Drilling through log sill

Chronaus · 2017-02-21T16:42:38+00:00

I am installing new plumbing in our house from 1920. The structure of the house consists of approximately 7 cm thick vertical plank walls and a timber sill with a dimension of 14x14 cm. I now need to make a 75 mm hole through the timber sill to install plumbing from an extension to the main line located under the original house. Since the foundation consists of 1 m thick granite blocks, I cannot run the pipe through the foundation and am forced to run it through the sill. My question is how can I best do this without causing settlement in that part of the house due to a weakened sill. My thought is to run the pipe under one of the doors since the vertical load should be the least there. However, complicating the issue is that the sill under the door is not fully flush with the granite foundation but only rests on a approximately 15 cm long ridge in the stone. Should I place the hole at position number 1 or 2 according to the image? How should I reinforce the beam? Nail plates with a 75 mm hole in the middle on each side? Grateful for answers!

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SBH

#16

Anonymous

2 Mar 2017 at 7:28 PM

SBH

Anonymous

2 Mar 2017 at 7:28 PM

AG A said:
A very dumb and dangerous rule.
There are plenty of load-bearing elements that need to be reinforced long before 50% has been removed.

this particular hole will be around 50%

Drilling through log sill

SBH

SBH

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