22x40 shop addition to Shipping container

[jamo1911]

OK, here's a small shop I've been thinking about building and have decided to start next month. I figured I'd show some drawings I have done and ask for suggestions.
First a little background. This glorified shed is for maintenance on my equipment and trucks. I have a relatively short lease (2 year) on the lot that I am using and there will be no building permits. That being said I'm building it for what I can rent a similar shop around here for 4-6 months. So If I have to take it down I can deal. Power will be supplied via extension cord to my neighbors shed 60 feet away and my generator for more demanding applications.
I am a mason by trade so the floor and service pit will be a piece of cake. The pit will be 30' long by 3' wide with a 3" lip recessed down both sides so that I can cover the pit with 6x6 posts and have a flat floor when I do not need the pit. The 6x6's will be attached in 10' sections. I have no shortage of equipment to pick them up. I an 5'7" tall and my pit will be 5'6" deep. Pit ventilation will be via 2 6" ducts 6" above finished floor on either side of the pit. Recessed lighting will line the walls of the pit. Stairs will be made out of wood and removable. Air lines, electric and empty conduit will be supplied.
Construction will be handled by an area contractor that is a friend of mine.

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[jamo1911]

Got a break in the weather and poured the floor the other day. Decided to skip the service pit.

 

[Strouty]

looking forward to seeing more of the build. I think the pit would have been trouble long term anyways.

 

[805gregg]

I don't see any pit?

 

[jamo1911]

The pit idea only hung around for a few days. Although I would have liked it, the landlord said no way. So the decision was made for me. But when I thought more about an it I figured it would have been good and bad. Great for working on trucks, but a giant hole in the ground of a small shop every other day. The pic above was before I power troweled it. I just saw cut the crack control joints yesterday, I will take pics of how it looks now.

 

[mws444]

Probably a good idea to skip the "pit". Fumes tend to sink into them, fire is a bad thing when you are trapped under a car in a closed space. Not to mention carbon dioxide will also concentrate in them.

Looks like a fun build, keep posting up!

 

[jamo1911]

Here a couple of pictures with the control joints cut. We have since re-graded right in front of the slab so that we can drive right in.

 

[cajunfirehawk]

Wondering why they cut the joints rather that using normal expansion joint methods, like lumber or other, costs?

 

[jamo1911]

I just like the look better. Probably costs me more if you take into account your time. I didn't want to use an edger because I didn't want to have the two curved edges come together. When the project is done I may fill the saw cut with self leveling sealant like Silkaflex. That way if I drop any small parts they can't hide in the crack.

 

[SoL from Sweden]

cool build

 

[K2Orion]

Watching this one.

Planning another container and trusses between?
That's what I'm envisioning.