Linden special needs centre gets US$5000 donation

first_imgThe Overseas Medical Assistance Team (OMAT) on Wednesday donated US$5000 to the Linden Centre for Special Needs in an effort to assist with the rehabilitation of its building.Mrs Carryl hands over the cheque to Linden Centre for Special Needs representative Lorraine Butcher in the presence of Dr Stephen Carryl and Mayor Waneka ArrindellMembers of the team made the donation to representatives of the Special Needs Centre at the Linden Hospital Complex (LHC), where the non-profit medical organisation is currently conducting a medical mission.OMAT President, Dr Stephen Carryl, during the simple handing-over ceremony, noted that the organisation, which started in 1992, has been providing care in health and education over the past 27 years in developing countries like Guyana.Linden Mayor Waneka Arrindell, who was present at the event, expressed gratitude to the team for its kind gesture while she made the call for other organisations to follow suit.last_img read more

Norton Street man wanted for illegal gun, ammunition

first_imgWanted: Alfie Norman GarrawayThe Guyana Police Force (GPF) is seeking the public’s assistance in finding 38-year-old Alfie Norman Garraway, who is wanted for questioning in connection to the illegal possession of firearm and ammunition.The police, in a wanted bulletin, stated that Garraway had the illegal items in his possession at Norton Street, Lodge, on October 5, 2019.His last known address was given as Lot 71 Norton Street, Lodge, Georgetown.Anyone with information that may lead to the arrest of Garraway also called “Alfie” is asked to contact the police on telephone numbers 226-1389, 226-7476, 911 or the nearest police station.last_img

Judge tosses suit against Jackson

first_img160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set! NEW ORLEANS – Michael Jackson proved he was in California when a New Orleans-area man claimed the pop star kidnapped and molested him for nine days in 1984, a federal judge ruled. U.S. District Judge Eldon Fallon’s reasons for tossing a lawsuit filed by Joseph Bartucci Jr. against Jackson were posted Tuesday on the court’s Web site. Bartucci had claimed he was forced into a white limousine on May 19, 1984, during the New Orleans World’s Fair, and driven to California while being molested, held at gunpoint and cut with steel wire and a razor blade. His attorney, Louis Koerner, did not answer his telephone Tuesday. On Monday, he had said he was shocked by the dismissal but could not comment more until he saw the judge’s reasons. AD Quality Auto 360p 720p 1080p Top articles1/5READ MOREOregon Ducks football players get stuck on Disney ride during Rose Bowl eventBartucci claimed the emotional and physical trauma cost him his memories until 2003, when he saw a Court TV show about child molestation charges brought against Jackson in California. Jackson was acquitted in that case. Fallon said Wayne Nagin, who kept Jackson’s appointment calendar in the spring of 1984, provided a sworn statement saying Jackson was rehearsing in California for his Victory Tour from May 20-27, 1984. “The calendar reflects a series of appointments each day during the period,” Fallon wrote. Moreover, he said, Charilette R. Sweeney of Encino swore she had known Jackson since 1976 and remembered talking to him on May 13, 17 and 20, 1984, about getting an award from President Reagan on May 14 of that year. “This evidence conclusively demonstrates that Mr. Jackson was in California from May 19 to May 27, 1984, and could not have been in New Orleans to participate in the events alleged” by Bartucci, Fallon wrote.last_img read more

CHAMPIONS! ST COLUMBA’S WIN ULSTER SOCCER CROWN AFTER SHOOT-OUT WITH CARN

first_imgSchools Football Ulster First Year Boys Cup FinalSt Columba’s College 0-0 Carndonagh Community School(St Columba’s won 5-4 on penalties) St Columba’s College from the Twin Towns of Ballybofey and Stranlorar are celebrating this evening after their Ulster Final  penalty shoot-out victory over Carndonagh Community School at Maginn  Park, Buncranna. Columba’s First year boys scrapped to victory by 5 goals to 4 on penalties after the game finish 0-0 AET.After All Ireland success over the past few weeks for St Eunan’s College Letterkennny, all eyes are now on St Columba’s College in their quest for similar glory.They  now play in the All Ireland Semi Final this Tuesday against CBS Lucan(Dublin) at Gortakeegan,(Monaghan United FC grounds). MAIN PIC: Gareth Doherty- St Columba’s College Under 13 Captain.BELOW: Winners: St Columba’s: CHAMPIONS! ST COLUMBA’S WIN ULSTER SOCCER CROWN AFTER SHOOT-OUT WITH CARN was last modified: May 10th, 2012 by BrendaShare this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pocket (Opens in new window)Click to share on Telegram (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Skype (Opens in new window)Click to print (Opens in new window) Tags:CHAMPIONS! ST COLUMBA’S WIN ULSTER SOCCER CROWN AFTER SHOOT-OUT WITH CARNlast_img read more

