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digging a small trench foundation by hand?

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RobertL

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May 23, 2011, 6:34:21 AM5/23/11
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Can anyone give me idea how long it would take a healthy man to dig a
trench foundation 5m long by 450mm wide, 1000m m deep?

I'm trrying to decide if it's worth hiring a digger for the job.

thanks,

Robert


RobertL

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May 23, 2011, 6:34:57 AM5/23/11
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using a spade of course... not literally by hand.

R

The Natural Philosopher

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May 23, 2011, 7:00:13 AM5/23/11
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RobertL wrote:
> Can anyone give me idea how long it would take a healthy man to dig a
> trench foundation 5m long by 450mm wide, 1000m m deep?
>

a fit labourer..probably a day or so.

Me? about three one of each in any given week, and teh rest spent flat
on my back gasping.

> I'm trrying to decide if it's worth hiring a digger for the job.
>

Its worth it.
Just about possible with a mini digger though a 3.5 tonner would be ideal.

> thanks,
>
> Robert
>
>

John Rumm

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May 23, 2011, 7:04:08 AM5/23/11
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So much depends on the state of the ground and local soil conditions. If
its a relatively easy dig then its doable in a day to a day and a half.
If on the other hand its hard going, then significantly longer. It also
depends on what you are going to do with the spoil. Assuming you just
log it beside the trench while you dig, you are going to have anything
up to three and a half cubic metres (allowing for some "bulking up") to
shift after.

A mini digger ought to do it in a day without any difficulty.

--
Cheers,

John.

/=================================================================\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\=================================================================/

Ian Jackson

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May 23, 2011, 8:36:22 AM5/23/11
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In message <etqdnV5Ov--yokfQ...@brightview.co.uk>, John
Rumm <see.my.s...@nowhere.null> writes

>On 23/05/2011 11:34, RobertL wrote:
>>
>> Can anyone give me idea how long it would take a healthy man to dig a
>> trench foundation 5m long by 450mm wide, 1000m m deep?
>>
>> I'm trrying to decide if it's worth hiring a digger for the job.
>
>So much depends on the state of the ground and local soil conditions.
>If its a relatively easy dig then its doable in a day to a day and a
>half. If on the other hand its hard going, then significantly longer.
>It also depends on what you are going to do with the spoil. Assuming
>you just log it beside the trench while you dig, you are going to have
>anything up to three and a half cubic metres (allowing for some
>"bulking up") to shift after.
>
>A mini digger ought to do it in a day without any difficulty.
>
If the ground is difficult, a compromise might be to hire an electric
'pneumatic' drill to do the really hard work.
--
Ian

TheScullster

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May 23, 2011, 8:37:42 AM5/23/11
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"RobertL" <rober...@yahoo.com> wrote in message
news:3c3ab2ce-28b0-4ad9...@x3g2000yqj.googlegroups.com...
Personally (with no experience of this whatsoever) it would seem quite a
tricky job to dig a narrow trench quite that deep.
You'll certainly need a back that's in better shape than mine!

Phil


Nightjar

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May 23, 2011, 8:46:29 AM5/23/11
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On 23/05/2011 11:34, RobertL wrote:
>

My Home Guard Manual tells me that two men can dig a 6 ft long fire
trench to the first stage (3 ft deep, 3'6" wide at the top and 2' wide
at the bottom) in four hours. For a fire trench, the waste soil is used
to make a parapet, so removing it would add to the time.

I suspect that 450mm wide might be a bit narrow to work in easily and 1m
is deep enough to run the risk of being trapped by a trench collapse, so
I would go for the digger anyway.

Colin Bignell

Paul - xxx

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May 23, 2011, 8:48:53 AM5/23/11
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RobertL wrote:

Having recently seen similar being dug up at my school (I'm school
caretaker/site supervisor) I'd suggest getting a man in or a digger!

