How much gravel under concrete?

[vtsnowedin]

The only thing I THINK I understand is the unit of measure... he is talking about 3650 lbs per square inch.

3650 Psi = 25165864.1085 Pascals or about the 25M Pa he posted about.

Ayah I know, I was just being lazy and didn't have the conversion in my head. Might be a robo post or a gag. He might use grouting as a term for mixing up concrete with his gravel and if he needs 3650 psi he needs to order it from a plant using washed sand and stone. In the old days that was an eight bag mix but today with modern water reducers and fly ash added to the mix they can do 3650 with five bags of cement to the yard.

 

[k0ua]

Ayah I know, I was just being lazy and didn't have the conversion in my head. Might be a robo post or a gag. He might use grouting as a term for mixing up concrete with his gravel and if he needs 3650 psi he needs to order it from a plant using washed sand and stone. In the old days that was an eight bag mix but today with modern water reducers and fly ash added to the mix they can do 3650 with five bags of cement to the yard.

well I am guessing that English might not be the posters native language.. as in the location of Toledo, might not be Toledo Ohio, but Toledo Spain. Just guessing.