Hi
Just a quick question if anyone has the time to answer
How many 25kg bags of ballast/cement to mix 1 cubic metre of concrete?
Assuming a mix of 4:1 ballast:concrete
I'm laying a base for a greenhouse and need about 3 cubic metres of
concrete but I need to know how many bags of ballast/cement to order.
I would have ordered in ready-mix but its just too far away from the
drive to barrow/pump.
Many thanks in advance
-Iain

-----Signatures are for humans!!------

** Bite My Shiny Metal Ass to email **

"Bender" wrote in message
...
Hi
Just a quick question if anyone has the time to answer
How many 25kg bags of ballast/cement to mix 1 cubic metre of concrete?
Assuming a mix of 4:1 ballast:concrete
I'm laying a base for a greenhouse and need about 3 cubic metres of
concrete but I need to know how many bags of ballast/cement to order.
I would have ordered in ready-mix but its just too far away from the
drive to barrow/pump.
Many thanks in advance
-Iain


3 Cubic Metres?

THREE?

That is one hell of a lot of concrete. Me thinks you have something wrong
there.

Mike


--
www.rneba.org.uk for the latest pictures of the very first reunion and
Inaugural General Meeting. Nothing less than a fantastic success.
The Royal Naval Electrical Branch Association.
'THE' Association if you served in the Electrical Branch of the Royal Navy
www.rneba.org.uk to find your ex-Greenie mess mates
www.iowtours.com for all ex-Service Reunions. More being added regularly
"Navy Days" Portsmouth 25th - 27th July 2008. RN Shipmates will have a Stand

In article ,
"'Mike'" writes:
| "Bender" wrote in message
| ...
| Hi
| Just a quick question if anyone has the time to answer
| How many 25kg bags of ballast/cement to mix 1 cubic metre of concrete?
| Assuming a mix of 4:1 ballast:concrete
| I'm laying a base for a greenhouse and need about 3 cubic metres of
| concrete but I need to know how many bags of ballast/cement to order.
| I would have ordered in ready-mix but its just too far away from the
| drive to barrow/pump.
|
| 3 Cubic Metres?
|
| THREE?
|
| That is one hell of a lot of concrete. Me thinks you have something wrong
| there.

Made up out of 25 Kg bags of ballast, too :-) Either it is a commercial
sized greenhouse, of the sort that would fit neatly on top of my garden,
or it is a launch pad for the weapons of mass destruction that that nice
Mr Blair assured us are everywhere.

To answer Bender's question, ballast has a bulk specific density of
something like 1.5.


Regards,
Nick Maclaren.

"Nick Maclaren" wrote in message
...


...

or it is a launch pad for the weapons of mass destruction that that nice
Mr Blair assured us are everywhere.

He's not still doing that, is he?

Mary

On Tue, 11 Sep 2007 19:51:50 +0100, Mary Fisher wrote
(in article ):


"Nick Maclaren" wrote in message
...


...

or it is a launch pad for the weapons of mass destruction that that nice
Mr Blair assured us are everywhere.

He's not still doing that, is he?



I thought he *was* a weapon of mass destruction.



--
Sally in Shropshire, UK
Burne-Jones/William Morris window in Shropshire church with conservation
churchyard:
http://www.whitton-stmarys.org.uk

"Sally Thompson" wrote in message
al.net...
On Tue, 11 Sep 2007 19:51:50 +0100, Mary Fisher wrote
(in article ):


"Nick Maclaren" wrote in message
...


...

or it is a launch pad for the weapons of mass destruction that that nice
Mr Blair assured us are everywhere.

He's not still doing that, is he?



I thought he *was* a weapon of mass destruction.

Trouble is, where he is now he might still be :-(

Mary



--
Sally in Shropshire, UK
Burne-Jones/William Morris window in Shropshire church with conservation
churchyard:
http://www.whitton-stmarys.org.uk

"Sally Thompson" wrote in message
al.net...
On Tue, 11 Sep 2007 19:51:50 +0100, Mary Fisher wrote
(in article ):


"Nick Maclaren" wrote in message
...


...

or it is a launch pad for the weapons of mass destruction that that nice
Mr Blair assured us are everywhere.

He's not still doing that, is he?



I thought he *was* a weapon of mass destruction.


No that was Thatcher :-(((

Nearly did what Hitler failed to do

Thatcher and Blair!! What a destructive partnership! What would it be like
if they were to marry, OR be in the same Political Party??????

Mike


--
www.rneba.org.uk for the latest pictures of the very first reunion and
Inaugural General Meeting. Nothing less than a fantastic success.
The Royal Naval Electrical Branch Association.
'THE' Association if you served in the Electrical Branch of the Royal Navy
www.rneba.org.uk to find your ex-Greenie mess mates
www.iowtours.com for all ex-Service Reunions. More being added regularly
"Navy Days" Portsmouth 25th - 27th July 2008. RN Shipmates will have a Stand

"'Mike'" wrote in message
...

