How about we shelve the obsessive, melodramatic, excessively speculative and borderline hysterical conversation about where the Warriors’ Kevin Durant will play next season.Instead, let’s have an obsessive, melodramatic, excessively speculative and borderline hysterical conversation about where DeMarcus Cousins will play next season.His quad injury Monday night offers an unfortunate entry point to the discussion.ESPN’s “Get Up!” crew convened Thursday morning to kick that can around. Sean …
Biomimetics (the imitation of nature) continues to promise cool gadgets and useful materials that will someday yield prized gifts under the tree. Some of them might even save your life. Combo Plate: We begin with an article on the BBC News that listed a smorgasbord of treats coming from biomimetic research. In “Biomimicry: Beaks on trains and flipper-like turbines,” technology reporter Katia Moskvitch writes, “Since the dawn of time, nature has been working hard, engineering everyone and everything to the highest standards on Earth.” The opening eye-catching photo shows caterpillars hatching out of their cathedral-like eggs, reminiscent of scenes from the documentary Metamorphosis: The Beauty and Design of Butterflies. Here’s a short list from her article of natural designs representing “just a drop in the ocean of amazing nature-designed solutions” that are finding their way into engineering labs: Dragonflies, able to propel in any direction, inspiring hovercraft Shark skin that eliminates friction Termites that build air-conditioned mounds Birds that inspired the Wright Brothers and Leonardo da Vinci Weed burrs that inspired Velcro Tree leaves that inspire solar cells Butterfly wings that are leading to better gadget displays Whale flippers that are helping model better turbine blades Lotus leaves as models for waterproof surfaces Bird beak shapes that help reduce drag on high-speed trains Spider web reflective secrets that can warn birds of glass Lisa Welch, who is working on the reflective glass, commented, “I’m sure all of the answers to what we are wanting to solve exist in some form or another, in nature.” Glass sponges for bone: Biominerals such as the glass houses in diatoms, and the bones and teeth in our bodies, are being studied for materials surgeons can use to repair bone. In “Glass sponges inspire: Hybrid material made of collagen fibers and silica as possible substrate for bone tissue culture,” PhysOrg reported on work at Georgia Health Sciences University to build substances the way diatoms, sponges and vertebrates do it. “Biomineralization is a very complicated process that is not so easy to mimic,” the article began. “The researchers once again turned to nature for inspiration,” modeling the process used by glass sponges. Bats and dolphins for sonar and ultrasound: Another PhysOrg article discussed how “biosonar” still exceeds human navigational machinery. Researchers at Tel Aviv University would like to gain ground. “Intrigued by the quality of the natural world’s biosonar over its man-made equivalents, Profs. Intrator and Simmons set out to study how biosonar animals perform echo location so quickly and accurately.” They’re trying to analyze echoes the way animals do, looking for all the information bats and dolphins glean from sound. “Animals explore pings with multiple filters or receptive fields, and we have demonstrated that exploring each ping in multiple ways can lead to higher accuracy,” Intrator said. “By understanding sonar animals, we can create a new family of ultrasound systems that will be able to explore our bodies with more accurate medical imaging.” Pitcher plant for slippery slopes: MSNBC Technology News reported on work at Harvard to imitate the slippery inner surfaces of pitcher plants, that give bugs no foothold for escaping the trap at the bottom. Just think if they succeed and put this kind of surface on the inside of the ketchup bottle. Oysters for protection: Want better bullet-proof material? Xiaodong Li (U of South Carolina) is coming closer to it, thanks to his study of mother-of-pearl (nacre) made by oysters. Nacre is able to absorb energy better than man-made surfaces. PhysOrg described how imitating the manufacture of nacre in oysters is giving Li success in his experiments. “Given the elaborate nanoscale structures that biology naturally incorporates in mother-of-pearl, the research team believes the findings could serve as a blueprint for engineering tough new materials in the laboratory,” the article said. The intricate patterns of calcium carbonate layers bound together with biopolymers is a secret that may lead to body armor that will someday save soldiers’ lives. Leaves for fuel: Robert Service (not the poet) wrote in Science (8 November 2011: vol. 334 no. 6058 pp. 925-927, doi: 10.1126/science.334.6058.925) about the attempts to mimic photosynthesis. “Artificial-photosynthesis researchers dream of using sunlight’s energy to generate