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Land Surveyor's Dictionary is an ongoing community project to crowdsource surveying definitions and terms with examples for the next generation land surveyor to learn from. If you are a Land Surveyor, add a term to the Almanac with its definition and examples. Help improve the collective knowledge of the community by improving upon terms added by other surveyors by commenting with your examples and applications in your local surveying environment.
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Z Terms in Land Surveying

Z Terms in Land Surveying

Z Terms

ZONE ā€“ The unit of division in State Plane Coordinate Systems created where state boundaries extend beyond limits imposed in the design of the projection system. Where the scale error between a geodetic distance and its grid representation exceeds 1 in 10,000 a state was usually divided into two or more zones. A new origin is used for each zone. See DANGER ZONE.

ZeroĀ - Zero degrees, minutes, and seconds. A perfect zero
ZenithĀ is the direction pointing directly above a particular location (perpendicular, orthogonal). Since the concept of being above is itself somewhat vague, scientists define the zenith in more rigorous terms. Specifically, in astronomy, geophysics and related sciences (e.g., meteorology), the zenith at a given point is the local vertical direction pointing away from direction of the force of gravity at that location.
TheĀ zenithĀ is used in the following scientific contexts:

  • It serves as the direction of reference for measuring theĀ zenith angle, which is the angular distance between a direction of interest (e.g., a star) and the local zenith, relative to the point for which the zenith is defined.
  • It defines one of the axes of theĀ horizontal coordinate systemĀ in astronomy.

Zeiss Instruments- a company founded byĀ Carl ZeissĀ (September 11,Ā 1816Ā ā€“Ā December 3,Ā 1888) .Check out their home pageĀ here.Ā  You may also be interested in checking outĀ Calculation of glass propertiesĀ - a significant contribution to the success of the companies Zeiss and Schott.

Zoning-a term used in urban planning for a system of land-use regulation in various parts of the world, including North America, the United Kingdom, and Australia. The word is derived from the practice of designating permitted uses of land based on mapped zones which separate one set of land uses from another. Zoning may be use-based (regulating the uses to which land may be put), or it may regulate building height, lot coverage, and similar characteristics, or some combination of these. [link Wikipedia] We've talked about theĀ Ā surveying system fromĀ Ā quite a few times (link to manufacturer).Ā Ā 

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