International Surveyors Week 2018

A week long celebration of Land Surveyors, Worldwide

Africa Asia North America Europe South America Middle East Oceania +Add a Story

Survey Earth in a Day 7

Remeasuring the entire planet in a single day as a community of Land Surveyors

Visit Post

How to use the new Surveying Jobs Board

Find and Post Available Surveying Jobs

Learn about Jobs Board

Land Surveyor Submitted Photos

See through the eyes of other surveyors, worldwide.

Featured Photos

Surveying Videos

Learn Something New Everyday

Surveying Tutorials

If you are a land surveyor who would like to contribute to the community's collective knowledge, here is where you get started.

Sign me up!

How do we calculate the center coordinate of a circle,if we have the PI(point of intersection coordinates), radius of the circle, coordinates of the BC, MC, and EC(beginning, Middle and End of curve respectively). Also calculate the coordinates of chainages in the curve.

Thank you for all the replies in advance.

This Content Originally Published by a land surveyor to Land Surveyors United Network

Views: 114

See Your Saved Posts Timeline

☇ Reply to this

Replies to This Discussion

Hi Nitesh,

It depend on what you are calculating with. Do you use a calculator.

 First your heading for the discussion ( Center coordinates for a horizontal curve)

Then you ask this, 

How do we calculate the center coordinate of a circle ??,if we have the PI(point of intersection coordinates), radius of the circle ??, coordinates of the BC, MC, and EC(beginning, Middle and End of curve respectively). Also calculate the coordinates of chainages in the curve.

A horizontal curve is not a circle, it is part of a circle. if you have the radius,you already have the center.

Are you asking for the center or mid point in a horizontal curve which you say you already have,MC or you asking to calculate the coordinates of the Radius, If you have the PI coors.,the BC coors., the MC coors and the EC coors, but all you have is a radius length. and you want to know the Radius coordinates. I will send you file that has the parts of a curve and all the equations to them. It also has a lot more on the math you need to calculate the coordinates. Calculating stations on a curve is another story. But this will get you started and you can go from there.

Download Survey Documents-Members Only
Was this resource helpful? Show your appreciation with a comment below. 

Donations are how we exist and grow for the surveying community worldwide.

Thank you very much for your fast reply.  I wanted the coordinates of center of the circle of which my horizontal curve is a sector of the circle. And because it is a part of alignment and my road program can provide me BC, MC EC coordinates or any chainage interval. I wanted it so i create my own excel spreadsheet which can do such calculation, so that other field member can calculate necessary coordinates of different chainage interval of a alignment and also the WCB(Whole circle bearing) at any point of the alignment. 

 Thank you, Nitesh,

 The equations in the file I sent you are Algebraic Notation Logic, this is the math most everyone uses.

 I use Reverse Polish Notation Logic, manly use in Hp calculators, there are a few more that use this notation and some computers and some surveying devices. There are many Horiz. Curve programs for these calculators, you can also write and store equations in them in a equation library, that can be used just like programs. If you like to read  more about calculating curves Old school and modern calculations,  and more about HP calculators then read these two discussion. They contain more material than just curves so you will have to search to find the curve references, But you may enjoy reading all of it. There is a lot of good information on a lot of different material and programs for the HP calculators.

 There are several ways to calculate coordinates to a Radius using programs or not. Both these discussion go over each solving angles ,dist. or coors. plus what you have already.

http://landsurveyorsunited.com/forum/topics/once-upon-a-time

http://landsurveyorsunited.com/forum/topics/the-little-big-calculat...

RSS

Where Thousands of Professional Land Surveyors, Students of Surveying and Educators are United through Collaborative Knowledge and Purpose.

Tools,Apps and Quick Guides

Surveyor Community Hubs For World Regions

Surveying Hubs For US States

Social Support For Equipment

Surveying Photos by Tag

Surveying Videos by Tag

+LandSurveyorsUnitedon Google+

Survey Earth in a Day 7

Surveyor Birthdays

© 2018   © Created by Land Surveyors United   Powered by

Badges  |  Contact LSU  |  Privacy Policy  |  Terms of Service