Using a concrete calculator and FB's book I'm going to pour a 86" x 73" x 5.5" slab or .74 of a yard. I'm trying to do it the most cost efficient (cheapest LOL) way possible. I don't understand a couple things with concrete. I know I need "Portland cement." What I think my options are, either:

A: Buy bags of Portland cement, sand, and gravel and mix it myself.

B: Buy bags of premixed concrete, and mix them myself.

C: Hire a concrete company to deliver mixed concrete.

My 2 big questions are :

Do options A & B provide roughly the same product just different cost and ease?

AND

I'm told option A will be the cheapest. I have access to a mixer from a friend. But, I can't figure out how much of each item I will need! For .74 yards how many bags of cement, how much sand, and how much gravel? Can someone give me some ideas? I think I've been reading WAY TOO MUCH! lol

Thanks! -John

A: Buy bags of Portland cement, sand, and gravel and mix it myself.

B: Buy bags of premixed concrete, and mix them myself.

C: Hire a concrete company to deliver mixed concrete.

My 2 big questions are :

Do options A & B provide roughly the same product just different cost and ease?

AND

I'm told option A will be the cheapest. I have access to a mixer from a friend. But, I can't figure out how much of each item I will need! For .74 yards how many bags of cement, how much sand, and how much gravel? Can someone give me some ideas? I think I've been reading WAY TOO MUCH! lol

Thanks! -John

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