[solved] Arcs

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slyde
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Location: Turnip City, Texas

[solved] Arcs

Postby slyde » Tue Dec 12, 2017 1:54 am

Hi Forum:

This isn't a QCAD-specific issue, just something I need help with. I don't understand how to draw this:

EXERCISE 3.jpg
EXERCISE 3.jpg (84.33 KiB) Viewed 59 times


That's a drawing another user here put out for me to try to draw. And this is what I ended up with:

Screenshot from 2017-12-11 18-44-52.png
Screenshot from 2017-12-11 18-44-52.png (10.56 KiB) Viewed 59 times


My arcs are way off. The only one I think I got right was the middle one (R35). I'm pretty good with math, but I can't figure this one out. The one day I skip school and I missed this lesson :D Will someone please point me in the right direction? Thanks.

Slyde
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Last edited by slyde on Tue Dec 12, 2017 3:56 am, edited 1 time in total.
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OS: Linux Mint 18.3 Sylvia [64-bit]
QCAD Pro 3.19.2.0 [64-bit]

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Husky
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Re: Arcs

Postby Husky » Tue Dec 12, 2017 3:07 am

With this given information I would use the Round (RN) tool ....

Center radius = 35
inside / outside measurements are known ø26/ø40
So, launch the Round Tool, the outside radius (1) for the pipe needs to be 35+20 (put this mathematical expression directly in the Radius field .... or search for your Pocket-calculator .... :wink: )
use then horizontal / vertical entities to built the round ...

Husky-2017.12.11-05.png
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slyde
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Re: Arcs

Postby slyde » Tue Dec 12, 2017 3:35 am

Thanks, Husky. Like you said to me, I drew out my vertical and horizontal lines of the pipe's OD and ID, then used the Round tool. But I didn't know how to formulate the curves (arcs). But I now see what you're talking about.

35+20
35+13
35-13
35-20

Screenshot from 2017-12-11 21-49-48.png
Screenshot from 2017-12-11 21-49-48.png (10.69 KiB) Viewed 47 times


Sure do appreciate you.
Last edited by slyde on Tue Dec 12, 2017 4:51 am, edited 1 time in total.
Look! It's a bird. No! It's a plane! NO! It's QCAD hotkeys...faster than a possum falling out of a tree!!

OS: Linux Mint 18.3 Sylvia [64-bit]
QCAD Pro 3.19.2.0 [64-bit]

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Husky
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Re: [solved] Arcs

Postby Husky » Tue Dec 12, 2017 4:35 am

Looks good! :wink:
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