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Attempting to create linetypes for DOT drawings...


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Posted

I am trying to create a group of linetypes that match the dot's requirements for roadway striping. The linetypes have to be of a certain size to comform, such as a 10' Stripe with a 30' Spacing between them. I tried to make one but the beginning and ending stripes were longer or shorter depending on the overall lines length. Any help?

Posted

Can you post the custom line code that you used to create the linetype? The custom coding would dictate how ACAD generates the line.

 

Also, make sure you are using polylines and that the linetype generation is set to Enabled.

Posted

The line type you want just requires the correct pattern you may need to reset the line type scale or else change the numbers so its correct for a scale of 1

this is equal spacing

*EQUAL,_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

A,0.30,-0.30

 

Something like this is what you want

*LANE,____ _____ ____

A,3.00,-9.00

Posted

I recreated the linetype this morning with the same results. I used the mkltype command in AutoCAD to make the .lin file, however after using the linetype noticed it wasn't to scale so I edited it in notepad. The scale is now correct for the intermediate dashes between the beginning and ending of the line but the beginning and end of the line are still longer or shorter, depending on the length of the line. I have posted a .pdf (not to scale) of the problem also. The top line is the line I used to create the .lin file, the second line is a line using the .lin and the third line is a polyline using the .lin. I will also post the .lin file to this reply also.

 

 

edit: plinegen is set to 1

10-30.zip

Posted
The scale is now correct for the intermediate dashes between the beginning and ending of the line but the beginning and end of the line are still longer or shorter, depending on the length of the line.

 

That is how AutoCAD draws lines. With A-type alignment, AutoCAD guarantees that the endpoints of lines and arcs start and stop with a dash. So these variable end sections allow the rest of the line to be to scale.

 

You could be clever and arrange wipeouts to conceal these end sections or draw each dash as a separate line, or try and think up another way. You will have to find a way to outwit AutoCAD :shock:

Posted

Do you have linetype generation enabled?

Posted
Do you have linetype generation enabled?

 

Yeah, I have plinegen set to 1.

 

You could be clever and arrange wipeouts to conceal these end sections or draw each dash as a separate line, or try and think up another way. You will have to find a way to outwit AutoCAD

 

If thats the case I will just keep doing it the old way. I was trying to speed up the process a little by creating the linetype that was scaled properly already as long as the ltscale was set properly. The wipeout I could see being a problem because it could possible cover up dimensions or alignment...or anything else for that matter.

Posted

The only way to get 100% line length every time is to draw individual lines this gets around the start end Acad problem the draw back though is exactly that lots of little lines eg 32.5m lines 6m gap 3m line gives 4 full segments but no line on end is this acceptable ? Theres lots of examples here of how to repeat lines for two point pick do a search if you cant find post again.

Posted
Ummm... Having been an FDOT Civil 3D Beta tester for the past couple of years; why don't you just download and install the Beta and pilfer the .LIN files installed???

 

We just installed 2012 yesterday along with this FDOT install, I will check those out over the next few days. I have played around in the FDOT addition a little today but have a lot to learn on that product also.

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