[TowerTalk] [ COUPLE O' QUESTIONS

[Grant Saviers]

Simpson Strong Tie makes epoxy for concrete anchors in  "caulking" gun 
sizes with mixing tube nozzles.  Sold at Home Depot, usually where the 
Simpson anchors are stocked.   Getting the hole extra clean of drilling 
dust is very important.  I've found it takes a wire brush and compressed 
air. For smaller diameters, Simpson also makes the brushes.

About $35 for 22 oz and the mixing tubes are $5 ea plus the dual tube 
gun,  about $60 IIRC.

Grant KZ1W

On 6/8/2013 3:30 AM, K7LXC at aol.com wrote:
>>   2) Same ham with the new tower is on a mountaintop and  only has a few
> feet
> of topsoil, then bedrock, to which he has to bond the  base, rebar, etc.,
> then pour largely above-ground concrete base into a  form.  He has
> certified
> design plans from the tower mfgr, so he is good  in that arena, and has
> exceeded the number & depth of core borings into  the rock specified by the
> mfgr. Question now is: what Epoxy or other  material to use to set up the
> bond of rebar and base bolts into the rock?  The mfgr recommended some type
> of material (I don't know what it is) but my  ham buddy could not find it
> locally (New England). Any suggestions on type  of material, suppliers,
> caveats?
>   
>      You need some construction epoxy. It comes with the  material and the
> catalyst in one tube and mixes as it comes out. It's not cheap  but very
> effective - it's stronger than the concrete so no problem handling the  anchor
> rods.
>   
> Cheers,
> Steve      K7LXC
> TOWER TECH -
> Professional tower work for amateurs
> Cell: 206-890-4188
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