HONOURED BY OUR COUNTY: DONEGAL PLAYERS RECEIVE CIVIC RECEPTION FROM MAYOR

first_imgDONEGAL Mayor Frank McBrearty has paid a glowing tribute to Jim McGuinness and the Donegal senior football squad at a ceremony in Lifford on Friday night.Cllr McBrearty said the All-Ireland winners would inspire a new generation to take up sport.“It is a fantastic achievement and so many young people have some fine role models to look up to,” said the Mayor. “They have inspired a new generation and inspired so many other people with their achievements in recent years.”Donegal manager Jim McGuinness thanked the council for the tribute and paid tribute to all his players and back room team who had brought Sam Maguire to Donegal in September.Jim said five of the Donegal panel were still looking for jobs and he hoped they would get positions so they could continue their work on the pitch for the county.He said Ryan Bradley, Anthony Thompson, Leo McLoone, Paddy McGrath and Eamonn McGee had put their lives on hold for Donegal. “I would ask anyone here, if it is at all possible to get these solid men some relaibale employment. They need security and it would benefit our team,” he said. HONOURED BY OUR COUNTY: DONEGAL PLAYERS RECEIVE CIVIC RECEPTION FROM MAYOR was last modified: February 16th, 2013 by BrendaShare this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pocket (Opens in new window)Click to share on Telegram (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Skype (Opens in new window)Click to print (Opens in new window) Tags:HONOURED BY OUR COUNTY: DONEGAL PLAYERS RECEIVE CIVIC RECEPTION FROM MAYORlast_img read more

FUBA NBL: Ndejje stun Oilers to force game three

first_img Tags: Ali Mavitacity oilersFUBA NBL 2019Gauthier BaderhaInnocent OjeraJames OkelloMandy JuruniNdejje AngelsSam KasilutopWalker Obedi Action between Ndejje (white) and Oilers (Blue) in the FUBA NBL on Wednesday night. (PHOTO/FUBA)FUBA NBL – PlayoffsNdejje Angels 69-66 City OilersMTN Arena, LugogoWednesday, 25-09-2019LUGOGO – Ndejje Angels produced a breathtaking comeback in the fourth quarter to ensure that there will be a game three in their quarter-finals’ match up with FUBA National Basketball League (NBL) defending champions City Oilers.In the game played on Wednesday, Walker Obedi’s side went into the last 10 minutes trailing 46-52 but won the fourth 23-14 and the contest 69-66 to level the best of three series at 1-1.The two teams will now face off in game three at the same venue on Sunday, 29th September at 4pm.Having won the first game 83-75, Oilers knew that victory on Wednesday would see them sweep Ndejje and storm the semis.Despite trailing 4-0 inside the opening four minutes, Mandy Juruni saw his charges win the first quarter 21-16.Oilers advantage was improved to 8 (40-32) by halftime after winning the second 19-16.Ndejje’s redemption started in the third as they took it 14-12 but at this point, it was seen as a minor blip by the Oilers.However, Innocent Ojera’s three-pointer with 05:17 on the clock leveled matters and it was a cat and mouse game from their on-wards as the lead changed hands three times in the final five minutes with Ndejje eventually closing out the contest 69-66.Ojera was named player of the match after contributing a game-high 20 points, adding three rebounds, two assists and as many steals.Ndejje also saw Sam Kasilu and Gauthier Baderha manage double figures in terms of points as the contributed 10 and 17 respectively.For Oilers, James Okello registered a double-double of 17 points and 14 rebounds but it was not enough to see his side register victory. Ivan Muhwezi was the other to enter into double figures for Juruni’s side as he managed 15 points.In the day’s other game, KCCA sealed a spot in the Women’s playoff semis following a 68-57 victory over Angels Basketball Club.Having won the opener 73-62 on Monday, Ali Mavita’s side made no mistake in sealing out the series.After losing the first quarter 15-16, KCCA FC bounced back to draw the second and win both the third and fourth.Cynthia Irankunda was the start of the show for KCCA as she posted a game-high 21 points on the night, adding 7 rebounds and three assists to her name.Substitute Sylvia Nakazibwe also managed double figures in terms of scoring in the victory as she managed 14 points off the bench.For Angles, Mellisa Akulu registered a double-double of 14 points and as many rebounds. She was the only one to manage double figures in the losing effort.KCCA now joins KIU Rangers in the semi-finals of the 2019 NBL playoffs. The other Lady contests have JKL Lady Dolphins and UCU Lady Canons lead their respective quarter-finals against UMU Ravens and A1 Challenge 1-0.The NBL upcoming fixturesFriday, 27-09-2019-A1 Challenge vs UCU Lady Canons-Betway Power vs JKL DolphinsComments last_img read more