chemical fuels,” his article began. “Despite progress, the approach must become more efficient and cheaper to make an impact on where the world gets its fuel.” Why does nature make difficult engineering problems look so easy? The article begins with praise for your lawn that says it all: The next time you groan when it’s time to mow your lawn, take a second first to marvel at a blade of grass. Plants are so commonplace that it’s easy to take their wizardry for granted. When they absorb sunlight, they immediately squirrel away almost all of that energy by using it to knit together a chemical fuel they use later to grow and multiply. It sounds so simple. Yet it’s anything but. Modern society runs on fossil fuels precisely because researchers have never managed to duplicate the chemical mastery of a fescue. Nano like cells do it: Although an article in the BBC News doesn’t mention biomimetics, it’s all about building tiny molecular structures for which cells are famous. “Nanoparticle hollowing method promises medical advances” is the headline. A look at the images, though, looks like kid’s alphabet blocks compared to the machinery of the cell. For a good look at that, see a stunning new animation by Vuk Nikolic on Vimeo. Bacteria for just-in-time delivery: One subcategory of biomimetics is looking at a human solution to a problem, only to find out nature had it all along. That’s what PhysOrg reported about a finding with bacteria. “In the human world of manufacturing, many companies are now applying an on-demand, just-in-time strategy to conserve resources, reduce costs and promote production of goods precisely when and where they are most needed,” the article began. “A recent study from Indiana University Bloomington scientists reveals that bacteria have evolved a similar just-in-time strategy to constrain production of an extremely sticky cement to exactly the appropriate time and place, avoiding wasteful and problematic production of the material.” Spiders for strength: British researchers couldn’t offer any success stories with manufacture to match spider webs, but they did up the ante about the difficulty. “Scientists at Oxford University and The University of Sheffield have demonstrated that natural silks are a thousand times more efficient than common plastics when it comes to forming fibres,” reported PhysOrg. How can a tiny spider beat out our best materials scientists? “Silk produced by spiders and silk moths demonstrates combinations of strength and toughness that still outperform their synthetic counterparts,” one Oxford scientist noted. As if to rub it in, he added, “Not only are silks superior to man-made fibres, they are produced at room temperature with just water as a by-product.” Try that as an experiment in chem lab. Spiders for partnership: Another spidey story on Medical Xpress revealed that researchers at Kansas State and U of Nebraska have succeeded in taking a protein from spider silk and combining it with human muscle calcium channel to produce a self-assembling peptide. The resulting hydrogels “have potential as injectable materials for medical applications, e.g., liquid injection agents that become gelatinous in the human body to keep drugs around cancerous tumors.” Spiders for music: One of the most unusual recent stories related to biomimetics is this one on PhysOrg: “Researchers link patterns seen in spider silk, melodies.” Sure enough, someone at MIT came up with a mathematical model that found analogies between spider webs and music. From sound wave to chord to riff, “The study explains that structural patterns are directly related to the functional properties of lightweight strength in the spider silk and, in the riff, sonic tension that creates an emotional response in the listener.” Finding this relationship involved modeling the “ontology logs” (ologs) between the two phenomena, a process in a field known as category theory. “This work is very exciting because it brings forth an approach founded on category theory to bridge music (and potentially other aspects of the fine arts) to a new field of materiomics,” the MIT gurus said. Tying two completely different fields together helps scientists think outside the box. “What is particularly exciting is the opportunity to reveal new relationships between seemingly disparate fields with the aim of improving materials engineering and design.” Whistle while you work, perhaps? Whether this is a category theory or category error, philosophers may want to weigh in on, but David Spivak is unabashed: “The seemingly incredible gap between spider silk and music is no wider than the gap between the two disparate mathematical fields of geometry — think of triangles and spheres — and algebra, which uses variables and equations,” he said. For example, a spider web is robust enough to avoid failure even when defects are present, and music can sound OK even when the player misses some chords in a riff. Category Theory