AutoCAD 2007/2008/2009

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JeffWVULT
Posts: 21
Registered: ‎01-22-2008
Message 1 of 14 (542 Views)

Need help drawing line with radius

542 Views, 13 Replies
12-28-2012 10:01 PM

I haven't messed with Autocad for a while, so I'm trying to get my skills back. How do I draw this line? I tried using pline then arcs and then radius, but it doesn't work for me. It's a modification of a single, vertical line on the right. Thanks for all help.. Sorry the cell phone pics are horrible quality, they say R 6' and R 5'.... 

Distinguished Mentor
Moshe-A
Posts: 787
Registered: ‎09-14-2003
Message 2 of 14 (514 Views)

Re: Need help drawing line with radius

12-29-2012 08:31 AM in reply to: JeffWVULT

well Jeff,

 

One way of doing it is to draw the two vertical lines first and add the temporary

diagonal line where the arcs should be tangent than you do a FILLET

 

Moshe

 

 

 

 

Contributor
JeffWVULT
Posts: 21
Registered: ‎01-22-2008
Message 3 of 14 (506 Views)

Re: Need help drawing line with radius

12-29-2012 10:34 AM in reply to: JeffWVULT

Thanks so much for the reply. I tried this, and couldn't get it. The lines aren't meeting when I do the fillet. Any ideas why? I took a screenshot of it below.

*Expert Elite*
pendean
Posts: 23,364
Registered: ‎11-06-2003
Message 4 of 14 (497 Views)

Re: Need help drawing line with radius

12-29-2012 12:06 PM in reply to: JeffWVULT
You will need to draw Arcs (or circles) with those radii, position using the proper osnaps, then trim.
Or post that DWG for someone to actually use to work it out.
Dean Saadallah Blog | Facebook | Google+ | Twitter | PINS
Contributor
JeffWVULT
Posts: 21
Registered: ‎01-22-2008
Message 5 of 14 (482 Views)

Re: Need help drawing line with radius

12-30-2012 11:34 AM in reply to: JeffWVULT

OK, here is the dwg, please let me know how you did it. I'm trying to learn this stuff, thanks.

 

 

Distinguished Mentor
Moshe-A
Posts: 787
Registered: ‎09-14-2003
Message 6 of 14 (475 Views)

Re: Need help drawing line with radius

12-30-2012 02:55 PM in reply to: JeffWVULT

Jeff,

 

it's all about geometric...lets say we 'know' how to position the two circles

the bigger circle with R=6.0 and the smaller with R=5.0 that are meet at the tangent point (see the attched pdf)

this create a right angle triangle ABC where b=90 degrees.

 

with Pythagorean equation you could easily calculate the line AB which lead you to locate the smaller

circle radius (line BC)

 

from here you can continue by your own?

 

Moshe

 

Contributor
JeffWVULT
Posts: 21
Registered: ‎01-22-2008
Message 7 of 14 (443 Views)

Re: Need help drawing line with radius

12-31-2012 06:34 PM in reply to: JeffWVULT

I tried, and I'm still off just a little. I don't know what the problem is. I don't have a great understanding of geometry. Thanks for all the help.

Distinguished Mentor
Moshe-A
Posts: 787
Registered: ‎09-14-2003
Message 8 of 14 (432 Views)

Re: Need help drawing line with radius

01-01-2013 09:39 AM in reply to: JeffWVULT

edge AB = 9.8

position the two circles exectly as in my pdf and trim the extra curves.

 

Contributor
JeffWVULT
Posts: 21
Registered: ‎01-22-2008
Message 9 of 14 (426 Views)

Re: Need help drawing line with radius

01-01-2013 09:06 PM in reply to: JeffWVULT

Thanks for all the help. I was able to get it 100% right. Now I'm going to study the pdf again and hopefully learn from it.

*Expert Elite*
scot-65
Posts: 2,204
Registered: ‎12-11-2003
Message 10 of 14 (415 Views)

Re: Need help drawing line with radius

01-02-2013 04:09 PM in reply to: JeffWVULT

OFFSET the top vertical line to the right by 6 feet. I will assume the endpoint here is tangent.

Draw a 6' CIRCLE using this new line's endpoint as the center.

Now OFFSET this circle 5 feet.

OFFSET the bottom vertical line to the left 5 feet.

Where this new bottom vertical line meets the 11' radius circle, this will be the center of a new 5' CIRCLE.

You may need to extend or trim the bottom vertical line as needed to find the center point.

 

If the bottom vertical line is the tangent (starting point), reverse the procedure.

 
???

Scot-65
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