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Re: [TowerTalk] Anchor bolts for LM470

Subject: Re: [TowerTalk] Anchor bolts for LM470
From: Jim Lux <>
Date: Sun, 15 Apr 2012 10:20:18 -0700
List-post: <">>
On 4/15/12 9:51 AM, Rick Stealey wrote:
> If the concrete is 7 -8 feet deep, why is the bolt only about 2 feet long?  I 
> always wondered about that, and yes, it's true, I had a very hard time with 
> Statics in college.
Presumably there's rebar in that concrete.  The bolt is there to attach 
the tower to the concrete, not to hold the concrete together.  If you 
had some magic epoxy that you could glue the base to the concrete with, 
then you could use that, and NO bolts.

Practically speaking, the bolt is long enough that the "pullout" force 
is high enough (e.g. greater than the strength of the bolt)

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