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40 x 60 attached workshop/office build, advice please

hellspcangel911

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Jan 3, 2010
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237
Hi Guys,
We started working on clearing and blasting our property a few years ago. We were on track to put up an 40x80 Olympia steel building this Fall. All of that changed when a zoning change occurred this summer that limited our square footage for an accessory structure to 800ft.

We hired a landscape architect to draft plans to propose to the city as part of a variance application. In the process the firm proposed attaching the structure by means of a breezeway to our existing home. After a few variations and taking into consideration the points below we had a location nailed down to put a 40x60’ barn.

-Location of septic tank; the area has a lot of ledge so relocating it would best be avoided
-15’ setback requirements from the leechfield
-40’ setback requirements from the front yard

Additionally slope is not on our side. The area where the barn would go undergoes a 12’ elevation change. The leech field and bottom corner of proposed structure is over 5’ lower than the basement grade of house. Most of this is fill that was hauled in when the house was built. The plan is to put the barn as low as possible ( about 4’ below the grade of the basement floor) so you don’t see as much of it from the front yard. This would also help mate the 2nd floor of the barn with the main floor of the house for ease of access from the farmers porch.

The red line shows where the foundation would incorporate a concrete retaining wall. Which further complicates construction but would be nice to have a concrete interior wall in the barn for mounting tools and benches to.

Aside from the driveway slope, are only 30’ of flat land before the 14’ drop off in front of the top of the barn, even less at the bottom. This should be enough space to maneuver even a gooseneck horse trailer or toy hauler, right? Wide doors will be key? The proposed circular driveway most likely wont work out because of the grade difference and narrow side.

Now the part we really need your advice on; the height and configuration. The ground level will be my workshop, a place to store the boat, backhoe, machinery…toys….etc. The boat trailer is about 24’ long, backhoe is under 12’ tall. My wife will have a small office above the work shop looking out at the animals , about 20’x20’. It will be accessed either from inside the barn or from the farmers porch on the house.
How high would you build this allowing part of the workshop to go floor to roof while the part closer to the house would have an upstairs office.

With the original 40x80 Olympia plan and a separate office for the wife, configuration and planning weren’t as important.

Thank you for reading, sorry for the long post, its taken a lot of work to get to this part and its still hard to fully imagine. Any comments, photos, advice and suggestions would be greatly appreciated.

Attached is a photo of the backyard showing the slope and proposed area for the barn
 

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Diesel Dan

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Minimum 17' to accommodate two 8' floors.
Really need more details.
What kind of floor truss system will you use?
How much head room for the shop under the office?

You're just stacking dimensions.
Office 8', flooring 1', shop 12' = 21'
Office 7', flooring .75', shop 10' = 17' 8"
etc, etc
 
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hellspcangel911

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Jan 3, 2010
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so if we assume a 8' office that leaves the shop. Is 12' high enough to comfortable work on a F350? worth going to 14'?
If theres 7' under the office thats fine, I just dont want to compromise the usability of the shop more than I have to.
Havent gotten that far with the floor truss system, I would assume TJI 9.25", so 1' total is a fair assumption.
 

ramairthree

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Nov 30, 2010
Messages
101
Your size seems great, no issues there.

As for height,
I did 14 feet over the garage portion.
This gave me attic storage over that, and a nice room over the shop portion that i did an 8 foot ceiling in.

A couple of years later, I think I would have been better off to do 11 feet over the garage portion instead of 14, and 11 over the shop portion instead of 8.

Then finished the whole upstairs.
 
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hellspcangel911

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Ranaurthree, do you you have any pics of your place?

I'm leaning towards 16' in the garage with just a storage area overhead for car parts and **** that accumulates. then doing the the 8' office above the 7' shop area on the other side.
I'd love to go with a clear span as much as possible especially coming from the Olympia steel mindset. I was hoping to still use a 'kit' and just modify it but with one side having a tall concrete retaining wall as part of the foundation i dont think its possible.
 

Diesel Dan

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so if we assume a 8' office that leaves the shop. Is 12' high enough to comfortable work on a F350? worth going to 14'?
If theres 7' under the office thats fine, I just dont want to compromise the usability of the shop more than I have to.
Havent gotten that far with the floor truss system, I would assume TJI 9.25", so 1' total is a fair assumption.

Many people work in residential garages with 8' ceilings. Common height of pole barn kits is 10'.

I could live with 8' under the loft. Area would be work benches, tool boxes, storage etc. With the 17.5' shop height I currently have I may put a mezzanine over the work shop portion.
 

Dragfluid

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I would rather limit the office ceiling to 7'. Unless any of you are extremely tall, that's more than enough room. I'm 6-2 and 7' works out fine for my office. :)
 
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Radix2

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7 foot is too low for a working space, 8 foot minimum. 9 foot would be great.

At 7 foot it is hard to make lighting work, and it is hard to move objects without hitting the roof.

For a clear span, you are at the 11 7/8 series for any decent span, so you better plan more than a foot for structure.
 
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hellspcangel911

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hmm. wife is 5' tall and I'm 6'.....Might be more reason to go 8' in the workshop and 7 feet upstairs for the office- maybe do a cathedral ceiling there to give it more space.
 

Diesel Dan

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hmm. wife is 5' tall and I'm 6'.....Might be more reason to go 8' in the workshop and 7 feet upstairs for the office- maybe do a cathedral ceiling there to give it more space.

Run it by the wife but it's not normal living space so you should be able to live with it. Whatever it takes for more shop space, right?
 
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hellspcangel911

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Exactly... it’s a balance game in the equation between garage space and a happy wife to make an easy life.

Another issue with the build is going to be the wife doors to help get stuff in and out given the relatively tight turn. I could see this being difficult with the span.


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Radix2

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IMO, unless you have a hard legal issue with going higher, just bump the building height to get 8 foot ceilings.

If you can go with a cathedral ceiling to get 8 foot over most of the room, that is fine too.

But to build new and make that kind of compromise for probably hard to see outside cosmetics seems like a bad deal.
 
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