Manufacture of a greenhouse tunnel market gardening

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bleusideral
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by bleusideral » 04/05/12, 13:15

I don't see the shape of an airplane wing, but the classic shape of the tunnel greenhouse : Shock:
for the wind resistance I suggest what Ahmed recommends: tension wire at the end of the greenhouse making the "turn" of the half barrel shape, possibly replaced by a small stainless steel cable is anchored by the famous tendrils, in this case think that the wind will have difficulty in setting the greenhouse up or deforming the arches, .. : Lol:

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Rabbit
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by Rabbit » 04/05/12, 14:54

I did not invent the spin, it is part of the kit. But she
is perfectible because it is not possible to screw it into the ground
if it is too compact or rocky.

The ventilation is on 2 hinges 40 mm X 60 mm.
Plastics that exceed outside are voluntarily. Indeed they
serve as a seal when the ventilation is closed. The system of
closing and opening is automatic. And this thanks to this
clever system:
http://www.chalet-jardin-boutique.fr/ar ... il-212.htm .

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On this photo (above) we see the top join for the water,
and the one around the edge which prevents the wind from rushing into the
squeezes in cold and windy weather (especially when the wind is blowing
on this face.

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On the photo above we see that there is still some plastic to cut

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Regarding the risk of the greenhouse flying away, if it is closed, that the
plastic film is well fixed to the ground. There is no reason
that it flies away under normal conditions. It's sure that
if there is a tornado ... but at that time the greenhouse will not be
more a priority. Mine has already suffered winds of 90 to 100 km / h
without smiling. We will see in the fall for winds at 110 or more.
As I think about it, I still have to place the strings over the film
plastic, it is to fix them that the hook is provided on the tendrils.
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Ahmed
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by Ahmed » 04/05/12, 17:44

For ventilation, the only solution you have left (apart from opening the door) is to spread two slits at the level of the covering with a plastic crate, this at the level of the 2 right feet.
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Rabbit
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by Rabbit » 04/05/12, 20:07

Ahmed wrote:For ventilation, the only solution you have left (apart from opening the door) is to spread two slits at the level of the covering with a plastic crate, this at the level of the 2 right feet.


If it is for me, I did not understand too much.Image
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Ahmed
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by Ahmed » 04/05/12, 22:08

Well, you already understood that it was for you! : Cheesy:

It is true that it is not too clear, better a drawing!
I resume: if you have several leaves to cover your greenhouse, their junction implies a covering of, say, 60cm (on the left in the drawing); it is then possible to create a diamond-shaped opening by spreading the 2 edges on the 2 opposite sides of the right feet and by inserting a crate to keep the edges apart (on the right, the same in the open position).
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bleusideral
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by bleusideral » 05/05/12, 09:18

Hello
Thank you Rabbit for the photos, I find this cylinder system very judicious and practical when we are not there
I noticed your wooden structure, you are in a region where it can last a little long, here in the south it would be rotten in one season :|
For the spacing of the plastic sheeting, I am not too much for it damages the tarpaulin by relaxing it, I have cornered it on agricultural greenhouses, but these are large greenhouses with labor, I have the impression that plastic is renewed more quickly than what I hope in lifespan for mine, moreover I chose the best quality which must last (in theory) 7 years (I have doubts under my almost tropical climate in summer!), it is more expensive 180 € 30m x 6.50

I come back to the cylinder which reminds me of the Stirling, I wonder if we could not tinker one with a cylinder a little tired of car trunk on which would be grafted a small air balloon to feed the bottom of the cylinder


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Rabbit
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by Rabbit » 05/05/12, 10:52

bleusideral wrote:
I noticed your wooden structure, you are in a region where it can last a little long, here in the south it would be rotten in one season :|


Here the tree lasts 7 years min without visible alterations if it is immersed in the water, Exposes outside + - 60 years (walls of my barn)
and + - 3 years laying on the ground.
In my case that of the fact will have to last 10 years min by cons those
along the ground will have to be replaced within 5 years.
tarpaulin is used, I will have to redo everything anyway from here
3 to 4 years max. I did it dearly and it gives me time to
find a more sustainable solution.

I come back to the cylinder which reminds me of the Stirling, I wonder if we could not tinker one with a cylinder a little tired of car trunk on which would be grafted a small air balloon to feed the bottom of the cylinder

It's not worth it, the cylinder costs + -10 € incl.
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bleusideral
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by bleusideral » 05/05/12, 12:40

The link you give, the actuator is worth 59 € !! I am also looking for savings!
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by Rabbit » 05/05/12, 17:47

The kit costs 49 € at Oh green oh green But the jack alone 10 €. It is a piece that wears out and
must be replaced every 2 years.

Another address for the kit.
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bleusideral
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by bleusideral » 06/05/12, 11:31

Hello, good Sunday and good vote Image : Mrgreen:

greenhouse advance

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