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Chris Rice
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Oct 20, 2014
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Unknown Hometown
· Joined Jan 2013
· Points: 55
I'm going to build a campus board set up and have a 10.5' ceiling height to work with. Considering a 15 degree angle - how long a 2x6 will I need to make this. It's been nearly 50 years since HS math class and I forget how to figure it. Any help from your smart young wizards appreciated.
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FrankPS
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Oct 20, 2014
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Atascadero, CA
· Joined Nov 2009
· Points: 276
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Martin le Roux
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Oct 20, 2014
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Superior, CO
· Joined Jul 2003
· Points: 401
(Edited earlier post. Too quick off the mark!) 10.5' / cos(15 degrees) = 10.5' / 0.966 = 10.87'
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Chris Rice
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Oct 20, 2014
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Unknown Hometown
· Joined Jan 2013
· Points: 55
Martin I think that's backwards somehow. The board is going to have to be longer than 10.5' - do you mean longer by that amount? That sounds like how far out the top of the board might stick out? Sorry - I posted after only the first answer.
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Laine Christman
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Oct 20, 2014
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Reno, NV
· Joined Dec 2008
· Points: 1,305
This ought to do it, Chris
http://www.calculator.net/triangle-calculator.html?vc=90&vx=&vy=10.5&va=&vz=&vb=15&angleunits=d&x=47&y=7
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Chris Rice
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Oct 20, 2014
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Unknown Hometown
· Joined Jan 2013
· Points: 55
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marty funkhouser
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Oct 20, 2014
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Unknown Hometown
· Joined Dec 2007
· Points: 20
There are three types of people in this world. Those that are good at math and those that are not.
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Chris Rice
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Oct 20, 2014
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Unknown Hometown
· Joined Jan 2013
· Points: 55
marty funkhouser wrote:There are three types of people in this world. Those that are good at math and those that are not. And I'm pretty sure in which camp I fall :) Maybe I fall in 2 out of 3 :).
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Ray Lovestead
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Oct 20, 2014
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Boulder, CO
· Joined Jan 2008
· Points: 108
You guys are hilarious. If it is only a 15deg angle, its only just barely longer than the 10.5'. Martin is correct at 10.87'.
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MarcHL
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Oct 20, 2014
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Unknown Hometown
· Joined May 2014
· Points: 0
Ask the salesperson at Home Depot where to find the 2"x6"x10 and 7/8' pile....I advise you to pick up 12 footers. Use the scrap for rungs. Cheers
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Jeremy B.
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Oct 20, 2014
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Unknown Hometown
· Joined May 2013
· Points: 0
To be utterly pedantic, the 10.87' board will need one end mitered in order to fit. If you miter both ends, so as to make each end perfectly flush with both floor and ceiling, you will need to start with a board slightly longer than 10.87'. (Assuming your ceiling is exactly 10.5' high; how confident are you of that?)
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Chris Rice
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Oct 20, 2014
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Unknown Hometown
· Joined Jan 2013
· Points: 55
Jeremy B. wrote:To be utterly pedantic, the 10.87' board will need one end mitered in order to fit. If you miter both ends, so as to make each end perfectly flush with both floor and ceiling, you will need to start with a board slightly longer than 10.87'. (Assuming your ceiling is exactly 10.5' high; how confident are you of that?) I have some "wiggle room" with the height - it's a pole building and the ceiling is open in places - the 10.5' number is a choice more than a requirement.
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slim
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Oct 21, 2014
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Unknown Hometown
· Joined Dec 2004
· Points: 1,103
Jeremy B. wrote:To be utterly pedantic, the 10.87' board will need one end mitered in order to fit. If you miter both ends, so as to make each end perfectly flush with both floor and ceiling, you will need to start with a board slightly longer than 10.87'. (Assuming your ceiling is exactly 10.5' high; how confident are you of that?) don't forget to subtract .125'/cos 15 for the header at the ceiling :)
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Mike Lane
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Oct 21, 2014
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AnCapistan
· Joined Jan 2006
· Points: 880
Good luck finding a tape measure that'll show you the .87"
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Greg D
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Oct 21, 2014
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Here
· Joined Apr 2006
· Points: 883
Mike Lane wrote: Good luck finding a tape measure that'll show you the .87" .87” also known as 7/8".
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FrankPS
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Oct 21, 2014
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Atascadero, CA
· Joined Nov 2009
· Points: 276
Greg D wrote: .87 also know as 7/8". I think the ".87" refers to a foot, not an inch. .87 of a foot = 10.44 inches. Or I could be wrong!
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dave v
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Oct 21, 2014
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Unknown Hometown
· Joined Dec 2007
· Points: 0
Beat me to it Frank - you are right. Also, very close to 10 7/16 inches.
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kenr
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Oct 21, 2014
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Unknown Hometown
· Joined Oct 2010
· Points: 16,608
marty funkhouser wrote:There are three types of people in this world. Those that are good at math and those that are not. actually there are two kinds of people in the world: - Those who think there are two kinds of people in the world.
- Those who don't.
- Those who can't count.
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Laine Christman
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Oct 21, 2014
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Reno, NV
· Joined Dec 2008
· Points: 1,305
kenr wrote: actually there are two kinds of people in the world: * Those who think there are two kinds of people in the world. * Those who don't. * Those who can't count. Sounds like someone's being a bit obtuse.
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Fleetwood Matt
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Oct 21, 2014
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Unknown Hometown
· Joined Apr 2006
· Points: 620
There are 10 kinds of people in the world: those who understand binary, and those who do not.
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Rframe
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Oct 21, 2014
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Post Falls, ID
· Joined Jul 2014
· Points: 55
Ask the Indian princess Sohcahtoa.
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