has had success in the past with analogies between disparate concepts, Spivak explains. “It remains to be seen whether our olog will yield such striking results; however, the foundation for such an inquiry is now in place.” Note: he did not say this while strumming a spider web like a harp. Exercise: Compose “Ode to a Spider Web” and put it to music. Well, again, more wonderful ideas are pouring forth from the world of biomimetics. The evolutionists haven’t given up trying to milk it for Darwin sacrificial offerings, but they are really outsiders on this bonanza. They still try to say that Nature (personified) has had billions of years to practice and hone her engineering skills, but logical readers will slough off that useless narrative gloss like the sexy teaser ads in the sidebars of websites. In biomimetics literature, you’re more likely to hear of revolution than evolution.(Visited 22 times, 1 visits today)FacebookTwitterPinterestSave分享0
17 October 2008Spare a thought for the thousands of South Africans – and Africans – who are creating (and stockpiling) World Cup-themed products.Young KwaZulu-Natal artist Sicelo Ziqubu is creating 2010-themed papier-mache decorated thrones which are being snapped up.The Witness: Paper throneTomas Majebe from Cameroon is making a “small fortune” selling his oil-on-canvas 2010 stadium paintings at flea markets. In Garangkuwa, north of Pretoria, Peter Malherbe has spent thousands of hours building model 2010 stadiums out of – wait for it – matchsticks.In Nelspruit, Zimbabwean Wallace Marino uses beads and wire to craft his stadiums. Pretoria jeweller Ceciwe Khonje has launched a range of (Fifa-approved) 2010 white gold cufflinks.A Port Elizabeth-based ostrich hide exporter has sealed a deal with a Mexican to have soccer boots made out of ostrich leather.In Cape Town, Michael Souter heads a team of workers from an informal settlement who make 2010-themed makarabas, the hard hats worn by construction workers and – with colourful variations – South African soccer fans.And let’s not forget the vuvuzelas which have been given the green light by Fifa and will be heard around the world come June 2010.Fifa has repeatedly advised South Africans to “think outside the box” when trying to capitalise on the 2009 Confederations Cup and 2010 World Cup.“European and English fans won’t want to buy 2010 memorabilia, they will want to buy something African to remind them of the good time they had here,” says Fifa media officer Delia Fischer. “SA must decide what it wants to show the world.”And 2010 Local Organising Committee CEO Danny Jordaan says the 2010 World Cup must showcase African flair – both on and off the field.Not everyone is going to cash in on this sporting spectacle, but with South Africa’s unofficial unemployment rate hovering at around 30%, the informal sector is likely to play an important role in ensuring that the World Cup will be remembered for years to come.Urquhart is a former Fifa World Cup media officer and the current editor of Project 2010
Banking group Nedbank has announced its commitment to becoming carbon neutral. (Image: MediaClubSouthAfrica.com. For more free photos, visit the image library.) MEDIA CONTACTS • Elizabeth FlorencioNedbank Group communications+2711 294 7260 or +2783 636 7002 RELATED ARTICLES • Plastic billboard a world first • Bank honours local heroes • SA banking net spreads • Saving our vulnerable sharks• Biggest nature park in the world Janine ErasmusSouth African banking group Nedbank, already a leader in environmentally responsible practices, is to become carbon neutral by continuing to cut its greenhouse gas emissions and buying up carbon credits.Nedbank is the first South African bank, as well as the first large corporation in the country, to take this step.The development was announced on 15 September 2009 by the bank’s CEO Tom Boardman. He said the decision to go for carbon neutral status was the culmination of a long road travelled by Nedbank, which has been at the forefront of environmental issues for many years.The company is involved in a number of green initiatives already, and as far back as 1990 it set up the Green Trust, a conservation fund run in partnership with the local chapter of the World Wide Fund for Nature (WWF).In 2008 the group poured US$1.8-million (R13.6-million) into environmental initiatives under the Green Trust. Projects include, among others, the conservation of turtles in the Greater St Lucia Wetland, support for the Namibia-based Cheetah Conservation Fund, and the Master Farmers programme in the Eastern Cape, which works to improve farmers’ agricultural skills..The carbon neutral move will place Nedbank’s environmental strategies on the same level as other major international institutions such as the Deutsche Bank and the Hong Kong and Shanghai Banking Corporation.