UNIVERSITI TUN HUSSEIN ONN MALAYSIA,
86400, PARIT RAJA, BATU PAHAT,
JOHOR
INDIVIDUAL ASSIGNMENT
YEAR: 2014/2015 SEM II
COURSE: ENGINEERING GEOMATICS
SUBJECT CODE: BFC 20703
NAME: NG KAH MUN
MATRIC NUMBER: AF140149
SECTION: 3
LECTURE: SR. DR. MUSTAFFA BIN ANJANG AHMAD
DATE: DECEMBER 2015
Assignment:
What do you know about leveling, traverse and tachometry? Explain in details with suitable diagram.
Explain the applications of Engineering Surveying in Civil Engineering work, such as setting out (horizontal and vertical alignment), cut and fill, plan design and etc.
Table of contents:-
Subtopics Page
1.1 Leveling 3
1.2 Traverse 6
1.3 Tachometry 8
1.4 Setting out 10
1.5 Cut and fill 11
1.6 Plan design 12
Leveling, traverse and tachometry
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The difference in height between the spot where the staff is put is equals to the deduction of BS and FS readings.
With the reduced level of TBM and the data collected from the leveling survey work, we can calculate the reduced level of all station points by using height of instrument method or rise and fall method. Booking is important when doing leveling field work.
There are three main sources of errors in leveling, namely, gross errors, constant errors and random error. Precautions such as minimize line of sight, comparing readings on left and right hand side of staff, adjusting the circular bubble of level, ensuring no graduation errors and making sure that staff is stand vertically as to improve the accuracy of the survey work.
1.2 Traverse
Traverse is a field survey which is used to establish control networks. Control networks are a series of station that are linked together by angle and distance, which are measured by total station. The relative position of traverse stations are then computed by using coordinate system.
The function of traverse survey is for general purpose of angle measurement, provision of control survey, for contour and detail mapping as well as setting out and construction