Back to School, Front to Darwinism Debate

first_imgThe national debate about how to teach origins in public schools continues to roil.  Here are some recent developments:Poll:  A new Pew Research Poll reported on MSNBC News found that 64% of Americans want creationism taught alongside evolutionism, and 38% favor teaching creation only.  For details see the Pew Research press release which includes results on many other questions about religion, politics and education.California:  An AP story published by ABC News says that Christian schools are suing the University of California system for not accepting their students.  The Association of Christian Schools International says that the UC is discriminating against high school students who used textbooks critical of Darwinism.  Colin Sharkey at Campus Magazine calls this a political, not scientific move by UC.  Meanwhile, UCLA is seeking to hire a professional evolutionist; does such a person publish or perish, or evolve or perish?Pennsylvania:  The battle over evolution is still raging in Dover, according to USA Today.South Carolina:  State senator Mike Fair wants South Carolina students to hear the full range of scientific theories of origins, including intelligent design, according to Insight Magazine and Agape Press.Australia:  LifeSite reports that a federal minister of education down under told reporters that “ID would have a place with Darwinism should parents or schools be interested.”  According to the headline, opponents are furious.  The article refers to the testimony of former evolutionist Dean Kenyon, whose futile search for chemical origins of life was highlighted in the film Unlocking the Mystery of Life.Iowa:  A big ID row has broken out on the Iowa State campus, Iowa State Daily.  120 faculty members have signed a statement rejecting intelligent design as science.  The Des Moines Register explained how Guillermo Gonzalez, co-author of The Privileged Planet, became a target of controversy when Hector Avalos, religion professor [an atheist] garnered the signatures because of Gonzalez’ research activities and beliefs about ID.  When columnist Rekha Basu claimed that, “ISU can’t afford to let its curriculum be polluted this way,” Mike Gene, editorializing on Telic Thoughts feared this may lead to a McCarthyesque loyalty oath for faculty members.  Guillermo responded the next day to the Des Moines Register and Reid Forgrave wrote an article about the controversy surrounding him in the same issue.  Agape Press also wrote about it.This set of articles most surely represents the tip of a large iceberg stretching across the United States and the world.If science were really so threatened by a few people using the D word design, the Darwinists wouldn’t have to defend their pet story with loyalty oaths, signed statements, and discrimination.  They could solve their little conflict with a little evidence.  That’s where the wise advise aiming our eyes.(Visited 8 times, 1 visits today)FacebookTwitterPinterestSave分享0last_img read more

