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If you wish to get cement it's better to buy it bagged. If you wish to make concrete using the ratio suggested there would be 64 sand to 80 of gravel.
well concrete mix is a 1/3 gravel , 1/3 sand and 1/3 portland cement . I hope this helps.
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This cannot be answered without knowing the width and depth.
Pumiscrete has been used in buildings for many years. It is concrete that uses crushed volcanic rock rather than conventional sand and gravel
It is 50 pounds
If using a square shovel usually about 10.
The answer is 35 lbs of gravel. 140=x+3x....where x is the lbs of gravel and 3x is the lbs of cement. Therefore 140=4x....140/4=35....so x=35
Round point about 270 Square point about 230
20
Concrete
Concrete
This all depends on the mix you want. I assume you mean cement when you mention the 80lb bag of concrete. I have pushed concrete in my day... Bag cement mix is the same as concrete. Don't be funny. How many 80 pound bags will make 1 yard of concrete? I want a definitive answer this time.
a yard of concrete can weigh from 2000 to 3500 lbs. The weight difference is because of the water, sand, and gravel mixture being different for different types of concrete.
4000PSI, 12bags, .5cum3sand 1cu.m3 gravel
Less than one.
1 cubic metre of dry concrete gravel weighs 2.4 tonnes Ernie Dibb Perth West Australia