“We have measured and audited our carbon footprint,” said Boardman, “and now we know where we stand and what we have to do to offset it completely”.Comparing the climate change crisis to the worldwide financial crisis, Boardman noted a few similarities – apart from the fact that both had a global impact.In both cases, he said, the world underestimated the severity of the problem. Initial measures taken were inwardly focused and targeted at individual organisations or countries, whereas what were needed were global solutions.“If the world spent a fraction of what it put into the financial crisis on addressing climate issues, it would be an investment well spent,” commented Boardman.“Climate change is no longer merely an environmental issue,” added WWF SA climate change manager Richard Worthington, “but a developmental, economic and social issue too”.Carbon creditsIn addition to its ongoing greenhouse gas emission reduction projects, Nedbank is to completely offset its own emissions by buying carbon credits on both the Voluntary Emission Reduction and Certified Emission Reduction markets. This will cost the bank an estimated $1.36- to $2.7-million (R10- to R20-million) per year.Nedbank is expected to build a diverse portfolio of carbon projects, but will focus its investment on applicable projects in Africa.“We are not going to just go out and buy,” said Boardman, “but will look at projects that are relevant to our cause and in line with our strategy.”Green bankFor many years Nedbank has worked for the benefit of the environment and is represented on several top-level committees and task forces dealing with climate change. Nedbank is the only South African bank on the Dow Jones Sustainability Index, and has featured on the list for five years.In 2008 Britain’s Financial Times named Nedbank as the Emerging Markets Sustainable Bank of the Year for the Middle East and Africa region. The bank also sits on the United Nations Environmental Programme Finance Initiative Africa task force and participates in the Climate Change, Biodiversity and Water and Finance streams.Through its Green Affinity retail products the bank donates a portion of its charges to the Green Trust. Since the fund’s inception, Nedbank has helped raise almost R100-million for around 150 major conservation projects in South Africa.Nedbank was the first South African bank to become a signatory of the Equator Principles, and has since been followed by FirstRand Bank and the Standard Bank group.The Equator Principles is a set of international environmental and social guidelines that apply to project finance. They help financing institutions to support only those developmental projects that operate according to sound social and environmental principles.Nedbank is also a signatory to the Carbon Disclosure Project, which works with the corporate sector to encourage transparent reporting in terms of carbon emissions.The bank has a number of internal greening initiatives, among them a change from paper to electronic statements for retail banking products; recycling of printer cartridges; and recycling bins for biodegradable waste, glass and tin, plastic and polystyrene, and mixed waste.There is also a campaign which encourages staff to reduce their carbon footprints at work and at home. The annual Green Trust Staff Awards recognise employees who stand out from the rest with their efforts to change their lifestyles accordingly.Nedbank is to apply for a four-star Green Star rating from the Green Building Council of South Africa (GBCSA) for its new corporate head office building, currently under construction in Sandton, north of Johannesburg. A Green Star rating is given to buildings that comply with GBCSA energy and resource efficiency standards and are environmentally responsible in their design, construction and operation.Queries or comments? Contact Janine Erasmus at [email protected]
SharePrint RelatedVoss Margarine – Geocache of the WeekFebruary 27, 2019In “Community”Maastricht:Wandelen op en langs de stadsmuren – Geocache of the WeekApril 3, 2019In “Community”Line of Sight — In the Distance (GC4JZTK) — Geocache of the WeekMarch 19, 2015In “Geocache of the Week” Binocular’s used in finding “Who’s Watching You!!!”Binoculars and a half gallon of water. Those are the unusual tools you might need to successfully unravel a famous New Jersey, USA Multi-Cache.Who’s Watching You!!! (GC15KNG) has racked up more than 40 Favorite Points. TheSurfcaster created three stage Multi-Cache in 2007. The difficulty 2, terrain 1.5 geocache takes adventurers through the woodlands of “The Garden State.”The cache tells geocachers what they should bring along on their journey, “You will need to use BINOCULARS for the first stage if the lighting conditions are not right” and “If you are doing this cache in the middle of winter when everything is frozen solid you need to bring a half gallon of water.” “Who’s Watching You!!!”Adventurers travel only a short distance to find this cache, but each stage of the geocache leaves a lasting impression. One cacher who earned