Home Affairs Minister Malusi Gigaba clarifies new travel rules

first_imgStatement by Minister of Home Affairs Malusi Gigaba in relation to implementation of new immigration regulations on 16 September 2014 in Cape TownI would like to thank you all for your presence today as we make certain announcements with regard to the implementation of the new immigration regulations which came into effect on May 26th of this year.The new immigration regulations were introduced to improve our ability to manage immigration effectively, in a way which balances South Africa’s openness to legitimate travellers, as well as developmental and security imperatives.Most elements of the new regulation are working well.This is despite some asymmetries of information which have further compounded anxiety and inertia with regard to particular aspects of the new regulations.Many improvements have been effected as a result of the regulations.Immigrants to South Africa are enjoying high-quality service and improved turnaround times at our Visa Facilitation Centres.Skilled professionals and businesspeople are enjoying our improved visa regime, including the ability to apply for a critical skills visa before even finding a job, and the consideration of their families as a unit.Since the announcement of the new regulations, we have consistently maintained that we welcome constructive engagement from stakeholders on their implementation.We thank those stakeholders who have engaged us substantively and constructively.The information acquired has empowered the department to serve South Africans and foreign visitors and our various stakeholders more efficiently.Subsequent to our meeting with the Minister of Tourism last month, Mr Derek Hanekom, we have also met with tourism and aviation industry stakeholders including representatives from the IATA, ASATA the South African Tourism Council, and announced the formation of a joint task team between the department and the industry as a vehicle for ongoing engagement.We are enormously pleased with the establishment of the task team, and trust that its representatives will bring invaluable perspectives and information on the tourism and travel sector, and help us improve communication with their clients and the sector as a whole.We have further continued to engage with the representatives of the film industry and soccer fraternity.The different stakeholders have drawn our attention to the challenges relating to the new requirements for travelling children, which come into effect on October 1st, 2014, which were instituted to ensure the safety of children, in line with the Children’s Act of 2005 and our own international obligations.In particular, the stakeholders have highlighted challenges regarding the requirement that all children entering or exiting South Africa be in possession of a passport, an Unabridged Birth Certificate, and written permission from both parents or guardians of the child, authorizing that child’s travel.While the requirement that all children possess a passport has been implemented successfully, challenges have been raised regarding the requirements for the Unabridged Birth Certificate and written permission.Stakeholders have alerted us to two main challenges: firstly, of ensuring accurate and timely communication to missions abroad, travel operators, and prospective travellers around the world about the new requirements; and secondly, that parents and those authorized to travel with children have time to obtain the required documentation in time for their travel plans.It was put to the department, that while the new regulations are accepted as necessary and are fully supported, due to these challenges mentioned above, and particularly in light of the upcoming peak travel periods for families – that is, December / January for the festive season and April for Easter – a postponement would greatly assist travellers and the sectors as a whole.The department has taken this input into consideration, along with our obligation to ensure the safety of children entering and exiting the country.Having taken all of this into account, we have granted a postponement of these two particular requirements – the Unabridged Birth Certificate and written permission to June 1st 2015.During this postponement, I have directed the DDG: Immigration Services, Mr Jackie McKay, to work intensively with industry stakeholders to ensure accurate information is available to all prospective travellers accompanying children all around the world, and allow those travellers time to gather the necessary documents.While the requirements will be the same for South Africans and citizens of other countries, for foreigners’ purposes, an Unabridged Birth Certificate is merely a birth certificate from the responsible authority in their country which lists the particulars of the child’s parents.In the instance where this information is contained on the child’s passport, this too shall be acceptable.To ensure that the security of children is not undermined during this period, our officials will be on heightened alert, and will use other means, including additional screening, vetting and interviews as necessary, to ensure all travelling children are authorized to do so.It is important to note that the implementation of the regulations should not affect South African children born from 3 March 2013 onwards, as the Department began issuing Unabridged Birth Certificates, on-the-spot, for all children whose births were registered from that date.Therefore the population of children / minors that will be affected by the implementation of these regulations would be children born between 1996 and February 2013.We have established that approximately 17 million children were born during this period.Out of this population, approximately 1.1 million have been issued with valid SA passports.The postponement, as well as today’s statement, is aimed at encouraging citizens to apply well in advance and obtain the required Unabridged Birth Certificates for the minors / children they intend traveling with.Furthermore, between now and the implementation date of the regulation, citizens who apply for passports in respect of minors / children will be encouraged by front line officials to apply for Unabridged Birth Certificates for such minors.In closing, we encourage you to anticipate further regulatory changes from the Department of Home Affairs, in particular around the Births and Deaths Registration Act.We envision amending the act to implement more stringent processes for the late registration of births, which we intend to end after December 2015.Thereafter the early registration of birth, immediately at the hospital or within 30 days, will be the only way into the National Population Register.Thank you for your attention.Enquiries:Mayihlome Tshwete072 869 2477Department of Home Affairslast_img read more

