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Author Topic: Shed base questions  (Read 1949 times)

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Gaffers

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Shed base questions
« on: 05 November 2013, 20:21:30 »

When I move in to the new place (eventually >:() I need to fit a shed in the garden PDQ.  The shed will be 10x8 and I will be laying a concrete base.  I have been reading up o a few things and I understand that:

- I need a compacted sub-base which is 100mm thick and which extends 300mm wider than the concrete area,
- I need to put a damp-proof membrane between sub-base and the concrete and this should extend over the wood frame,
- The concrete should be 100mm thick and level.

I hope to get in to the house in the next couple of weeks but by then I fear the temperature would be too low to lay concrete:

- Would the low temperature affect something as simple as a shed base?
- Would it affect the structure/load-bearing (not that important as it is just a shed)
- How can I lay the concrete in colder temperatures?  throw tarpaulin over it and stick a space heater under that?  :-\
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Keith ABS

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Re: Shed base questions
« Reply #1 on: 05 November 2013, 20:28:06 »

  If its to cold when you do the concrete, you can buy an addative to prevent the unset concrete from freezing and wrecking its self. Good builders merchants will stock it
Keith B
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Gaffers

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Re: Shed base questions
« Reply #2 on: 05 November 2013, 20:32:38 »

You see, that's why I like OOf.  A couple of hours research on the web and not one place mentioned this additive.

Cheers Keith :y
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redelitev6

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Re: Shed base questions
« Reply #3 on: 05 November 2013, 20:34:41 »

You could ask your concrete supplier to add some winter mix into the concrete ( antifreeze basically) , also don't get too much water in the mix, brickies love a nice sloshy mix as it virtually lays and levels itself itself ! if it is freezing when it's laid you need to cover it up to keep the frost off it , straw is a good one , but you'd be unlucky to have it damaged unless it was REALLY cold
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Terbs

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Re: Shed base questions
« Reply #4 on: 05 November 2013, 21:46:48 »

Just had a 10 x 7'6 base laid for my shed/aviary. It was just dug out, 100mm, then the ground impacted with one of them vibrating thingy's, then boards fitted. Midway through concreting, a reinforcing grid was inserted, then filled up to the top. Well pleased with it. :y

First time I have built anything square, having a decent base ;D ;D
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Marks DTM Calib

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Re: Shed base questions
« Reply #5 on: 06 November 2013, 08:13:23 »

100mm thickness wont benefit greastly from a steel rebar grid.

You should, dig out and compact a decent sub base and then lay the concrete on top, 100mm sub base and 100mm concret should be more than good enough for a shed base.
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Andy B

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Re: Shed base questions
« Reply #6 on: 06 November 2013, 09:01:06 »

I just put my 8'x6' shed on 3 concrete fence posts laid on the the ground ......  ::) It's not gone anywhere yet  ;D
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Gaffers

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Re: Shed base questions
« Reply #7 on: 06 November 2013, 09:08:39 »

I just put my 8'x6' shed on 3 concrete fence posts laid on the the ground ......  ::) It's not gone anywhere yet  ;D

I need to have a ground anchor cemented in to the base so I can lock certain things down :y
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Sir Tigger KC

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Re: Shed base questions
« Reply #8 on: 06 November 2013, 09:11:27 »

I just put my 8'x6' shed on 3 concrete fence posts laid on the the ground ......  ::) It's not gone anywhere yet  ;D

When my mate and I built his shed a few years ago, we leveled the ground, whacked it flat with a shovel then laid paving slabs (dry) and built the shed on that.  It's still standing!!  :y

Ground anchor is also simple, bang a long iron bar into the ground.  :y

« Last Edit: 06 November 2013, 09:15:00 by Sir Tigger »
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Andy B

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Re: Shed base questions
« Reply #9 on: 06 November 2013, 09:14:21 »

I just put my 8'x6' shed on 3 concrete fence posts laid on the the ground ......  ::) It's not gone anywhere yet  ;D

I need to have a ground anchor cemented in to the base so I can lock certain things down :y

Will a concrete floor to the shed not cause damp problems?  :-\ :-\
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biggriffin

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Re: Shed base questions
« Reply #10 on: 06 November 2013, 09:54:44 »

You putting a shed up not an industrial unit. Dig down about 1ft fill hole with old bricks,slabs etc bike frames omega engine bits. Pour concrete on to that level with a scafffold board,and put some bent prices off steel rod into concrete while wet to use as anchorage points for your valuables that you wish to lock up.

regards bodge it and scarper. The old school builders. ;)
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twiglet

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Re: Shed base questions
« Reply #11 on: 06 November 2013, 10:11:50 »

I won't mention what the construction of my shed base is then!  :-X ;D
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Marks DTM Calib

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Re: Shed base questions
« Reply #12 on: 06 November 2013, 10:26:58 »

The best approach is to build your base such that it is actualy the floor of your shed and do away with the crappy wooden floor.

Oh yes, old conrods make great ground anchors if cast into the conrete with the little ends sticking out.
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Gaffers

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Re: Shed base questions
« Reply #13 on: 06 November 2013, 10:46:46 »

The best approach is to build your base such that it is actualy the floor of your shed and do away with the crappy wooden floor.

That is the intent :y
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bigegg

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Re: Shed base questions
« Reply #14 on: 06 November 2013, 23:48:21 »

Or just have a 10ft container delivered, and shiplap the outside so it looks like a shed :)
Weld anchors wherever you want.
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