Pole addition to Stick built

[kwb]

So I have a 36x42 that is good space for working but I would like to get some covered parking for stuff I can't / won't put inside.

My first thought was a long lean-to but to get 2 wide for toy trailers I end up with pretty hefty lumber to span it and the pitch of roof even if I break the 5/12 to a 3/12 will get fairly low.

Now what I am thinking is to do something like a 30' deep pole building and go out ~24' (2 bays). Instead of doing trusses out the full length if I set 4 posts I could put up 4 trusses and purlins and sheet that for my space and be well situated if I want to add another bay in the future.

Tell me why this is a bad idea - I have no intention of a real floor or enclosure of this space.

 

[James-W]

Around here, before we can build a structure of that size, we need to get approval from the city. I suggest you contact whoever it is that controls building in your locality and inquire as to what you can and can't do. Until you know what is permitted, it is hard to make plans.

 

[kwb]

I know I need to permit it. That wasn't my question.

 

[James-W]

I know I need to permit it. That wasn't my question.

I didn't say you need to get a permit, I said you need to find out what is and what isn't allowed. We can suggest all sorts of things, but if what we suggest isn't allowed then what is the point in our responding? Find out what you can do and let us know. You will get all sorts of suggestions.

 

[matt_i]

Now what I am thinking is to do something like a 30' deep pole building and go out ~24' (2 bays). Instead of doing trusses out the full length if I set 4 posts I could put up 4 trusses and purlins and sheet that for my space and be well situated if I want to add another bay in the future.

Tell me why this is a bad idea - I have no intention of a real floor or enclosure of this space.

The way I'm reading is that you are just having a roof sit on 4 columns.

Need very careful preparation for racking of the posts due to not much shear. Need very careful preparation for uplift due to the large potential area that can be acted upon by the wind. Need very careful preparation so birds don't start roosting inside of it, which causes a giant mess.

 

[kwb]

I didn't say you need to get a permit, I said you need to find out what is and what isn't allowed. We can suggest all sorts of things, but if what we suggest isn't allowed then what is the point in our responding? Find out what you can do and let us know. You will get all sorts of suggestions.

I can build all the buildings I want up to a limit and I am way below the limits of covered area. As long as the plans are stamped and the check is good they will give me a permit. If they aren't stamped then I have to use standard framing methods.

I was asking about if anyone had experience with a hybrid structure like this. I don't see it much differently than an attached/covered porch where posts are basically independent foundations from the house but since there is a wealth of experiences here I put it out there.

 

[Blazinzuk]

My house has a patio attached. The only difference I see from it and a pole barn is my posts are attached to the concrete pad. The roof is attached to the house roof and has not leaked in the 3 years we have been here.

Based on that I don't think it would be an issue

 

[finn]

My shop is stick built with a pole lean to.

The roof leaks at the pole addition interface.

Last year I inquired about building a pole framed addition to the main building to shelter my fifth wheel trailer (it’s too tall for the lean to.)

The answer was that the inspector requires similar construction on attached buildings, ie a monolithic slab if the existing building has a monolithic slab, etc.

Not sure how my pole lean to got approved. Probably the previous inspector or the fact that it didn’t originally have a concrete floor.

 

[kbs2244]

Your existing slab "floats" with the seasons.
A pole building, or add on, will not.
Where they meet needs to flex enough to handle the difference.