Does size matter? Is 6" enough?

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Does size matter? Is 6" enough?
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earthyvirgo

Joined: 24 Aug 2007
Posts: 7972
Location: creating prints in the loft, Gerlan

Posted: Sat Jun 08, 13 8:12 pm Post subject:
That looks great Richard. Polytunnel envy EV

Mr O

Joined: 13 Feb 2005
Posts: 5512
Location: Nova Scotia, Canada

Posted: Sat Jun 08, 13 8:21 pm Post subject:
Yep , puts mine to shame!

12Bore

Joined: 15 Jun 2008
Posts: 9089
Location: Paddling in the Mersey

Posted: Sat Jun 08, 13 8:39 pm Post subject:
Impressed!

RichardW

Joined: 24 Aug 2006
Posts: 8443
Location: Llyn Peninsular North Wales

Posted: Sat Jun 08, 13 9:14 pm Post subject:
Not bad for �220 (inc the new cover) plus lots of wood from the left over stock pile.

Mistress Rose

Joined: 21 Jul 2011
Posts: 15998

Posted: Sun Jun 09, 13 7:58 am Post subject:
We have used a similar style to make a log drying store, and the only thing we have found is that if it snows the pipe tends to bend and not straighten out. Your bracing may be enough to stop this, but if it does look like a problem, some extra bracing with scaffold poles will solve the problem. Not pretty, but very effective.

cassy

Joined: 04 Feb 2008
Posts: 1047
Location: South West Scotland

Posted: Sun Jun 09, 13 8:53 am Post subject:
Looks brilliant; wishing you may happy growing seasons!

gray_b

Joined: 24 Jun 2011
Posts: 254
Location: Leafy Shires of the Midlands

Posted: Sun Jun 09, 13 10:28 am Post subject:
I remember a few years ago 2004 a frame being made out of solvent welded upvc pipe at Trevarno (currently sold), Cornwall. Not sure what happened to it. But it seemed more rigid. Obviously it was of a traditional greenhouse shape. But would give more vertical height at the sides. Any thoughts.

RichardW

Joined: 24 Aug 2006
Posts: 8443
Location: Llyn Peninsular North Wales

Posted: Sun Jun 09, 13 2:19 pm Post subject:

My initial thoughts are

that will be costly

what will they cover it with & how?

The roof trusses/joists are very long with no intermediate supports

They seem to have made some odd decisions about how to make up some of the joints leaving some critical sections badly supported. Especially the gable ends in the corner & middle gutter section.

I actually think it will be less rigid than a standard polytunnel shape.

For the roof I would have made up some trusses as now used on modern style "rabbit" houses. Using triangulation for strength.

Would have been good fun actually working on it though.

Mithril

Joined: 22 Jul 2011
Posts: 1755
Location: wessex

Posted: Sun Jun 09, 13 2:34 pm Post subject:

RichardW wrote:

Finally got round to putting the cover on. Up to now its had a temp cover

Looks fab - good luv with it

RichardW

Joined: 24 Aug 2006
Posts: 8443
Location: Llyn Peninsular North Wales

Posted: Sun Jun 09, 13 9:31 pm Post subject:

Mithril wrote:

good luv with it

I shall pass your suggestion on to the OH

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