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Formulas That Work

Formulas That Work is a surveyor support group for sharing common or not so common calculation shortcuts and formulas for survey data calculations

Group Forum or Related Website: http://bit.ly/surveying-formulas
Members: 63
Latest Activity: Jul 14

Formulas That Work and Surveying Calculations Discussion Group

Share and discuss surveying calculation methods and formulas for finding solutions in the field.

Have a formula you'd like to share?

Start a new discussion, give your formula a title and describe what the formula allows you to calculate and a few situations when you have found your formula to be valuable in the field...

Surveying Community Forum Discussions By Category ▿

How to Square Any Two-Digit Number In Your Head

Started by Survenator. Last reply by Arnel M. Domag Jul 10, 2014. 2 Replies

Land surveyors are constantly crunching numbers in their head.  But if you are like me, math is "work" part of surveying.Square Any Two-Digit Number In Your HeadTo square any two-digit number X,…Read more →

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Subject Tags: squared, surveyors, how-to, trick, numbers

Levelling Calculations made easy - Rise and Fall Method

Started by Rolita Rode La cock. Last reply by Ziad H. Alian Jul 6, 2014. 3 Replies

I have drawn up a spreadsheet explaining how to do the basic calculatuions for the rise and fall method of leveling my surveying students who make use of it, always find their practical and theory…Read more →

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Subject Tags: rise, spreadsheet, method, leveling, fall

Traverse calculation Including a Direction sheet

Started by Rolita Rode La cock. Last reply by LSU Justin Aug 8, 2013. 2 Replies

Traverse Calculations Sheet and DirectionsThis is…Read more →

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Subject Tags: coordinates, direction, traverse

Surveying formulas

Started by Brian Gay. Last reply by Jim Crume P.L.S., M.S., CFedS Aug 8, 2013. 2 Replies

I am a rodman and i have three years of land surveying exp. but i am now doing industrial surveying work and next year i want to go retake my cst level 2 test. What i am wondering is there a easier…Read more →

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Subject Tags: cst, rodman, formulas, angles

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Comments Welcome Surveyor!   Please Sign in or register to continue.

Reply by Mark Sidler on July 13, 2015 at 9:11pm

Greetings.  

Your efforts might be helped by simple yet dynamic visual Trigonometry and Geometry Software for Land Surveying Calculations and Coordinate Geometry.

Down load a free version of DC_Survey from 

www.dc-survey-software.com

Let me know if this software helps.

Marcus

dcsurvey422@gmail.com

Reply by YASIN MALIK on January 16, 2012 at 2:58am

horizontal curve calculation sheet 

Dear friend find attach horizontal curve calculation use full sheet.

Reply by LSU Justin on April 12, 2011 at 11:41pm
you are the MAN Donald..thanks for sharing this with us
Reply by Donald E Best on April 11, 2011 at 11:44pm

Large paved areas like shopping malls and Walmart parking lots are a surveyor's night mare in terms of  fine sub-grading and ABC blue tops. After the rough grading process and catch basins and curbs on islands have been installed, the fine grading of the sub-base and ABC are a calculation-time consuming process. There is no need for it to be. The trick of this calculation formula is there isn't any calc's necessary---REALLY! This is a method I have used for 15 years even though my LS boss once said in shock "You can't do that"----so much for the dumb boss! Here is how it works. Once you understand it you will see it can be used to stake curbs and pipe lines also. There are a lot of tricks you will learn about it also once you start using it. I'm going to give you a simple example of use: Let's say we want to blue top ABC from a drop inlet drain over to a curb line 60 feet away. Take your self leveling level and set it up on the  near edge of the drop inlet to the line you intend to stake. Align two of the leveling screws 90 degrees to the line your staking. Level the instrument. Let's assume the paving thickness is 6 inches and curb height is 6 inches. Take your LINKER ROD and unlock the tape. Set the rod next to your level eye end and set the RED X  5 tenths (6 inches paving thickness) above it. Lock the LINKER ROD tape. Now have your rodman take the LINKER over to the curb and set the rod on top of the curb. Focus on the rod and look for the RED X. Move ONLY the leveling screw (the third screw) on the stake line. Notice each time you move it up towards the RED X it will relevel. After a time it will "STICK"and you continue to screw it upwards until the cross hair is on 1 foot below the RED X (6 inches of curb and 6 inches paving). You have successfully raised the blue top grade line to "EYE" level. Now have the rodman walk on the line towards the insturment stopping wherever you want a blue top stake. Look for the red x noting how much your rod reading is above or below it. That is your cut or fill or how much you need to move the stake up or down to bring it to grade. Put as many stakes in as you want---no calculations. Move to another location and do it all over again. You will grade a very crazy paving surface with little or no effort. Have fun. Don Best. 

 

 

Reply by LSU Justin on April 5, 2011 at 1:05am
why won't anyone in this group start a new discussion? all of these comments would become a lot more helpful within searchable discussions...
Reply by ePalmetto on April 3, 2011 at 2:27pm
not sure what you mean by "not enough space to present"  because you can upload presentations, videos, graphics etc.
Reply by Arnel M. Domag on April 3, 2011 at 9:02am

@Saleem: I guess the space this venue provides is not enough to discuss how to do data reduction using Excel. In addition, it requires some graphic presentation to significanlty reduce the learning curve. Cheers..

Reply by Saleem javed ansari on March 21, 2011 at 6:33am

all  lsu member please tell me how can adjust the level and coordinate in excell. thank u

Reply by Arnel M. Domag on March 18, 2011 at 7:51pm

Sometimes we are prompted to relate degree values to slope values in the field. Usually, our instrument only provide as degree values for vertical angles. How about if you're asked for a slope value corresponding to a given measured degree value? Just hit the tan function button in your calculator for that degree value and get the corresponding slope value.

Reply by Scott D. Warner, PLS on March 17, 2011 at 10:17pm

A good base for understanding the triangle, the simplest polygon, which is, in the main, the most important to the Professional Land Surveyor, is the foundation of all other calculations.
 

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