[TowerTalk] 6000 psi grout

[Mark Robinson]

If I wanted to protect the area from corrosion I would leave it open to the 
elements and coat everything with Waxoyl or something similar such as the 
stuff that automotive rustproofing companies like Ziebart use.


Mark N1UK



----- Original Message ----- 
From: "David Gilbert" <xdavid at cis-broadband.com>
To: <towertalk at contesting.com>
Sent: Wednesday, 25 May, 2011 7:53 PM
Subject: Re: [TowerTalk] 6000 psi grout


>
>
> I would agree that it could in practice generate as many problems as it
> tries to address, but it doesn't make sense to me that a manufacturer
> would specify 6,000 psi grout (roughly twice typical concrete) for a
> non-structural intent.  If I simply wanted to keep the water out, I'd
> just shoot the space under the plate with closed cell polyurethane foam.
>
> Dave   AB7E
>
>
> On 5/25/2011 4:30 PM, Steve Maki wrote:
>> 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
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk at contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk