[prapoza]

Hi Guys,

We mix Portland type II with 30 shovels of sand/bag. Does anyone know how many bags including sand make a cubic yard?

BTW- we have found that a bag including sand does 20 lineal feet of belgian block driveway edging in a footing.

Thanks!
________
Paul

[agla]

I'm pretty sure that an 80 lb. bag is equal to 2/3 of a cubic foot. Out west a strong mix of concrete is something they call "5 sack" which has 5 sacks of portland in a cubic yard. That is at least how I remember it. That seems like about a 1:9 ratio.

Of course you don't have big aggregate in your sand mix which would mean you have more surface area for the cement to coat on the same volume of sand.

Not much help, I guess.