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Allotment Stuff => The Basics => Topic started by: Thegoodlife on March 27, 2008, 22:05:18

Title: poly tunnel rebuild
Post by: Thegoodlife on March 27, 2008, 22:05:18
well guys it took a while but its done,finish,finito.finale,complete.

after a few swear words and the lack of good weather its up and already has plants in it (2 alacante tomato plants) ;D ;D

(http://www.tescophoto.com/wpp/tesco/thumbnails/00000021/206854/p_17667765_9189476606.jpg)

put the door on this time ;D


(http://www.tescophoto.com/wpp/tesco/thumbnails/00000021/206854/p_17667763_4234385156.jpg)

not a bad recovery if a say so myself so bring it on you wind!!

i will do another post of the stages
Title: Re: poly tunnel rebuild
Post by: betula on March 27, 2008, 22:06:51
Well done.It looks fantastic. :)
Title: Re: poly tunnel rebuild
Post by: Uncle Joshua on March 27, 2008, 22:12:57
That looks great, what did the rebuild involve?
Title: Re: poly tunnel rebuild
Post by: Thegoodlife on March 27, 2008, 22:35:09
heres the pics from destruction to rebirth!! ;D

heres when we had a 90mph gust of wind recorded by our weather station on the allotment site.
So from this

(http://www.tescophoto.com/wpp/tesco/thumbnails/00000021/206854/p_17667766_1293929961.jpg)

as you can see a right mess but i started again with some modifications.

The new frame

(http://www.tescophoto.com/wpp/tesco/thumbnails/00000021/206854/p_17667758_5846659682.jpg)
as you can see ive done a centre spine to give it more stability.

20mm pvc pipe from an electrical wholesaler was used for the sheet support

(http://www.tescophoto.com/wpp/tesco/thumbnails/00000021/206854/p_16943208_9271572335.jpg)

I then used the centre spine to screw the 4 way boxes to it
(http://www.tescophoto.com/wpp/tesco/thumbnails/00000021/206854/p_17667756_7105625482.jpg)

pipe saddle clamps (metal) were used to secure the pipe at the base these were coverd in some bubble wrap to prevent the sheet being ripped when i put it over the frame.
I did use pvc saddle clamps on the last one but they just snapped.
A 1ft deep trench was dug around the frame for the sheet to be held down.
then to the last pic,which you have all seen ;D

Title: Re: poly tunnel rebuild
Post by: sheddie on March 27, 2008, 22:40:00
Hi thegoodlife - it looks fantastic and I'm completley envious!

If you don't mind me asking - were the PVC pipes expensive? (great idea by they way) - I wouldn't mind doing something similar but maybe on a smaller scale if its viable - also - does the polythene have to be a special kind t protect it from the sun?

cheers,
Sheddie
Title: Re: poly tunnel rebuild
Post by: mrf94 on March 27, 2008, 23:18:20
Well done that man

mrf
Title: Re: poly tunnel rebuild
Post by: Uncle Joshua on March 27, 2008, 23:39:51
I'm hoping to start my own in the next week of so, what did your pooly sheet cost? I have been quoted £145.
Title: Re: poly tunnel rebuild
Post by: aromatic on March 28, 2008, 00:05:52
 ;D ;D ;D Great job done!! Looks nice and sturdy.... 

(http://www.animated-gifs.eu/emoticons/0055.gif)
Title: Re: poly tunnel rebuild
Post by: DeeBee on March 28, 2008, 13:43:42
Green face - so jealous. Well done you for having a go at getting it back up again. I would have sulked most heartily! ;)
Let the wind try and bring this one down
Grrrrr...
Bring it on Mr Weather the polytunnel is ready for you!!!! :) ;D
Title: Re: poly tunnel rebuild
Post by: sims girl on March 29, 2008, 16:03:49

  ;D well done you  l would like to know if l could do this on my plot but it would have to be on a lot smaller and as my plot is on a hill can you tell me if there are any ideas that may help it to stay where it is as we also have a lot of high winds
Title: Re: poly tunnel rebuild
Post by: Thegoodlife on April 06, 2008, 12:17:48
list of goods do do your own tunnel.
10ft long x 8ft,prices at the side of the bits are a rough guide of cost & +vat

12L of 25mm electrical pvc white conduit. 0.90p per 3mtr length
2 x 25mm tee boxes 0.60p each
4x 4way boxes 0.80p each
20x 25mm metel spacer bar saddles 095/1.00 each
1 x pvc glue (ega wld as its known) £3.50 a tub
1 roll of gaffer tape (2.99 50mtr roll from boot sales)
1 roll 25mtrx4mtr poly sheet from B&Q £18.00.
box of screws (i used 8x2 & 8x1 1/2) & nails.
1x 4pack of lager or bitter
1 x a lot of swearing
1 x understanding wife/husband

The frame was built first with the 2 posts inside set in concrete,the door frame was built & two pieces of wood used in an "A frame see pics), my suggestion is on each end put another piece of wood half way up the A frame so it looks like a "w" as ive noticed when the sheet is placed on the frame a tightend the two end pipe,s pull in use the saddle clamps as well to clamp the pipe to stop this happening, then the spine was put up & screwed  down each end  rested on top of the door frame at each end.Glue the the pvc pipe together with the boxes, the 2 tee,s are the ends. Then the choice is yours you can glue 2ft cuts of the pipe to make it more robust down the centre if you do add 2 more lengths of pipe to the list allow glue to dry around 2/3hours for this so i suppose this job can be done first, then build the frame ;D.
once you have done this screw the boxes to the spine 2 8x1/12 on each box.make the door or you could build around a door if you have one ;D

After all that have a break

For the wood if you have a local sheet steel manf/fabricator ask them for the pallets the sheet steel gets deliverd on as this is good wood 4"x2" @ 2.4 mtr long, they will be happy to get rid of it, im always getting this from my local manf & fell lucky last week got 2 pallets made from oak i have 10l of 2.4mtr solid oak ;D.

when it comes to the sheet jointing i did 3 runs of gaffer tape both sides then got some 38mmx25mm wood (the fence panel repair wood i used £1.00 a 6ft length from homebase found some old bike rubber inner tubes and wrapped the joint around the wood & rubber tube and made a clamp then screwed this to the spine of the tunnel to make the sheet more upto the wind. when making the sheet tight dont go too mad, i buried it 18" deep at the other end of the tunnel the door frame ive made an air vent with valcro and the extra polythene i had left

any questions i will be happy to help.

1 week on i now have tommys around 3ft high and in flower, i have a good old super ser gas heater in there keeps the heat at a constant 25c & get this!! its a self watering tunnel as the condensation is great for it (very humid)



Title: Re: poly tunnel rebuild
Post by: Patrick King on April 26, 2008, 23:06:50
hey can you post some pictures of the inside.

Is the sheeting just the dust sheet B&Q do or is it a different type.
also how did you do the sheeting. did you roll its from one to the other then tape it or sum thing else?