How many bags of Portland Cement for a CU Yard?
 

How many bags of Portland Cement for a CU Yard?
They are 90lb bags. From what I recall, it was 3 bags per cu yard.
Yet I got this guy at the local lumberyard who insists I need 5 bags
per... Sounds to me he is trying to make more money...

I am referring to a standard mix of 1 part portland, 2 parts sand and
3 parts stone.

It's been awhile since I made cement so I am asking to be sure. I'm
checking into the cost to make my own from scratch rather than truck
in some ready mixed stuff in a tub.

How many bags of Portland Cement for a CU Yard?
 

3


wrote:
How many bags of Portland Cement for a CU Yard?

How many bags of Portland Cement for a CU Yard?
 

I don't think so.


"The Freon Cowboy" wrote in message
m...
3


wrote:
How many bags of Portland Cement for a CU Yard?

How many bags of Portland Cement for a CU Yard?
 

In article ,
"Bob F" wrote:

I don't think so.


"The Freon Cowboy" wrote in message
m...
3


wrote:
How many bags of Portland Cement for a CU Yard?


I don't think so either.
It will depend on the size of the aggregate; see:
http://www.cement.org/tech/faq_cement.asp

--
Grandpa
Killing all posts from Google Groups
The Usenet Improvement Project:
http://improve-usenet.org/

How many bags of Portland Cement for a CU Yard?
 

How many bags of Portland Cement for a CU Yard?
 

In article , wrote:
How many bags of Portland Cement for a CU Yard?
They are 90lb bags. From what I recall, it was 3 bags per cu yard.
Yet I got this guy at the local lumberyard who insists I need 5 bags
per... Sounds to me he is trying to make more money...

I am referring to a standard mix of 1 part portland, 2 parts sand and
3 parts stone.

Premix aggregate yields 2/3 cubic FOOT of concrete per 90# bag.
That's 27 / (2/3) = 40.5 bags of aggregate per cubic yard.

So if you're making your own mix, with the cement being 1 part in 6, you'd
need 40.5 / 6 = just under 7 bags.

--
Regards,
Doug Miller (alphageek at milmac dot com)

It's time to throw all their damned tea in the harbor again.

How many bags of Portland Cement for a CU Yard?
 

On Tue, 06 Nov 2007 15:08:46 -0600, wrote:

How many bags of Portland Cement for a CU Yard?
They are 90lb bags. From what I recall, it was 3 bags per cu yard.
Yet I got this guy at the local lumberyard who insists I need 5 bags
per... Sounds to me he is trying to make more money...

Buy five and take two back; or one.

--
Oren

I have not failed. I've just found 10,000 ways that won't work. Thomas A. Edison

How many bags of Portland Cement for a CU Yard?
 

"Grandpa" wrote in message
news:PN5Yi.10359$9N6.9@trnddc03...


I don't think so either.
It will depend on the size of the aggregate; see:
http://www.cement.org/tech/faq_cement.asp


Looks like they are saying 7 bags. That should be about right. I mixed up
a yard of the ready mix and it took about 43 bags. The measurment was not
exect but close to a yard. From the above mix , if you say it takes 42 bags
and devide by 6 (number of parts) that gives you seven .

Be sure you want to devote the ammount of time to mix up the cement. It
will take several hours to mix up that much by hand. Unless a big mixer is
used, think of it as about 3 minuits per the bag of premixed that I used.
That times about 40 will give you the time it will take.
It may take longer if done fully by hand. I used a small electric mixer and
only mixed one bag at a time.

How many bags of Portland Cement for a CU Yard?
 

Joseph Meehan wrote:
Note: cement and concrete are not the same thing at all.

Concrete comes in different size bags. Concrete is formulated to
different specifications and strengths.
....

It would be the cement that comes in the bags...

--

How many bags of Portland Cement for a CU Yard?
 

On Nov 7, 9:19 am, dpb wrote:
Joseph Meehan wrote:
Note: cement and concrete are not the same thing at all.

Concrete comes in different size bags. Concrete is formulated to
different specifications and strengths.

...

It would be the cement that comes in the bags...

--

Errm..you can also buy premix (dry) concrete in the bag.

Harry K

How many bags of Portland Cement for a CU Yard?
 

Gfretwell gave you the correct answer.

When ordering or specifying concrete today, it is done by
requesting a PSI strength depending on how the concrete is to be
used. 2500# for residential footings, minimum; most commercial
work is speced at 3500#; tilt up and prestress run 4500-6000#.
Each excess gallon on water per yard above the design water/cement
ratio reduces the strength by 500#, so you will often see
references to not using too much water.

