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 referenced to the North American Vertical Datum of 1988 (NAVD 88).

  • Vertical datum shall be the North American Vertical Datum 1988 (NAVD88).

  • Vertical datum shall be NAVD 88, unless otherwise approved by the County Surveyor.

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

  • NAVD is based upon Vertical datum used by other North American countries such as Canada and Mexico and was established to replace NGVD because of constant movement of the earths crust, glacial rebound, and subsidence and the increasing use of satellite technology.

  • Project Vertical datum shall be NAVD 88 with equations to legacy City Datum NGVD 29 and any as-built plans that affect the project.

  • As is the case for the pulsed spectra aboveand below ∼ 10 keV, these two spectra are drastically differ- ent, and together reveal a sharp minimum in luminosity of 4U 0142 + 61 around 10 keV.Including now in this high-energy spectral picture the time- averaged CGRO COMPTEL 2σ flux upper limits (red trian- gles in Fig.

  • The coordinate reference system used for the field location work shall be based on NAD 83 Kentucky Single Zone SPCS and the elevation datum shall be based on the 1988 North American Vertical datum (NAVD88).


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

  • Suction outlet means the opening or fitting through which the water under negative pressure is drawn from the pool or spa.

  • 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.

  • 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.

  • High global warming potential hydrofluorocarbons means any hydrofluorocarbons in a particular end use for which EPA’s Significant New Alternatives Policy (SNAP) program has identified other acceptable alternatives that have lower global warming potential. The SNAP list of alternatives is found at 40 CFR part 82, subpart G, with supplemental tables of alternatives available at (http://www.epa.gov/snap/ ).

  • Zero tolerance means that the school will not tolerate the possession of any weapon by any person. The term “weapon” is defined as any object or substance which by its design, threatened use, or use could cause bodily injury or property damage, including any object which could reasonably be mistaken for a weapon. The division director and dean of student life shall use their discretion when interpreting the use and intent of such articles at school.

  • Aboveground tank means a device meeting the definition of tank that is situated in such a way that the entire surface area of the tank is completely above the plane of the adjacent surrounding surface and the entire surface area of the tank (including the tank bottom) is able to be visually inspected.

  • Automotive windshield washer fluid means any liquid designed for use in a motor vehicle windshield washer system either as an antifreeze or for the purpose of cleaning, washing, or wetting the windshield. Automotive windshield washer fluid does not include fluids placed by the manufacturer in a new vehicle.

  • Dormitory means a building used in conjunction with an educational building for living quarters for seven or more students;

  • Category 4 Data is data that is confidential and requires special handling due to statutes or regulations that require especially strict protection of the data and from which especially serious consequences may arise in the event of any compromise of such data. Data classified as Category 4 includes but is not limited to data protected by: the Health Insurance Portability and Accountability Act (HIPAA), Pub. L. 104-191 as amended by the Health Information Technology for Economic and Clinical Health Act of 2009 (HITECH), 45 CFR Parts 160 and 164; the Family Educational Rights and Privacy Act (FERPA), 20 U.S.C. §1232g; 34 CFR Part 99; Internal Revenue Service Publication 1075 (xxxxx://xxx.xxx.xxx/pub/irs-pdf/p1075.pdf); Substance Abuse and Mental Health Services Administration regulations on Confidentiality of Alcohol and Drug Abuse Patient Records, 42 CFR Part 2; and/or Criminal Justice Information Services, 28 CFR Part 20.

  • manoeuvring area means that part of an aerodrome to be used for the take-off, landing and taxiing of aircraft, excluding aprons;

  • chemical tanker means a ship constructed or adapted and used for the carriage in bulk of any liquid product listed in chapter 17 of the International Bulk Chemical Code;

  • Aboveground storage tank shall have the meaning ascribed to such term in Section 6901 et seq., as amended, of RCRA, or any applicable state or local statute, law, ordinance, code, rule, regulation, order ruling, or decree governing aboveground storage tanks.

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

  • Expanded polystyrene means blown polystyrene and expanded

  • Sludge dryer means any enclosed thermal treatment device that is used to dehydrate sludge and that has a maximum total thermal input, excluding the heating value of the sludge itself, of 2,500 Btu/lb of sludge treated on a wet-weight basis.