Formula For Figuring Balusters? - General Discussion - Contractor Talk

Formula For Figuring Balusters?

 
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Old 04-05-2014, 07:18 AM   #1
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Formula For Figuring Balusters?


As an estimator I'm increasingly figuring stair parts and balusters. I really need to be accurate so would one of you guru's give me your formula? For ex: Lets say I have a 91" run wall to Newel, and I have 9/16" round balusters. Thanks in advance.
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Old 04-05-2014, 10:13 AM   #2
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Re: Formula For Figuring Balusters?


91/ (4 + .5625) is your number of spaces if your spacing between is 4". Round result down because you will have one less baluster than space.

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Old 04-05-2014, 10:15 AM   #3
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Re: Formula For Figuring Balusters?


Buildcalc
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Old 04-05-2014, 10:37 AM   #4
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Re: Formula For Figuring Balusters?


did he really just ask this question hahaha.
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Old 04-05-2014, 10:51 AM   #5
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Re: Formula For Figuring Balusters?


Quote:
Originally Posted by rotarex View Post
did he really just ask this question hahaha.
Yes I did. Balusters vary in width from wood to iron. I easily recognize the max 4" spacing. I'm simply trying to get a formula that takes into acct the baluster width and gives eq spacing to the newel. Why act like an ass?
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Old 04-05-2014, 10:55 AM   #6
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Re: Formula For Figuring Balusters?


Well it is pretty simple math.
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Old 04-05-2014, 10:59 AM   #7
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Re: Formula For Figuring Balusters?


Quote:
Originally Posted by Golden view View Post
91/ (4 + .5625) is your number of spaces if your spacing between is 4". Round result down because you will have one less baluster than space.
Almost. The formula is (run + width of one baluster) divided by (maximum spacing + the width of one baluster).
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Old 04-05-2014, 10:59 AM   #8
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Re: Formula For Figuring Balusters?


Quote:
Originally Posted by Golden view View Post
91/ (4 + .5625) is your number of spaces if your spacing between is 4". Round result down because you will have one less baluster than space.
So theres 19 spaces?
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Old 04-05-2014, 11:01 AM   #9
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Re: Formula For Figuring Balusters?


Quote:
Originally Posted by one cut View Post
Almost. The formula is (run + width of one baluster) divided by (maximum spacing + the width of one baluster).
This is exactly what I was asking. Thank you One Cut.
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Old 04-05-2014, 11:01 AM   #10
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Re: Formula For Figuring Balusters?


Im seriously thinking this website is becoming a DIY site, so many PC's on here
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Old 04-05-2014, 11:05 AM   #11
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Re: Formula For Figuring Balusters?


Quote:
Originally Posted by rotarex View Post
Im seriously thinking this website is becoming a DIY site, so many PC's on here
What is your problem. As a professional I asked a stair formula to other professionals.
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Old 04-05-2014, 11:05 AM   #12
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Re: Formula For Figuring Balusters?


I was never able to correctly figure out spacing.

Build calc makes me look like I know what I'm doing lol



Formula for figuring balusters?-image-629067392.jpg



Formula for figuring balusters?-image-4148010581.jpg
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Old 04-05-2014, 11:09 AM   #13
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Re: Formula For Figuring Balusters?


Here's what it figures for you



Formula for figuring balusters?-image-3109393781.jpg



Formula for figuring balusters?-image-1176245742.jpg
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Old 04-05-2014, 11:16 AM   #14
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Re: Formula For Figuring Balusters?


Quote:
Originally Posted by one cut View Post
Almost. The formula is (run + width of one baluster) divided by (maximum spacing + the width of one baluster).
At the risk of getting exposed.....is this correct?
91"+ .5625 (bal width)=91.5625 divided by 4.5625=20.06
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Old 04-05-2014, 11:22 AM   #15
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Re: Formula For Figuring Balusters?


Quote:
Originally Posted by BCConstruction View Post
Here's what it figures for you



Attachment 110595



Attachment 110596
That's pretty awesome BC. Thanks. Even gives the centers for layout.
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Old 04-05-2014, 12:02 PM   #16
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Re: Formula For Figuring Balusters?


Quote:
Originally Posted by one cut View Post
Almost. The formula is (run + width of one baluster) divided by (maximum spacing + the width of one baluster).
91.5625/4.5625 =20.068. Round up to 21.
Then, 91.5625/21= 4.36 which is roughly 4 3/8".
Now just hook the end of the run and lay out every 4 3/8" with the x to the left, just like laying out wall plates.
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Old 04-05-2014, 12:05 PM   #17
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Re: Formula For Figuring Balusters?


There is nothing worse than being one spindle short of a staircase.
Literally and figurativaly.
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Old 04-05-2014, 01:38 PM   #18
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Re: Formula For Figuring Balusters?


Repetitive member spacing equation

(Run +width of one member) / (maximum spacing + width of one member) then round up. = number of spaces
Then. (Run + width of one member) / number of spaces = (space + width of one member)
Number of spaces - 1 = number of members


Last edited by one cut; 04-05-2014 at 01:43 PM. Reason: Add title
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Old 04-05-2014, 01:44 PM   #19
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Re: Formula For Figuring Balusters?


Quote:
Originally Posted by B.D.R. View Post
one spindle short of a staircase.
That's a great quote
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Old 04-05-2014, 03:10 PM   #20
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Re: Formula For Figuring Balusters?


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