Always wanted to get started in Autocad to make your own layout files?
This weeks tip gets you started in Autocad and this is an example of an easy way to create your first layout file.
In this weeks tip we will create a new file, import a pdf floor plan, place points and draw lines in AutoCad to export to your survey equipment.
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 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.
To determine what Floor Flatness and Levelness that is designed for your project
1. Go to your specifications
With electronic files it might look like something below, pending the type of job you could have a big or small spec book.
2. Then to Division 3 (concrete)
Click on the Div 03 spec.
3. Open up the Division 03 Spec Section
Once you open or click on the Div 03 spec, it will have multiple sections.
4. Look for Execution
You want to find the Execution section.
5. Under Execution you will find the FF/FL requirements
You might see multiple sections with FF/FL numbers under the different floor finishes ( trowel finish, float finish or slab on grade, slab on metal deck etc.) Look through the sections to find the finish type you are needing.
In this weeks tip we will walk through how to create an Excel production tracking tool. It's a great way for you to track units of production, create a graph that gives you or your subcontractor a visual letting them know if they are ahead or behind, it's a great scheduling tool thats simple to set up and start using.
Testing the Autopilot Orbit Mode
Autopilot has many flight modes, but in this weeks tip we test out the orbit mode, where you create a clockwise or counterclockwise flight plan. I set the flight path to miss the corner of the building allowing the Phantom at a lower height without any interruptions so it can focus on the POI thats marked on the map. Adjusting the radius and elevation during flight with the RC was also a nice feature. As with any third party apps taking extra cautions, reading through all training material (flight school) before attempting to fly is critical.
Construction How To's
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