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- Need help drawing line with radius

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510 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'....

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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

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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.

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12-29-2012 12:06 PM in reply to:
JeffWVULT

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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.

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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

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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.

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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.

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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.

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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

Dyslexia is a permanent physical disability that cannot be seen.

Dyslexia is a permanent physical disability that cannot be seen.

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