topic Re: Draw a Degree, Min, Second Boundary Line in Modeling

Draw a Degree, Min, Second Boundary Line

Anonymous — Wed, 11 Mar 2009 00:39:30 GMT

Hi Guys,
I know this is embarrassing, I have been using Archicad for long times and I still don’t even know how to draw a line with Degree Second and Boundary!!! I want to know how to draw boundary lines from following Boundary info, those three lines all joint together become a triangle:

1. 55.18m (206 03' 0'')
2. 44.77m (326 11' 0'')
3. 50.34m (74 47' 0'')

Hope to get response from you all Master Archicad Users!!

Much thanks
Star

Re: Draw a Degree, Min, Second Boundary Line

Dwight — Wed, 11 Mar 2009 01:28:39 GMT

In Project Preferences> Working Units> Angle Unit> degrees, minutes, seconds

Polyline or connected line method

r55.18a206 03 0ENTER
r44.77a326 11 0ENTER
r50.34a74 47 0ENTER - but it does not close the triangle.

the spaces in my text are actual spaces you enter...

i get a 1m gap, so i must be doing something wrong. why don't you have mm accuracy in your dims?

Re: Draw a Degree, Min, Second Boundary Line

Anonymous — Wed, 11 Mar 2009 12:11:18 GMT

Althought you an do it as dwight, if youre doing a lot of these lines
For example in a lot subdivision plan and you need to write the "metes & bounds" , Theres a library part in "objects on line" that does exactly that.
It pays itself in a short time

Re: Draw a Degree, Min, Second Boundary Line

Anonymous — Wed, 11 Mar 2009 19:31:37 GMT

Hi Star

You already have the Cadimage object that does boundaries (go to Cadimage menu > Site and Massing Tools > Survey Boundary (Object) ), and should have the Quick Tips sheet which explains how to use it. And the input is exactly as Dwight says - distance, angle (with spaces between degrees, minutes and seconds).

Re: Draw a Degree, Min, Second Boundary Line

Anonymous — Sun, 15 Mar 2009 20:09:36 GMT

Hi Dwight, S2art and Jocontreras,
Thanks for your help. Yeah, I will try to use the Site tools today.
Last question, does project north has any effect on degree min sec input?? becasue, it seems different when compare with the survey drawing!!

Star

Re: Draw a Degree, Min, Second Boundary Line

Anonymous — Sun, 15 Mar 2009 22:25:08 GMT

Hi Star

Yes, first set your north correctly in 3D Projection Settings, click on the More Sun button.

Re: Draw a Degree, Min, Second Boundary Line

Anonymous — Sun, 15 Mar 2009 23:08:51 GMT

Hi S2art
Thanks so much! it works this time!!! ^o^

Cheers

Re: Draw a Degree, Min, Second Boundary Line

Link — Sun, 15 Mar 2009 23:20:52 GMT

Starchi wrote:
Hi Dwight, S2art and Jocontreras,
Thanks for your help. Yeah, I will try to use the Site tools today.
Last question, does project north has any effect on degree min sec input?? becasue, it seems different when compare with the survey drawing!!

Star

Project North shouldn't affect your angle input if it is set to degrees, minutes, seconds. It will only affect angles if the angle input is set to surveyor's units.

I have heard that either way, since Project North only allows for decimal degrees (accurate to just 2 decimal points) there can be a small discrepancy compared to an actual sureveyor's measurements.

Cheers,
Link.

Re: Draw a Degree, Min, Second Boundary Line

David Maudlin — Mon, 16 Mar 2009 13:45:37 GMT

Link wrote:
I have heard that either way, since Project North only allows for decimal degrees (accurate to just 2 decimal points) there can be a small discrepancy compared to an actual sureveyor's measurements.

Project North can accept numbers up to 4 decimal points, go to Project Preferences > Working Units & Levels > Angle & Text Size Decimals in Dialog Boxes: you have options 0 to 4. Even if this is set to less than 4, you can input a number with 4 decimal places for the Project North in the Sun dialog box and ArchiCAD will use the extra decimal places.

David

Re: Draw a Degree, Min, Second Boundary Line

Link — Mon, 16 Mar 2009 21:12:35 GMT

Yes, of course. Thanks David.

I'm no maths genius, but does four decimal places cover all possible surveyor measurements in degrees, minutes, seconds? I haven't actually tested it, but have had clients complain about such a shortcoming affecting closing boundaries.

Cheers,
Link.

Re: Draw a Degree, Min, Second Boundary Line

David Maudlin — Tue, 17 Mar 2009 12:52:25 GMT

Link:

When I divide (1/60)/60 (one degree divided by 60 minutes divided by 60 seconds), I get 0.000277, which is more than 0.0001, so the four decimal places should be more precise than the degrees, minutes, seconds. In the US, typically the property lines are given lengths to two decimal places of a foot, so the lack of accuracy may be more an issue of the lengths rather than the angles. (And in the surveys I receive of an existing house on a lot, the building perimeter and distances to the property lines are to one decimal place of a foot, which is a bit more than an inch.) On anything other than a rectangular lot, I can never get the property line perimeter to close (you gotta zoom way in), I think the surveyors geometric description is just not that fine.

Plus, you've got that whole thing about the earth being curved 😉.

David