"Bender" wrote in message
...
Hi
Just a quick question if anyone has the time to answer
How many 25kg bags of ballast/cement to mix 1 cubic metre of concrete?
Assuming a mix of 4:1 ballast:concrete
I'm laying a base for a greenhouse and need about 3 cubic metres of
concrete but I need to know how many bags of ballast/cement to order.
I would have ordered in ready-mix but its just too far away from the
drive to barrow/pump.
Many thanks in advance
-Iain


3 Cubic Metres?

THREE?

That is one hell of a lot of concrete. Me thinks you have something wrong
there.

Google says the density of concrete is about 2400 kg/m3 so it looks he
needs 7200 Kg or 288 x 25 Kg bags! (Actually less than that if you allow for
the water. Either way I wouldn't want that in the back of my car :-)

Lets say his house is 4 x 3 M and 150mm thick = 1.8 cubic meters. .So 3
cubic does sound a lot.

In article ,
"CWatters" writes:
|
| Google says the density of concrete is about 2400 kg/m3 so it looks he
| needs 7200 Kg or 288 x 25 Kg bags! (Actually less than that if you allow for
| the water. Either way I wouldn't want that in the back of my car :-)

Google says many things that aren't so. A specific density of 2.4 is
a very dense concrete, of the sort used to make paving slabs - completely
overkill for a greenhouse base.

| Lets say his house is 4 x 3 M and 150mm thick = 1.8 cubic meters. .So 3
| cubic does sound a lot.

150 mm thick is also overkill.


Regards,
Nick Maclaren.

On Tue, 11 Sep 2007 18:52:10 +0100, "'Mike'"
wrote:


"Bender" wrote in message
.. .
Hi
Just a quick question if anyone has the time to answer
How many 25kg bags of ballast/cement to mix 1 cubic metre of concrete?
Assuming a mix of 4:1 ballast:concrete
I'm laying a base for a greenhouse and need about 3 cubic metres of
concrete but I need to know how many bags of ballast/cement to order.
I would have ordered in ready-mix but its just too far away from the
drive to barrow/pump.
Many thanks in advance
-Iain


3 Cubic Metres?

THREE?

That is one hell of a lot of concrete. Me thinks you have something wrong
there.

Mike

The greenhouse is going to sit on a 2' wall to protect from potential
flooding. This years rains put the bottom of my garden in 6 inch of
water.
-Iain

-----Signatures are for humans!!------

** Bite My Shiny Metal Ass to email **

"Bender" wrote in message
...
On Tue, 11 Sep 2007 18:52:10 +0100, "'Mike'"
wrote:


"Bender" wrote in message
. ..
Hi
Just a quick question if anyone has the time to answer
How many 25kg bags of ballast/cement to mix 1 cubic metre of concrete?
Assuming a mix of 4:1 ballast:concrete
I'm laying a base for a greenhouse and need about 3 cubic metres of
concrete but I need to know how many bags of ballast/cement to order.
I would have ordered in ready-mix but its just too far away from the
drive to barrow/pump.
Many thanks in advance
-Iain


3 Cubic Metres?

THREE?

That is one hell of a lot of concrete. Me thinks you have something wrong
there.

Mike

The greenhouse is going to sit on a 2' wall to protect from potential
flooding. This years rains put the bottom of my garden in 6 inch of
water.
-Iain

How do you get in without the water getting in?

Or are you going to allow the water to get in, but everything is going to be
on staging?

Mike


--
www.rneba.org.uk for the latest pictures of the very first reunion and
Inaugural General Meeting. Nothing less than a fantastic success.
The Royal Naval Electrical Branch Association.
'THE' Association if you served in the Electrical Branch of the Royal Navy
www.rneba.org.uk to find your ex-Greenie mess mates
www.iowtours.com for all ex-Service Reunions. More being added regularly
"Navy Days" Portsmouth 25th - 27th July 2008. RN Shipmates will have a Stand

On Tue, 11 Sep 2007 21:25:05 +0100, "'Mike'"
wrote:



"Bender" wrote in message
.. .
On Tue, 11 Sep 2007 18:52:10 +0100, "'Mike'"
wrote:


"Bender" wrote in message
...
Hi
Just a quick question if anyone has the time to answer
How many 25kg bags of ballast/cement to mix 1 cubic metre of concrete?
Assuming a mix of 4:1 ballast:concrete
I'm laying a base for a greenhouse and need about 3 cubic metres of
concrete but I need to know how many bags of ballast/cement to order.
I would have ordered in ready-mix but its just too far away from the
drive to barrow/pump.
Many thanks in advance
-Iain


3 Cubic Metres?

THREE?

