[TowerTalk] Fwd: Concrete Bin Blocks for Guy Anchors

[Hans Hammarquist]

 You are going to trust a couple of #3,000 blocks to hold up your 150 feet tower? Sounds risky to me. I have a tapered 85 feet tower and I am using screw anchors for that. The pull-out force for them is #14,000 and that is not an "over-do". I am BTW using guy wires in four instead of the usual three directions (something that I highly recommend as the angle between the guy wires becomes less critical).
I don't know how easy it is to pull up a #3,000 concrete block compared to how much pull-up force you will see from the tower. 

Oh, BTW I would definitely not trust the steel/iron loop embedded in the block for any type of permanent support. You have no idea how much they are embedded unless you put them in yourself.

Please, do what the manufacturer recommends. That will save you some headache later.
Hans - N2JFS
 
 
-----Original Message-----
From: J D <donovanj at gmail.com>
To: towertalk at contesting.com <towertalk at contesting.com>
Sent: Wed, Dec 19, 2018 2:07 pm
Subject: Re: [TowerTalk] Concrete Bin Blocks for Guy Anchors

This is probably a good example of the guidance I've seen from several
professional tower guys. Do what the manufacturer says,

If they don't list bin blocks as an acceptable anchor, don't use them.

On Sat, Dec 15, 2018 at 2:08 PM Ro Grrr <RoGrrr at hotmail.com> wrote:
>
> I've been thinking about guy anchors for a tower I'll be putting up next spring. The tower will be 150 feet of Rohn 55 and it will require 3 triple guys.
> Instead of poured concrete for the guy anchors I've been thinking about using some of those Concrete Bin Blocks which are 2'x2'x4'. I'd bury them and attach the guy ends to the steel loops imbedded into the blocks.
> Does anyone have thoughts on them ?
>
> RoGrrr
> Roger
> KC8HZ
> Ohio
>
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