What is land survey


Types of survey

ALTA/ACSM Survey: a surveying standardbe done to a lesser standard, however
jointly proposed by the American Landmost modern U.S. state minimum standards
Title Association and the Americanrequire the same standard of care for
Congress on Surveying and Mapping thatmortgage surveys as any other survey.
incorporates elements of the boundaryThe resulting higher price for mortgage
survey, mortgage survey, and topographicsurveys has led some lending
survey. ALTA/ACSM surveys, frequentlyinstitutions to accept "Mortgage
shortened to ALTA surveys, are oftenInspections" not signed or sealed by a
required for real estate transactions.surveyor.
Archaeological survey: used toPlot Plan or Site Plan: a proposal plan
accurately assess the relationship offor a construction site that include all
archaeological sites in a landscape orexisting and proposed conditions on a
to accurately record finds on angiven site. The existing and proposed
archaeological site.conditions always include structures,
As-Built Survey: a survey conducted atutilities, roadways, topography, and
the completion of a construction projectwetlands delienation and location if
to verify, for local and state boards,necessary. The plan might also, but not
that the work authorized was completedalways, include hyrdology, drainage
to the specifications set on the Plotflows, endangered species habitat, FEMA
Plan or Site Plan. This usually entailsFederal Flood Insurance Reference Maps
and complete survey of the site toand traffic patterns.
confirm that the structures, utilities,Subdivision Plan: a plot or map based on
and roadways proposed were built in thea survey of a parcel of land. Boundary
proper locations authorized in the Plotlines are drawn inside the larger parcel
Plan or Site Plan.to indicated the creation of new
Bathymetric Survey: a survey carried outboundary lines and roads . The number
to map the seabed profile.and location of plats, or the newly
Boundary Survey: the actual physicalcreated parcels, are usually discussed
extent of property ownership, typicallyback and forth between the developer and
witnessed by monuments or markers, suchthe surveyor until they are agreed upon.
as (typically iron rods, pipes orAt this point monuments, usually in the
concrete monuments in the ground, butform of square concrete blocks or iron
also tacks or blazes in trees, piledrods or pins, are driven into the ground
stone corners or other types ofto mark the lot corners and curve ends,
monuments) are measured, and a map, orand the plat is recorded in the cadastre
plat, is drawn from the data. NOTE: The(USA, elsewhere) or land registry (UK).
willful destruction and or removal ofIn some jurisdictions, the recording or
above said monuments is illegal in thefiling of a subdivision plat is highly
United States. These acts will alwaysregulated. The final map or plat
result in fining and rarely, but notbecomes, in effect, a contract between
never, in jailtime.the developer and the city or county,
Construction surveying (otherwisedetermining what can be built on the
"lay-out" or "setting-out"): the processproperty and under what conditions.
of establishing and marking the positionAlways upon finaly completion of a
and detailed layout of new structuressubdivision an As-Built Plan is required
such as roads or buildings forby the local government. This is done so
subsequent construction. In this sense,that the roadway constructed therein
surveying may be regarded as awill pass ownership from the developer
sub-discipline of civil engineering.to said local government by way of a
Deformation Survey: a survey tocontract called a Covenant. When this
determine if a structure or object isstage is completed the roadways will now
changing shape or moving. Thebe maintained, repaved, swept, and
three-dimensional positions of specificplowed (if necessary for your geographic
points on an object are determined, aregion) by the local government
period of time is allowed to pass, theseTape Survey: this type of survey is the
positions are then re-measured andmost basic and inexpensive type of land
calculated, and a comparison between thesurvey. Popular in the middle part of
two sets of positions is made.the 20th century, tape surveys while
Engineering Surveys: those surveysbeing accurate for distance lack
associated with the engineering designsubstantially in their accuracy of
(topographic, layout and as-built) oftenmeasuring angle and bearing. Considering
requiring geodetic computations beyondthat a survey is the documentation of
normal civil engineering practise.one-half (1/2) distances and one-half (1
Erosion and Sediment Control Plan: a2) bearings this type of survey is no
plan that is drawn in conjunction with alonger accepted amongst local, state, or
Subdivision Plan that denotes howfederal regulatory commitees for any
upcoming construction activities willsubstaintial construction work. However
effect the movement of stormwater andfor determining the extent of you
sediment across the construction siteproperty boundaries for way of
and onto abutting properties and howpeace-of-mind this type of survey is the
developers will adjust gradingleast expensive, least time consuming
activities to limit the depositing ofand least invasive, while being no where
more stormwater and sediment ontoclose to accurate for the standards that
abutting properties than was done priorare practiced by professional land
to contruction.surveyors.
Foundation Survey: a survey done toTopographic Survey: a survey that
collect the positional data on ameasures the elevation of points on a
foundation that has been poured and isparticular piece of land, and presents
cured. This is done to ensure that thethem as contours on a plot.
foundation was constructed in theWetlands Delineation & Location Survey:
location authorized in the Plot Plan,a survey that is completed when
Site Plan, or Subdivision Plan. When theconstruction work is to be done on or
location of the finished foundation isnear a site containing defined wetlands.
checked and approved the building of theDepending on your local, state, or
remainder of the structure can commence.federal regulations wetlands are usually
This should not be confused with anclassified as areas that are completely
As-Built Survey which is not to be doneinundated with water more than two (2)
until all work on the site is completed.weeks during the growing season. Contact
you local or state Conservation
Hydrographic Survey: a survey conductedCommission or Wetlands Regulatory
with the purpose of mapping theCommission to determine the particular
coastline and seabed for navigation,definition for wetlands in your given
engineering, or resource managementgeographical region. The boundary of the
purposes. Products of such surveys arewetlands is determined by observing the
nautical charts. See hydrography.soil colors, vegetation, erosion
Mortgage Survey or Physical Survey: apatterns or scour marks, hydrology, and
simple survey that generally determinesmorphology. Typically blue or pink
land boundaries and building locations.colored flags are then placed in key
Mortgage surveys are required by titlelocations to denote the boundary of the
companies and lending institutions whenwetlands. A survey is done to collect
they provide financing to show thatthe data on the locations of the placed
there are no structures encroaching onflags and a plan is drawn to reference
the property and that the position ofthe boundary of the wetlands against the
structures is generally within zoningboundary of the surrounding plots or
and building code requirements. Someparcels of land and the construction
jurisdictions allow mortgage surveys towork proposed within.



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