a smiley on “Who’s Watching You!!!” writes, “Stage 1 – amazed at it’s location. Stage 2 – like the craftsmanship. Stage 3 – was like a science project.”Another geocacher saved the geocache to celebrate a milestone. They write, “WOW! Wanted to make this cache my 2000th find because of its popularity with favorite points and am glad I did. A lot of work was put into this multi, and I appreciate the creativity and ingenuity used to create these caches.”Near the cache location of “Who’s Watching You!!!”Sorry – there are no spoilers about the specifics of this geocache in this blog post. What unique tools have you used to help complete a geocache?Continue to explore of some of the most engaging geocaches around the globe. Explore all the Geocaches of the Week on the Latitude 47 blog or view the Bookmark List on Geocaching.com. If you’ d like to nominate a Geocache of the Week, send an email with your name, comments, the name of the geocache, and the GC code to [email protected] Share with your Friends:More
This is Part 3 of a blog series describing construction of the Orchards at Orenco project in Oregon. The first installment was titled The Largest Passivhaus Building in the U.S. An ultra-high-performance enclosure is the heart of the Passivhaus concept. The enclosure should be close to airtight and highly insulated, with limited thermal bridging.Additionally, the enclosure should be designed to mitigate potential durability issues related to moisture. Design for moisture management is important with all construction types but becomes even more critical when wood-frame construction is used due to the moisture sensitivity of wood-based building materials.In previous posts, I’ve addressed the context and design of the Orchards at Orenco project and the construction of the building foundation. In this post, I will describe the construction of the Orchards enclosure in more detail, while providing additional commentary on specific aspects of the design. Balcony detailsThere are 36 balconies on the building, providing private outdoor living space for all residents. One of the most challenging details was how to structurally connect the balconies to the primary structure while minimizing thermal bridging and also managing water. The design solution was to provide a continuous ledger around the balcony similar to typical construction; however, the ledger is fastened to intermittent 4×8 treated wood blocking that is installed at 4’-0” spacing (see Images #25 and #27, below), so that there is a gap between the ledger and the wall sheathing.This detail allowed us to install exterior mineral wool insulation behind the ledgers and continuously over the backup wall, thereby maintaining our thermal barrier continuity at the balcony-to-wall interface except at the block locations.Prior to installing any balcony framing (including blocks), we installed the housewrap continuously over the walls at the balcony areas. The blocks were then installed over the housewrap and were subsequently fitted with saddle flashings that we integrated back into the housewrap. Metal through-wall flashing was then installed above the line of blocks at each balcony, allowing siding work to begin. The balcony joist framing and decking were installed last, after completion of the siding and trim.My next blog post will address additional aspects of the construction at the Orchards at Orenco, including the roofing, cladding, and insulation. We built a mockupConstruction of the Orchards enclosure was challenging in many ways, but the greatest challenges were the planning and coordination effort, given the atypical assembly designs and specifications and the relative complexity of the enclosure detailing. Heading into the construction phase, we were uncertain how tight we could get the building (58,000 square feet of floor area in three stories), so we planned a week of float into our schedule to allow for testing and remedial air-sealing work, if necessary. After completing our enclosure coordination meetings and submittal process, we constructed a large exterior wall mockup on site (see Image #2, below), and it was here that we worked out many of the loose ends of the detailing and finalized some small tweaks to the design details prior to execution on the actual building.The exterior walls are framed with 2×10 Douglas fir studs and sheathed on the exterior with 1/2-inch plywood (see Image #3, below). To reduce thermal bridging at the walls as much as possible, we used advanced framing techniques such as 24-inch-on-center stud spacing and optimized framing around rough openings. Innies, outies, or in-betweenies?During the design phase, the team studied where best to position the windows within the wall. We considered placing the exterior face of the window frames flush with the face of the sheathing, to allow the exterior insulation layer to extend over the frames. Several iterations of the PHPP model indicated significant