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Smitty
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Join Date: Dec 2007
Location: Gulf Coast, USA
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ARC Measurement

06/20/2009 4:43 PM

I know we did this one before it was a long time ago.

I need a formula for calculating DC.

The arc of ADB will not be a semi circle, it will be shorter than 1/2 of a complete circle if that make sense.

Smitty

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edignan
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#1

Re: ARC measurement

06/20/2009 5:32 PM

Are you in luck!

Or I should ask, did it work last time?

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Smitty
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#2
In reply to #1

Re: ARC measurement

06/20/2009 7:24 PM

That's it.

All sorts fo ugly stuff happened about 6 months back when lightning hit us and ran through the so called surge protector. One of which I lost passwords, emails and other items not backed up.

That was the thread and i sorted through the suggestions to find which ones I actually understood. It needs to be just close, not dead on.

thanks you for keeping such impecable records.

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edignan
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#3
In reply to #2

Re: ARC measurement

06/20/2009 7:27 PM

Fastest search!

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XMech
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#4
In reply to #2

Re: ARC measurement

06/20/2009 9:32 PM

"It needs to be just close, not dead on."

I am not sure if you have gotten your answer, so here it is (again) IF your arc is a segment of a circle, that is, has a constant radius:

Taken from the Machinery's Handbook:

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edignan
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#5
In reply to #4

Re: ARC measurement

06/21/2009 8:15 AM

Now I know what MY next purchase is.

Very practical aspects of geometry!

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XMech
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#7
In reply to #5

Re: ARC measurement

06/21/2009 11:11 AM

For sure - the Machinery's Handbook is usually the first place I turn for quick, succinct answers to most of my mensuration problems - trigonometry, areas, volumes, .......

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Smitty
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#6
In reply to #4

Re: ARC measurement

06/21/2009 8:41 AM

All done and recorded.

Thank you.

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Smitty
Goodho
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Join Date: Jun 2008
Posts: 74
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#8
In reply to #4

Re: ARC measurement

07/02/2009 1:09 PM

Nice answer, I will have to get one of those machinery handbooks.
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