The very old method of ordering, mixing, or thinking about
concrete as xxx number of sacks per yard is not used anymore, but
most concrete people (at least we old ones) do understand the
terminology.

It kinda ends up knowing what you are doing with the concrete, the
stresses to which it will be exposed, your expectations for the
finish product, etc. 3 sack will set up, get hard, and will
crack. 6 sack will set up, get hard, and will crack. The six
sack can take a great deal more load before crushing.

Your call. There is an excellent explanation with facts and
figures he http://www.wikihow.com/Make-Concrete

--
______________________________
Keep the whole world singing . . . .
DanG (remove the sevens)




wrote in message
...
How many bags of Portland Cement for a CU Yard?
They are 90lb bags. From what I recall, it was 3 bags per cu
yard.
Yet I got this guy at the local lumberyard who insists I need 5
bags
per... Sounds to me he is trying to make more money...

I am referring to a standard mix of 1 part portland, 2 parts
sand and
3 parts stone.

It's been awhile since I made cement so I am asking to be sure.
I'm
checking into the cost to make my own from scratch rather than
truck
in some ready mixed stuff in a tub.

How many bags of Portland Cement for a CU Yard?
 

On Wed, 7 Nov 2007 19:21:08 -0600, "DanG" wrote:

Gfretwell gave you the correct answer.

When ordering or specifying concrete today, it is done by
requesting a PSI strength depending on how the concrete is to be
used. 2500# for residential footings, minimum; most commercial
work is speced at 3500#; tilt up and prestress run 4500-6000#.
Each excess gallon on water per yard above the design water/cement
ratio reduces the strength by 500#, so you will often see
references to not using too much water.

The very old method of ordering, mixing, or thinking about
concrete as xxx number of sacks per yard is not used anymore, but
most concrete people (at least we old ones) do understand the
terminology.

It kinda ends up knowing what you are doing with the concrete, the
stresses to which it will be exposed, your expectations for the
finish product, etc. 3 sack will set up, get hard, and will
crack. 6 sack will set up, get hard, and will crack. The six
sack can take a great deal more load before crushing.

Your call. There is an excellent explanation with facts and
figures he http://www.wikihow.com/Make-Concrete

For a simple feedshed floor, I only need the minimum. It's only for
me to walk on. On the other hand, I always make my concrete more
durable than that sack-crete. That stuff always seems weak and
inferior. (not enough portland in it).

How many bags of Portland Cement for a CU Yard?
 

On Nov 7, 6:29 pm, wrote:
On Wed, 7 Nov 2007 19:21:08 -0600, "DanG" wrote:
Gfretwell gave you the correct answer.

When ordering or specifying concrete today, it is done by
requesting a PSI strength depending on how the concrete is to be
used. 2500# for residential footings, minimum; most commercial
work is speced at 3500#; tilt up and prestress run 4500-6000#.
Each excess gallon on water per yard above the design water/cement
ratio reduces the strength by 500#, so you will often see
references to not using too much water.

The very old method of ordering, mixing, or thinking about
concrete as xxx number of sacks per yard is not used anymore, but
most concrete people (at least we old ones) do understand the
terminology.

It kinda ends up knowing what you are doing with the concrete, the
stresses to which it will be exposed, your expectations for the
finish product, etc. 3 sack will set up, get hard, and will
crack. 6 sack will set up, get hard, and will crack. The six
sack can take a great deal more load before crushing.

Your call. There is an excellent explanation with facts and
figures hehttp://www.wikihow.com/Make-Concrete

For a simple feedshed floor, I only need the minimum. It's only for
me to walk on. On the other hand, I always make my concrete more
durable than that sack-crete. That stuff always seems weak and
inferior. (not enough portland in it).- Hide quoted text -

- Show quoted text -

Yep, I buy the sack-crete and add 1 bag of portland. Add about a
coffee can of portland per bag when mixing. Excess is kept in one of
the ubiquitous white buckets with the sealing top. Seems to keep for
years that way.

Harry K

How many bags of Portland Cement for a CU Yard?
 

replying to alvinamorey, Gusq805 wrote:
3 bags will not give u the minimum psi on 1 yard think obout 500psi per ea
90lb bag of Portlan so if you need a yard of grout a minimum psi recommended
is 2000psi there for u need 4 bags per yard if you need a 2500psi mix up will
need 5 bags

--
for full context, visit https://www.homeownershub.com/mainte...rd-264366-.htm

How many bags of Portland Cement for a CU Yard?
 

replying to alvinamorey, Dr. Phill wrote:
1 bag portland cement make 4.5 cubic feet of concrete at the 1:2:3 ratio.
1cyd=27cft You do the math

Dr. Phill

--
for full context, visit https://www.homeownershub.com/mainte...rd-264366-.htm