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Another Take on Tstuds

first_imgEditor’s note: This post originally appeared under the headline “Breaking the Thermal Bridge With Tstuds” in Kiley Jacques’ Houses by Design blog over at  Finehomebuilding.com. Considering all of the discussion this new product has generated here on GBA, we thought it was worth sharing Kiley’s post which offers a few more expert opinions.“I believe in the idea of the thermally broken stud, as well as a future where the focus is on improving the performance of the first 6 in. of walls rather than simply making them thicker.”—Brad StokesBrian Iverson, inventor of the Tstud, has stirred the pot. His 2×6 and 2×8 Tstuds are garnering a lot of attention among builders, designers, and building science nerds of all stripes. Touted as a six-in-one solution to thermal bridging in wall assemblies, the thermally broken Tstud is said to be a cost-effective, energy-saving, eco-friendly framing stud for the ultimate high-performance building envelope. The company also claims the product is easy to work with, doesn’t require any special training, and is stronger than #2 2x6s and 2x8s. That’s saying a lot. Hence, all the chatter.Photo courtesy of Matt RisingerA few weeks ago, we discussed Tstuds on the FHB podcast (episode 186). In response to my comment about wanting to hear from someone in favor of the product, Brad Stokes, a longtime DIY home remodeler, did some research and gave the matter a good deal of thought. “I’m mostly interested in the idea of the Tstud,” he says. “Everyone seems to be advocating for thicker and thicker walls these days, as if space is free and there is no impact on interior room dimensions or encroachment on exterior boundaries. Most of us live on a fraction of an acre and have room sizes that can’t afford to lose several inches or more around the edges—not to mention the fuss and expense of all the jamb extensions.”Brad made some additional points that I think are worth sharing—they are good fodder for builders and designers curious about the pros and cons of this product. I also spoke with Marc Sloot of SALA Architects. He has spec’d Tstuds for a project currently underway and was able to share first-hand experience. Both Brad and Marc have responded to concerns expressed by FHB senior editor Patrick McComb, which included: cost, R-value claims, fussy corner connections, thermal bridging at the bottom plate, stud width, the two-dowel breakage limit, the 4-in. nail-gun requirement, product availability, and general complexity of the build, especially in terms of running mechanicals and plumbing.Brad begins with cost, saying: “The economy and availability of 2×6 framing is hard to beat, but it gets expensive in real dollars to add exterior foam or a secondary wall, and to extend jambs and rework the exterior details. And that doesn’t include the penalty for those of us working with a finite footprint, and who really need those extra 3 in. to make the countertop or a queen-size bed fit in the room. What’s a few thousand extra dollars on a six-figure project if you can get more comfort, lower energy bills, and make that countertop fit? At $1000 or even $5000 more, it’s an intriguing option to consider—especially since it’s probably much stronger than my only other option of building a 2×4 wall with foam. Whether it’s this product or something similar, I am a potential customer.”Marc’s thoughts run along similar lines. For the project pictured here—his first to be constructed with Tstuds—he was after a wall assembly with a mid-30s R-value. He considered 2x4s with exterior insulation, 2x6s with exterior insulation, conventional framing with standard interior insulation, and the Tstud assembly. “The Tstud was cost-competitive for getting to that R-value,” he reports. “It was maybe even a little less when you factor in trips around the house applying different layers for other assemblies.”Marc views the Tstud system as the middle ground between advanced building science and code compliance. “It’s the sweet spot,” he says, noting that the Tstud wall assembly is a standard 5-1/2 in. thick, yet it creates a high-performance envelope. Additionally, he appreciates the split-stud construction—sheathing as well as interior wall finishes can be applied straight to the framing members, which, he says, make Tstuds a good choice for heavy exterior siding such as stone veneer.Having experimented with myriad high-performance wall assemblies, Marc is familiar with the challenges of window and door openings. “You regularly need to address thermal bridging there,” he says. “Even if you are adding continuous exterior insulation, there is at least one solid framing member at those openings. There are lots of ways to do it but you get into the weeds on the complexities of how to install and fasten the units, whereas the Tstud can go right up to the edge of the rough opening. That simplifies the process and uses conventional methods that framers are used to.” (Marc sees that familiarity as one of the biggest advantages of the system.)As for corner connections being fussy, Marc disagrees, saying they are straightforward. “It’s just a single Tstud on the outside corner and a 2x nailer on the inside—like a California corner—for the drywall to attach. It’s advanced framing.”Photo courtesy of Matt RisingerBrad concedes one trouble spot and suggests a fix. “Framing issues like the long nails could be overcome if they offered a 1-1/2-in.