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Construction Layout: How to Establish Elevation

8/2/2018

7 Comments

 
There is a free course offered by Construct-Ed called Layout Part One: Establishing Elevations, its a free course that takes you through the whole process of understanding decimals to shooting elevations. There is also a quiz at the end, click this link Layout Part One: Establishing Elevations to start the course!
Set Up

•Set up tripod
•Set & level
•Find a benchmark
•Place grade Stick on benchmark
•Shoot grade stick to determine elevation above benchmark.
•Determine the height of your instrument (HI)  

To find your HI (height of Instrument)

Start from a benchmark-Known elevation point + measurement on grade stick
IE: benchmark 4320 + 5.80 (decimal Stick)
Your HI= 4325.80

If your building datum elevation is 4320 (which is equal to level one finish floor)

then 4320= 100.

If your HI is 4325.80 this equals 105.80, so you are 5.80 above finish floor.

If you are trying to establish elevation, lets say 105.00 on core walls for reference. Then you would shoot a mark on the wall (this is level with your instrument) and measure .80 (9-9/16”) below the mark to be at elevation 105.00.

Want more information on establishing grades:
​take me to Layout Part one 

Using a decimal stick is quicker to convert numbers vs. using feet and inches stick.
A cheap calculator
 and  to know decimals is all you need to make elevation layout a breeze.  (need inches to decimal converter: click here)

View around this SketchUp model to establish elevations with an auto-level. 

SketchUp example of elevation set up.








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7 Comments
Pepi crummer
7/13/2016 09:35:34 pm

Fantastic, for the men and women wanting to learn how to shoot elevations!

Reply
Pepi crummer
7/13/2016 09:36:51 pm

This is very easy to understand!

Reply
dejen
9/2/2016 01:18:48 am

Reply
Joy Butler link
5/1/2018 10:10:20 pm

I appreciate you helping me learn more about the elevation construction. I am being asked by my brother to assist him with their house renovation. He wants to elevate the front side of the house and wants an advice on how to. I will forward this article to him for an additional information.

Reply
Amanda Drew link
5/18/2018 02:28:37 pm

That's cool that your benchmark will start by adding the measure meant grade stick to the known elevation point. It'd be important to make sure that the building your making is at the right height and elevation. One way you could reach your HI would be to get some of those concrete tubes and set them up around the perimeter. You'd just need to find somewhere to get some from.

Reply
Edgar
5/18/2018 05:47:34 pm

Ver y good

Reply
Vanessa Blair link
5/31/2018 11:12:38 pm

My dad wants to add home elevation to our house to lessen the chance of water damaged during a storm. It was explained here that we are to first find the right height instrument that we'll be using. Furthermore, professionals have the right tools for the project, therefore, it's best to hire home elevation contractors.

Reply



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