Dome calculator

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Dome calculator

Postby gene » Thu Feb 16, 2006 4:26 pm

The dome calculator located here is grate ! But I have a few questions . Are the answeres and values in feet? and volumes in cubic feet? http://www.monolithic.com/plan_design/calcs/
Also I am wondering about shallow domes . Like If I enter 30 dia and a 5 foot height I see a Radius of Curvature value of 25 . I dont quite get that . What would this dome look like ? I was hopeing for a thin-ish saucer shape like this ) But the 25 just dosen't fit in . It seems that the Radius of Curvature would be much larger, something like 100 with a compass point way below the floor line to span 30 ft and only 5 ft high. What am I not seeing? Thanks for any help .
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Postby Dave South » Thu Feb 16, 2006 10:25 pm

Thanks. We really like it, too.

A 30' diameter x 5' tall dome will have a 25' radius of curvature. That's a 50' diameter sphere. Or look at the dome as being 15' radius. It's a really big sphere (almost twice as large as the dome diameter).

The answers are in the value you input. If you say 30 x 15 it could mean inches, millimeters, feet, meters, miles, light years -- it doesn't care. So the output units are the same as the input units.
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Postby gizmodepot » Fri Feb 17, 2006 8:15 am

Gene

You got the answer right from the horse's mouth!!

DJ is David South Jr. VP of Monolithic and author of the dome calc program. He also programs the machine that cuts the sections for the monolithic airforms. I trust his calculator.


DJ really-- Light years!!! thats a lotta concrete!!!

I've included a "to scale" graphic of your 30 X 5 (kinda short!!) dome to visualize the solution. It's based on 25 radius sphere.

Image

Check these links for other shapes


Welcome to the group

Gizmodepot

http://www.monolithic.com/plan_design/shapes/


http://www.monolithic.com/plan_design/c ... index.html
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Postby gene » Fri Feb 17, 2006 8:40 am

AHHHhh.... I got it now, Radius as in half dia... I thought it was meaning like rounding a corner radius or doing some kind of arch .. Duhhh! ..
Thanks again !
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