Belgian Passivhaus is Rendered Uninhabitable by Bad Indoor Air

first_img This article is only available to GBA Prime Members Sign up for a free trial and get instant access to this article as well as GBA’s complete library of premium articles and construction details. The first single-family Passivhaus in the U.S. was completed by Katrin Klingenberg in 2004. Klingenberg’s superinsulated home in Urbana, Illinois includes two unusual features: a ventilation system that pulls fresh outdoor air through a buried earth tube, and walls that include an interior layer of OSB. These details were not invented by Klingenberg; she adopted practices that were commonly used by European Passivhaus builders.Although many North American designers have copied Klingenberg’s details, earth tubes are beginning to fall out of favor. Yet even in 2012, earth tubes are still being promoted by some Passivhaus builders.By December 2007, when I first interviewed Dr. Wolfgang Feist, the director of the Passivhaus Institut, Feist was no longer recommending earth tubes. When I asked Feist whether earth tubes in Europe had experienced problems with condensation and mold, he answered, “There were problems in northern Europe, especially in Scandinavia. In Central Europe we haven’t had any hygienic problems so far. Actually, I’m not sure why we don’t have these problems in Central Europe. But I don’t advertise these systems any more, mainly because they are too expensive.”European Passivhaus builders (and Klingenberg) favor the use of a superinsulated wall system with three distinguishing characteristics:Many American Passivhaus proponents (including Albert Rooks of Small Planet Workshop) endorse this type of wall assembly. They often claim that such a wall assembly is a better choice than one with thick exterior foam, arguing that it’s best to use vapor-permeable exterior sheathing so that a wall can dry to the exterior.Homes with earth tubes and vapor-permeable exterior sheathing can perform well — but only if the designer uses a whole-building approach that considers moisture movement from all angles. Moreover, if a builder makes installation errors, all bets are off.A recent case… center_img Start Free Trial Already a member? Log inlast_img read more

60% girls in Delhi colleges anaemic

first_imgWhen 18-year-old Anu (name changed) stood in a queue at Atma Ram Sanatan Dharma College for a blood test, she had no idea that she would be detected with “severe” anaemia, which is risky, according to doctors. “I never thought I had anaemia. I did not feel any of its symptoms,” she said.About 60% of female students in Delhi colleges are anaemic — well above the national average — according to an analysis of data collected from ongoing anaemia detection and awareness camps of the Delhi government accessed by The Hindu. The findings, which are yet to be made public, are based on tests on a total of 5,224 female students in 12 city colleges, of whom 3,128 (59.9%) were found to be anaemic. The national average of anaemia among women between 15 and 49 years is 53% and in Delhi it’s 54.3%, according to National Family Health Survey-4. While the national average came down from 55.3% to 53% between NFHS-3 and NFHS-4, it rose from 44.3% to 55.3% in Delhi. “Anaemia can cause weakness, breathlessness, lack of concentration and if the haemoglobin level falls quickly over a few days, it can even lead to cardiac failure,” said Dr. Nitin Gupta, senior consultant, Sir Ganga Ram Hospital. The students found anaemic during the camps have been referred to nearest government hospitals for treatment. Also, the health department has asked all State government-run hospitals to make sure that students detected with “severe” anaemia are provided “out-of-queue treatment”. ‘IFA tablets for colleges’State programme officer (adolescent health) Dr. Gautam Singh agreed that the percentage of women with anaemia is indeed very high. “We plan to extend distribution of IFA tablets to colleges,” he said.During the camps, 94 of the 3,128 female students were detected with “severe” anaemia.last_img read more

a month agoNeville: Man Utd don’t need Rice

first_imgNeville: Man Utd don’t need Riceby Paul Vegasa month agoSend to a friendShare the loveManchester United legend Gary Neville says they don’t need West Ham United defensive midfielder Declan Rice.Neville believes Rice can develop into a ‘fantastic’ player but not sure if he’s the player that United need.”Would I say yes now at 80million, 90 million? I’m not feeling that personally at this moment in time,” he told Sky Sports.”But am I seeing a really good player who could potentially develop into something fantastic for the next ten years? Yes. I really do think that.“But do United need another player? They’ve already got Matic, they’ve already got McTominay who are doing a similar role to what I see Rice doing.“ TagsTransfersAbout the authorPaul VegasShare the loveHave your saylast_img