Amazon Web Services Announces Relational Database Services

first_imgIn addition to RDS, Amazon now offers Simple DB and Amazon EC2- Relational Database AMI. The Simple DB service is a simpler version of RDS. According to Vogels, it is designed for applications that do not require a relational model and principally demand indexing and querying capabilities. The Amazon EC2- Relational Database AMI is designed for users who have particular relational database requirements and want full control.RDS may be a bit slow to adoption as security is the big issue for the enterprise. But this issue will wane as people recognize that cloud offerings can be as secure as on-premise systems. Further, we are sure that security concerns will mellow when companies compare the costs and time requirements of RDS to what they do on-premise.In that regard, prices are already decreasing for EC2. Starting November 1, Amazon is dropping its per-hour prices for the following: Tags:#enterprise#Products Massive Non-Desk Workforce is an Opportunity fo… Amazon is providing users with the ability to run relational databases in the cloud. The service, Amazon Relational Database Service (RDS), means that customers now have another way to use a cloud service for a function normally administered by an IT department.Werner Vogels, chief technology officer for Amazon, says the new service means that RDS customers will not have to deal with “the ‘muck’ of relational database management freeing up its users to focus on their applications and business.” RDS will take care of the headaches such as patching and IT administration of the relational database.According to Vogels, RDS provides the full capabilities of a MySQL Database. The goal is to make it simple for customers to move their databases to RDS without needing to make modifications. Like all Amazon Web Services, RDS scales based on usage. The customer may use as much storage, power and memory as they need. Costs ebb and flow depending on how much they use. Storage, for instance, is managed through API calls.RDS pricing per instance is as follows: Cognitive Automation is the Immediate Future of… Related Posts center_img IT + Project Management: A Love Affair 3 Areas of Your Business that Need Tech Now alex williams That’s a 15 percent drop in cost from the current prices for Linux instances.last_img read more

