Author Topic: help - should have paid more attention at school  (Read 3016 times)

tartonterro

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help - should have paid more attention at school
« on: July 02, 2008, 21:31:10 »
im going to use some MDPE pipe to make large hoops for netting - but i cant work out how long i need to cut the pipe.
i want the hoops to be 2ft high and the hoops to cover an area of 4ft - does anyone know how to work out what length i need to cut the pipe?
i should have listened to Noddie - my old maths teacher more - but o no i knew better lol

davyw1

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Re: help - should have paid more attention at school
« Reply #1 on: July 02, 2008, 22:10:50 »
Lay the tube on the ground as below [attachment=1
When you wake up on a morning say "good morning world" and be grateful

DAVY

tartonterro

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Re: help - should have paid more attention at school
« Reply #2 on: July 02, 2008, 22:19:23 »
ingenious idea - never thought of doing that - will give it a go - thanks

asbean

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Re: help - should have paid more attention at school
« Reply #3 on: July 02, 2008, 23:17:19 »
Thank you Davyw1, I'm hopeless at anything mathematical, having failed O level three times with the lowest mark possible (or was that no mark at all) and I was going to ask a maths teacher to calculate it for me, but he would have given me a long lesson on how to do it etc etc (yawn yawn) so I've not tried it.  I will now  :) :)
The Tuscan Beaneater

Vortex

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Re: help - should have paid more attention at school
« Reply #4 on: July 02, 2008, 23:45:31 »
You mean you want a 2ft radius half circle - the circumference of a circle is 2xPIxR- you want half ie PIxR or 6.28 feet.
I cut mine at 7' 6" allowing a good 6" to be inserted into the ground on either side.

Eristic

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Re: help - should have paid more attention at school
« Reply #5 on: July 03, 2008, 01:46:36 »
Try pi * dia / 2 + 2 * distance pushed into ground.

= 3 * 4 / 2 + 2 * 0.5
= 6 + 1
= 7

OK back to the beer.
« Last Edit: July 03, 2008, 01:48:11 by Eristic »

tim

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Re: help - should have paid more attention at school
« Reply #6 on: July 03, 2008, 07:04:20 »
Wish you'd been around when I did mine, Eristic!!

Warning - see how they bend inwards under strain.

Barnowl

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Re: help - should have paid more attention at school
« Reply #7 on: July 03, 2008, 11:18:10 »
I have the same problem Tim. Have been thinking of tying a bamboo along the top but haven't got round to it.

Kea

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Re: help - should have paid more attention at school
« Reply #8 on: July 03, 2008, 13:22:56 »
Yes mine bend inwards I kept meaning to tie a bamboo along the top too. The critical thing is to add the depth you want to put it into the soil very easy to forget that!

tartonterro

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Re: help - should have paid more attention at school
« Reply #9 on: July 03, 2008, 16:35:59 »
i saw someones in their garden at the side of the road and they used a spring loaded clip like you get for clipping hard wood plants to each other or canes im gona try that - will post some pics once im done

Barnowl

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Re: help - should have paid more attention at school
« Reply #10 on: July 03, 2008, 16:56:10 »
I push the ends of my hoops into the soil through copper pipe clips I've screwed to the inside of the raised bed. Reinforced the hose first by pushing bamboo up them but realised this may be a mistake since the bamboo will rot. Despite the extra support they still bend at the top.


tim

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Re: help - should have paid more attention at school
« Reply #11 on: July 03, 2008, 17:20:20 »
How do you use the clips, TTT?

I use clips to hold the fleece on.

Barnowl

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Re: help - should have paid more attention at school
« Reply #12 on: July 03, 2008, 18:16:05 »
Those look great.

I've been using giant clothes pegs, but they've only lasted two seasons before getting brittle and breaking.

MaryT

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Re: help - should have paid more attention at school
« Reply #13 on: July 03, 2008, 19:14:56 »
I use those grips Tim - really easy to use and only £1 a card up our local market.

davyw1

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Re: help - should have paid more attention at school
« Reply #14 on: July 03, 2008, 19:46:55 »
Why don,t you make your fleece tunnel on a more perminent bases which will make them more riged that can be removed when required
When you wake up on a morning say "good morning world" and be grateful

DAVY

euronerd

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Re: help - should have paid more attention at school
« Reply #15 on: July 03, 2008, 21:07:14 »
You could always make your own clips:


You can't please all of the people all of the time, but you can't upset them all at once either.

marie59

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Re: help - should have paid more attention at school
« Reply #16 on: July 03, 2008, 21:50:13 »
Yes mine bend inwards I kept meaning to tie a bamboo along the top too. The critical thing is to add the depth you want to put it into the soil very easy to forget that!
One of the old boys at my allotment gave me a good tip  today He said push a cane of a piece of one into the ground and have about 12" or there about above onto which you then place the tube " it will help to stay straight up"   he said  Haven't tried it but it sounds like it might work.   :-\

Kea

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Re: help - should have paid more attention at school
« Reply #17 on: July 04, 2008, 16:59:22 »
I've got wooden dowel cut into lengths they push into the ground and the tube over them, I think they'll last longer than canes and if i painted with wood preservative longer but i haven't.

davyw1

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Re: help - should have paid more attention at school
« Reply #18 on: July 04, 2008, 18:57:41 »
I don,t understand why you go to the trouble of keep having to stick them in the ground why don,t you bracket them to the side of the raised bed.

Do you make your raised bed covers like this[attachment=1]
When you wake up on a morning say "good morning world" and be grateful

DAVY

tim

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Re: help - should have paid more attention at school
« Reply #19 on: July 04, 2008, 19:38:27 »
Bright!

Why not? Because I don't keep the covers on the same beds.

And - addendum - I thought that the tube was bending but, of course, it's just leaning.

 

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