I’m doing a remodel on my kitchen and had to go into the ceiling. Discovered the builder cut these holes into the joists. How in Gods name is this acceptable? These holes are huge.
>OSB joistsyeah that really isn't acceptable
>>2968508They're called TJIs and are much more stable than conventional lumber of equivalent size.>>2968501Yeah, those holes are far too large, but it's difficult to compromise a TJI's integrity so long as the hole doesn't run from top to bottom chord. It's lazy and a sign of poor workmanship, but if that's the worst thing you find, you're doing alright.
>>2968512>more stablelol
what do the specs say for your joists
>>2968522I’m not sure because I cant see the manufacturer builder stamp. Only the APA EWS performance rated stamping. Its a 14 inch performance rated joist.
>>2968501bro you already live in a cardboard house held by elmers glue, chill
>>2968501those are fine so long as they are ~8/9 feet from the end of the joist
>>2968501You'd need to find out who the manufacturer of the TJI is (should be printed on them) and look at the manufacturer's documentation to see if the holes are within the size and location parameters they set. For example, attached are the allowable hole guidelines for Weyerhaeuser TJI's.
>>2968529>>2968558this. the size of the hole is less important than its distance to the end of the joist, but ultimately it depends on the manufacturer specs. if the hole is in the middle of the span, you can have a surprising large hole.
>>2968501>joists>made of OSBlol
>>2970447They're stronger than typical solid wood joists of the same dimensions.A standard #2 SPF 2x10 floor joist at 16" OC spacing can span up to 15.5' with a total floor load of 50 PSF.Meanwhile a 10" TJI with the same spacing and floor load has a max span of between 15.5' and 18' depending on the grade of TJI used.
>>2968501Any hole or even slight manufacturing defect will weaken it to some degree.Generally, the principle is that you make the holes as few and as small as possible.My guess is the hvac guys made that for a stove vent and ended up not using it, and the electrical guys saw it, shrugged, and just used them.I wouldn’t worry about it it too much, but the big holes allow fire propagation, so if you want, you could sister some press-fit osb panels that extend at least 2" on each side of the holes to strengthen and block the air pathway.
>>2970459Says who?
>>2970459Fine. Go build your house out of fiberboard, then
>>2970459One of those melts like sugar when in contact with water
>>2970490Span tables certified by structural engineers.>>2970591>One of those melts like sugar when in contact with waterThey're fine getting wet, they only have a problem with prolonged exposure to water. If any of the OSB components in your house are subject to prolonged water exposure, you either had a shitty builder that had no idea what they were doing, or you have a leak and are completely oblivious to it.
>>2968512>They're called TJIs and are much more stable than conventional lumber of equivalent sizeThis is like when GM gets an award for best "initial quality" on a shit box they're selling. These boards are being used on roofs now. How long can they handle a leak before they disintegrate and you have to replace the structure of the roof?
I hate Europeans so goddamn much
its round and it is the webbing, you got little arches,
>>2970459KEK!They are NOT.Here's why.If a fire department finds out you have these "Silent floor systems" they will let your house BURN. They aren't about to let a fucking Oak bedroom set drop on them from above.I'm sad to admit, I had to build with these in the late 90s, when they were "State of the Art" They are garbage and the time it takes for a 2x2 of pine and glued-up OSB web to burn is 1/10th the time of a properly rated 2x10/12 of S.Yellow Pine or Douglas.These and EVERY other bullshit engineer's toy, like SIPS panels, "Engineered", finger jointed studs and ICFs are just Money makers for the industry.America needs to go back to conventional building materials, and bring back some of the old practices that have lasted for hundreds of years.BTW, homes in the 80s and 90s had a LOT of blueboard and foil backed foam sheets in their walls, too. Turns out that that's just like lining your walls with gasoline when it hits that crucial temp threshold.OP shouldn't freak out too much, I'd keep an eye on it a few times a year,(Fall and Spring -like after seasonal rains and snowmelts AND the freeze thaw cycle.)>>2971777CheckedTHIS>>2970644>structural engineersYeah, there are some good ones, but IME, they are top 20% or less.These days most of them have almost ZERO true field experience and are heavily reliant on expensive software packages that allow then to "Virtually Walk-through" their structuresAs a result, often times I'd run across plans that had rafter sets cut off doorways and other bizarre anomalies like dead spaces that have no need to be there, or odd jogs in the roofline just to make up for the custom parameters of the rooms below.GO BACK White man...
In addition, the WASTE from these designs usually negates any "GREEN BUILDING" practices. One of the last conventional custom homes I was on the build for had 5 full 40 yd. roll-offs of cutoff waste. We were a crew that prided ourselves on LOW WASTE, often adding lots of extra blocking to bathrooms and closets for future applications, but there was no helping this last one. The roofline itself was so retardedly cut up, the roof decking cutoffs took up a whole 40yd.+Sure, it was a 9600sqft. Mcmansion, but we'd build bigger homes,(with office spaces in the walk-out basement,) with 1/5th the waste of that one.
>>2971808bruh, if your house is on fire, it's already a lost cause. it doesn't matter which one burns faster at that point, you lost the structure already.
>>2971820True, but it's definitely better if there's a little more substance to the structural components so I have a little more time to get my ass out before it collapses.
>>2971820That's not true.>house fire starts in kitchen by retard who cooks everything on HIGH>Frozen french fries, covered in frost, in overfilled, overheated, saucepan of sneed-Goyl>OH SHIDOHSHIDOSHID!!>Calls fire dept>They are there in 7 minutes>Kitchen is a loss, but rest of house, aside from some smoke damage is OK.Happens all the time with older homes pre-1930s.Modern homes? Yeah, you're right.I get why builders switched to gyp-some(intentional,) board over plaster, but homes where the interior walls were coated in a green scratch coat were a hell of a lot more resilient and fire/mold resistant.If you drive through, or just watch YT videos filmed in places that are now defunct, "ghetto" neighborhoods, you'll see a lot of houses that had fires, but are still standing.That said, I've also never met a more scammy group of people than disaster remediation companies.>Well, we're going to have to GUT everything and hire in the cheapest $12/hr. "clean-up" guys for $95/billable hr. then get Hucklebuck Randy and Chuck in a truck, the painters, to "Encapsulate" the whole thing with KILLZ for, oh... $6500.00.Seriously, I've never seen such incompetence and WASTE driven spending in my life before.Not my house, but the neighbors got runthrough it and even with a 100% coverage, $350k limit, they STILL ended up paying out another $4k for "Things we forgot to include/itemize"I'm just so sick of the overwhelming amount of CON in Contractor, having been in the biz for 25 years myself.>No room for Boyscouts in this biz, now shut up or we'll put a lien on your shit for not paying the bill on our overpriced, substandard work./rant
>>2968501OP thumbnail looked like a butthole and got my pingaling hard so I'm gonna go crank my hog now ty
>>2970590Literally what ikea did
