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john-nolton
@john-nolton
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Joined: July 2, 2010 6:08 pm
Topics: 27 / Replies: 536
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RE: GPS on Benchmarks

Jim Frame, post: 361694, member: 10 wrote: There's a list somewhere of priority bench marks, but I wasn't able to find it just now. Anyone have a lin...

9 years ago
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RE: Latitudes again!

1st. No one has to go to any Dept. and say move your sign. Its close enough for City work/State work. For Scott Zelenak: What you have done is take ...

9 years ago
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RE: Latitudes again!

In my above post I forgot to include a formula by NGS for calculating the quadrant distance. In USC&GS report of 1881, Appendix #12 there is an ar...

9 years ago
Topic
9 years ago
Replies: 24
Views: 3
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RE: Latitudes anyone?

For those that like to play with numbers I give you the following;GRS80 Ellipsoid quadrant distance = 10 001 965. 72923 04570 92291 + meters Clarke 18...

9 years ago
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RE: Latitudes anyone?

So no one wants to say what ellipsoid they are working on. It sure was NOT stated in the original post. Also what accuracy inthe answer do you want? (...

9 years ago
Topic
9 years ago
Replies: 5
Views: 11
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RE: minimum RR curve radius

BigE, post: 350615, member: 435 wrote: For you rail road surveyors. What's the minimum radius (in feet please)?This is for open road main line - not s...

9 years ago
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RE: Carrying the Instrument

John Hamilton, post: 353050, member: 640 wrote: A level I carry over my shoulder on the tripod. A total station...never. It goes in a padded backpack,...

9 years ago
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RE: Double run leveling accuracy

Big Al, could not find the info. on bar code leveling BUT went to the internet and NGS web page and printed it off again ( and then found my stuff). A...

9 years ago
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RE: Double run leveling accuracy

Looking at the "Tolerances for geodetic leveling" (it always helps to look at the book), see NOAA Manual NOS NGS 3, Geodetic Leveling, 1981 page3-7."...

9 years ago
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RE: This link demands two threads: 2: Advantages of Extremely short baselines

Base Lines, Vectors , etc. First I would like to say that Kent's post should of had the title of "Back to Basics". It has been known since the very fi...

9 years ago
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Replies: 0
Views: 26
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RE: Tensor application in geodesy.

You say you are looking for a article of Tensor application in geodesy or geodynamic. If you look for the Hotine-Marussi Symposium on Mathematical Geo...

9 years ago
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RE: LSQ, Transit, Compass, Crandall Adjustments

I would like to say that the Compass Rule should be called by its correct name " Bowditch Rule". This is what Joseph "Joe" Dracup of NGS in 1973 had ...

9 years ago
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RE: How do you personally achieve redundancy for least squares?

Totalsurv, post: 343442, member: 8202 wrote: How do you personally achieve redundancy for least squares? Which of the following do you do- Sets Cro...

9 years ago
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RE: How do you personally achieve redundancy for least squares?

Totalsurv, post: 343442, member: 8202 wrote: How do you personally achieve redundancy for least squares? Which of the following do you do- Sets Cro...

9 years ago
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RE: Precision Surveying: The Principles and Geomatics Practice by John Olusegun Ogundare

It looks like this book will not be released till 12 Oct. 2015 from Amazon.Also I don't think this book will be for the vast majority of surveyors tha...

9 years ago
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RE: Benchmarks not in NGS Database

USGS Publications (historic)base9geodesy thanks again for the informative information. I have not been back to NGS since they moved to Silver Springs ...

9 years ago
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