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The Alter Ego Garage

ErVikingo

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Joined
Feb 23, 2005
Messages
131
Location
Florida
Hi name is Juan and I'm a car fanatic (everyone: hello Juan). I'm a vintage racer and enjoy working on my cars and motorcycles.

Inspired on LLWillisFan’s “Concrete Underground” construction project, and as suggested by other posters (Sigma X and HPW) following I describe my soon to be started future home. Similar to his project, my house will have a concrete shell and the design is modern/contemporary.

The project started back in the mid 2,000’s when I decided that I needed extra garage space to house the cars and the bikes and have some space to work on them; currently I store some cars and my trailer off-site. We had also decided that since we had little ones on the way we would prefer to have a 1 storey home of larger proportions. Our current home is 2,500 sqft/ac and the new one will be 6,500sqft/ac. More importantly the garage space grows from 700 sqft to 2,400 approx!

Being that I live in South Florida, whilst our lot is unusually large by local standards (1.1 acres) it is very small compared to LLWillysFan’s. Due to the tropical nature of the local weather (and my experience with natural disasters) the first requirement was that our new home and garages were to be built with a concrete envelope (including a poured concrete roof). All impact windows and doors, a generator, provisions for PV panels and solar water heating (both for the pool and household usage).

The garages are split into a 3-bay garage for the daily drivers and a separate 3 deep bay unit that could fit my enclosed ATC trailer; the workshop. The workshop will have 2 regular roll up type garage doors and a barn door type on the bay dedicated to the workshop section. There will be provisions for mezzanine type storage over the bay destine for the trailer (which I might end up selling anyway but that is another subject), a large enclosed storage closet and a full bath. The slab is spec’d for a four post lift on the center bay.

The garages will be insulated (including the doors), will use wall mounted openers and will provide for automated exhaust provisions via humidistat controlled exhaust fans. The workshop will have a “minisplit” a/c and will be connected to the whole house audio/video/data distribution system.
Originally we were going to have an additional bay which was to have a storefront type window into the kitchen/family room so we could see one of the cars (my wife’s idea!). Due to HOA setback considerations we had to eliminate that bay :( .

The process has been quite long since trying to build something that does not follow the typical style architecture in use around here (what I refer to as “Mizner’s Mediterranean Revival”) is not easy. We had to go over a long process with the HOA for approval of our design. I’m blessed to have good neighbors who can see our vision and our plans have been approved.

Originally my plan was to build the envelope using ICF (insulated concrete forms) which is a leave in place type form for the structure. We were to have 4.5 inches of foam on the exterior of the perimeter walls followed by 6 to 8 inches of poured concrete, then another 2.25 inches of foam and the drywall. On the roof, we were going to use a similar form but one that is one sided with 16 inches of foam on the underside of the roof.

Looking at the quotes put together by the different specialist shell contractors we contacted, I realized that the cost of going that route carries a substantial premium over building the walls out of CMU with tie beams and using a metal joist poured roof. I had all the structural and MEP engineering done considering ICF and it is being revised now.

Being that we will have poured beams and columns and some cells on the CMU’s will be “grouted” we will have a strong shell but the insulation will not be as good as with ICF. BTW, we plan on using closed cell icynene spray foam on the walls and roof.

Quotes are in and hopefully the engineers are done by the end of January so we can go into permitting and start construction!

Following is a rendering of the house. Please note that, the “checkmark” shaped roof will be flat due to building considerations. There will be a perforated aluminum brise soleil around all sides of the roof and the clerestory windows will remain.
 

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ErVikingo

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Feb 23, 2005
Messages
131
Location
Florida
Moving into the business side of things, the floor plan of the daily garage and the working garage is shown below (please note that there is a pantry, gym and some closets between the two garage spaces).

So what do you think? (be gentle please...)
 

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el Pedro

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Apr 17, 2012
Messages
325
Location
South East FL
Wow! Love the rendering, looks fantastic. Would love more info on the cars and bikes that will be going in too. Keep us updated on the project.
 

floridaguy

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Joined
Oct 16, 2008
Messages
142
Location
In the garage
I like the rendering, very nice. I will be watching for further updates and you sharing pics and info on your toy collection.
 

