Join

Join TheConstructor to ask questions, answer questions, write articles, and connect with other people. When you join you get additional benefits.

Have an account? Log in
Continue with Facebook
Continue with Google
or use


Have an account? Log in Now

Log in

Log in to TheConstructor to ask questions, answer people’s questions, write articles & connect with other people. When you join you get additional benefits.

Join Here

Join for free or log in to continue reading...

Continue with Facebook
Continue with Google
or use


Forgot Password?

Don't have account, Join Here

Forgot Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

Have an account? Log in Now

Sorry, you do not have permission to ask a question, You must login to ask question. Become VIP Member

Join for free or log in to continue reading...

Continue with Facebook
Continue with Google
or use


Forgot Password?

Don't have account, Join Here
Become VIP Member
The Constructor Logo The Constructor Logo
Log inJoin

The Constructor

The Constructor Navigation

  • Articles
    • Recent Articles
    • Popular Articles
    • Write Article
  • Questions
    • Recent Questions
    • Popular Questions
    • Polls
    • Ask a Question
  • Categories
    • How To Guide
      • Material Testing Guide
    • Concrete
    • Building
      • Brick Masonry
      • Building Materials
      • Building Tips
    • Construction
      • Equipments
      • Management
    • Digital tools
    • Geotechnical
      • Foundation
Search
VIP Dashboard

Mobile menu

Close
Ask a Question
  • Questions
    • Popular Questions
    • Trending Questions
    • New Questions
    • No Answer Questions
  • Ask Questions
  • Write for us
  • Building
    • Brick Masonry
    • Building Materials
    • Building Tips
    • Formwork/Shuttering
  • Concrete
    • Concrete Admixtures
    • Cement
    • Concrete Cracks
    • Concrete Properties
  • Construction
    • Construction Equipments
    • Construction Management
    • Construction Project
    • Estimating & Costing
  • How To Guide
    • Material Estimation
    • Repair/Protection Guide
    • Material Testing Guide
    • Mix Design Guide
    • Rate Analysis
  • Geotechnical
    • Foundation Engineering
    • Ground Improvement
  • Structural Engineering
    • Strengthening of Structure
    • Structual Inspection
    • Structural Detailing
  • Surveying
  • Tips

How is resection done in survey?

Home/ Questions/Q 19584
Next
In Process

Do you need to remove the ads? Become VIP Member

Asked: November 18, 20172017-11-18T22:57:05+05:30 2017-11-18T22:57:05+05:30In: Civil Engineering Jobs
Gopal Mishra
Gopal Mishra

Gopal Mishra

  • 70 Questions
  • 44 Answers
  • 7 Best Answers
  • 577 Points
View Profile
Gopal Mishra

How is resection done in survey?

  • 0
  • 4 4 Answers
  • 1,652 Views
  • 0 Followers
  • 0
  • Share
    Share
    • Share on Facebook
    • Share on Twitter
    • Share on LinkedIn
    • Share on WhatsApp

4 Answers

  • Voted
  • Oldest
  • Recent
  1. aviratdhodare

    aviratdhodare

    • 37 Questions
    • 252 Answers
    • 0 Best Answers
    • 480 Points
    View Profile
    aviratdhodare
    2020-10-03T11:26:45+05:30Added an answer on October 3, 2020 at 11:26 am
    How is resection done in survey?

    The process by which the position of an unknown points at which plane table is set is determined & plotted o the plan with the help of two or more well-defined station whose position are already plotted on the plan. In this method, the line of sight passes from unknown points to known points & the ray drawn is called as resector.

    • Let assume 2 pts A & B are plotted on a drawing sheet a & b.
    • Now with help of a & b, we have to plot position of instrument ‘c’.
    • Now orientation of plane table at ‘c’ the intersection of two rays from a & b will give correct location of instrument.

    Special methods of resection

    1. Two pt problem
    2. Three pt problem

    Two pt problem:-

    1. In this position, 2 well-defined pts whose positions have already been plotted on plan are selected.
    2. Then by perfectly bisection these points, a new station is established at reqd positions.

    Three pt problem:-

    1. In this position, 3 well-defined pts whose positions have already positioned on map.
    2. Then by perfectly bisecting these 3 well-defined pts, a new station is established at reqd position.
    3. No auxiliary station is reqd in order to sol;ve this pblm.

    Errors & Precautions

    • Instrumental error
    1. Surface of table may not be perfectly level.
    2. The fiducial edge of alidade might not straight.
    3. Vanes may not be vertical.
    4. Needle of trough compass may not be perfectly balanced.
    • Personal error
    1. Levelling of table may not be perfectly level.
    2. The table may not be perfectly centered.
    3. The orientation of table may not proper.
    4. Object may not be bisected properly.
    5. Rays might not drawn accurately.
    • 31
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
  2. nikeetasharma

    nikeetasharma

    • 23 Questions
    • 303 Answers
    • 0 Best Answers
    • 2,680 Points
    View Profile
    nikeetasharma Guru
    2020-11-23T14:12:54+05:30Added an answer on November 23, 2020 at 2:12 pm

    Resection is also known as free stationing in surveying which is a method of determining a location of one unknown point in relation to know points. In resection, the one point with unknown coordinates is occupied and sightings are taken to the known points; in intersection, the two points with known coordinates are occupied and sightings are taken to the unknown point.

