WHAT ARE THE DIFFERENT TYPES OF SURVEYS ?
Boundary survey: Establishing or re-establishing the
boundary lines of a plot of land.
Subdivision Survey: Dividing a plot of land into
smaller lots for development.
Topographic Survey: Locating natural features,
structures and other detail on the land.
Site Planning Survey: Combination of boundary and
topographic survey for design of improvements or developments.
Control Survey: The precise location of horizontal and
vertical positions of points and lines for use in subsequent
surveys.
Court Exhibit Survey: Preparing a visual exhibit to be
use in a specific court case.
Construction Survey: Measurements made while
construction is in process, used by the contractor for placement of
roads, buildings, pipelines, and other improvements.
Cadastral Survey: Original survey, resurvey, or
retracing of public lands within the Ordnance Survey System of
Ireland for the restoration of property lines.
Route Survey: Reconnaissance, preliminary survey and
location survey for a linear facility such as a road, railroad line,
pipeline or transmission line.
Geodetic Survey: A precise survey
which takes into account the size and shape of the earth.
Mineral Survey: Mining claim surveys.
HOW MUCH WILL A SURVEY COST
?
This will mainly depend on the following;
The availability and adequacy of property records.
Any previous surveying control points and mapping.
The lie of the land; difficult terrain, heavy foliage, access etc.
Survey complexity and regulatory compliance.
Inclement weather and other seasonal conditions.
Other limitations, service costs and expenses.
An estimate of cost and a time schedule will always be provided, in
writing, by Ranell & Associates Ltd.
TYPES OF SURVEYING ACTIVITIES.
Traditional Total Station Surveying
The primary function of the field surveyor is observing, measuring
and mapping, The most important tool utilised for these activities
is the Total Station. It's given the name because it incorporates a
distance meter for measuring distances and a theodolite for
measuring angles into one instrument.
The Total Station measures by sending a laser beam of infrared light
toward a prism, usually supported either on a tripod or a pole. This
beam reflects off the prism directly back to the Total Station. By
measuring the time it takes for the light to return, the Total
Station calculates the distance to the prism. The information that
the Total Station measures (angles and distances) is recorded in a
data collector for later downloading to a computer in the office /
field. The data collector also doubles as a field computer, enabling
us to calculate coordinate geometry in the field and figure out the
proper position which we have occupied when surveying.
Global Positioning System (GPS)
GPS is a tool we use for precise positioning of points. It operates
through satellites which send out signals to our receiver. The
receiver then transmits those signals to our data collector, which
again stores the data. After we get it into the office, we download
the data into the computer, and the computer software resolves from
the data the exact position of our point within a few millimetres.
Levelling & 3-D Surveying
There are different ways we compute elevations of land. The most
common is an operation known as differential levelling. It's called
this because you are calculating the difference in elevation between
two points on the ground. You basically look at a ruler held on the
ground and see how high above the ground your level is set up. Then
you look at the same ruler on a different spot on the ground and see
how high above that spot your level is set up. This gives you the
difference in elevation between the points.
We can also derive elevations with our Total Station by using
geometry and measuring the angles and distances. The Global
Positioning System can also calculate elevations by intersecting
vectors from satellites in space.
Should you have any further questions please e mail: info@ranell.org
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