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Weight of bark chips

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Sue Begg

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Aug 5, 2005, 4:47:36 AM8/5/05
to
Hi, Does anyone know how much bark weighs?

We have 2 suppliers locally - one sells by cubic metre, the other by the
ton. Without a conversion figure it is like trying to compare apples and
oranges and since I need about 12 cu metres a small difference could
make a big impact on my pocket :-))
--
Sue
Remove the puppies to reply

Teleman

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Aug 5, 2005, 5:32:38 AM8/5/05
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"Sue Begg" <s...@puppies.whinhill.me.uk> wrote in message
news:J7g+xJHo...@whinhill.me.uk...

You tried phoning them and asking ?
I imagine a lot would depend on the size of the
actual "chips" themselves - the smaller the chip, the
more tightly they pack together, and the more each
cubic metre would weigh


Teleman


Nick Maclaren

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Aug 5, 2005, 6:19:24 AM8/5/05
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In article <42f33235$0$24036$ed26...@ptn-nntp-reader01.plus.net>,

"Teleman" <tel...@nospamegremont.plus.com> writes:
|>
|> You tried phoning them and asking ?
|> I imagine a lot would depend on the size of the
|> actual "chips" themselves - the smaller the chip, the
|> more tightly they pack together, and the more each
|> cubic metre would weigh

Er, no. It depends on the SHAPE of the chips. The packing
density is independent of the scale. Yes, there may be (in
practice) a correlation between shapes that pack densely and
a small size, but it is indirect and the type of bark is more
important than the size.

Regards,
Nick Maclaren.

Jaques d'Alltrades

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Aug 5, 2005, 6:28:26 AM8/5/05
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The message <J7g+xJHo...@whinhill.me.uk>
from Sue Begg <s...@puppies.whinhill.me.uk> contains these words:

> Hi, Does anyone know how much bark weighs?

> We have 2 suppliers locally - one sells by cubic metre, the other by the
> ton. Without a conversion figure it is like trying to compare apples and
> oranges and since I need about 12 cu metres a small difference could
> make a big impact on my pocket :-))

Sorry - it depends on the density of the bark and the water content.

--
Rusty
Emus to: horrid dot squeak snailything zetnet point co full-stop uk
http://www.users.zetnet.co.uk/hi-fi/

michael adams

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Aug 5, 2005, 6:55:54 AM8/5/05
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"Sue Begg" <s...@puppies.whinhill.me.uk> wrote in message
news:J7g+xJHo...@whinhill.me.uk...

...


Googling "chipped bark" and "bulk density" gives the following
figures in the text preamble to the first link on the page. The
actual link is of no use, simply leading to an Ask.Jeeves listing
of chipped bark suppliers in Scotland.

<quote>

The bulk density of chipped bark is low (150 - 250 g/ltr)

</quote>

I can only suggest you do your own working out from this
point as I don't trust my own calculations


1000 litres = 1 cu.metre

12 cu.metres X 1000 = 12000 litres required

12000 X 150 grm = 1800,000g = 1800 kg = 1.8 metric tonnes

1200 X 250 = 3000,000g = 3000 kg = 3 metric tonnes.

[which seems awfully heavy for what is after all, just over
a 6ft cube of chipped bark ]

But there you go.

michael adams

..


Martin Sykes

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Aug 5, 2005, 7:02:58 AM8/5/05
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"Nick Maclaren" <nm...@cus.cam.ac.uk> wrote in message
news:dcvefc$66j$1...@gemini.csx.cam.ac.uk...

The mix of sizes is important too. The small bits can fill in the gaps
between the larger bits.

Whether they sell it wet or dry will make a big difference too - with weight
you'll end up paying for the water. I'd expect dry wood chips to float so 1
cubic metre would weigh less than a tonne - Google turned up ratios of
between 0.25 and 0.75 so there is a big range but take the middle of 2 cubic
metres = 1 tonne and you won't be far off.