We had a 15m long x 450 x 450 trench for some electrical 'stuff' dug
and where the ground is soil it's relatively easy, where it's not, it's
not! Took them about a day with a skid-steer mini-digger and two
blokes with shovels ... the shovels were more to lean on than anything
else .. ;)

--
Paul - xxx

Andy Dingley

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May 23, 2011, 8:49:02 AM5/23/11
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On May 23, 11:34 am, RobertL <robertml...@yahoo.com> wrote:
> Can anyone give me idea how long it would take a healthy man to dig a
> trench foundation 5m long by 450mm wide, 1000m m deep?

Round here I could easily do it in a day. Back in Bristol (heavy clay)
it would have taken me two, in Northern Ireland (unimproved heavy clay
with boulders in) it would have been three. In Ireland I couldn't dig
a trench this narrow - I'd hit so many boulders that I'd be forever
widening it to get them lifted out.


> I'm trrying to decide if it's worth hiring a digger for the job.

If you can afford it and you have easy access, why not enjoy yourself?
8-)

Steve Firth

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May 23, 2011, 9:00:07 AM5/23/11
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I have, in the past, done the work in clay soil, in a rainstorm, using a
long-handled shovel. I had an incentive, a barn was flooding and needed an
emergency drain. The long handled shovel really helps. British spades are
useless in comparison. But it was a long hard day and I don't want to do it
again, ever.

Steve Firth

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May 23, 2011, 9:00:07 AM5/23/11
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I have just finished digging a trench of the same section, for drainage,
using a 0.75 tonne micro digger. The digger cost less than £3k to buy. The
quote from a contractor for the work was £6k. Hiring a digger should
certainly be worth it, but buying one made sense for me, because I have
about 12 months more digging to do.

The length of the drain is 60 metres and the job took one (long) day. The
subsoil is boulder clay, so about as heavy going as one can get.

mike

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May 23, 2011, 9:06:56 AM5/23/11
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On May 23, 11:34 am, RobertL <robertml...@yahoo.com> wrote:

I ran your question through Google Translate and this is what it came
up with:

God, I'm so excited. I have the perfect opportunity to hire a
minidigger but the wife is giving me shit about the cost. I just need
to give myself deniability and make it look like I've done the
research. Please tell me if I do the job by hand I'll likely slip a
disk 'cause there's a JCB with my name on it.

Nick Leverton

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May 23, 2011, 9:07:55 AM5/23/11
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In article <3c3ab2ce-28b0-4ad9...@x3g2000yqj.googlegroups.com>,

RobertL <rober...@yahoo.com> wrote:
>
>Can anyone give me idea how long it would take a healthy man to dig a
>trench foundation 5m long by 450mm wide, 1000m m deep?

This should be a good test for all the posters discussing maths exams :)

Nick
--
Serendipity: http://www.leverton.org/blosxom (last update 29th March 2010)
"The Internet, a sort of ersatz counterfeit of real life"
-- Janet Street-Porter, BBC2, 19th March 1996

ARWadsworth

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May 23, 2011, 9:14:01 AM5/23/11
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It is tricky. My new water supply was at least 750mm deep but only 1 spade
wide.

The lad that dug it for me did a very good job:-)

--
Adam


Andy Dingley

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May 23, 2011, 9:35:35 AM5/23/11
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On May 23, 1:46 pm, "Nightjar <\"cpb\"@" <"insertmysurnamehere> wrote:

> My Home Guard Manual tells me that two men can dig a 6 ft long fire
> trench to the first stage (3 ft deep, 3'6" wide at the top and 2' wide
> at the bottom) in four hours. For a fire trench, the waste soil is used
> to make a parapet, so removing it would add to the time.

I have several similar manuals of field engineering. The rates for
digging are so optimistic that I can only assume they're the rates for
troops sandwiched between the Beastly Hun ahead and a barking RSM
behind.

Nightjar

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May 23, 2011, 10:05:37 AM5/23/11
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I suspect the figures mostly come from the Great War, so that is
probably not far off the mark.

Colin Bignell

RobertL

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May 23, 2011, 11:01:22 AM5/23/11
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Thank you all for your help. My father-in-law (who is visiting us
from transilvania) wants to help us with our extension and he assures
us, from his experience digging graves, that he can do it in a couple
of days.


