We aRe noT anyOne, buT wE a limiteD.: June 2019

VIDEO

Leveling

Two Peg Test (Error checking)

Credit to : Level Error Checking For Level Machine/Auto Level. (youtube.com)

Series levelling Part 1.

Credit to : Differential Leveling Part 1 of 2 (youtube.com)

Series levelling Part 2.

Credit to : Differential Leveling Part 2 of 2 (youtube.com)

Invert levelling.

Credit to : Inverted levelling with animation. (youtube.com)

Traverse

How to setup Total Station.

Credit to : AKU BUDAK SURVEY - YouTube

How to setup Total Station.

Credit to : 60seconds-How to Set Up and Level a Total Station (youtube.com)

Procedure of close traverse.

Credit to : conducting a CLOSED TRAVERSE in surveying with animation. (youtube.com)

Setting Out

Procedure of Setting out Building.

Credit to : Site Set Out - Understanding Profiles (youtube.com)

GNSS Survey

Procedure of GNSS Survey.

Credit to : KJ MY Travel 2324 15s 16x9 Ms (youtube.com)

GNSS vs GPS

Credit to : GNSS : Apa Global Navigation Satellite Systems (GNSS) ? (youtube.com)

TUTORIAL OF TRAVERSE SURVEY

Tutorial 1
a. Refer to Table 1a, calculate the final bearing for all station.

Table 1a : Data of traverse

b. Refer to Table 1b and calculate :

i. Latitude and Departure for all station.

ii. Correction of latitude and departure

iii. Final latitude and departure.

iv. Calculate coordinate if coordinate of station 1 is (500,500)

Table 1b: Final Bearing

Tutorial 2

Table 2

Refer to Table 2;

a. Calculate the final bearing for all station.

b. Calculate;

i. Latitude and Departure for all station.

ii. Correction of latitude and departure

iii. Final latitude and departure.

iv. Calculate coordinate if coordinate of station 1 is (1000,1000)

Refer formula;

FIELD WORK

1. TWO PEG TEST

2. SERIES LEVELLING

3. LONGITUNAL SECTION & CROSS SECTION (PROFILE)

4. COUNTORING

5. DFT (TEST OF INSTRUMENT)

6. TRAVERSE SURVEY

A method of establishing control points, their position being determined by measuring the distances between the traverse stations (which serve as control point) and the angles subtended at the various stations by their adjacent stations.

Principles of Theodolite

The principles of the theodolite are that a beam of light travels in a straight line, and that when you know the length of one side of a triangle and the angles of the corners as measured by reflecting beams of light then you can precisely map features on the ground both horizontally and vertically.

Type of Theodolite

Figure 1 : Type of Theodolite

Theodolite Vernier

The vernier theodolite is a also know as a transit. In a transit theodolite or simply transit the telescope can be rotated in a vertical plane. Earlier versions of theodolite were of the non-transit type and are obsolete now.

Two view of a vernier theodolite are in Figure 2. The instrument details vary with different manufacturers but the essential parts remain the same.

Figure 2 : Component of Theodolite Vernier

Theodolite Optic

Theodolite Optic is a precision direction type of instrument for observing horizontal and vertical directions. In an optical theodolite, the horizontal and vertical dials are made of optical glass and the optical system of the horizontal and vertical dial microscope transmits images of diametrically opposite end lines of the dials to the field of the reading microscope.

Figure 3 : Component of Theodolite Optic

Figure 4 : Circle-reading optical system of Theodolite Optic

Figure 5 : How to reading of Theodolite Optic

Digital Theodolite

A digital theodolite consists of a telescope mounted on a base, as well as an electronic readout screen used to display horizontal and vertical angles. A digital theodolite is convenient because the digital reading replaces the traditional graduated circle, and this produces a more accurate reading.