[time-nuts] GPS Antenna on Tower.

[jimlux]

On 6/20/17 5:11 AM, Didier Juges wrote:
> If that is not time-nutty, I do not know what will :)

if you're a "real time-nut" you drill your own holes - you buy a surplus 
drilling rig, refurbish it, figure out how to work it (maybe there's a 
"drill-nuts" list?), etc.

But at least the station will probably fit in your backyard.

>
> On Jun 20, 2017 7:04 AM, "jimlux" <jimlux at earthlink.net> wrote:
>
>>
>> for geodetic measurements, they drill a hole down to bedrock, and run a
>> pipe down to anchor the antenna to the bedrock.
>>
>> "All holes shall be drilled straight enough so that PVC casing can be
>> installed in the top 15.5 ft of each hole, and that the steel pipe can be
>> freely lowered, not forced, for its entire 35 ft length."
>>
>> http://kb.unavco.org/kb/article/deep-drilled-braced-monument
>> -overview-300.html
>> http://www.scign.org/arch/sdb_monument.htm
>>
>>
>> Google for Ken Hudnutt's or Frank Webb's papers
>>
>>
>> or a 3m tall monument for a CORS station
>>
>> http://www.mwrtk.net/support_docs/corsinstallprocedures.pdf
>>
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