AutoCAD Site Boundry

[Will Haug]

For the life of me I can't figure out how to plot this design in autoCAD it's an assignment for class that I've tried but I can't seem to get the commands to plot correctly. If anyone could help with the plot points you'd use to get this to come out properly that'd be great.

[BIGAL]

What is the question ? Dim Aligned ? Dim Angular ?

[eldon]

One would think that it is quite simple to enter relative polar coordinates - but AutoCAD has a failing.

 

In the expression  '@length<angle'  the length is relative to the starting point of the line, but the angle is NOT relative to the previous line. It is the angle measured from the positive x axis in an anti-clockwise direction, so it is always an absolute angle rather than a relative angle.

 

So to draw your figure, you have to do a bit of maths first, and work out what the angle of each line should be. So the angle of the 116'-7" line is 31° etc., etc

 

Or you separate the commands by drawing the line in a known direction and then rotating it.

[tombu]

I'd draw the 141'-2" with Ortho on then use Rotate + Copy with the given angles then Lengthen to the given lengths for each of the other sides.

[eldon]

As you can see, there is no unique way of drawing your figure. Experience with AutoCAD will give you multiple methods, but you have to do each one to see which works for you.

 

As this is a class assignment, do not expect the figure to close perfectly.

 

This appears to be a site boundary, and as such the angles would be measured much more accurately. But entering angles in degrees, minutes and seconds is fiddly and so whole degree angles are preferred in class. Also the lengths would be measured more accurately.

 

What you could do is to check the sum of the interior angles to see whether that is geometrically correct.