Brick storage building, footings and strength query.....

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I want to build this small brick storage space in my garden, about 2m long, 1.4m wide, 1m high (the plan here isn't finalized). Probably add a simple fixed down wood and felt flat roof. I might add a metal door to the open side. Im wondering if this plan is strong enough - its small and short so I am wondering: is it strong enough with no brick towers? Would 10 inch footings be okay? (onto hard clay soil)? Can i hang a custom metal door to this single skin building? (less than 1m by 1m door). Thanks for advice, me and my Dad are not agreeing on what's needed here so I would like another opinion! I don't want to go OTT on this but I want to do a nice job of it
 
As Johnny re piers.

I would actually build a reinforced slab to found it on if you're on clay, Much less likely to come apart then and you have a floor
 
Timber is rubbish. Against my wishes, I put a wooden fence in 6 years ago, it's now compost at the base of the posts and ready to fall over.
He's not building a fence.
Also, that's not how you build a timber fence, I built a timber fence when I was 5 years old and the posts lasted 40 years.
 
It's a small garden store, not HS2. Don't overthink or over-engineer. But think of the practicalities.

100mm unreinforced slab on 100mm hardcore, finishing at ground level to form the floor and take the walls. The proposed walls are fine.

The long, low design might make accessing the rear awkward, necessitating a hinged roof. A flat felt roof will be very heavy and need timber sections sufficient to prevent sag.
 
Probably posts were soaked in engine oil (my favourite), creosote or bitumen.
That's how you make a post last 40 years.
 
Probably posts were soaked in engine oil (my favourite), creosote or bitumen.
That's how you make a post last 40 years.
Maybe.

We've booted over treated pine 'railway sleepers' as they were rotted through at ground level. Timber products at ground level are next to useless, even those that have been treated.

Impregnated proper railway sleepers on the othere hand.... (y) However, these are in contact with track ballast which is free draining and not as toxic (to the timber) as soil.
 
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Aye, deadly toxic carcinogens all over your garden.

Some make raised borders from treated wood then grow their veggies in them, utterly insane and would definitely not be allowed commercially.
 

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