Shed base question?
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steve1

Original Poster:

1,251 posts

266 months

Tuesday 18th May 2010
quotequote all
As per title, want to construct a base to stand a 12'x8' timber shed on, also want to fit some decking along the front to make it look a little better, ( also somewhere to sit to catch the evening sun ).
Have decided on a timber frame, a couple of reasons, it will allow the shed base more of a chance to breathe and hopefully it will last longer, secondly I will be building a frame for the decking so might as well just make it bigger for the shed.
Anyway, question is, how strong do i make the frame for the shed, I have built decking frames before, but I would have thought that a frame for a 12x8 shed would have to be a bit stronger to carry the extra load.
It will be built from 6x2 timbers with 4x4 posts in the ground, so do I follow the same format as per decking base, or beef it up a bit with more timbers.
Thanx.

Laurel Green

31,002 posts

254 months

Tuesday 18th May 2010
quotequote all
I would have thought 6x2 joists to easily be up to the job. Sheds (wooden) are not overly heavy and is only what is to be stored in them that could present a problem.

sherman

14,847 posts

237 months

Tuesday 18th May 2010
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Put some extra cross bracing in the base but also make sure there is also a few holes or vents in the base for good air circulation.

Mr E Driver

8,542 posts

206 months

Tuesday 18th May 2010
quotequote all
Make sure it is level and does not move.

silverthorn2151

6,355 posts

201 months

Tuesday 18th May 2010
quotequote all
I watched a programme on some awful channel a while back about sheds. (sad, I know)

One impressed me and I have resolved to use this when I get round to rebuilding the shed.

They formed foundations by sinking 100mm plastic drainpipes into the ground, like piles, then filled them with concrete. They could get the top of the concrete excatly level, and just above ground level. They then formed a framework of timbers to support the walls and floors and included piles accross the centre of the shed to break up the span of the floor joists.

The piles were about 3 feet deep and they used a mechanical auger that you can hire. Simple idea, less digging and a good firm base allowing some air movement below the shed.

steve1

Original Poster:

1,251 posts

266 months

Wednesday 19th May 2010
quotequote all
That prog. was called "shedheads" I think.
On the question of the base, just starting to sketch it out, and thought that along the 12' side that 1 support post in the middle would be enough, so 6' span, should i beef this up and put 2 along that length, so 4 in all counting the ones at each corner.
Rather be too much than not enough.

silverthorn2151

6,355 posts

201 months

Wednesday 19th May 2010
quotequote all
That's the one!

Depends of course on the size of timbers you are going to use, but a 6' span for timber of a reasonable size is really very little. In practice I suspect you would be using two timbers together to form the external rails of the base, perhaps 2 6 x 2's, and if you fix them together it's be as strong as....um.....a strong thing.

steve1

Original Poster:

1,251 posts

266 months

Wednesday 19th May 2010
quotequote all
I will be using 6x2's all round, not doubling up, so the question is 3 supports along a 12' length, or 4?

Mr E Driver

8,542 posts

206 months

Wednesday 19th May 2010
quotequote all
The more the better!