-thick product for the plates. I would think the structural specs for these horizontal members would be more achievable in a 1-1/2-in. thickness.” Another option is to use conventional PT 2x6s for the top and bottom plates. Brad concedes a thermal-bridging penalty there but he feels it would still be an improvement over conventional framing. When asked about Tstud bottom plates, Marc admits he used a PT 2×6 for one section of the house that cantilevers over the edge of the concrete foundation for exterior insulation—in that location he was unable to use a Tstud plate.With regard to broken dowels, Marc says instructions for a field fix are supplied but he has yet to see it be an issue. “My observation is that it is not hard to avoid the dowels. You can stick a screwdriver through the foam to locate them. From an electrical standpoint, there’s no reason to break any. If someone’s breaking dowels, they are going at it with aggressive tools that are unnecessary.” Plus, he adds, in colder climates such as his, the only mechanicals going into an exterior wall are electrical, which can be run through the foam without threat to the dowels. Brad seconds that point: “In Minnesota, we rarely put any plumbing in the exterior walls—except an occasional drain/waste/vent system. It doesn’t surprise me that Brian Iverson’s company is in Minnesota—this product seems like a good fit for our climate (zone 6). I found a local builder who has built 15 Tstud homes in the last couple years, and there is a new home that just broke ground nearby that is using Tstuds.” (He is referring to Marc’s project.)Regarding the potentially cost-prohibitive nail guns, Marc notes that larger guns, such as this one sold by Stanley Bostitch, are in the $400 to $500 range—significantly less than the $900 cited on the podcast. “If many guns are being used at one time, then a larger-capacity compressor would be needed,” he notes, “but on my project, the framers are getting by with a standard compressor.” Brad adds: “If we can eliminate the specter of the 4-in. nail gun, maybe [more people] would warm up to the Tstud.”Tstuds are pretty new to the market, so availability is going to be a question. For this project, Marc sourced from Titan Manufacturing, an Ontario-based plant making and distributing the Tstud across North America.Of course, Patrick has company in his naysayers’ camp, including Brad’s son, who has a unique worry. “He’s a molecular biologist,” Brad explains. “He is particularly concerned about the chemical process of forming the polyiso insulation [that goes between the dowels for the thermal break]. He questions whether it is formed in a way that is healthy and safe when installed—especially since it is inside the exterior envelope.”In conclusion, Marc says: “I asked the framers what they thought of the system. They said it’s a little different and they have to think about how they are putting it together, but it’s not any more difficult than stick framing. One thing they noted is the straightness of the material. They said Tstuds are consistently straight and stable. They aren’t seeing twisted studs like they do on conventional stick-frame jobs, where they typically return up to a quarter of the studs. So that’s a lot less waste.” Despite this being the framing crew’s first time using Tstuds, they are moving along as quickly as they would using traditional boards; and all of the tools used for cutting members to size are the same.Just as I was wrapping up this post, I heard from design-build contractor Mike Maines. I had asked for his thoughts on the subject because he is a strong proponent of eco-friendly building products. He adds this measured commentary: “It’s an interesting concept and seems well-designed. They are using the least-bad closed-cell spray foam that maintains a high R-value. The thickness of the foam makes it a more effective method than more typical Bonfiglioli-type installations [the assembly Patrick favors]. On the downside, if any renovations are done in the future, unless this product gains broad market penetration, which is possible but unlikely, there is a decent chance that the system will be compromised due to lack of familiarity. Any system that requires multiple trades to change their habits is asking for trouble.” (Of course, this last point flies in the face of Marc’s argument, and it’s worth noting that Mike has not worked with Tstuds.)Clearly, there’s something about the Tstud that warrants consideration. This video by Matt Risigner has elicited 2780 comments and counting. But will it take off? Like most forward-thinking products, it’s a wait-and-see situation.If you have thoughts on the Tstud, please send them to kjacques@taunton.com.Photos courtesy of Marc Sloot, except where noted.For more on Tstud, try these links:BareNaked TstudT-Stud Field GuideModern Construction of MinnesotaPro UserGreen Building Advisor Peter Yost on the TstudTechnical Advisor John Shafer on the TstudGreen Building Advisor Readers on the Tstud2019 Green Builder Media Product Picklast_img read more

