# Thread: Survey bearing distance in revit

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## Survey bearing distance in revit

Somebody can explian the logics behind revit input and survey input of bearing distance?
thanks

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## Re: Survey bearing distance in revit

Try it again and follow the bearings and dimensions around a the circle. Your first line and second line back on one another and the last two are going the same direction the way you typed them in the table. Perhaps you didn't notice the direction of the second N S E W after the angle.

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## Re: Survey bearing distance in revit

I did try several times but no matter where I start or the direction of the circle I choose I can't do Revit to draw or tag the same direction as the survey. I make the property lines to close and draw correctly but the tags will read different from the survey.
I am really confuse. Thanks for your help anyway.

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## Re: Survey bearing distance in revit

Hold on. don't give up I'll do it and post the table back in a minute

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## Re: Survey bearing distance in revit

I started in the upper left and went around

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## Re: Survey bearing distance in revit

Thanks Chirs for the time you are taking to help me!
I am Attaching a image with some comments and that is what I don't understand.

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## Re: Survey bearing distance in revit

Be careful with surveys! In my experience they often have misleading or erroneous information. My pet peeve is the numbers. Usually they are rounded to 2 decimal places, which on some sites is not enough to reconstruct the geometry accurately. I have had licensed surveys that could not be made to close. On the Freedom Tower we went to 12 decimal places.

Also, do not decimalize the angles. Degrees, minutes and seconds are much more accurate. You are lucky to have a site with two orthogonal sides at 90 degrees. Most of the sites we deal with have no regular geometry at all.

Mother Nature abhors a straight line.

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## Re: Survey bearing distance in revit

Check out this tutorial on Revit property lines I wrote a little while back...

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## Re: Survey bearing distance in revit

I've been away. Here's the skinny. It doesn't matter east or west after a 0 or 90 degree line. If you imagine you are walking the property line and you go marching along to the north 91 feet with a variance of zero degrees to the east. It is the same as a variance of zero degrees to the west.

I always think of the bearing as face the first direction and turn that many degrees to the second direction i.e N 45 E clockwise N 45 W counterclockwise.

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## Re: Survey bearing distance in revit

Thanks guys for all your help.
Scott great post. I just wonder if Revit should not be aware of this difference between the way surveyors describe property and the way Revit input data? The work around is great but should be easier don't you think so?

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