Ventilation for Passive House Multifamily Projects, Part 1

first_imgProject teams pursuing Passive House certification frequently ask, “Where do we locate the heat- or energy-recovery ventilator?” When the Passive House concept is scaled to a multifamily program, the answer is complex. While there are two primary arrangements for HRV/ERV systems. As multifamily Passive House projects begin to scale, the trade-off between the two arrangements is dynamic and needs to be carefully considered.  A low-volume unit ventilating an individual apartment is called a “unitized HRV/ERV.” A high-volume unit ventilating multiple apartments, and often servicing several floors, is referred to as a “centralized HRV/ERV.” Trade-offs As Passive House consultants, we can attempt to address the system arrangement question with building science. However, in New York City, rentable floor space is very valuable, so considering the floor area trade-off is of particular interest to project teams.RELATED ARTICLESMisconceptions About HRVs and ERVsCommissioning ERVsCornell-Technion Green Campus Gets NYC NodCompartmentalization in Multifamily BuildingsResidential Commissioning When a unitized system cannot be located in a dropped ceiling due to low floor-to-floor height, it is placed in a dedicated mechanical closet. This closet is typically no smaller than 10 square feet and includes the necessary ductwork connections. The alternative solution is to increase the floor-to-floor height to accommodate the unit and horizontal duct runs in the ceiling. While centralized HRV/ERV systems allow short horizontal duct runs, they require floor space to accommodate vertical shafts. With supply and exhaust ducts coupled together, the required floor area is between 8 and 12 square feet. As a result, a centralized HRV/ERV system may actually require more floor area than a unitized system. In the case of of the Cornell Tech building in New York City, vertical supply and exhaust ductwork for the centralized HRV/ERV system required 222.5 square feet per floor, or 13 square feet per apartment (see image below). Unitized HRV/ERV mechanical closets would have required an estimated 170 square feet per floor, or 10 square feet per unit (on right). In the case of the Cornell Tech tower in New York City, a centralized HRV/ERV system required 13 square feet per apartment. A unitized system would have required 10 square feet per unit. Factoring in operating costs When determining cost effectiveness, building operating cost is of equal importance to floor area. Placing unitized HRV/ERV systems in apartments allows owners to include ventilation electricity on the residential electric meter, so the tenant pays for ventilation. In contrast, a central HRV/ERV’s electricity cost is absorbed by the building owner. Billing the tenants for ventilation may be attractive, but the trade-off is higher maintenance costs. All HRV/ERV units require routine filter changes, usually two or three times per year, as well as regular cleaning of exterior exhaust and intake vents. Building maintenance must be performed by the building management team. Multiply this by the number of apartments in the building for a unitized HRV/ERV system and the additional maintenance costs are likely to exceed any reduction to the owner’s utility bills. For a multifamily building, regular filter changes and exterior vent cleaning quickly becomes impractical. With the first cost of the unitized and centralized system types being comparable, teams must consider costs related to floor area and maintenance. Airtightness is a key consideration Now let’s discuss building science. One of the biggest challenges for a project team pursuing Passive House certification is complying with the stringent building envelope air leakage rate of 0.6 air changes per hour (ach50). To meet this requirement, the air barrier system must be detailed carefully and installed continuously, so penetrations for the HRV/ERV exhaust and intake vents must be carefully incorporated into the air barrier system. For a unitized HRV/ERV system, two penetrations per apartment are required: one for exhaust, one for intake. For a centralized system, only two to six penetrations may be required for the entire building. The Cornell Tech building, for example, has 352 apartments. With a unitized ERV system, this would amount to 698 additional penetrations through the air barrier to accommodate the exterior exhaust and intake vents. With a centralized ERV system, only six penetrations through the air barrier were required to accommodate the three ERV units. According to code, these intake and exhaust vents must be separated by a minimum of 10 feet and should be 2 feet from any window openings. Properly locating vents in a dense floor plan with a limited amount of exterior wall area per apartment is a challenge. With a unitized HRV/ERV system, any failure to correctly design or install the exhaust and intake vent detail impacts air leakage for the whole building. The installation of these small penetrations can be challenging, and repetitive deficiencies have a large impact on an otherwise airtight building. Passive House International requires a whole building air leakage rate of 0.6 ach50. Cornell Tech was tested with a whole building air leakage rate of 0.14 ach50. If we assume 4 cubic feet per minute of additional air leakage per apartment from two poorly detailed or installed HRV/ERV vent penetrations, the whole building air leakage rate increases to 0.19 ach50, an 8% increase in total air leakage. This demonstrates the impact that multiple deficient penetrations have on whole building air leakage rates for a multifamily project, and a possible margin of certification failure for some Passive House projects. Comparing condensation and other factors HRV/ERVs have two ducts that penetrate the exterior walls. These ducts have cold surfaces that present condensation risks for each unit. Isolating the ducts between the HRV/ERV and the exterior walls requires careful installation of duct insulation and a vapor barrier. Simply put, the risk of additional air leakage, condensation, and poor installation scales with  the number of HRV/ERV units installed in a unitized system. Centralized HRV/ERV systems require their fair share of penetrations and additional detailing. There may be fewer air barrier penetrations, but each floor slab will be penetrated multiple times, requiring large fire-rated shafts and duct sealing. Vertical distribution for centralized HRV/ERV systems increases the length of duct runs from the HRV/ERV fan to the apartment registers. With long vertical duct runs, stack effect is increased, which makes balancing more challenging. Long duct runs also increase static pressure, which results in higher fan energy than for unitized systems. Any duct leakage in the system only exacerbates this problem. Addressing duct leakage Aerosealing ducts is critical to combat the stack effect, duct leakage, and to balance flow rates. This is an additional process where the ducts are sealed from the inside with a blown-in polymer. Furthering the installation complexity of large, centralized HRV/ERV systems is the addition of control sequencing and dampering to balance flows. In contrast, unitized HRV/ERVs are easier to commission, as they may be controlled and balanced at the unit or the register. Considering systems control and commissioning is a key decision because maintaining balanced ventilation is critical in an airtight Passive House. As the Passive House market grows and larger projects are constructed, project teams must consider HRV/ERV system arrangement. There is not a simple answer. However, the operating costs and long-term maintenance of centralized systems for a large multifamily building offer substantial benefits over a unitized system. Each project is unique and examining the pros and cons of both systems is an effective exercise to evaluate this design challenge. The chart below sums up the pros and cons of each type of system; keep in mind that first costs are similar. Unitized Pros Centralized Pros Tenant pays for ventilation. Maintains apartment comparmentalization. No floor penetrations. Lower fan power. Lower maintenance costs. Accessible for maintenance. Minimal penetrations. Reduced envelope leakage. Insulated ductwork not required. Reduced horizontal ductworks. Supply air temperature and relative humidity easily controlled. Unitized Cons Centralized Cons Increased maintenance costs. Access to apartments required for maintenance. Two penetrations per apartment, with additional envelope air leakage at each penetration. Difficult to properly insulate and air seal ductwork, resulting in a higher risk of condensation. Increased floor-to-floor height for horizontal duct runs. Reduced floor area. Reduced floor area. Owner pays for ventilation. Numerous floor penetrations. Fire-rated shafts and dampers. Stack effect. Aerosealing to reduce duct leakage. More difficult to balance. Higher fan power. Here is a link to the second article in this two-part series: “Ventilation for Passive House Multifamily Projects, Part 2.” Thomas Moore is a certified Passive House consultant and a building systems analyst with Steven Winter Associates, Inc. The second part of this post will compare HRVs and ERVs.last_img read more