Robert


The Natural Philosopher

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May 23, 2011, 11:11:27 AM5/23/11
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Its not that dificult, but its bloody hard work!

The sort of work almost no one understands, these days.

(having spent 4 hours yesterday trying and eventually succeeding, in
making 3 400mm deep holes in sun baked clay for some posts to go into,
teaspoon by teaspoon, literally. Took 5 hours).

The Natural Philosopher

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May 23, 2011, 11:14:05 AM5/23/11
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An Irish Navvy could dig and wheel barrow 30 tonnes in a (proper guiness
fuelled) day.


Thes re figures from the days when unskilled labour didn't mean lying on
your back, having a pethidine injection and a Caesarian..

Tim Downie

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May 23, 2011, 11:17:42 AM5/23/11
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Not got something like this?
http://www.screwfix.com/p/roughneck-fibreglass-post-hole-digger/35835

Brilliant tool.

Tim

The Natural Philosopher

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May 23, 2011, 11:26:43 AM5/23/11
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Into sun baked clay? I think not.

I've got two more holes to go today. Not worth geting a better tool.

Steve Firth

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May 23, 2011, 11:27:38 AM5/23/11
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RobertL <rober...@yahoo.com> wrote:

[snip]


> Thank you all for your help. My father-in-law (who is visiting us
> from transilvania) wants to help us with our extension and he assures
> us, from his experience digging graves, that he can do it in a couple
> of days.

Is his name Igor?

Do you really need foundations below your bridge?

Tim Watts

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May 23, 2011, 11:29:30 AM5/23/11
to
RobertL wrote:


>
> Thank you all for your help. My father-in-law (who is visiting us
> from transilvania) wants to help us with our extension and he assures
> us, from his experience digging graves, that he can do it in a couple
> of days.

Garlic's on special offer at Waitrose right now...

--
Tim Watts

GB

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May 23, 2011, 12:00:09 PM5/23/11
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>>> (having spent 4 hours yesterday trying and eventually succeeding, in
>>> making 3 400mm deep holes in sun baked clay for some posts to go
>>> into, teaspoon by teaspoon, literally. Took 5 hours).
>>
>> Not got something like this?
>> http://www.screwfix.com/p/roughneck-fibreglass-post-hole-digger/35835
>>
>> Brilliant tool.
>>
>> Tim
>
> Into sun baked clay? I think not.
>
> I've got two more holes to go today. Not worth geting a better tool.

pick-axe?


--
Murphy's ultimate law is that if something that could go wrong doesn't,
it turns out that it would have been better if it had gone wrong.


Ian Jackson

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May 23, 2011, 12:50:48 PM5/23/11
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In message <4dda848d$0$2520$db0f...@news.zen.co.uk>, GB
<NOTso...@microsoft.com> writes

>>>> (having spent 4 hours yesterday trying and eventually succeeding, in
>>>> making 3 400mm deep holes in sun baked clay for some posts to go
>>>> into, teaspoon by teaspoon, literally. Took 5 hours).
>>>
>>> Not got something like this?
>>> http://www.screwfix.com/p/roughneck-fibreglass-post-hole-digger/35835
>>>
>>> Brilliant tool.
>>>
>>> Tim
>>
>> Into sun baked clay? I think not.
>>
>> I've got two more holes to go today. Not worth geting a better tool.
>
>pick-axe?
>
http://www.hss.com/g/2151/Vibration-Damped-Breaker-110v.html
I used one to dig a soakaway (appx 1m square 2m deep) into ground that
was probably 65% clay soil and 35% flints. I did it in stages, over the
weekend.
--
Ian

jgharston

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May 23, 2011, 12:55:34 PM5/23/11
to
GB wrote:
> > I've got two more holes to go today. Not worth geting a better tool.
> pick-axe?

Mattock. Otherwise known as a digging axe or a chinese spade.
Works wonders for trenches.

