...as a demolition contractor had occasion to have to scarify a concrete
surface that had been cut at the wrong location and drill holes to glue rebar
pins before replacement of the removed section of concrete. The scarified
surface was also coated with a cement right before placing the new concrete but
I cannot remember what sort of adhesive was used. This method was required by
the engineering firm for the city's sewage treatment plant. Something of the
same method might work for the antenna base. Good luck!
Bill
KZ3I
Sent from my iPhone
> On Aug 9, 2017, at 2:05 PM, Steve Maki <lists@oakcom.org> wrote:
>
> +1 on that.
>
> He might want to prep the existing concrete somehow in an attempt to form a
> water tight seal with the new concrete - however concrete guys do that.
>
> -Steve K8LX
>
>> On 8/9/2017 8:42 AM, Stan Stockton wrote:
>>
>> Cut it off leaving a few inches sticking out of concrete, put it in
>> proper position, form and pour another foot of concrete.
>> Only purpose of the base is to keep it from sinking and stabilize it
>> until first set of guys are in place.
>
>>> Asking for some assistance with a tower issue... I'm involved with
>>> some folks in building a station in PJ4. One of the first tower
>>> bases was accidently set in concrete in a position that it is
>>> rotated 5 to 10 degrees from its correct position in relation to
>>> the guy anchors. I'm hoping that there might be a good suggestion
>>> or two as to what might be a good fix or work-around. The tower is
>>> AB-105, and the base is a section of AB-105 set in concrete. The
>>> plan is to have the tower built up to 140 feet, with guys at 40,
>>> 80, and 120 feet. Some alternatives: If we "use as is", will the
>>> torque of the guy wires cause problems for the tower? Should we
>>> consider some kind of adaptor plate for the guy brackets to correct
>>> the situation? Are we stuck digging and pouring a new base, or new
>>> guy anchors, with the correct positioning? Any ideas will be much
>>> appreciated. Thanks, 73, Rich, N6KT
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