Moonshine Posted April 9 Posted April 9 I was on site yesterday and saw a standard i joist, but with a notch taken out to allow a support beam. Is this allowed and done by the I joist manufacturer, or done on site? Seems strange to be cutting into the main beams of the I joist.
nod Posted April 9 Posted April 9 NO Its really bad The manufacturer even give the distance and size for holes for pipes and wires
Nickfromwales Posted April 9 Posted April 9 I would confirm with who cut them, and if they were sized / spec'd / designed for this application. If so, then no issue, if not, whoever cut them is facing a feckin big bill... To support from underneath you'd fit noggins of full depth, solid timber, or off-cuts of the same profile I beam. I've never seen this done on any site I've ever been on, and that more than a few! Time to ask some awkward questions, but start at the manufacturer and designer first, then move on to the fitters. Good luck, and hopefully it is intentional / allowed for.
MPH243 Posted April 9 Posted April 9 I was given distance from end,hole size and other specs from the manufacturer for ours. But that is a very neat cut for on site almost looks like its been routered out 1
Nickfromwales Posted April 9 Posted April 9 33 minutes ago, MPH243 said: I was given distance from end,hole size and other specs from the manufacturer for ours. But that is a very neat cut for on site almost looks like its been routered out That’s my thoughts. Looks to be uniform and intentional, eg by design in manufacture. We shall soon find out!
ProDave Posted April 9 Posted April 9 What is that "support beam" supporting? It looks too tiny to be doing anything as a "beam"
saveasteading Posted April 9 Posted April 9 It's probably alright. The bending stresses are nil, or close, at the end. Check that it is official though, not a whim by the fitter.
Moonshine Posted April 10 Author Posted April 10 9 hours ago, Nickfromwales said: I would confirm with who cut them, and if they were sized / spec'd / designed for this application. If so, then no issue, if not, whoever cut them is facing a feckin big bill... To support from underneath you'd fit noggins of full depth, solid timber, or off-cuts of the same profile I beam. I've never seen this done on any site I've ever been on, and that more than a few! Time to ask some awkward questions, but start at the manufacturer and designer first, then move on to the fitters. Good luck, and hopefully it is intentional / allowed for. Cheers Nick, just to be clear it's not my site but one a visited for work related reason's. I have been to a lot of sites too and have never seen this. It is a neat hole and that what made me think of the manufacturer. May ask the SM about it. 1
Nickfromwales Posted April 10 Posted April 10 1 hour ago, Moonshine said: Cheers Nick, just to be clear it's not my site but one a visited for work related reason's. I have been to a lot of sites too and have never seen this. It is a neat hole and that what made me think of the manufacturer. May ask the SM about it. Ok, thanks for that input. I guess I’ll stop mixing up this vat of wood chip, sawdust and PVA then?
Moonshine Posted April 10 Author Posted April 10 (edited) So they actually are manufacturers notches (from Staircraft), saves time having to put individual noggins in between joints if a single piece of timber can be fixed in https://staircraftgroup.com/kb-post/i-joist-notch-installation/ Edited April 10 by Moonshine 1
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