benefit to “overinsulating” the windows in this manner, so the team agreed with this approach.We then encountered some constructability issues, however, especially at the interface between the window sill and the wall. With typical detailing, the face of the window frame is positioned outward an inch or two from the face of the sheathing, which allows for the metal sill flashing to be joined to the window frame outward of the sill pan flashing. This is important to maintain free drainage from the sill pan.With the Orchards detail, we had to bring the horizontal leg of the metal sill flashing into the sill pan area to create the sealed joint with the window frame. To do this, we needed to shim the windows higher than is typical to provide the clearance in the sill pan area to allow for the joint but also to allow for free drainage from the sill pan. We used two stacked, stepped shims to accomplish this and it worked quite well when we installed the windows (see Image #13, below). Delivery of the SureSill cap flashing was delayedAt the window head, the architect’s detail called for a rigid PVC head flashing. A specific SureSill flashing product was specified due to its three-dimensional configuration (see Figure #22, below). Typically we use brake-formed metal flashing at the window head; however, there was concern from the design team that metal flashing would cause too much thermal bridging.The construction team thought that it would be relatively easy to source the SureSill flashing from a local supplier, and that proved true when we ordered three 48-inch-long pieces for our mockup. However, after working through the mockup, the team determined a single 10-foot long flashing piece covering both the window head and the adjacent balcony door head would work best. There was a glitch: The local supplier did not have the 10-foot lengths of flashing in stock. And then when we placed an order with the Florida-based manufacturer, we were told that they didn’t have the quantity we needed and put us on back order.The product is actually manufactured in China and, after several communications with Florida, we learned that our flashing was literally on the slow boat to the U.S.! At that point, we were scheduled to begin installing siding in a week. Not good.To add a little more pain to our suffering, the order got hung up for a few extra days in customs. Six weeks later the flashing arrived on site and the siding installers began their work.Fortunately we had been able to move forward with WRB installation well ahead of the siding and got the building in the dry without delay, but the delay on the flashing delivery had some unanticipated impacts on our proposed sequencing of work.Lesson learned: Make extra sure that thermally non-conductive flashing material is needed for your Passivhaus design before you specify it. And, if so, make sure they have adequate stock at your supply house of choice. The Orchards team worked closely during the design phase to identify the optimal enclosure design, striving to achieve the best balance of performance, constructability, and cost. A more in-depth examination of key project details and a discussion of our collaborative process during design and construction can be found in a paper delivered earlier this year at the BEST 4 Conference: Five Not So Easy Pieces – Designing and Building the Passive House Enclosure. Testing the doors and windows for water entryThe patio/balcony doors are essentially just large tilt-turn windows, configured as doors. Exterior doors typically do not have the airtightness and water resistance to match windows, but these are not your typical doors! With three compression gaskets, the sash seals tightly to the frame, and the rainscreen design will manage water extremely well.The owner’s representative commissioned testing of the doors and windows by an independent agency, and the doors passed field water tests up to the specified requirement of 6 psf. After passing the required level of watertightness, the test agents ran the pressure up to 12 psf and the doors still did not fail.After completing the window and door installation, we installed housewrap (Tyvek CommercialWrap) over the sheathing, taking care to integrate the housewrap with the window and door flashings to ensure proper overlaps for water management (see Image #24, below).Combined with the self-adhered membranes and various flashings, the Tyvek serves as the primary water-resistive barrier (WRB). Given the high level of airtightness and insulation in these walls, and thus the lack of drying potential, it is critically important to prevent water infiltration into the moisture-sensitive areas of the wall system.An intensive quality control (QC) effort was essential to ensuring proper installation of the WRB and all related flashings. Nick Kurkov – one of our most highly skilled enclosure specialists – was assigned the QC role, working closely with our superintendent