Vertical datum definition

Vertical datum means either a fixed benchmark such as NAVD 88 or a site specific tidal datum such as mean high water, mean low water and mean sea level. NGVD 29 is based on the local mean sea level in 1929, which has changed over time. NAVD 88 is the official civilian vertical datum for surveying and mapping activities in the United States. Tidal datum, such as mean sea level (MSL) or mean high water (MHW), vary according to the specific location, and represent the mean heights observed over the national tidal datum epoch.
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Vertical datum means the base elevation used for measuring height. It is calculated by adding the lowest elevation within five feet of an exterior wall to the highest elevation within five feet of an exterior wall on the same building, then dividing the result by two. The highest and lowest points shall be located on the historical or original grade, as determined by the building official.
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Vertical datum means either a fixed benchmark such as NAVD 88
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Examples of Vertical datum in a sentence

  • Vertical datum used in the Flood Insurance Study, on flood maps and in surveys is 3.

  • Vertical datum shall originate from the MOA Benchmark Network or NGS Vertical Level Line System.

  • Vertical datum shall be identified on the plans as NGVD 29 or NAVD 88.

  • Vertical datum shall be referenced to Rochester Topographic Survey (RTS) monumentation.

  • Both of these documents are available on the City’s Unified Development Manual website.The engineer shall incorporate into the plans the latest copy of the construction Water Notes.Project Vertical datum shall be NAVD 88 with equations to legacy City Datum NGVD 29 and any as-built plans that affect the project.

  • The plan shall be drawn at a scale of not less than one inch equals 100 feet using the National Geodetic Vertical datum (NGVD) of 1929 for elevations and a bearings base of grid north of the Wisconsin coordinate system, South Zone.

  • Water, sewer and paving plans may all be shown on the same plan sheets, if a horizontal scale no smaller than 1" = 20' is used.All reclaimed lines and utility crossings shall be shown in both plan and profile views.Project Vertical datum shall be NAVD 88 with equations to legacy City Datum NGVD 29 and any as-built plans that affect the project.

  • Vertical bench marks tied to USGS Vertical datum of 1929 or the City of Kerrville’s Coordinate System, shall be shown on the plat with a maximum horizontal separation of 1,000 feet between benchmarks.

  • Vertical datum used in the Flood Insurance Study, on flood maps and in surveys is:10.

  • The Tri-Services Standards for data content (A/E/C/CADD and Spatial Data Standards) will be used (Tri-Services Standards can be downloaded from http://tsc.wes.army.mil).• Bathymetric Requirements.o Vertical datum will be the NGVD29.


More Definitions of Vertical datum

Vertical datum means the average of the lowest and highest point on the historical grade, as determined by the building official, within five (5) feet of the exterior walls of the building. The finished ground level shall not be more the two (2) feet above the original ground level. On any building constructed seaward of the high-tide, the low point of the vertical measurement shall be the elevation of the extreme high tide, as shown by the official United States tide table for the year in which the permit is issued.
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Related to Vertical datum

  • Gestational carrier means an adult woman who enters into an agreement to have an embryo implanted in her and bear the resulting child for intended parents, where the embryo is conceived by using the egg and sperm of the intended parents.

  • Disinfectant means any oxidant, including but not limited to chlorine, chlorine dioxide, chloramines, and ozone added to water in any part of the treatment or distribution process, that is intended to kill or inactivate pathogenic microorganisms.

  • nautical mile means the international nautical mile of 1 852 metres;

  • Expanded polystyrene means blown polystyrene and expanded

  • STP means the temperature of fifteen degrees Celsius (15°C) and at a pressure of one hundred and one decimal three two five kilopascals (101.325 kPa).