JGH

John Rumm

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May 23, 2011, 1:16:05 PM5/23/11
to
On 23/05/2011 14:00, Steve Firth wrote:
> The Natural Philosopher<t...@invalid.invalid> wrote:
>> RobertL wrote:
>>> Can anyone give me idea how long it would take a healthy man to dig a
>>> trench foundation 5m long by 450mm wide, 1000m m deep?
>>>
>> a fit labourer..probably a day or so.
>>
>> Me? about three one of each in any given week, and teh rest spent flat on my back gasping.
>>
>>> I'm trrying to decide if it's worth hiring a digger for the job.
>>>
>> Its worth it.
>> Just about possible with a mini digger though a 3.5 tonner would be ideal.
>
> I have just finished digging a trench of the same section, for drainage,
> using a 0.75 tonne micro digger. The digger cost less than £3k to buy. The
> quote from a contractor for the work was £6k. Hiring a digger should
> certainly be worth it, but buying one made sense for me, because I have
> about 12 months more digging to do.

The little 850kg Yanmar "scoppy" machines can do a fair amount of work.
IIRC they were about £60 for the day plus delivery (at £15) round here.
Good if you have restricted access - they fold up small enough to drive
through a door.

> The length of the drain is 60 metres and the job took one (long) day. The
> subsoil is boulder clay, so about as heavy going as one can get.

Heavy clay here...

John Rumm

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May 23, 2011, 1:17:56 PM5/23/11
to
On 23/05/2011 17:00, GB wrote:
>>>> (having spent 4 hours yesterday trying and eventually succeeding, in
>>>> making 3 400mm deep holes in sun baked clay for some posts to go
>>>> into, teaspoon by teaspoon, literally. Took 5 hours).
>>>
>>> Not got something like this?
>>> http://www.screwfix.com/p/roughneck-fibreglass-post-hole-digger/35835
>>>
>>> Brilliant tool.
>>>
>>> Tim
>>
>> Into sun baked clay? I think not.
>>
>> I've got two more holes to go today. Not worth geting a better tool.
>
> pick-axe?

I find a grubbing mattock a much better digging tool than a pick-axe...

Message has been deleted

The Natural Philosopher

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May 23, 2011, 1:31:03 PM5/23/11
to
GB wrote:
>>>> (having spent 4 hours yesterday trying and eventually succeeding, in
>>>> making 3 400mm deep holes in sun baked clay for some posts to go
>>>> into, teaspoon by teaspoon, literally. Took 5 hours).
>>> Not got something like this?
>>> http://www.screwfix.com/p/roughneck-fibreglass-post-hole-digger/35835
>>>
>>> Brilliant tool.
>>>
>>> Tim
>> Into sun baked clay? I think not.
>>
>> I've got two more holes to go today. Not worth geting a better tool.
>
> pick-axe?
>
>
Useless. won't go deep and narrow. Except in a trench. These are HOLES.


>
>

The Natural Philosopher

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May 23, 2011, 1:31:43 PM5/23/11
to

Got one. We are not digging a trench though.


> JGH

Steve Firth

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May 23, 2011, 3:33:19 PM5/23/11
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The Natural Philosopher <t...@invalid.invalid> wrote:

I recommend these - I've had bloody hundreds of posts to set and one of
these has been essential.

Nightjar

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May 23, 2011, 3:36:30 PM5/23/11
to
On 23/05/2011 16:01, RobertL wrote:
...

> Thank you all for your help. My father-in-law (who is visiting us
> from transilvania) wants to help us with our extension and he assures
> us, from his experience digging graves, that he can do it in a couple
> of days.

Birthplace: Frankenstein on my partner's passport often gets a comment
from UK Border Control.

