# Thread: How to Draw This?

1. Registered forum members do not see this ad.

Originally Posted by basty
All dimensions were already provided in post #1.
Please show me where you provided the curve information for the arcs themselves. I must have missed that post.

2. Originally Posted by basty
All dimensions were already provided in post
That is patently not true, because I was able to draw four different sets of arcs without really trying

Originally Posted by basty
Can you show me how to draw these green arcs by graphical method like steven-g did in post
Only if you provide more information about what is the tangential directions at the ends or the arc radii. I have actually shown you the way to draw using the facilities provided by AutoCAD. In many instances this allows one to bypass the graphical constructions, and the ensuing tidying up.

3. basty: In your first post you asked about drawing a "continuous curve". Yet, in subsequent posts it appears we are talking about two distinctly different arcs. The only way I know of drawing the two curves and keeping them "continuous" would be via the Polyline command using the Arc option and subsequent options that apply only to arcs themselves like Center.

4. Originally Posted by ReMark
Please show me where you provided the curve information for the arcs themselves. I must have missed that post.
Do you mean you need the dimension of the arcs?

If so, I use a graphical method to draw these arcs, not by dimension.

5. Originally Posted by ReMark
basty: In your first post you asked about drawing a "continuous curve". Yet, in subsequent posts it appears we are talking about two distinctly different arcs. The only way I know of drawing the two curves and keeping them "continuous" would be via the Polyline command using the Arc option and subsequent options that apply only to arcs themselves like Center.
Yes, at first all I want is a "curve". But steven-g show me an "arcs" instead of a "curve". So I just follow him anyway. Btw, I don't know if a "curve" is same as "arc"?

6. Arc data is what I am looking for and what you failed to provided. Drawing the arcs graphically as you admit to doing means there could be any number of possible solutions depending on who is doing the drawing. You might as well ask us how to nail down jello.

7. Originally Posted by eldon
Only if you provide more information about what is the tangential directions at the ends or the arc radii. I have actually shown you the way to draw using the facilities provided by AutoCAD. In many instances this allows one to bypass the graphical constructions, and the ensuing tidying up.
What is "tangential directions" and "arc radii"? I am not familiar with these terms.
Can you show me by image?

8. You should already be familiar with such terms as radius, chord, length of curve, tangent, central angle, etc. as part of your schooling. Didn't you study such things as horizontal curves and reverse curves?

9. Originally Posted by ReMark
Arc data is what I am looking for and what you failed to provided. Drawing the arcs graphically as you admit to doing means there could be any number of possible solutions depending on who is doing the drawing. You might as well ask us how to nail down jello.
If you still want to know how I draw the arcs is such as below.

1. Draw a green circle with its center at point B and radius of B-C.
2. Draw the yellow circle with its center at point C and radius of B-C. The green circle and the yellow circle will intersect at point D.
3. Draw a circle with its center at point D and radius of C-D (or B-D).
4. Trim the circle in step 3 so that we get the blue arc.

See below pic for more detail.

10. Registered forum members do not see this ad.

Originally Posted by ReMark
You should already be familiar with such terms as radius, chord, length of curve, tangent, central angle, etc. as part of your schooling. Didn't you study such things as horizontal curves and reverse curves?
The one I already familiar is radius, chord, tangent, and central angle. I did learned how to find the length of a curve in calculus.

The "radii" term is not common and what I was thought is using a "radius", not "radii".

#### Posting Permissions

• You may not post new threads
• You may not post replies
• You may not post attachments
• You may not edit your posts