#1  
Old 06-17-2009, 03:37 PM
Il Pizzaiolo
 
Join Date: Mar 2009
Location: USA
Posts: 1,436
Default ***94 lbs.***

can anyone tell me why Portland comes in a 94 lb. bag ? Why 94, not 100 not 80 Just curious if there is any special reason ?
Reply With Quote
  #2  
Old 06-17-2009, 05:11 PM
Les's Avatar
Les Les is offline
Il Pizzaiolo
 
Join Date: Sep 2005
Location: Carson City, NV
Posts: 2,851
Default Re: ***94 lbs.***

The info I found says that it is 1 cubic foot. Sounds like a reasonable number. Interesting question.

Les...
__________________
Check out my pictures here:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


If at first you don't succeed... Skydiving isn't for you.

Last edited by Les; 06-17-2009 at 06:54 PM.
Reply With Quote
  #3  
Old 06-17-2009, 06:43 PM
dmun's Avatar
Moderator
 
Join Date: Jul 2005
Location: New Jersey USA
Posts: 4,216
Default Re: ***94 lbs.***

I think it's the amount needed to produce a cubic foot of concrete, after the needed aggregates are added. It makes mason arithmetic easier.

It's the sort of thing that makes metric cheerleaders pull their hair out!
__________________
My geodesic oven project:
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
,
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #4  
Old 06-17-2009, 09:03 PM
Master Builder
 
Join Date: Mar 2008
Location: Washington State USA
Posts: 778
Default Re: ***94 lbs.***

I believe Les is correct, at least what he says agrees with what my concrete books say.

Concrete was/is mixed by volume rather than by weight thus it was easy to have recipes that could be easily duplicated. The simple 1-2-3 mix is a good example. That's one cement, two gravel and three sand. Having one cubic foot per bag made computation of mixing larger batches easy. I'm sure glad one cubic foot of cement doesn't weigh more!

Wiley
Reply With Quote
  #5  
Old 06-18-2009, 02:46 AM
Il Pizzaiolo
 
Join Date: Mar 2009
Location: USA
Posts: 1,436
Default Re: ***94 lbs.***

maybe they should cnsider making 1/2 a cubic foot. At least a 47lb. bag would be a little easier to carry. Thanks for all the info though, I figured there was a good reason, just thouht it was an odd weight...
Reply With Quote
  #6  
Old 06-18-2009, 04:01 AM
Apprentice
 
Join Date: Feb 2009
Location: Australia
Posts: 118
Arrow Re: ***94 lbs.***

Wiley,
I think you have your mix formula incorrect!
Over here we have 20kg bags of cement rather than the larger (pre metric) 94 lb bags and are a lot easier to handle.
Incidentally, 94 lb bags are 24 to the ton, or one pallete!
Our mixes as printed on every bag are:
Cement: sand: Aggregate or 20kg bags/ cubic metre
Structural cement 1 : 2 : 3 or 20 20kg bags/ cubic metre
Paving 1 : 2.5 : 3.5 or 16 20kg bags/ cubic metre
Render 1 : 4 : - or 24 20kg bags/ cubic metre
Mortar 1 : 6 : +1 lime or 12 20kg bags/ cubic metre

Rastys

Last edited by Rastys; 06-18-2009 at 04:03 AM.
Reply With Quote
  #7  
Old 06-18-2009, 09:54 AM
Master Builder
 
Join Date: Mar 2008
Location: Washington State USA
Posts: 778
Default Re: ***94 lbs.***

Good catch Rastys! I transposed the sand and gravel. I should have written: 1 cement, 2 sand and 3 gravel.

Bests,
Wiley


As a friend says:
"Learn to laugh at yourself and you will never lack for amusement." --MW
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 12:30 AM.

Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
2006/10 Forno Bravo, LLC