--
Martin & Anna Sykes
martins...@sykesm.xglobalnetx.co.uk ( Remove x's when replying )
<http://www.users.globalnet.co.uk/~sykesm>


Martin Sykes

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Aug 5, 2005, 7:05:25 AM8/5/05
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"michael adams" <mjad...@onetel.com> wrote in message
news:3lguprF...@individual.net...


>
> 1200 X 250 = 3000,000g = 3000 kg = 3 metric tonnes.
>
> [which seems awfully heavy for what is after all, just over
> a 6ft cube of chipped bark ]
>

But then 1 cubic metre of water weighs 1 tone so a 6ft cube of water would
weight about 5.8 tonnes.

Charlie Pridham

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Aug 5, 2005, 6:27:52 AM8/5/05
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"Teleman" <tel...@nospamegremont.plus.com> wrote in message
news:42f33235$0$24036$ed26...@ptn-nntp-reader01.plus.net...
I would instinctively avoid anyone trying to sell by weight, if its been
raining you will be paying for water! bulk materials like this are nearly
always sold by volume.

--
Charlie, gardening in Cornwall.
http://www.roselandhouse.co.uk
Holders of National Plant Collection of Clematis viticella (cvs)


shazzbat

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Aug 5, 2005, 7:52:41 AM8/5/05
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"michael adams" <mjad...@onetel.com> wrote in message
news:3lguprF...@individual.net...
>
> "Sue Begg" <s...@puppies.whinhill.me.uk> wrote in message
> news:J7g+xJHo...@whinhill.me.uk...
> > Hi, Does anyone know how much bark weighs?
> >
> > We have 2 suppliers locally - one sells by cubic metre, the other by the
> > ton. Without a conversion figure it is like trying to compare apples and
> > oranges and since I need about 12 cu metres a small difference could
> > make a big impact on my pocket :-))
> > --
> > Sue
> > Remove the puppies to reply
>
> ...
>
>
> Googling "chipped bark" and "bulk density" gives the following
> figures in the text preamble to the first link on the page. The
> actual link is of no use, simply leading to an Ask.Jeeves listing
> of chipped bark suppliers in Scotland.
>
> <quote>
>
> The bulk density of chipped bark is low (150 - 250 g/ltr)
>
The density of most woodchip products is in this range. Allow 4 Cu m per
tonne and you won't be far out

Of course the density changes daily according to conditions, so what they do
at ECO is a test weighing each morning to ascertain the density that day.
It's mostly sold by the metree, but the vehicles are weighed out and charged
by weight so you need the conversion figure for that day.


> [which seems awfully heavy for what is after all, just over
> a 6ft cube of chipped bark ]
>

That's because a 6ft cube = 6.12 Cu m, not 12.

Steve


michael adams

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Aug 5, 2005, 8:55:19 AM8/5/05
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"shazzbat" <shaz...@spamlessness.co.uk> wrote in message
news:dcvk7c$876$1...@newsg4.svr.pol.co.uk...

12 cubic metres = 2.3 x 2.3 x 2.3 metres

2.3metres = 7ft. 3in

So a 7ft 3in cube then.


michael adams

2.3 metres -


>


Janet Baraclough

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Aug 5, 2005, 10:52:04 AM8/5/05
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The message <42f352e1$1...@mk-nntp-1.news.uk.worldonline.com>
from "Charlie Pridham" <charlie...@lineone.net> contains these words:

> I would instinctively avoid anyone trying to sell by weight, if its been
> raining you will be paying for water!

Ditto.

If it hasn't been raining, the supplier no doubt has a hosepipe. I'd go
for the volume-purchase.

Janet.

Brian

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Aug 5, 2005, 2:21:51 PM8/5/05
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"Teleman" <tel...@nospamegremont.plus.com> wrote in message
news:42f33235$0$24036$ed26...@ptn-nntp-reader01.plus.net...
>
___________________
Take care. Many suppliers use the 'ton' as a measure of volume rather
than weight. If they fill a ten ton truck level then they often call that
ten tons; whereas the actual weight would be very much less. For true weight
a weighbridge would need to be involved; which is most unlikely.
Best Wishes Brian.
>
>


Sue Begg

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Aug 5, 2005, 2:44:58 PM8/5/05
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In message <42f3a...@mk-nntp-2.news.uk.tiscali.com>, Brian
<bf...@tiscali.co.uk---.invalid> writes
Thanks to everyone for your replies. At £40 a cu metre I am having to do
a lot of sweet-talking to hubby but at least I am clearer of what the
options are now

Mike Lyle

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Aug 5, 2005, 6:17:24 PM8/5/05
to
Sue Begg wrote:
[..]

