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 will be NAVD88 (North American Vertical Datum of 1988).

  • Vertical datum will be NAVD 88, horizontal datum will be State Plane.

  • Horizontal datum will be on NAD 83/90 & Vertical datum will be on NAVD 88 datum.

  • Horizontal datum shall be NAD 83 (2011); Vertical datum shall be NAVD 1988.

  • Vertical datum will be NAVD 88 and horizontal datum will be NAD 83 (CONUS).

  • For the avoidance of doubt, by including this provision, Defendants take no position on the award of any Attorneys’ Fees and Expenses, including any interest thereon, requested by Class Counsel.

  • Vertical datum will be NAVD88, with observations made on a minimum of two (2) Los Angeles County benchmarks.

  • The vertical position of all points shall be referenced to the North American Vertical datum of 1988.

  • Vertical datum will be based on City of Tempe datum, and a controlling City benchmark will be referenced on the construction drawings.


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

  • Vertical service means an ancillary service that is offered in connection with one or more telecommunications services, which offers advanced calling features that allow customers to identify callers and to manage multiple calls and call connections, including conference bridging services; and

  • Gestational carrier means the person giving birth to the Child.

  • CDBG means community development block grant.

  • Plasma arc incinerator means any enclosed device using a high intensity electrical discharge or arc as a source of heat followed by an afterburner using controlled flame combustion and which is not listed as an industrial furnace.

  • fire hydrant means a fire plug or fixed pillar fire hydrant;