what is the ration and proportion of sand and gravel for one bag of sand? how many feet it will cover?

I want to know...for constructing a house flooring...in one bag of cement what is the ratio and proportion of sand and gravels? and how many feet will it cover for that mixture for the floor?

Re-design8 years ago
Are you getting 60# or 80# bags?
plumber_bob8 years ago
Here are some links to help you, and it may give you some other ideas/things to think about, The first link is from the Portland Cement Association.

http://www.cement.org/basics/concretebasics_concretebasics.asp
http://matse1.mse.uiuc.edu/concrete/bm.html
http://www.wisegeek.com/what-should-i-know-about-mixing-concrete.htm

I hope this helps.

pb