Mentoring 2024 Flashcards
(11 cards)
A point of fixed location which can be used as reference point
Bench Mark
Type of surveying which involves the determination of alignment, grades, earthwork quantities, location of natural and artificial objects in connection with the planning, design, and construction of various linear projects.
Route Surveys
Types of traverse surveying, originates at a point of known position and closes at another point whose location is not known.
Open traverse
Types of traverse surveying, originates on a point of known position and closes on the same point (closed loop traverse) or on another point of known position (closed link traverse).
Closed traverse
Type of survey in which a number of connected survey lines form the framework and the directions and lengths of the survey lines are measured with the help of an angle measuring instrument and tape or chain, respectively.
Traverse surveying
During a laboratory exercise, a student recorded 60, 61, 59, 62, and 60 paces while walking along a 50-meter course on a concrete surface. What is the student’s pace factor?
0.83 m
Sum = 302
Mean = 60.4
50/60.4= 0.83m
This method allows the computation of an area of a closed non-crossing plane polygon from the coordinates of its vertices
Coordinate method
Refers to the difference between two or more measured values of the same quantity
Discrepancy
What sources of error caused by environmental conditions or significant changes in environmental conditions, such as windspeed, air temperature, atmospheric pressure, humidity, gravity
A. Instrument errors
B. Human errors
C. Natural errors
D. Environmental errors
C. Natural errors
Instrument errors- caused by imperfectly constructed, adjusted, or calibrated surveying equipments
Human errors- caused by physical limitations and inconsistent setup and observation habits of the surveryor
Difference between a measured value and its true value.
Error
The standard length of chains and links used in surveying
Chain length= 66 ft
Link length= 0.66 ft