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Odisha rivers in spate after heavy rain

first_imgHeavy rain has lashed most parts of Odisha, especially southern districts, since Saturday sending rivers like Vansadhara and Rushikulya into spate, cutting off roads and flooding many areas.Two women died in a crop field and nine others sustained injuries when lightning struck at Mahaguda village under the Bhanjanagar sub-division of Ganjam district. A mother-daughter duo were injured in lightning strike at Rajamatu village in Nabarangpur district. One person was missing after being swept away by the swirling waters of the Nagabali river.Water level risingThe water level was steadily rising at all six river gauge sites of Vansadhara and Rushikulya. The water level in Rushikulya was rising at three river gauge sites – Sorada, Madhabarida and Purusottampur. Other rivers, Baitarani in Keonjhar and Hati in Kalahandi, were swelling due to heavy rain received during the past 24 hours. Many areas in Kalahandi, Ganjam and Rayagada districts were inundated following heavy rain.Kotraguda in Vansadhara basin received 234.8 mm of rainfall while Purusottampur in Rushikulya basin recorded 165 mm of rain. A low pressure area that formed over northwest of the Bay of Bengal has intensified into a well-marked low pressure area. “Heavy to very heavy rain is likely to occur at a few places in southern Odisha district with extremely heavy rain at one or two places over Rayagada, Kandhamal, Kalahandi, Balangir, Nuapada and Nabarangpur districts,” said H. R. Biswas, head of Meteorological Centre, Bhubaneswar.last_img read more

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Gilas arrives in Melbourne, gears up for Australia match

first_imgBrace for potentially devastating typhoon approaching PH – NDRRMC AFP official booed out of forum Gilas left for Melbourne late Monday night and arrived after an eight-hour flight before Tuesday morning. LATEST STORIES Read Next Don’t miss out on the latest news and information. Trending Articles PLAY LIST 00:50Trending Articles00:50Trending Articles00:50Trending Articles01:29Police teams find crossbows, bows in HK university01:35Panelo suggests discounted SEA Games tickets for students02:49Robredo: True leaders perform well despite having ‘uninspiring’ boss02:42PH underwater hockey team aims to make waves in SEA Games01:44Philippines marks anniversary of massacre with calls for justice01:19Fire erupts in Barangay Tatalon in Quezon City Globe Business launches leading cloud-enabled and hardware-agnostic conferencing platform in PH MOST READ NEXT BLOCK ASIA 2.0 introduces GURUS AWARDS to recognize and reward industry influencers John Lloyd Cruz a dashing guest at Vhong Navarro’s wedding 2 ‘newbie’ drug pushers fall in Lucena sting Slow and steady hope for near-extinct Bangladesh tortoises Naturalized big man Andray Blatche led the session together with leaders Jayson Castro, June Mar Fajardo, Gabe Norwood, and Calvin Abueva.Also part of the trip were Japeth Aguilar, Allein Maliksi, Kevin Alas, RR Pogoy, Matthew Wright, Jio Jalalon, Carl Bryan Cruz, Kiefer Ravena, and “23-for-23” cadet” Abu Tratter.Gilas Pilipinas takes on the Boomers on Thursday at Margaret Court Arena.ADVERTISEMENT UAAP jrs basketball: NU ends UST’s dream run, books Finals date vs Ateneo Typhoon Kammuri accelerates, gains strength en route to PH View comments Gilas Pilipinas is now on its final preparations for its colossal Fiba World Cup Asian qualifying game against Australia on Thursday.Coach Chot Reyes shared a glimpse of the team’s first training in Melbourne on Tuesday as the Philippine crew finally got its full roster buckling down to work.ADVERTISEMENT Unang ensayo #💪❤ pic.twitter.com/LZLjobO69R— Chot Reyes (@coachot) February 20, 2018FEATURED STORIESSPORTSWATCH: Drones light up sky in final leg of SEA Games torch runSPORTSLillard, Anthony lead Blazers over ThunderSPORTSMalditas save PH from shutoutlast_img read more

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Bucks need better bench play to regain control vs Raptors

