Hole drilling in wooden joists

roggabear · 2010-05-24T12:46:15+00:00

Hi, I'm preparing to run radiator pipes on the upper floor. The pipes will come up roughly in the middle of the house. To reach both ends where the radiators will be placed, I'll need to pass through all the floor joists (10 rafters + 9 intermediate joists) which are spaced at 600 mm on center and measure 45x220 mm. I will need to drill 2 holes in each beam, about 25-30 mm each, to accommodate the two pipes needed for supply and return. Is there a risk that by doing this, I will weaken the structural integrity? Where should I position the hole vertically, at the bottom, middle, or top? Should I try to place the hole near the support or far from it? Anything else I should consider? I'm a bit hesitant about drilling holes in my new nice floor beams :) but I guess it's the only way to solve this? That's how it's typically done, I presume.

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roggabear

#16

Member · stockholm

· 354 posts

29 May 2010 at 9:03 AM

roggabear

Member

stockholm
354 posts

29 May 2010 at 9:03 AM

Thanks for the info.
Was upstairs last night attaching/splicing with screws/glue on the underside of the beams. Now it's time to start screwing the floorboards

Hole drilling in wooden joists

roggabear

roggabear

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