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Drilling holes in stair stringers? (Read 4366 times)
scotspark
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Re: Drilling holes in stair stringers?
Reply #5 - Feb 13th, 2012, 11:41pm
 
we always did them in centre of the triangle at each step.
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TIMBA-WOLF
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Re: Drilling holes in stair stringers?
Reply #4 - Feb 13th, 2012, 9:30pm
 
scotspark wrote on Feb 13th, 2012, 8:38pm:
done this loads of times

was all the rage up here a couple of years ago lol.

no problems


And too close to the nosing area, and over time if cheaper timber, i have seen loads start to split!!!  
(damned sparkies.... Grin Grin  but hey, you help keep us i work...LOL!!!!)

no closer than 40mm to a tread or nosing or to edge of stringer.... and its a safe spread....  basically you have to think along the lines of drilling joists etc....

in Parts of Canada, there was/is a set spec, a bit like the "Zones" in a bathroom... Zone 1 a complete NO NO.. etc etc ...

common sense really!!!
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scotspark
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Re: Drilling holes in stair stringers?
Reply #3 - Feb 13th, 2012, 8:38pm
 
done this loads of times

was all the rage up here a couple of years ago lol.

no problems
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Lectrician
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Re: Drilling holes in stair stringers?
Reply #2 - Feb 13th, 2012, 8:31pm
 
It is a standard off the shelf set of 13 tread stairs, typical closed set.  Fixed to wall on one side, currently open on the other from top to bottom, but to be filled in on the bottom half.  Holes would be central to the stringer
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Re: Drilling holes in stair stringers?
Reply #1 - Feb 13th, 2012, 5:13pm
 
Depends on where in the stringer, and how close to the top section, also how much weight are the stretchers taking....(ie, are they on an open plan staircase... weight top and bottom only..or are they fixed to a wall both sides at various intervals down the length of the stretchers:


oops, nearly forgot, what cross section are they!!
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« Last Edit: Feb 13th, 2012, 5:13pm by TIMBA-WOLF »  

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Drilling holes in stair stringers?
Feb 13th, 2012, 5:04pm
 
Customer has asked me to install some 20mm LED lights into the stair stringers, one for each step.

Is it wise to drill to a 20mm hole into the stringer on each step?
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