> Thanks to everyone for your replies. At £40 a cu metre I am having
to
> do a lot of sweet-talking to hubby but at least I am clearer of
what
> the options are now

While you're sweet-talking, consider why you want the stuff in the
first place. It looks awful, and has no nutritional value. Earth
should be covered with plants, not refuse the Forestry Commission's
desperate to get rid of.

--
Mike.


Sue Begg

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Aug 5, 2005, 7:15:22 PM8/5/05
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In message <3li6siF...@individual.net>, Mike Lyle
<mike_l...@REMOVETHISyahoo.co.uk> writes
Yes I do agree with you and in a couple of years it will be, but it is a
garden in its first year. The bed is about 35m x 4m and already has over
300 assorted shrubs and perennials in it. (It is probably overplanted
really) but at the moment it has enormous amounts of bare earth and
because the ground has never been garden before, I am getting the last
50 years accumulated seeds all seeing daylight and germinating. In the
space of a couple of weeks it has sprouted a fine crop of rape seed :-((
The bark is the only thing I can think of to keep me sane while waiting
for the plants to spread and cover it. I don't want to put anything too
permanent on as I know I will have to move, divide and swap plants
around once they really start to grow.

shazzbat

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Aug 6, 2005, 9:10:13 AM8/6/05
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"Sue Begg" <s...@puppies.whinhill.me.uk> wrote in message
news:kQ4F73cKM$8CF...@whinhill.me.uk...
Do you want the bark chips just for mulching or is visual appeal a factor.
It seems to me that you would save a bundle by getting contract mulch rather
than bark chips.

What part of the country are you in by the way?

Steve


Sue Begg

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Aug 6, 2005, 11:28:23 AM8/6/05
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In message <dd2d38$cr$2...@newsg3.svr.pol.co.uk>, shazzbat
<shaz...@spamlessness.co.uk> writes
I'm 30 miles north of Aberdeen.

The visual appeal is a very temporary thing as I hope by next summer (or
certainly the summer after) there won't be any bare ground showing. I
tend to like wild and woolly cottage style beds :-))

All I need really is something that won't become a pest in the future
-therefore anything stony is out. I have used broken slate on another
bed and have found it a nuisance when moving plants as it is quite
difficult to clear a patch and not end up burying any.

Sacha

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Aug 6, 2005, 12:51:00 PM8/6/05
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On 5/8/05 23:17, in article 3li6siF...@individual.net, "Mike Lyle"
<mike_l...@REMOVETHISyahoo.co.uk> wrote:

Actually, we had a thread about this very subject (bark chips and nutrition)
a couple of years ago. We had visited a friend's beautiful garden in
Jersey, famous for its Camellias, only to find her wringing her hands
because the Camellias' leaves were slowly turning yellow. My husband was
able to point out to her that her gardener had put down bark chippings to
save weeding and that in rotting down, the bark chippings were leaching all
the nitrogen from the soil. In time, it will correct itself, or so I think
I recall Ray saying, but of course by then the damage is done. While
Camellias might recover at a guess, other, less woody or young plants might
not, I imagine. They could be fed, of course but that rather defeats the
labour-saving objective!
--
Sacha
www.hillhousenursery.co.uk
South Devon
(remove the weeds to email me)

Rusty Hinge

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Aug 6, 2005, 1:02:47 PM8/6/05
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The message <v9OXQahX...@whinhill.me.uk>

from Sue Begg <s...@puppies.whinhill.me.uk> contains these words:

> I'm 30 miles north of Aberdeen.

