[TowerTalk] 6000 psi grout

[Steve Maki]

I can't speak for US Tower, but on commercial towers it's been used as a 
waterproofing scheme, and has largely fallen out of favor because of 
water entrapment issues and it prevents the inspection of the anchor 
bolts, so has been counterproductive.

-Steve K8LX

On 5/25/2011 7:13 PM, David Gilbert wrote:

> I'm pretty sure the grout is indeed structural ... I believe it's there
> to help prevent the base plate from deforming.
>
> Dave   AB7E
>
>
>
> On 5/25/2011 3:45 PM, R. Kevin Stover wrote:
>> As far as I can tell from the US Tower drawings the grout isn't
>> structural. It's just filling the space between base plate and the
>> concrete base as well as keeping water out. It does keep the leveling
>> nuts from moving.
>>
>> I could be wrong, either way the LXC prime directive still applies.
>>
>>
>> On Wed, 25 May 2011 17:29:41 -0400
>> "Mark Robinson"<markrob at mindspring.com>   wrote:
>>
>>> I will be interested to see what others have to say but maybe a 3:1
>>> mortar mix would work.  6:1 is normal for brick work as you don't
>>> want the mortar to be harder than the brick but since this is being
>>> applied to concrete a 3:1 mix would be much harder and stronger.
>>>
>>> Mark N1UK