Colin Bignell

Mark

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May 24, 2011, 4:57:37 AM5/24/11
to
On 23 May 2011 17:21:52 GMT, Huge <Hu...@nowhere.much.invalid> wrote:

>On 2011-05-23, John Rumm <see.my.s...@nowhere.null> wrote:
>> On 23/05/2011 17:00, GB wrote:
>>>>>> (having spent 4 hours yesterday trying and eventually succeeding, in
>>>>>> making 3 400mm deep holes in sun baked clay for some posts to go
>>>>>> into, teaspoon by teaspoon, literally. Took 5 hours).
>>>>>
>>>>> Not got something like this?
>>>>> http://www.screwfix.com/p/roughneck-fibreglass-post-hole-digger/35835
>>>>>
>>>>> Brilliant tool.
>>>>>
>>>>> Tim
>>>>
>>>> Into sun baked clay? I think not.
>>>>
>>>> I've got two more holes to go today. Not worth geting a better tool.
>>>
>>> pick-axe?
>>
>> I find a grubbing mattock a much better digging tool than a pick-axe...
>

>What he said.

And a trenching shovel to remove the soil.
--
(\__/) M.
(='.'=) Due to the amount of spam posted via googlegroups and
(")_(") their inaction to the problem. I am blocking some articles
posted from there. If you wish your postings to be seen by
everyone you will need use a different method of posting.

Tim Downie

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May 24, 2011, 6:07:16 AM5/24/11
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"The Natural Philosopher" <t...@invalid.invalid> wrote in message news:irdubj$3os$3...@news.albasani.net...

The weight of the blades coupled with a hefty downwards plunge make it a formidable digging tool. I've used mine to take out a lot of trees as it'll even cut through smaller tree roots.

Seriously, don't diss it until you've tried one.

Tim

dennis@home

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May 24, 2011, 8:00:33 AM5/24/11
to

"Tim Downie" <timdow...@yahoo.co.uk> wrote in message
news:irg00i$12m$1...@dont-email.me...


>
> "The Natural Philosopher" <t...@invalid.invalid> wrote in message
> news:irdubj$3os$3...@news.albasani.net...


8<


>> Into sun baked clay? I think not.

Easy.

>>
>> I've got two more holes to go today. Not worth geting a better tool.
>>
>
> The weight of the blades coupled with a hefty downwards plunge make it a
> formidable digging tool. I've used mine to take out a lot of trees as
> it'll even cut through smaller tree roots.

I have a cheaper wooden handled version suitable for posts about 6" square.
It will break house bricks and stuff like that if you let it.
It does blunt the edge though so I use a 1m SDS drill to break them if I
notice them.

>
> Seriously, don't diss it until you've tried one.

I have seen telephone poles put in using similar tools.

Martin Bonner

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May 24, 2011, 9:17:10 AM5/24/11
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On May 23, 4:17 pm, "Tim Downie" <timdownie2...@yahoo.co.uk> wrote:
> The Natural Philosopher wrote:
>
> > (having spent 4 hours yesterday trying and eventually succeeding, in
> > making 3 400mm deep holes in sun baked clay for some posts to go into,
> > teaspoon by teaspoon, literally. Took 5 hours).
>
> Not got something like this?http://www.screwfix.com/p/roughneck-fibreglass-post-hole-digger/35835
>
> Brilliant tool.

I have a much better post-hole borer than that, but I've never seen
another one like it. It's basically an open-ended cylinder of metal
about six inches diameter, and four inches high. There are then teeth
projecting down and in from the bottom of the cylinder, and flaps at
the bottom of the cylinder are bent slightly out (so that the hole is
wider than the cylinder.

The whole lot is fastened to a stem with a large cross bar, and you
can dig post-holes /amazingly/ fast with it. (Doesn't cope so well
with very sandy soil).

I'd use a pick-axe to get through the first few inches of sun-baked
clay though.

RobertL

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May 24, 2011, 10:05:14 AM5/24/11
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On May 23, 4:27 pm, Steve Firth <%ste...@malloc.co.uk> wrote:


He's nearly finished apparently, in less than a day. He's 70 years
old! They are a tough lot out there.

I'm not a troll, I really am married to a woman from transilvania and
her parents are here visiting us. FIL doesn't like sitting about - he
likes to get out in the air and build something.

Robert

GB

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May 24, 2011, 11:54:10 AM5/24/11
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RobertL wrote:
>
> He's nearly finished apparently, in less than a day.

You mean night?

RobertL

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May 24, 2011, 12:12:08 PM5/24/11
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:-)

R

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