, but still wood framed.
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Re: Foundation Plugin

Postby medeek » Sat May 06, 2017 6:57 pm

Version 1.1.2 - 05.06.2017
- Added "Circle Segments" option within the global settings, rebar and mesh polygon counts can now be controlled.



In this example I set the segment number to "5".

The global setting circle segment number will default to 24.
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Re: Foundation Plugin

Postby medeek » Sun May 07, 2017 3:27 pm

The foundation of the that goofy donut house:

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Re: Foundation Plugin

Postby medeek » Sun May 07, 2017 7:51 pm

Some common configurations of concrete columns:

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Re: Foundation Plugin

Postby medeek » Mon May 08, 2017 2:49 am

A slightly darker version with shading pops out a little more:

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Re: Foundation Plugin

Postby medeek » Wed May 31, 2017 4:14 pm

I've had a request for adding the option of insulation around a slab on grade, in short a frost protected shallow foundation (FPSF).

This should not be too hard to add in. There are a number of resources online I will study to come up with the most standard configuration as possible.

Are there any particular things anyone would like to see with regards to FPSF insulation.

The typical installation per the 2015 IRC:

FPSF.jpg


The NAHB has an upated publication at this link:

http://liteform.com/wp-content/uploads/ ... evised.pdf

XPS vs. EPS? Not that this will affect the plugin but I am curious which is preferred by those who commonly install these types of systems.
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Re: Foundation Plugin

Postby db11 » Wed May 31, 2017 6:10 pm

In our Passivhaus builds, this is the preferred foundation type for several reasons.

I think you would be surprised at the EPS insulation thickness under-slab... up to 14". Of course, this varies considerably with different climate zones. (We are in Quebec with winters where -40° is not unexpected)

There are modular slab insulation systems for FPSF. Iso-Slab is a Quebec-based one: http://www.iso-slab.com. Their web-site has technical info on these systems that may be of interest to you.
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Re: Foundation Plugin

Postby medeek » Thu Jun 01, 2017 5:54 am

An FPSF with 2" foam insulation along the wall and vertically. 2.5" foam insulation at the corners with the following horizontal dimensions:

A = 12"
B = 24"
C = 40"



The rectangle foundation is easy, the polygon shaped foundation will be more challenging.

View model here:

https://3dwarehouse.sketchup.com/model/ ... 80741/FPSF

One thing to note is that if dimensions A or B exceed 24" then some form of protection for the horizontal insulation is required (ie. conc. slab, pavement, PT plywood).
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Re: Foundation Plugin

Postby medeek » Fri Jun 02, 2017 3:54 am

An irregular shaped FPSF, note the 135 deg. corners. Once this angle becomes greater than 135 degrees I would probably just treat it the same as a straight wall.



View model here:

https://3dwarehouse.sketchup.com/model/ ... fd73/FPSF2
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Re: Foundation Plugin

Postby medeek » Sat Jun 03, 2017 9:27 am

Version 1.1.3 - 06.03.2017
- Added "FPSF" option to rectangular slab-on-grade foundations.
- Added "FPSF" option to rectangular stemwall foundations.
- Added an insulation layer in the global settings under the "Layers" tab.

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Re: Foundation Plugin

Postby medeek » Sat Jun 03, 2017 7:56 pm

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Re: Foundation Plugin

Postby medeek » Sun Jun 04, 2017 5:08 am

Working on the square/rectangle spread footing tool:

POST_EXAMPLE.jpg


I will start with wood posts as an option with the following sub-options for the wood post:

Post Size: 4x4, 4x6, 6x6, 6x8, 8x8
Post Height (in.)
Post Base: None, ABA, ABU, ABW, CBSQ
Post Cap: None, CCQ, ECCQ
Post Rotation: 0, 90, 180, 270

I also plan on having the option for steel posts with the following sub-options:

Post Size: HSS4x4x1/2, HSS4x4x3/8, HSS 4x4x1/4, HSS3x3x3/8 etc... (round and square tube)
Post Height (in.)
Base Plate Size (in.) - square shape L x L
Base Plate Thickness (in.)
Base Plate Hole Dia. (in.): 1/4, 3/8, 1/2, 5/8 (4 bolts per baseplate)
Vert. Offset (in.) - for non-shrink grout
Post Cap: Not sure what to do with this yet.
Post Rotation: 0, 90, 180, 270





I've been contemplating using the Simpson Strong-Tie post caps and bases as provide in the warehouse but I'm worried that the polygon count is too high. I may have to generate my own dumbed down versions.



