Chuck Turlington
  • Greenville, SC
  • United States
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Chuck Turlington's Discussions

Mean Sea Level (MSL)

Started this discussion. Last reply by Kim Noblitt Jan 17. 6 Replies

Hello All,I have a project in Alabama that is located on the south end, not very close to the coast, but close to a river connected to the coast.  I have never used MSL, but I am working with an…Read more →

Transformation and Projection

Started this discussion. Last reply by Chuck Turlington Aug 23, 2017. 10 Replies

Hello,I am a Civil Engineer with limited survey experience and have been reviewing Transformation and Projection concepts.I noticed the idea of scale factor as it relates to transformations refers to…Read more →

VERTICAL DATUM VS MSL

Started this discussion. Last reply by Billy Brooks Jul 4, 2017. 11 Replies

Hello,I am a Civil Engineer with limited survey knowledge and have been reviewing geodetic concepts and the subject of vertical datum.  In the civil engineering profession, many times a day I see…Read more →

GRS80-ORIGIN

Started this discussion. Last reply by J. Anthony Cavell Jun 29, 2017. 5 Replies

 Hello,I am a Civil Engineer with limited survey knowledge and have been reviewing geodetic concepts and the ellipsoid datums.  I came across confusion regarding the origin of GRS80 thinking it was…Read more →

Tags: GRS80

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Kim Noblitt replied to Chuck Turlington's discussion Mean Sea Level (MSL)
"convert would be the better operative."
Jan 17
Kim Noblitt replied to Chuck Turlington's discussion Mean Sea Level (MSL)
"He should be able to interpolate between the two datums from a single point of measure,"
Jan 17
Chuck Turlington's discussion was featured

Mean Sea Level (MSL)

Hello All,I have a project in Alabama that is located on the south end, not very close to the coast, but close to a river connected to the coast.  I have never used MSL, but I am working with an engineer that has a need to use MSL.  As a designer, I would like to know what the cut-off distance is between use of an MSL tidal gauge and/or NAVD88.  I believe some coastal areas still use MSL, but there must be a rule for knowing when it is no longer accurate or applicable.  In my limited research,…See More
Jan 16
Ian Smith replied to Chuck Turlington's discussion Mean Sea Level (MSL)
"I can't imagine what reason would necessitate the need to use the old National Geodetic Vertical Datum (1929) in preference to the more recent calculation. There will of course be localised and in all probability negligible differences simply…"
Jan 15
Kim Noblitt replied to Chuck Turlington's discussion Mean Sea Level (MSL)
"My be a bit of a stretch for your circumstance, but I would begin by looking at some of the FEMA El Cerificate specs.  Might get you pointed in the right direction."
Jan 15
Donald E Robinson, PLS, CFS replied to Chuck Turlington's discussion Mean Sea Level (MSL)
"The engineer may need elevations referenced to mean sea level (MSL) because it is required by local government or he/she needs to compare the existing elevations to local flood maps and so on. Below is a link to NGS's data maps with horizontal…"
Jan 15
Kevin Singer replied to Chuck Turlington's discussion Mean Sea Level (MSL)
"Chuck, If the site is on a river and only a few miles inland from the coast, quite likely, there’s a gaging station near the site. If can be more specific about details, I might be able to better help you. Cheers, Kev"
Jan 15
Chuck Turlington posted a discussion

Mean Sea Level (MSL)

Hello All,I have a project in Alabama that is located on the south end, not very close to the coast, but close to a river connected to the coast.  I have never used MSL, but I am working with an engineer that has a need to use MSL.  As a designer, I would like to know what the cut-off distance is between use of an MSL tidal gauge and/or NAVD88.  I believe some coastal areas still use MSL, but there must be a rule for knowing when it is no longer accurate or applicable.  In my limited research,…See More
Jan 14

Profile Information

I am here because I am a.
Student
Surveyor Bio:
I am a Student Surveyor and Civil Engineer Designer. I am interested to learn more about the concepts behind datums and GIS technology. I have been working with some survey boundaries and downloading survey data into cad software.
Company
Geosyntec Consultants
Licenses Certifications or Awards
Civil Engineer EIT
I have experience with the following
GPS, boundary surveys, construction staking, teaching, Aerial, Student of Surveying
How many years have you been surveying?
1
Most comfortable with the following types of instrumentation
GPS, Automatic Levels, Old school surveying, theodolite, compass

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