LESSON 1 Flashcards
additional (video)
process of mapping and measuring the physical features of the earth’s surface.
land surveying
what is land surveying?
it is the process of mapping and measuring the physical features of the earth’s surface
one of the oldest and most important profession in the field of engineering.
land surveying
use basic surveying techniques to establish the boundaries of their land and build the iconic pyramids.
egyptians
3 essential tools of a surveyor
theodolite
total staton
gps receiver
use for measuring the vertical and horizontal angles. It consist of a telescope mounted on a tripod. It allows surveyors to take precise angle measurement.
theodolite
is a combination of a theodolite and an EDM (electronic measurement device) to measure the angles, distance, and elevations quickly and precisely.
total station
has become an indespensible tool. It uses the signals from satellites to determine the precise locations on the earth’s surface, greatly simplifying the surveying process.
gps receiver
6 land surveying techniques
traversing
triangulation
leveling
gps surveying
remote sensing
photogrammetry
1.measuring a series of connected lines to create a closed polygon. Surveyors use theodolites and total stations to measure the angles and distances between points enabling them to calculate the shape and size of the area.
traversing
it is based on the principle of triangle. By measuring the angles of a triangle and knowing the distance between two points, surveyors can calculate the position of the third point.
trianglulation
the technique is used to determine the height or elevation of a point to a reference point.
leveling
has become a popular technique for determining accurate positions on the earth’s surface.
gps surveying
involves collecting data from a distance typically through aerial or satellite imagery. allows surveyors to gather information without being physically present at the site.
remote sensing
s the science of obtaining measurement from photographs or images. Surveyors can use aerial images or drone footage to create detailed and accurate maps and 3d models of a paricular area. This technique is widely used in urban planning, topographic mapping, and environmental monitorin
photogrammetry