In general, CORRECT sequence of surveying operations isa)Reconnaissan...
(i) Surveying in the science of determining the relative positions on ground, along with their elevations.
(ii) The relative positions are determined by measuring horizontal distances, horizontal angles, vertical distances and vertical angles. For this, various instrument are needed.
(iii) The entire work stages of survey operation in civil engineering may be divided into the following three stages:
- Field work
- Office work
- Care and adjustment of instruments
Field work:
(i) The field work consists of the measurement of all the necessary horizontal and vertical distances, horizontal and vertical angles, elevations, etc., and keeping a systematic record of what has been done in a field book. Fieldwork is further subdivided into;
- Reconnaissance
- Field measurements
- Observations field record
Office Work:
(i) The office work of a surveyor consists of three types based on the field records.
- Drafting
- Computing
- Designing.
Care and adjustment of instruments:
A great care is required to handle the survey instruments in both field and office. A beginner should always be made familiar with care and adjustment of the instruments and their limitations. Precise instruments like theodolite, level, prismatic compass, etc. need more care than the equipment such as chains, arrows, ranging rods, etc.
So, the correct sequence of surveying operation is:
Reconnaissance → Field observations → Data analysis → Map making