That is one hell of a lot of concrete. Me thinks you have something wrong
there.

Mike

The greenhouse is going to sit on a 2' wall to protect from potential
flooding. This years rains put the bottom of my garden in 6 inch of
water.
-Iain

How do you get in without the water getting in?

Or are you going to allow the water to get in, but everything is going to be
on staging?

Mike
Maybe I wasnt clear in my post sorry
I will get in from the end that isn't wet.
Its the bottom of the garden that floods and the garden is on a
steep'ish slope, the greenhouse will stand on a level above the slope
rather than into it.
Hope This Helps
Iain

-----Signatures are for humans!!------

** Bite My Shiny Metal Ass to email **

"Bender" wrote in message
...
On Tue, 11 Sep 2007 21:25:05 +0100, "'Mike'"
wrote:



"Bender" wrote in message
. ..
On Tue, 11 Sep 2007 18:52:10 +0100, "'Mike'"
wrote:


"Bender" wrote in message
m...
Hi
Just a quick question if anyone has the time to answer
How many 25kg bags of ballast/cement to mix 1 cubic metre of concrete?
Assuming a mix of 4:1 ballast:concrete
I'm laying a base for a greenhouse and need about 3 cubic metres of
concrete but I need to know how many bags of ballast/cement to order.
I would have ordered in ready-mix but its just too far away from the
drive to barrow/pump.
Many thanks in advance
-Iain


3 Cubic Metres?

THREE?

That is one hell of a lot of concrete. Me thinks you have something
wrong
there.

Mike

The greenhouse is going to sit on a 2' wall to protect from potential
flooding. This years rains put the bottom of my garden in 6 inch of
water.
-Iain

How do you get in without the water getting in?

Or are you going to allow the water to get in, but everything is going to
be
on staging?

Mike
Maybe I wasnt clear in my post sorry
I will get in from the end that isn't wet.
Its the bottom of the garden that floods and the garden is on a
steep'ish slope, the greenhouse will stand on a level above the slope
rather than into it.
Hope This Helps
Iain


Thanks for the explanation Iain :-))

Having had a garden with quite a terrific slope, I can picture it:-)

In our case and I don't know if it is of any use to you, there was the
footings of a very old cottage which was on the flat at one end and which
had a drop of 'about' 8 feet at the other end. The previous people and
myself just put more rubble there and had a nice 'steepish' bank at the far
end. Certainly strong enough for a greenhouse on the flat. (We could have
had a big greenhouse there)!! It's a wonder that the present owners have not
tried to re build the cottage seeing as building is going on everywhere,
EXCEPT that it's in an AOB!!

Mike



--
www.rneba.org.uk for the latest pictures of the very first reunion and
Inaugural General Meeting. Nothing less than a fantastic success.
The Royal Naval Electrical Branch Association.
'THE' Association if you served in the Electrical Branch of the Royal Navy
www.rneba.org.uk to find your ex-Greenie mess mates
www.iowtours.com for all ex-Service Reunions. More being added regularly
"Navy Days" Portsmouth 25th - 27th July 2008. RN Shipmates will have a Stand

"Bender" wrote in message
...
On Tue, 11 Sep 2007 21:25:05 +0100, "'Mike'"
wrote:



"Bender" wrote in message
.. .
On Tue, 11 Sep 2007 18:52:10 +0100, "'Mike'"
wrote:


"Bender" wrote in message
...
THREE?

That is one hell of a lot of concrete. Me thinks you have something
wrong
there.

Mike

The greenhouse is going to sit on a 2' wall to protect from potential
flooding. This years rains put the bottom of my garden in 6 inch of
water.
-Iain

How do you get in without the water getting in?

Or are you going to allow the water to get in, but everything is going to
be
on staging?

Mike
Maybe I wasnt clear in my post sorry
I will get in from the end that isn't wet.
Its the bottom of the garden that floods and the garden is on a
steep'ish slope, the greenhouse will stand on a level above the slope
rather than into it.
Hope This Helps
Iain

In which case why not create a solid floor using concrete T beams sitting on
the walls? the floor is then made slotting in concrete blocks and skimming
over.
Unless you can get a ready mix lorry to the site 3 m3 is a lot of mixing!

--
Charlie, Gardening in Cornwall
http://www.roselandhouse.co.uk
Holders of National collections of Clematis viticella
and Lapageria rosea cultivars

"Bender" wrote in message
...
The greenhouse is going to sit on a 2' wall to protect from potential
flooding. This years rains put the bottom of my garden in 6 inch of
water.

Perhaps a beam and block floor would be easier than filling the inside with
hardcore and concrete.