I'm Strichen with curiosity...

--
Rusty
There are 10 kinds of people in the world, those who read binary and
those who don't.
http://www.users.zetnet.co.uk/hi-fi/

Sue Begg

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Aug 6, 2005, 2:15:33 PM8/6/05
to
In message <3130303032303...@zetnet.co.uk>, Rusty Hinge
<horrid...@zetnet.co.uk> writes

>The message <v9OXQahX...@whinhill.me.uk>
>from Sue Begg <s...@puppies.whinhill.me.uk> contains these words:
>
>> I'm 30 miles north of Aberdeen.
>
>I'm Strichen with curiosity...
>

Oldwhat - between New Deer and Maud :-)
Used to go to the Mormond pub in Strichen - fond memories

Jaques d'Alltrades

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Aug 6, 2005, 3:11:34 PM8/6/05
to
The message <0e6hYjmF...@whinhill.me.uk>

from Sue Begg <s...@puppies.whinhill.me.uk> contains these words:
> In message <3130303032303...@zetnet.co.uk>, Rusty Hinge
> <horrid...@zetnet.co.uk> writes
> >The message <v9OXQahX...@whinhill.me.uk>
> >from Sue Begg <s...@puppies.whinhill.me.uk> contains these words:
> >
> >> I'm 30 miles north of Aberdeen.
> >
> >I'm Strichen with curiosity...
> >

> Oldwhat - between New Deer and Maud :-)
> Used to go to the Mormond pub in Strichen - fond memories

I used to have an Aunt Maude, but she was about five miles to the east
of New Deer, IYSWIM.

(I know where New Deer is, but I've never been to/through Maud AFAIK. I
had a schoolfiend who lived at Banchory though.)

shazzbat

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Aug 6, 2005, 12:08:03 PM8/6/05
to

"Sue Begg" <s...@puppies.whinhill.me.uk> wrote in message
news:v9OXQahX...@whinhill.me.uk...

> In message <dd2d38$cr$2...@newsg3.svr.pol.co.uk>, shazzbat
> <shaz...@spamlessness.co.uk> writes
> >
> >"Sue Begg" <s...@puppies.whinhill.me.uk> wrote in message
> >news:kQ4F73cKM$8CF...@whinhill.me.uk...
> >> In message <3li6siF...@individual.net>, Mike Lyle
> >> <mike_l...@REMOVETHISyahoo.co.uk> writes
> >> >Sue Begg wrote:
> >> >[..]
> >>
> >Do you want the bark chips just for mulching or is visual appeal a
factor.
> >It seems to me that you would save a bundle by getting contract mulch
rather
> >than bark chips.
> >
> >What part of the country are you in by the way?
> >
> >Steve
> >
> >
> I'm 30 miles north of Aberdeen.
>
> The visual appeal is a very temporary thing as I hope by next summer (or
> certainly the summer after) there won't be any bare ground showing. I
> tend to like wild and woolly cottage style beds :-))
>
> All I need really is something that won't become a pest in the future
> -therefore anything stony is out. I have used broken slate on another
> bed and have found it a nuisance when moving plants as it is quite
> difficult to clear a patch and not end up burying any.
> --
> Sue
> Remove the puppies to reply

Ah, I'm 8 miles outside Bournemouth, so you won't want to pay my delivery
charges there!

But anyway, for the purposes you describe, I would suggest contract mulch,
the basic mulch, the stuff the builders use between the shrubs at
supermarket sites etc.

I don't know your local suppliers, but if you check out ecocomposting, they
have pictures, specifications etc to help you choose.

Steve


Martin Brown

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Aug 7, 2005, 5:36:35 AM8/7/05
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Nick Maclaren wrote:

Not sure about that Nick. The stuff I have bought had been hydraulically
compressed into bales without any obvious voids and was very dense. It
expanded to about 3x the volume of loose bark chippings.

Compacted they are probably going to weight in at just under 1T /m^3.
Wood floats on water but depending on how wet they are not by very much.
Loose it could be anything as you say depending on the shapes.

Regards,
Martin Brown

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