ConCretin

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Joined
Jan 20, 2011
Messages
3,378
Location
Central Maine
Well, you knew I was gonna love this build. Sorry to hear you've had to move away from a concrete structure but as much as I hate to admit it, you probably won't know the difference when you're done.

I can sympathize with the challenge of getting a modern home designed, permitted, budgeted and built. It's at least twice as difficult as more traditional construction but for some of us, it's well worth the effort.

please keep us posted on your progress and feel free to PM me if I can be of any assistance.
 
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ErVikingo

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Joined
Feb 23, 2005
Messages
131
Location
Florida
I'll post pics of the toys later tonight. I attach what i have on this device.

I can post more info, how large can attachments be?

LLWillysFan, to build with ICF they specd 19.3 miles of rebar and a lot of yards of concrete. The slab needed additional footings all over.

We are going with a Hambro joist system on the roof which is much lighter and simpler. By the time we add the icynene, we should have a similar R value!

Thanks for the offer to help, i might take you up on it. Likewise, if i can be of help, just send me a note

Ok here's a pics of my 1969 911 S streetcar, i have another 69 911 S racecar. There is an old pic which has my 78 911 also. More to follow....
 

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ErVikingo

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Joined
Feb 23, 2005
Messages
131
Location
Florida
Thanks Jack. I can't spend all my internet time over at "the bird". Wayne probably appreciates a bit of latitude with his bandwith ;)
 

bdamico

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Joined
May 8, 2012
Messages
2,303
West Broward county

I'm down in Miami. Love to see the cars sometime. One thing I would implore you to pay attention to--the flat roofs. I'm a pretty new modern construction and they have been a headache. I find the elastomeric is insufficient as it is not rated for continuous water and if you have even the slightest amount of pooling, it is virtually continuous in the rainy season.
 

55cadillacking

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Joined
Apr 26, 2012
Messages
1,959
Location
Calgary
That's quite the garage. I've been wondering what the benefit/preference is for having the garage divided into two main areas. It seems to be quite a trend up here. There's a larger home down the road that has two double garages. In my mind, I would want to have everything in one huge main space. I'm curious as to your insights. I'm not being critical, just curious.

Oh, I guess this answers my question:
the floor plan of the daily garage and the working garage is shown below
 
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ErVikingo

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Joined
Feb 23, 2005
Messages
131
Location
Florida
Rick, that is it. It makes it more private and i dont have to pick up daily for safety of the in the middle of a project. This way i can just lock it.

The other consideration, is to limit the number of consecutive garage doors, you'll notice that this one is towards the back of the house and there will be landscaping between the 2 garages to mask the existence of the second set of doors.

There will be a higher hedge also to the left of it to block it from view of my neighbor ( even when they are aligned to their side yard).
 
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ErVikingo

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Joined
Feb 23, 2005
Messages
131
Location
Florida
Here's some pics of the current race car. One in vintage trim and 2 with the aero package for other venues.

Photos courtesy of Blake Blakely Motorsports Photography and ColourTech South Motorsports Photography (thanks guys!)
 

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ErVikingo

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Joined
Feb 23, 2005
Messages
131
Location
Florida
Some of the past flames...
 

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Hottrod

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Joined
Jul 6, 2011
Messages
150
Location
West Indies
Hi Juan, congratulations on starting your project, I'm at the tail end of my own build and also spent a great deal of time in planning all of the details (or more accurately, "obsessing") on my own project, which in many ways is similar to yours - a modern, single-level home in a tropical storm exposed area, constructed of reinforced concrete with a poured roof.

Your design is awesome, really, and I have no doubt all of the hard work you've done and are about to do is going to be absolutely, positively, certainly worth it.

The GJ forum has proved to be an invaluable resource to me in terms of new ideas and in bouncing options off of its members for an objective opinion - every person I've come across on the forum is genuinely willing to assist with advice, and of course looking at how other people have figured out their design and construction challenges is hugely helpful.

I cannot begin to describe the amount of planning I have done for my own build, and lots of the details that you mention for your project and that I can see from your rendering are ones that I've researched over and over again - please feel free to PM me and I'd be happy to share what I've found with you, in case it can be of use in making your build even more enjoyable! I have found suppliers of the most awesome stuff, and because of the heavy taxes and duties we face here I've had to make damned sure I'm getting the best pricing - my black book (hard drive!) of notes is open to you!

