Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
739 views
in General by (111k points)
closed by
The most suitable method for laying a curve is:-
1. Tachometer method
2. Two theodolite method
3. Deflection distance method
4. Offsets form the tangent method

1 Answer

0 votes
by (108k points)
selected by
 
Best answer
Correct Answer - Option 2 : Two theodolite method

Concepts:

The methods used in setting out a curve  are classified as  linear method and angular methods.

1. Linear method adopts the usage of chain or tape in which only distance can be found but not angles. Moreover, this process is used when accuracy is not required and speed of work is concerned.

The following are some of the linear methods used for setting out simple circular curves:

 (i) Offsets from long chord

(ii) Successive bisection of chord

 (iii) Offsets from the tangents–perpendicular or radial

 (iv) Offsets from the chords produced.

2. Angular Methods: In these methods linear as well as angular measurements are used. Hence, the surveyor needs chain/tape and instruments to measure angles. Theodolite is the commonly used instrument.

The following are the angular methods which can be used for setting circular curves:

 (i) Rankine method of tangential (deflection) angles.

 (ii) Two-theodolite method

 (iii) Tachometric method

The suitability of methods depends on the site conditions. For example, when the curve is to be set out over a rough ground then Theodolite method & Tachometric method is used.

However, in general case two theodolite method is most appropriate as such in this error is not carried forward as each point is fixed independently. 

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...