This document discusses different types of surveying classified based on the instruments and methods used. It describes compass surveying which involves taking angular measurements with a surveyor's compass or prismatic compass to determine the magnetic bearing of lines. The prismatic compass survey involves a series of connected lines and is recommended for large, undulating areas with many details, but not where local magnetic attraction may occur. It also briefly describes the prismatic compass which is similar to a surveyor's compass but has a prism and eye piece to view through, and takes whole circle bearing readings of 360 degrees requiring use on a tripod.

1. BY
K.V.ANUHYA
II B.TECH
CIVIL ENGINEERING
RISE KRISHNA SAI
GANDHI GROUP OF
INSTITUTIONS

2. SURVEY CAN BE CLASSIFIED INTO VARIOUS CATEGORIE
DEPENDING ON METHODS USED AND NATURE OF THE
FIELD.
CLASSIFICATION BASED ON INSRUMENTS
THIS IS THE SIMPLEST TYPE OF SURVEYING IN WHICH
ONLY LINEAR MEASUREMENTS ARE MADE WITH A
CHAIN OR TAPE. ANGULAR MEASUREMENTS ARE
NOT TAKEN.

4. THIS IS ONE OF THE TYPE OF SURVEYING IN WHICH
ONLY ANGULAR MEASUREMENTS ARE MADE WITH
A COMPASS
THESE COMPASS ARE OF TWO TYPES. THEY ARE
1.SURVEYOR’S COMPASS
2.PRISMATIC COMPASS

5. THE PRINCILE OF COMPASS SURVEYIMG IS TRAVERSIN
WHICH INVOLVES A SERIES OF CONNECTED LINES.
THE MAGNETIC BEARING OF THE LINES ARE MEASURED
BY PRISMATIC COMPASS.
COMPASS SURVEYING IS RECOMMENDED WHEN THE
AREA IS LARGE, UNDULATING AND CROWDED WITH
MANY DETAILS.
COMPASS SURVEYING IS NOT RECOMMENDED FOR
AREAS WHERE LOCAL ATTRACTION IS SUSPECTED DUE
THE PRESENCE OF MAGNETIC LSUBSTANCES LIKE STE
IRON ORE DEPOSITS ,ELECTRICAL CABLES ETC...,

6. SURVEYOR’S COMPASSS

9. IT IS SIMILAR TO A SURVEYORS
COMPASS EXCEPT THAT IT HAS A PRISM
AND AEYE TO LOOK THROUGH
THE READINGS HERE ARE OF WHOLE
CIRCLE BEARINGS TPYE AND THE
TOTAL ANGLE IS OF 360
THE INSTRUMENT CANNOT BE USED
WITHOUT A TRIPOD.