My 13 year old daughter asked, "What is this for? What good is it?". I replied, "It is good for all sorts of things, just like a Thneed." Then I proceeded to discuss decks, porches, carports etc...
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Re: Foundation Plugin

Postby medeek » Mon Jun 05, 2017 7:57 am

Added "FPSF" option to polygon slab-on-grade foundations:

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Re: Foundation Plugin

Postby juju » Mon Jun 05, 2017 8:05 am

Can you do that with the option of putting it (as a vertical component only) on the inside of the foundation wall? It may be of use in climates that isn't as cold and you have the option of putting it either inside or outside of the foundation plinth wall.
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Re: Foundation Plugin

Postby medeek » Mon Jun 05, 2017 3:23 pm

juju wrote:Can you do that with the option of putting it (as a vertical component only) on the inside of the foundation wall? It may be of use in climates that isn't as cold and you have the option of putting it either inside or outside of the foundation plinth wall.


I can add another option to insulate the vertical interior face of the stemwall/foundation wall.
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Re: Foundation Plugin

Postby medeek » Mon Jun 05, 2017 7:31 pm

Working through the issues of the polygon FPSF option has helped me understand better how to deal with adjacent walls in particular non-orthogonal walls and how best to calculate the geometry at their intersections.

This has me primed for further development of the wall plugin, so even though this feature may not have much use for most of the client base it still have served a major purpose in educating me.

With the tool function I am able to create lines to show preview geometry however I am wondering if there is a way to show a dimension (beyond showing the numerical value at the bottom of the SketchUp window).
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Re: Foundation Plugin

Postby medeek » Mon Jun 05, 2017 10:05 pm

An octagon slab on grade (FPSF). Note that the angle of the corners is 225 degrees, any less and the corner treatment would go away.



Clarification on the angles:

Any corner with an inside angle greater than 135 degrees will not receive corner treatment.
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Re: Foundation Plugin

Postby medeek » Tue Jun 06, 2017 12:11 am

I've had some discussion with other SketchUp users about developing the plugin for commercial use. Should I require that the user have PRO installed? A number of registered users of the plugin do not use it for commercial use, I would rather keep it open to all users but it would be easier to develop within PRO with its Boolean functions.
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Re: Foundation Plugin

Postby medeek » Tue Jun 06, 2017 6:09 am

Added "FPSF" option to polygon stemwall foundations.



Now I've thoroughly beaten the FPSF option to death, the only thing I might add in later is a global setting to change the insulation color to pink, blue or white.
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Re: Foundation Plugin

Postby juju » Tue Jun 06, 2017 7:35 am

medeek wrote:I've had some discussion with other SketchUp users about developing the plugin for commercial use. Should I require that the user have PRO installed? A number of registered users of the plugin do not use it for commercial use, I would rather keep it open to all users but it would be easier to develop within PRO with its Boolean functions.

Unless the person using it is a registered professional (engineer, etc.) and the application is within the ambit of their qualifications / registrations and they are using it for a personally owned property I would argue that the use could be for commercial purposes, in my mind anyway.

Else the works created would need to be "signed off" by a professional, in which case the lines get blurred and the commercial application / gain with the use of the extension arises...
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Re: Foundation Plugin

Postby db11 » Tue Jun 06, 2017 3:03 pm

medeek wrote:Now I've thoroughly beaten the FPSF option to death, the only thing I might add in later is a global setting to change the insulation color to pink, blue or white.


Is there an option for underslab insulation? What is the range of insulation thickness available?
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Re: Foundation Plugin

Postby medeek » Tue Jun 06, 2017 3:10 pm

I guess I'm not done with the FPSF option just yet. Insulation thickness is open ended you can put in as thick as you like, some areas apparently install insulation upwards of 12".

How do you want the underslab insulation configured?
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Re: Foundation Plugin

Postby db11 » Tue Jun 06, 2017 4:27 pm

In our climate, we use full underslab insulation (anywhere from 6-14") to thermally isolate the slab. In PassivHaus builds we float the house on a 12 - 14" EPS tray that totally eliminates thermal bridging through the envelope and conduction loss to the ground.

Inside perimeter insulation — 2 to 4' of EPS/XPS extending inward from the footing leaving the center area uninsulated — may be sufficient in milder climate zones, and was/(still is?) common for use under basement slabs. But here, the conduction heat loss through the slab renders any material savings moot after the first winter or two of heating bills.

I'll PM you a foundation drawing set for a recent build to give you an idea of our approach — not as an input for feature requests, as I realize that our approach would be considered way overboard by people unfamiliar with PH standards — but just for your interest.

And if you haven't had a chance, I recommend highly that you check out the Iso-Slab website linked in an earlier post. It derives from European slab insulation systems that have been available for years there, originally developed to meet the needs of a burgeoning PH market. It will give you an idea of where building is going, even if the NA construction industry is notoriously slow and resistant to adopting new methods / better materials / higher performance standards.
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Re: Foundation Plugin

Postby medeek » Tue Jun 06, 2017 7:33 pm

The Passivhaus system is really something else. With your form profile what are the measurements that are variable? Is the slab always 8" deep on your typical builds?
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