Land Surveying Reconnaissance Lecture 5

Play an AI-generated podcast conversation about this lesson

What is the main purpose of reconnaissance survey?

To establish the method of observation
To draw a detailed map of the area
To estimate the probable cost of construction
To obtain an overall picture of the area (correct)

What is the significance of selecting the most suitable position of stations during reconnaissance?

Ensuring accurate survey results (correct)
Determining the cost of construction
Preparing detailed reports
Creating a detailed map of the area

What does the principle of 'working from whole to part' in surveying emphasize?

Simultaneously conducting control and detail surveying
Starting with detailed surveying and then moving to control surveying
Starting with precise control surveying followed by detail surveying (correct)
Working on subsidiary detail surveying before precise control surveying

What is one of the objectives of reconnaissance survey?

To choose the best route and record it on a map (D) Signup and view all the answers

During reconnaissance, what is established after selecting the most suitable station positions?

The purpose of the survey and required accuracy (B) Signup and view all the answers

Why is aerial reconnaissance survey preferred over ground reconnaissance in some cases?

It provides a more comprehensive view of the area to be surveyed (B) Signup and view all the answers

What is the main purpose of surveying from the whole to the part?

To localize errors (B) Signup and view all the answers

For which purpose is pacing a suitable method of distance measurement?

Reconnaissance surveys (D) Signup and view all the answers

In surveying, what is the purpose of the reconnaissance survey phase?

To get a general picture of the area to be surveyed (B) Signup and view all the answers

What is one of the basic measurements in surveying that involves determining the distance between two points?

Horizontal distance measurement (C) Signup and view all the answers

What is the fundamental principle underlying surveying as mentioned in the text?

Working from the whole to the part (B) Signup and view all the answers

In surveying, what method involves direct measurement of distances with a tape or chain?

Taping (chaining) (C) Signup and view all the answers

What is the purpose of fixing control reference points in surveying?

To determine locations of other points and lines (D) Signup and view all the answers

What is the purpose of the method of tachometry in surveying?

Indirect distance measurement by optical instruments (B) Signup and view all the answers

In surveying, what is the purpose of fixing third points using two control points?

To locate various other points and lines (D) Signup and view all the answers

Which method in surveying involves measuring distances by counting the number of paces taken?

Pacing (C) Signup and view all the answers

What is the significance of tertiary control points in a survey?

They fill gaps left by secondary control points (C) Signup and view all the answers

What is described as an indirect distance measuring instrument in modern surveying operations?

Electronic Distance Measurement (EDM) (D) Signup and view all the answers

Why is it crucial to work from the whole to the part in surveying according to the text?

It localizes errors and keeps them contained within the overall frame (D) Signup and view all the answers

What is the main focus of the office work phase in surveying?

Preparing charts, planes, and maps for presentation (B) Signup and view all the answers

How does working from small to large areas affect survey accuracy according to the text?

It can lead to distortion in large surveys due to small errors magnified. (B) Signup and view all the answers

What role do primary control points play in a survey according to the text?

To provide highly precise positions for reference. (A) Signup and view all the answers

What is the importance of scientific honesty in survey work?

To build trust and professionalism at all stages of the survey (B) Signup and view all the answers

Why is it essential for survey assistants to follow instructions without question?

To ensure accuracy and prevent errors in the survey work (D) Signup and view all the answers

What principle highlights the importance of constantly checking all survey work?

Accuracy Principle (C) Signup and view all the answers

How are accuracy and precision defined in the context of engineering surveying?

Accuracy allows for minor deviations, while precision requires exact measurements (B) Signup and view all the answers

What is the primary reason for selecting equipment that matches the level of precision required?

To lower the cost of the survey for the client (A) Signup and view all the answers

Why should survey records and computations be kept clean and complete in field books?

To ensure that others can clearly understand the survey data (D) Signup and view all the answers

When do observations in a computation become considered unreliable?

When they have not been frequently checked during calculations (C) Signup and view all the answers

Why is achieving high accuracy preferred over excessive precision in a survey?

To prevent errors and ensure a high quality of survey data (A) Signup and view all the answers

Why should distances between stations be measured as they are plotted?

To ensure that there is correspondence with horizontal distances measured in the field (A) Signup and view all the answers

How does untidy record-keeping affect the quality of a survey?

It leads to errors and misunderstandings in interpreting survey data. (B) Signup and view all the answers