Lavender has last chance to leave her ideal legacy

In her first three seasons at Ohio State, Jantel Lavender has accomplished almost everything one could expect from the Cleveland-native center. But OSU coach Jim Foster thinks her career is yet to be defined. “I think Jantel’s career will be measured by championships more so than points scored,” Foster said. Postseason success is the biggest element missing from Lavender’s resume. In Lavender’s time at OSU, only once has her team advanced past the second round of the NCAA Tournament. “We haven’t had the postseason run that we need to,” Lavender said. “Our team just has to be more strong and more together and, you know, more cohesive, for us to go far.” Lavender enters the 2010-11 season as one of the most decorated players in college basketball. She was selected to the Associated Press Preseason All-American team and the watch list for the Wooden Award, which is awarded to the best male and female athletes in college basketball. She was also named the Preseason Big Ten Player of the Year. Should Lavender win her fourth straight Big Ten Player of the Year award after the season, she would be the first in conference history to do so. Lavender said she has her sights set beyond just earning all-conference honors. “The goal is to be a national player of the year,” Lavender said. She has all the tools to earn that honor. In her first three seasons at OSU, Lavender has averaged 20 points and 10.3 rebounds per game and is 534 points shy of Katie Smith’s OSU career scoring record, as well as 63 rebounds short of Tracey Hall’s OSU career rebounding record. Lavender said individual accomplishments come second to team goals. “If my team needs me to get 30, or if my team needs me to get 18 points and 25 rebounds, then that’s what I’m trying to do,” she said. Lavender’s career has gotten help from junior point guard Samantha Prahalis, who is on pace to break the school’s career assist record this season. “Sammy in the open floor is very, very talented, she really is, and you like a complement to that,” Foster said. “Not often is that complement a (center). Usually you see guards finishing plays. To have a center who can run like that, catch like that and finish like that, I think that’s a little different.” Foster compared the chemistry between his point guard and center to that of NBA Hall of Fame members and former Utah Jazz teammates Karl Malone and John Stockton. “That’s a fair one,” Prahalis said when asked about the comparison. “He always says that.” Lavender said she agreed with the evaluation but offered her own comparison for the duo. “I always try to say, you know, (Steve) Nash and (Amar’e) Stoudemire,” Lavender said. “I think that his comparison is just something to make us see where we are in our game.” After this season, Lavender will take her professional-ready game to the next level, where she is projected to be a top-five pick in the 2011 WNBA Draft. But first, she has some unfinished business. “I don’t think that we’ve gotten to the place that I want to be, you know, as a far as a team,” Lavender said. “I want a national championship.” read more

5 Ohio State womens track and field members qualify for NCAA championships

Five members of the Ohio State women’s track and field team qualified for the NCAA championships last weekend at the NCAA East Regional preliminaries in Bloomington, Ind. After winning the Big Ten indoor and outdoor championships for the first time in program history, the Buckeyes entered preliminaries knowing the veterans would have to perform at their best. “Anytime you’re in a field that strong, nothing is taken for granted,” coach Karen Dennis said. Senior sprinter and hurdler Letecia Wright had a successful weekend, taking first place in the 100-meter hurdles with a time of 12.97 seconds. Junior Christina Manning also qualified for nationals with a fifth-place finish. “Making it to nationals once again feels like a redeeming meet,” Manning said. “I have a statement to make on the track and I plan on making it early.” Manning and Wright combined with junior Madison McNary and freshman Chesna Sykes to help the 4-by-100-meter relay team reach the NCAA finals. Wright is no stranger to succeeding on a big stage. “It feels really good to make it to outdoor nationals for the fourth year in a row,” she said. “It was a big surprise to me to win East Regionals because there are a lot of great hurdlers, so my goal was to just make it to nationals.” Wright’s strong performance comes as no surprise to Dennis. “I think it sets her up for just being able to be confident and prepared for the National Championships next week,” Dennis said. “She ran exceptionally well. … She recognizes this is her last year, and I think she wants to end the year on a real positive note.” Junior high jumper Ashley Galbraith qualified with a jump of 1.78 meters. Galbraith usually competes in multi-events for the track and field team, but participated only in the high jump at the preliminary meet. Dennis said this helped Galbraith perform at a higher level. “Regionals afforded her an opportunity to compete in the high jump with fresh legs, and she had a real awesome day,” Dennis said. “I’m really glad we were able to get through the region. … We’re going to the National Championships. We have to refocus our energy and our effort, and realize that we’re getting ready to face the top in both regions.” read more