PS Surveying key terms

The degree of skill, diligence, and judgment that a reasonably competent surveyor in the same community and practice area would apply under similar circumstances. It is the benchmark used to judge whether professional work was performed properly.

A failure by a surveyor to meet the standard of care owed to a client or affected party, causing measurable harm. It usually requires proving duty, breach, causation, and damages.

A statutory claim recorded against a property by a surveyor who has not been paid for professional services that improved or benefited the property. It may allow foreclosure or payment from sale proceeds.

A registrant's official stamp, often with signature and date, placed on final survey documents to certify that the work was prepared by or under the responsible charge of a licensed professional.

A situation in which a surveyor's personal, financial, or outside relationships could improperly influence professional judgment. It should be disclosed and avoided or managed so that client interests remain protected.

The government's constitutional power to take private property for a public use after paying just compensation. Surveyors often prepare taking maps, legal descriptions, and boundary exhibits for condemnation proceedings.

A legal doctrine allowing a person who openly, continuously, exclusively, and hostilely occupies another's land for a statutory period to gain title, subject to state-specific requirements and exceptions.

The principle that an earlier-established boundary, grant, or right generally prevails over a later conflicting one. Courts often give priority to the first conveyance or original monument.

A surveying method that determines point positions by measuring distances and angles along a connected series of lines. It is used to establish control, extend surveys, and close back onto known points.

A set of stable, precisely located points used as a framework for coordinating surveys. It provides common reference positions so measurements from different crews or times can be tied together accurately.

Global Navigation Satellite System, a family of satellite positioning systems including GPS. Receivers compute position by measuring signals from multiple satellites, often with correction services for higher accuracy.

Real-time kinematic positioning, a GNSS technique that uses a nearby base station or network correction to resolve carrier-phase ambiguities quickly. It provides centimeter-level coordinates in the field as work proceeds.

A fixed, identifiable point with a known elevation or position, used as a reference for leveling and other surveys. Benchmarks may be official government marks or temporary project points.

The equipotential surface of Earth's gravity field that approximates mean sea level. Orthometric heights are measured relative to the geoid, while ellipsoid heights are measured relative to a mathematical ellipsoid.

A mathematical procedure that distributes measurement errors among observations to produce the most probable coordinates and estimates of uncertainty. It minimizes the sum of weighted squared residuals.

The difference between the sum of measured angles in a closed traverse or polygon and the geometrically required total. It indicates measurement error and is distributed during traverse adjustment.

A coordinate geometry computation that determines the distance and direction between two points from their known coordinates. It is the opposite of computing a new point from a known point, distance, and direction.

The process of calculating how uncertainties in measurements combine to affect computed results. It helps surveyors estimate confidence in distances, coordinates, areas, and other derived values.

A mathematical transformation that converts coordinates from one reference frame to another using translation, rotation, and scale parameters. It is commonly used to relate survey networks or datum realizations.

A circular or spiral alignment used to change the direction of a road, boundary, or other linear feature in plan view. Surveyors compute tangent, curve, and station values for design and staking.

The amount of cut or fill material moved during construction, usually computed by comparing existing and proposed surfaces. Methods include cross sections, average end area, and prismoidal formulas.

A volume computation method that accounts for the shape between end areas by using a mid-section or equivalent prismoid. It is generally more accurate than the average end-area method for irregular terrain.

A system of projected coordinates established for each U.S. state to provide a common mapping framework. It uses defined projections and zones, with grid distances differing slightly from ground distances.

The distinction between distances measured on a map projection grid and distances measured on the Earth's surface. A scale factor converts between them, and ignoring it can cause significant coordinate errors.

A physical object such as an iron pin, stone, or concrete mark that identifies a boundary corner or survey point. Monuments are strong evidence of boundary location and often control over measurements.

A survey line run along the bank or edge of a water body to determine the approximate area of adjoining upland. It is generally not the legal boundary where riparian rights apply.

The rectangular system's division of land into halves, quarters, and smaller fractional parts of a section. Each part is described by compass direction and size, such as the northeast quarter.

A boundary description method that follows courses and distances around a parcel, usually beginning at a known point. It often calls for monuments, adjoiners, and natural features.

A boundary corner whose original position cannot be recovered from evidence. It may be reestablished by proportionate measurement between surviving corners, following applicable surveying rules.

A corner whose physical evidence is gone but whose original location can be recovered from reliable collateral evidence, such as witness marks, records, or undisturbed reference points.

A method of reestablishing a lost corner by distributing the record distance between two surviving corners according to the measured distances between them. It preserves the original survey's relative positions.

A boundary that adjoins a river, stream, lake, or other water body and may shift with natural changes in the water. Legal rules vary by state and by whether the change is accretion, reliction, or avulsion.

A map of land subdivisions or parcels showing boundaries, streets, lots, and other required information, prepared for recording. It legally establishes lots and rights-of-way when approved and filed.

The division of land into two or more lots, parcels, or building sites for sale, development, or separate use. It is usually regulated by local ordinances and requires plat approval.

A proposed subdivision map submitted for review before final approval. It shows layout, streets, utilities, drainage, and lot arrangements so agencies can evaluate compliance with regulations.

The detailed subdivision map prepared for approval and recording after preliminary review. It must meet legal requirements and, once filed, creates the official lots and public improvements shown.

An administrative exception allowing a property owner to deviate from a zoning regulation because of unique hardship or site conditions. It does not change the underlying zoning district.

The minimum required distance between a building or structure and a property line, street, or other specified feature. Setbacks are established by zoning or subdivision regulations.

A boundary survey prepared according to the American Land Title Association and American Congress on Surveying and Mapping standards. It shows title, boundary, easement, and improvement information for real estate transactions.

A map filed with the local recording office that documents a survey and discloses boundary evidence, monuments, and discrepancies. It is often required when survey work creates or reveals boundary issues.