Drawing lines using bearings

[Henryjohn]

Hi fellow cad users,

I have tried unsuccessfully to draw lines using bearings as a surveyor draws them.

I have seen a number of posts here and on the web, but they relate to northern and easting’s, but as you can see on the attached PDF from a surveyor they have used only bearings.

I’m not a surveyor, my background is mechanical so this is all new to me.

Please be specific with your answer in regards to what units and settings I may need to change in order to draw using these bearings.

I’m using Autocad 2012, and the attached PDF relates to some blocks of land in Australia (just in case that makes a difference in the settings)

Regards

Henry

bearings.pdf

[BIGAL]

pretty simple

 

Units direction clockwise, 0 is North, entry dd,mmss

 

Now eg LINE @100

[Organic]

I've never seen chainages on an ident plan like that before although the plan appears to have all of the info you will require. It looks like a plan that is confused as to whether it is supposed to be an ident plan or a deposited plan.

 

Draw a line (or polyline):

> p

> @40.84

 

will draw a line of 40.84m length on bearing 291 degrees 49' 10". The @ symbol does it relative to the point you started the line from.

 

Using the above method should allow you to put in all the bdy info.

 

CBOND F means Colorbond fence. Bk means brick.

 

Your easements legend and table of short lines must be on sheet 1 I assume.

[ReMark]

If there is no direction indicated (ex. - NE for northeast) how can it be called a bearing?

[eldon]

If there is no direction indicated (ex. - NE for northeast) how can it be called a bearing?

 

Because all the angles start from North and go clockwise. It should more properly be called Whole Circle Bearing, but as ever, some say just the last word.

 

Using this system, there is no need to supplement the bearings with letters.

[ReMark]

eldon: Yep, seems you caught me on this once before (Whole Circle Bearing) as I now recall. My bad.

 

I've only seen that depicted twice and both times it was here on CADTutor.

[Henryjohn]

Thanks to everyone.....

I wasn't too far off the solution, but something wasn't quite right.

You guys just just gave me that extra bit on info to make it work.

 

Thanks again.

Henry

[BIGAL]

For any one else come down to AUS thats the way we do it whole circle brgs.