Call a truck, it should be cheaper, and you would get a monolithic pour
which is much stronger.
1 part cement
2 parts sand
3 parts gravel
and the most important part for strength is as little water as possible so
you have a mix and not soup.
----- Original Message -----
From: "Ed Swiderski, KU4BP" <firstname.lastname@example.org>
To: "Tower Talk" <email@example.com>
Sent: Thursday, March 11, 2010 4:57 PM
Subject: [TowerTalk] Mixing concrete for a base
> I'm considering mixing my own concrete for my installation. Been trying to
> get a grasp on how much cement, gravel and sand to get. My proposed base
> for 70ft of 25G. Total, with the anchors, is 2.2 cu yds. Call it 2.5 since
> plan to "bell" the base.
> I was pricing the ingredients today but got a little confused on the
> of each needed. I looked at 94 lb bags of cement and 50 lb bags for both
> sand and gravel. The problem I had was determining how much in cu yds a
> would cover. I have seen that a 50 lb bag of sand covers .5 cu yd.
> So what I'm looking for is a formula of some sort so I can figure out how
> much I will need of each. I've heard of the "1-2-3 rule" but not 100% sure
> I'm using it correctly.
> Ed KU4BP
> TowerTalk mailing list
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