[pairodice]

Wow, so now I'm thinking 60x20 with a 15x13 door... 5" reinforced concrete ... Do I need more concrete where the wheels will sit?

[newell_0]

It wouldn't hurt to make it 6", but 5" with some reinforcement would be plenty. Just make sure to have expansion joints, or saw it off the next day after pouring about 8 to 10 feet apart. Also, make sure you have a base of 8 to 10 inches of sand well compacted.

Good luck!

[Super c]

Just an observation. It looks like you have had several motorhomes before this one. I built my shop for the motorhome I had then, I wish I had built it for what I could potentially have in the future. I mentioned that to say that 20' will be a little cramped with 2 slides and quite cramped with 3 to 4.
My shop is 40x50 with a 15x50 roof extension off of one side. My next project will be to add 10 ft. of length.

[newell_0]

Just another observation: if you want to a workshop to work on your coach then make a 3.5'w x 4.5'd x 45'l grease pit in the floor of your garage so you can get to work on your coach. I had 2' x 4' x 10' on one side of my two-car garage that I built in 1980 and really liked it. Just a thought!

[HoosierDaddy]

I like the pit idea as well but be WARNED to not have any engines running any where near the pit. CO seeks the lowest level in any area. A CO detector in the pit would be a good idea.

[newell_0]

One can always use to pipe out the CO by attaching a hose onto the coach's exhaust.

[encantotom]

I went down the path of having a 50' long pit with steps and grates to cover it etc. in the end, i am very glad i didnt do it.

but...i didnt really have a choice. the building department said no, or at least it was no unless there was ventilation, sump pump, on and on. and the estimated price was getting extremely high.

and in the end, it makes that garage space unusable for anything else.

tom

[pairodice]

I was thinking for a pit I could just use a limited-depth Acme instant hole...

[newell_0]

I went down the path of having a 50' long pit with steps and grates to cover it etc.  in the end, i am very glad i didnt do it.  

but...i didnt really have a choice.  the building department said no, or at least it was no unless there was ventilation, sump pump, on and on.  and the estimated price was getting extremely high.  

and in the end, it makes that garage space unusable for anything else.  

tom

That is interesting. I would have done the same thing - not do it under those conditions. The one I had done for my car, I sort of did it the last minute after my house was complete. When I was getting ready to pour my garage floor I decided to do it and it was easy to do with sandy soil. For a motor home, we are talking about something much more substantial and can certainly understand the concerns.

[pairodice]

I'm reviving this thread again because I need to have somewhere to store the coach or else sell it! Some of you saw how dirty my coach had gotten while sitting out in the elements and I hate it being dirty!
Would I be able to build something that could be added to later like a pole barn-type building with just a roof and no sides, then later add sides, then later add doors?
I would like to build it about 60' x 20' x 20' high using 5" reinforced concrete...
I am going to check in to adding a storm shelter in it which would also double as a pit for working on it! Insurance costs are way less than a full-on pit as far as I can tell
Now I just need a lot in Madison, AL to put it on!