first_imgLATEST STORIES The Bucks reserves played so well in the first two games of the series that the teams’ apparel shop unveiled a “Bench Mob” T-shirt, celebrating the efforts of Malcolm Brogdon, Ersan Ilyasova, George Hill and others. Milwaukee’s bench outscored Toronto’s reserves 130-78 through the first three games of the series.But it was the Raptors’ bench, led by forward Norman Powell’s 18 points, that decided Game 4 — scoring 48 points Tuesday as Toronto evened the series at 2-2.FEATURED STORIESSPORTSPrivate companies step in to help SEA Games hostingSPORTSPalace wants Cayetano’s PHISGOC Foundation probed over corruption chargesSPORTSSingapore latest to raise issue on SEA Games food, logistics“They need to play well,” Budenholzer said Wednesday of his reserves. “I think our whole team, whether it be the bench or the starters, needs to be better defensively. I think there’s things offensively where the bench can, you know, just like the rest of us, we have to execute a little bit better. … this series, the benches have been critical and very influential and credit to Toronto’s bench, particularly. They really stepped up and had a huge game, and we need that from our group.”Serge Ibaka gave the Raptors a lift off the bench Tuesday with 17 points and 13 rebounds. Fellow Toronto reserve Fred VanVleet added 13 points and six assists. Their efforts came as the Raptors got only 19 points from a hobbled Kawhi Leonard. Toronto Raptors center Serge Ibaka (9) battles for the rebound against Milwaukee Bucks forward Nikola Mirotic (41) and Milwaukee Bucks guard Pat Connaughton (24) during the second half of Game 4 of the NBA basketball playoffs Eastern Conference finals, Tuesday, May 21, 2019 in Toronto. (Frank Gunn/The Canadian Press via AP)MILWAUKEE — The Bucks are back in Milwaukee looking to regain momentum in the Eastern Conference finals.Coach Mike Budenholzer believes the play of his bench will be a major factor in what happens in Game 5 on Thursday.ADVERTISEMENT Huge Toronto crowd celebrates Raptors’ historic win PLAY LIST 01:08Huge Toronto crowd celebrates Raptors’ historic win03:12Kevin Durant out with Achilles injury; to undergo MRI on Tuesday01:43Who are Filipinos rooting for in the NBA Finals?02:42PH underwater hockey team aims to make waves in SEA Games01:44Philippines marks anniversary of massacre with calls for justice01:19Fire erupts in Barangay Tatalon in Quezon City01:07Trump talks impeachment while meeting NCAA athletes02:49World-class track facilities installed at NCC for SEA Games02:11Trump awards medals to Jon Voight, Alison Krauss Before the two losses to Toronto in the Eastern Conference finals, the only other time Milwaukee dropped back-to-back games was in March, losing at Utah on March 2 and at Phoenix on March 4.THE DRAKE FACTORDrake’s impromptu massage of Nurse’s shoulders is getting a lot of attention, though the Raptors’ coach said he didn’t even realize it had happened.“I didn’t even know I got the shoulder rub last night until somebody showed me a picture today,” Nurse said. “I didn’t even feel it. I was so locked into the game. Didn’t distract me at all.”Drake has been very animated at courtside, and Budenholzer said if the rapper steps onto the court, it crosses the line.“I don’t know how much he’s on the court. It sounds like you guys are saying it’s more than I realize,” Budenholzer said. “There’s certainly no place for fans and, you know, whatever it is exactly that Drake is for the Toronto Raptors. You know, to be on the court, there’s boundaries and lines for a reason, and like I said, the league is usually pretty good at being on top of stuff like that.”Sports Related Videospowered by AdSparcRead Next Cayetano: Senate, Drilon to be blamed for SEA Games mess View comments Ethel Booba twits Mocha over 2 toilets in one cubicle at SEA Games venue Don’t miss out on the latest news and information. Here are some other things to know going into Thursday’s Game 5:DEFENSIVE STANDOUTSSome of the league’s best defensive players are in the Eastern Conference finals.Bucks MVP candidate Giannis Antetokounmpo and Milwaukee guard Eric Bledsoe Wednesday were named NBA first-team all-defensive performers.Toronto forward Kawhi Leonard was named second team.NO TIMETABLE FOR ANUNOBYRaptors coach Nick Nurse said OG Anunoby does not have a timetable for returning from an emergency appendectomy that has sidelined the 21-year-old forward for the entire postseason.“He is being more active every day,” Nurse said. “I think we are getting closer to a point where we’re — you know, unpack is the next step for him. He’s moving pretty good, he’s shooting, etc., but still a ways away from being able to take hits and contact in the areas that he needs to test out.”TWICE IS ENOUGHMilwaukee isn’t accustomed to losing back-to-back games in 2019 — in fact, it’s happened only twice. ‘Rebel attack’ no cause for concern-PNP, AFP MOST READ Raptors coach Nick Nurse is confident his bench will continue to play well in Milwaukee because of Toronto’s style of play.“That’s really kind of our system, would be that we create opportunities and everyone’s involved and everybody’s touching the ball,” he said. “Everybody’s moving and cutting. It’s kind of a free-flowing, open system.“If we play with the effort we’ve put in the last two games, actually three of the four games in the series, we are going to have a really good chance to win,” Nurse said. “We are going to put ourselves in position to win, and I don’t think it’s any tricky schemes or fabulous game plans. I think it’s our players playing their butts off, really.”Brogdon, who returned from a foot injury in the Eastern Conference semifinals, missed his first seven shots Tuesday night and finished with just four points. None of the Milwaukee reserves scored in double digits.“It was disappointing, but I mean, the series is 2-2,” said Bucks forward Kris Middleton, who finished with a game-high 30 points. “It’s not the end of the world. They protect their home court just like we did, and I know the fight is going to be a dogfight. First team to two wins. Can’t feel sorry for ourselves that we lost two in a row here. We have to go protect home court and go from there.”ADVERTISEMENT Private companies step in to help SEA Games hosting Roger Federer, Rafael Nadal threaten Novak Djokovic bid for historic Grand Slam Catholic schools seek legislated pay hike, too DA eyes importing ‘galunggong’ anew Two-day strike in Bicol fails to cripple transport Duterte wants probe of SEA Games messlast_img read more