    • 0
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
  3. Komal Bhandakkar

    Komal Bhandakkar

    • 46 Questions
    • 255 Answers
    • 0 Best Answers
    • 2,040 Points
    View Profile
    Komal Bhandakkar AUTHOR
    2020-11-26T22:21:05+05:30Added an answer on November 26, 2020 at 10:21 pm

     

    Resection is nothing but free stationing.

    It is a method of finding a location of unknown point about known points.

    The total station is simply mean a zero point.

    Freely positioned the instrument hence every survey points should be at appropriate sight from the instrument.

    Then setting up a zero point on a known point and often it is impossible to see all survey points.

    With the zero points, the distances & bearings are measured to minimum two points of a control network.

    With the help of a geometric transformation, those polar coordinates are transformed into a coordinate system of a control network.

    Using square adjustment, errors are distributed.

    The orientation as well as the position of the total station about where the control network is established.

    Thank You.

    • 0
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
  4. aviratdhodare

    aviratdhodare

    • 37 Questions
    • 252 Answers
    • 0 Best Answers
    • 480 Points
    View Profile
    aviratdhodare
    2021-01-05T14:53:51+05:30Added an answer on January 5, 2021 at 2:53 pm
    This answer was edited.

    Resection Method.

    This method is used for establishing the instrument stations or after completing the traverse surveying the important object cannot be located due to difficulties & missed the station. PROCESS:-

    1. Select the two stations P & Q on the ground & measure the length PQ & plot to a scale pq on a suitable scale.
    2. Set the table at P , Centre, & level the table so that the point p is over the P.
    3. Place the alidade along pq, orient the table by turning the board until the signal at Q is bisected, & then clamp it.
    4. With the alidade touching at p sight the station R & draw a ray p to r.
    5. Shift the table at R. & make the center & level & sight the point P by back sighting & clamp the table.
    6. With the alidade centered on q, sight the station Q & draw a ray. The point of intersection of this ray & that previously drawn from p gives the reqd point r.
    • 0
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp

You must login to add an answer.

Join for free or log in to continue reading...

Continue with Facebook
Continue with Google
or use


Forgot Password?

Need An Account, Join Here

Sidebar

Popular Articles

  • Gopal Mishra

    Types of Foundation for Buildings and their Uses [PDF]

  • Gopal Mishra

    Compressive Strength of Concrete -Cube Test [PDF], Procedure, Results

  • Padmanabhan G

    Methods of Rainwater Harvesting [PDF]: Components, Transport, and Storage

  • Sadanandam Anupoju

    16 Types of Heavy Equipment Used in Construction

  • Fasi Ur Rahman

    Standard Size of Rooms in Residential Building and their Locations

Recent Articles

  • Xian

    Bricklaying Robots in Construction #2

  • Xian

    Welcome to the Gutenberg Editor

  • Xian

    Bricklaying Robots in Construction

  • Ravi Panwar

    Rongjiang Bridge: The World’s Longest Bridge of Rigid Girder and Flexible Arch

  • Ravi Panwar

    Qinghai–Tibet Railway: The Longest and Highest Highland Railway in the World

Recent Questions

  • Shailendra

    In what case is a Shear Key provided in Foundation?

    • 0 Answers
  • Salman

    What is piping technology for termite treatment in building?

    • 0 Answers
  • nikeetasharma

    Which instrument is widely used for surveying?

    • 1 Answer
  • nikeetasharma

    Which type of reinforcement are used in pre-stressing?

    • 0 Answers
  • Bhavani Pesaru

    How can we use magnetic levitation method in civil engineering?

    • 0 Answers

Explore

  • Questions
    • Popular Questions
    • Trending Questions
    • New Questions
    • No Answer Questions
  • Ask Questions
  • Write for us
  • Building
    • Brick Masonry
    • Building Materials
    • Building Tips
    • Formwork/Shuttering
  • Concrete
    • Concrete Admixtures
    • Cement
    • Concrete Cracks
    • Concrete Properties
  • Construction
    • Construction Equipments
    • Construction Management
    • Construction Project
    • Estimating & Costing
  • How To Guide
    • Material Estimation
    • Repair/Protection Guide
    • Material Testing Guide
    • Mix Design Guide
    • Rate Analysis
  • Geotechnical
    • Foundation Engineering
    • Ground Improvement
  • Structural Engineering
    • Strengthening of Structure
    • Structual Inspection
    • Structural Detailing
  • Surveying
  • Tips

Footer

  • Home
  • About Us
  • Contact Us
  • Privacy Policy
  • Terms & Conditions
  • Ask Questions
  • Write for us
  • Popular Questions
  • Facebook
  • Instagram
  • Telegram

© 2009-2021 The Constructor. All Rights Reserved.