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Re: [TowerTalk] Crank-up base

To: Mike Reublin NF4L <nf4l@comcast.net>, towertalk reflector <towertalk@contesting.com>
Subject: Re: [TowerTalk] Crank-up base
From: Grant Saviers <grants2@pacbell.net>
Date: Wed, 30 Apr 2014 21:32:19 -0700
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Your engineer can design a spread base that handles the load. More concrete, wider, but about 3' deep as a guess. It is an alternative I considered for elevated guy anchors.

Grant KZ1W

On 4/30/2014 5:20 PM, Mike Reublin NF4L wrote:
I'm negotiating to get the base for my HG70-HD dug and poured. I have a high 
water table, soil tends toward sandy, and an engineer said he would be happier 
if the hole were 10' deep rather than the 7.5' called for in the manual.

The concrete guys I'm talking to want to line the hole with plywood to prevent 
collapse. One guy who does a lot of big sign installations says he does it 
regularly, and there would be no stability issues.

I've read several times the pour needs to be into undisturbed soil, no 
backfill, altho that's not in the manual.

What are the facts?

73, Mike NF4L


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