Tag Archives: Datum Markers

Connecting Sea Level & Morphs

Today I have been working on translating a .dwg survey into existing conditions for neighboring buildings for a remodel. The survey locates windows for neighboring properties, giving sill height, head height, and window width only. All dimensions are relative to sea level.

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To locate these windows correctly, I first set the Altitude (Sea Level) properly.From here I could place temporary morph lines in plan to locate center line of windows and other building features.

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Then, in the morph element settings, I set the height relative to Sea Level, and matched the sill and head height described in the survey.

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From this point, it was just a matter of matching and stretching the windows to the morph lines in 3d or elevation.

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Leveraging the full power of BIM yields quick & coordinated results:

We have many great schedules at our finger tips, already created and waiting in our template.  Remember to leverage the use and creation of new schedules as documenting tools throughout the design and documenting process.  The images below show a sample foundation plan, possible 3d document associated with it.  These views were mocked up and saved in about 3 minutes using our template favorites.

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The question was posed today; how can I quickly reference these elevation markers in a list format with out the need to manage and update duplicate information?  The quick answer is with a schedule.  The schedule below will become available as part of our new template for those who need to list off any spot elevations on plan, elevation or 3d views.

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Where do I start when I want to schedule something?

I know I have discussed this before, both in person and on other blog posts, but like most good BIM workflow concepts things stem from the questions “what should be 2d and what should be 3d?”

The answer is always that if it shows up more than once it should probably be modeled.  In the above case, we have a simple spot elevation tag or datum.  This could easily be shown as a 2d symbol on the floor plan, but then the text is in constant need of babysitting and updating.  If we use the readily available 3d marker we can place it in the 3d view, review its location and contents in the 2d views. As a bonus we can scroll through a schedule list to confirm that all datum markers (and consequently the objects they are placed to) are in the right place.  Adding this little bit of additional information to your model helps ensure the level of precision is where it needs to be as well as opening up a huge range of documenting possibilities with little or no additional manual coordination.