Congrats again, and best of luck on what promises to be a build we're all going to enjoy looking in on - you, Sir, are subscribed!
 

EMC2

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Joined
Nov 25, 2012
Messages
229
Location
Georgia
Hi Juan,
A big hello from one Porsche fan to another. You have a great car collection there.
The plans look great and I look forward to seeing the progress.
 
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ErVikingo

Well-known member
Joined
Feb 23, 2005
Messages
131
Location
Florida
Hi Juan, congratulations on starting your project, I'm at the tail end of my own build and also spent a great deal of time in planning all of the details (or more accurately, "obsessing") on my own project, which in many ways is similar to yours - a modern, single-level home in a tropical storm exposed area, constructed of reinforced concrete with a poured roof.

Your design is awesome, really, and I have no doubt all of the hard work you've done and are about to do is going to be absolutely, positively, certainly worth it.

The GJ forum has proved to be an invaluable resource to me in terms of new ideas and in bouncing options off of its members for an objective opinion - every person I've come across on the forum is genuinely willing to assist with advice, and of course looking at how other people have figured out their design and construction challenges is hugely helpful.

I cannot begin to describe the amount of planning I have done for my own build, and lots of the details that you mention for your project and that I can see from your rendering are ones that I've researched over and over again - please feel free to PM me and I'd be happy to share what I've found with you, in case it can be of use in making your build even more enjoyable! I have found suppliers of the most awesome stuff, and because of the heavy taxes and duties we face here I've had to make damned sure I'm getting the best pricing - my black book (hard drive!) of notes is open to you!

Congrats again, and best of luck on what promises to be a build we're all going to enjoy looking in on - you, Sir, are subscribed!

Hey HotRod,

First off you must have a Carib or 12 when you are done with the project. I spent quite a bit of time in TT in the late 80's and early 90's. Lovely place with lovely people. Had my nice afternoons watching some cricket matches and ending up having dinner at Rafters (I wonder if it still exists).

I'm originally from PR so the hurricane preparedness is paramount based on my personal experiences. I would like to hear any suggestions you might have for me and info on suppliers. I just signed a contract with the roofing company (Hambro) and they are preparing the shop drawings for the joists, etc.

I'm also in contact with CEMEX (cement) who have a new cement formulation which is reportedly stronger (trade name: Fortium) which apparently allows for a reduced usage of re-bar (but we are still going to use the regular quantity).

I look forward to completing my project so I can "have a lime" on the new home. I'm sure you do to...

Kind regards!
 
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ErVikingo

Well-known member
Joined
Feb 23, 2005
Messages
131
Location
Florida
Hi Juan,
A big hello from one Porsche fan to another. You have a great car collection there.
The plans look great and I look forward to seeing the progress.

Thanks EMC, nice list of cars in your signature line and a fantastic looking garage.

I looked at your photos I was ashamed of my current cabinet of towels and different car care products. You made me go back over it and pick it up a bit.

Kind of hard currently with a 3 car garage housing 3 cars, bicycles, kart, etc...

I'll post progress details. Perhaps we'll see you at Road Atlanta for The Mitty or the Atlanta Historics
 
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ErVikingo

Well-known member
Joined
Feb 23, 2005
Messages
131
Location
Florida
BTW, I have the same aluminum PORSCHE letters in a box here waiting for the house to be built!
 

Hottrod

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Joined
Jul 6, 2011
Messages
150
Location
West Indies
Hey HotRod,

First off you must have a Carib or 12 when you are done with the project. I spent quite a bit of time in TT in the late 80's and early 90's. Lovely place with lovely people. Had my nice afternoons watching some cricket matches and ending up having dinner at Rafters (I wonder if it still exists).

I'm originally from PR so the hurricane preparedness is paramount based on my personal experiences. I would like to hear any suggestions you might have for me and info on suppliers. I just signed a contract with the roofing company (Hambro) and they are preparing the shop drawings for the joists, etc.

