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State Grid Factor program (Land Surveying)

by djames @, North Carolina, Tuesday, October 22, 2013, 06:49 (589 days ago)

Anyone know of a stand alone program that will compute state combine grid factor using Geoid 12A ? for a given point or site average .

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State Grid Factor program

by John Putnam ⌂ @, Forest Grove, OR, Tuesday, October 22, 2013, 07:52 (589 days ago) @ djames

I would say CORPSCON but I'm not sure that it uses Geoid12A yet. I don't think this is a real problem though. The geoid model is used in the computation of the sea-level correction and I don't think a couple of cm difference in the model is going to add any significant error. We are talking about changes in the 9th decimal place which translates to a change of about .1 millimeter, definitely not a problem if you are using a combined factor.

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John Putnam, PLS
OR, CA, WA & ID

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State Grid Factor program

by Norman Oklahoma ⌂ @, Portland, Oregon, Tuesday, October 22, 2013, 08:20 (589 days ago) @ John Putnam

I would say CORPSCON but I'm not sure that it uses Geoid12A yet.

These instructions for loading Geoid09 can be easily adapted to load Geoid12a.

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Lord, help me be the person my dog thinks I am.

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State Grid Factor program

by djames @, North Carolina, Tuesday, October 22, 2013, 18:13 (588 days ago) @ John Putnam

Current download says combine scale is wrong dont use.

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