I'm also in contact with CEMEX (cement) who have a new cement formulation which is reportedly stronger (trade name: Fortium) which apparently allows for a reduced usage of re-bar (but we are still going to use the regular quantity).

I look forward to completing my project so I can "have a lime" on the new home. I'm sure you do to...

Kind regards!

Glad you had a fun time here, liming is the thing we do best! Rafters is long gone, unfortunately, but the restaurant that has replaced it is really something, you definitely wouldn't recognize the interior - for one, you can actually see properly in there now!

Concrete wise, in some areas where the spans weren't crazy I went with pre-tensioned concrete beams with infil blocks with a poured cap layer, and with a cast-in place slab for the larger spans - if you have a look through my thread you'll get an idea of the steel that went into it. Am not familiar with Fortium, but Cemex is a pretty serious Company, so I'm sure it's a good product, and stronger is always better - my approach was to listen to my Structural Engineer and do whatever he says!

I'm sure you know this, but it is a good idea to keep the slab wet after the concrete is poured. As an aside, every time we got a truck of concrete we took samples which then went out for materials testing by an independent lab. Overkill maybe, but my Contractor is just that kinda guy, which works for me! The Engineer oversaw the steel work and the pours.

Some bullet points on the roof in general-
-Skylights were a great decision in terms of natural light, and the Velux ones I got are available with a Miami-Dade rating. I cannot recommend these enough for the amount of light they bring in, and the double-glazing keeps the heat out. You do need to factor these in to the structual design of the roof however, just something to keep in mind.

-The positive effects of the spray-on foam in terms of temperature are startling - both in terms of not letting heat in and subsequently avoiding the slab having any heat to give out long after sundown. The underside of my roof slab is cool at all times, the foam just works and it was a great decision. The product comes with a 15 year warranty + 10 years more if you let 'em inspect it along the way, and price-wise it was actually cheaper than a traditional asphalt/bitumenous membrane over isocrete falls.

The downside of the foam is that the roof surface isn't perfectly flat, but the gravel over the foam hides the bumps and keeps looking more consistent over time than other (flat-roof) claddings. My foam provided waterproofing, created the falls for the rain and of course insulation in one, but you can use the foam just as an insulator on the underside of the slab if you'd like as well. Not sure what the Fla prices for this are, but I do think it is worth a look.

Lastly, in building in concrete, you can never leave too many pass-throughs and/or conduits for the cable and other runs. And make 'em as big as your engineer will allow! :thumbup:
 
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faxij

Member
Joined
Jun 28, 2012
Messages
23
Location
Germany
If that rendering and the floor-plans are anything to go by, this will be very exciting. Especially, since you've been referencing the concrete underground, which is a build I've been drooling all over since I found it a few months back or so.

I would love to see more renders or plans, if you have some to share. Also, not to add any pressure, just out of curiosity - do you have some sort of rough schedule for the whole building process?

Nice cars as well. I am a fan of the earlier Porsche's, I actually don't like the post-2000 models at all, the 964 being my personal #1. I am happy to see some of these still get used for what they've been built for! (hint: not standing around in a garage for all eternity, gathering dust).

Last but not least: if it is not a major inconvenience, it would be really sweet if you could implement the pictures directly into the thread like LL did in his thread. So you can see the pictures immediately, and don't have to click the thumbnails each time. Would be the icing on what looks to be a very delicious cake ;)
 
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ErVikingo

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Joined
Feb 23, 2005
Messages
131
Location
Florida
Thanks! The cars really get used for what they were meant (well, except for my blue 69S which is enjoyed and revved up regularly but not on the track).

For me, 1965 to 1997 were the best years now followed by the 991 which I think is quite beautiful. Can't wait to see what the upcoming Turbo version will look like (and perform...!)

How do I insert pics that are not thumbnails?
 

BeachBoy

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Joined
Dec 28, 2010
Messages
540
yes more renderings please!

I was looking at the floorplan and I think I've never seen a house with that many bathrooms. There's like one for every room (like two just for the workshop and 6 in the rest)! Maybe it's something in the US but up here we have one in the master bedroom and then maybe one per floor if lucky.

I think ICF is not that necessary in your climate. Up north you can't use CMU or similar as the thermal efficiency is not good for -20F winters.
 
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