Jeremy Brooks, who shouldered primary responsibility for managing all of the work on site. RELATED ARTICLES The Largest Passivhaus Building in the U.S.Placing a Concrete Foundation on Rigid Foam InsulationMultifamily Passivhaus Project Starts in Oregon The wall sheathing is our air barrierThe plywood sheathing serves as the primary air barrier material at the exterior walls. Once the majority of the wall framing was up, our crew moved around the building, taping the sheathing joints with Siga Wigluv, a specialty tape product manufactured in Switzerland and engineered specifically for air sealing (see Image #4, below). We typically used 4-inch-wide tape for the flat seams and 6-inch-tape at the inside and outside corners. At the outside corners, the plywood often butts together roughly; we were concerned about the void behind the tape, which could lead to tears or ruptures, so we placed a small foam backer rod in those corners before applying the tape.The Wigluv tape is vapor-permeable, adheres extremely well to the plywood substrate, and was excellent for the application. On previous projects where we’ve pursued a high level of airtightness, we’ve used a similar sealed sheathing approach; however, we’ve used wet silicone sealant at the sheathing joints and seams. Although the tape is quite expensive, the installation is much simpler and faster than the sealant method, so labor costs are reduced significantly. Triple-glazed windowsWe used EuroLine 4700 Series ThermoPlus tilt-turn windows and doors, manufactured just outside of Vancouver, B.C. (see Image #7, below). These windows feature tilt-turn operation and are triple-glazed, highly airtight, and well-insulated (U-factor = 0.14). The frame material is a fiberglass-vinyl hybrid developed by Rehau, a German polymers company.The interface between the windows and walls plays a critical role in airtightness. On many buildings, this location is where much of the air leakage occurs. To provide air-barrier continuity at the Orchards project, we installed a wet sealant between the window frame and the rough opening flashings all around the interior perimeter of the window frames.To flash the rough openings, we used a self-adhered membrane product, Protecto Seal 45 (see Image #8, below). We specified this peel-and-stick membrane because it has a foil facing that facilitates adhesion with the silicone sealant we used, Dow Corning CWS. This sealant adheres extremely well to the foil facing and also to the fiberglass-vinyl window frames.The team agreed that it was prudent to add another seal around the exterior perimeter of the window frames at the jambs and the head to minimize the potential that exterior moisture could enter the gap between the window and the wall. Mike Steffen is a builder, architect, and educator committed to making better buildings. He is vice president and general manager of Walsh Construction Company in Portland, Oregon.
Initial treatment of an MCL injury includes ice to the area, elevation of the joint above the level of the heart, non-steroidal anti-inflammatory drugs (NSAIDs), and limited physical activity until the pain and swelling subside. A hinged knee immobilizer should be used to protect the ligament as it heals. The extent of this type of injury is usually excessive stretching of the ligament causing the pain and tenderness.Review Date:6/13/2010Reviewed By:Linda J. Vorvick, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington School of Medicine; and C. Benjamin Ma, MD, Assistant Professor, Chief, Sports Medicine and Shoulder Service, UCSF Department of Orthopaedic Surgery. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
zoom The labor union of South Korea’s shipbuilder Hyundai Heavy Industries (HHI) said that it would launch an industrial action as a response to the company’s plans to split its businesses, according to Yonhap News Agency.The union claims that the latest development in HHI’s plans to reorganize its businesses into six separate companies next year would lead to a sell-off.Namely, under the earlier announced plans, the businesses would be split into shipbuilding-offshore plant-vessel engines, electric and electronics, construction equipment, renewable energy, robotics, and services.Expected to be finalized by the first half of 2017, the move would be conducted as part of the shipbuilder’s self-rescue scheme as HHI aims to increase competitiveness and improve its financial status.After nine quarters of posting losses, Hyundai Heavy Industries returned to black in the first quarter of 2016 when it booked an operating profit of KRW 325.2 billion.The company managed to maintain its earnings streak in the third quarter of the year as it posted a net income of KRW 334.4 billion for the period, while its net income for the first nine months of 2016 jumped to KRW 971.1 billion, compared to a net loss of KRW 985.1 billion seen in the corresponding period a year earlier.World Maritime News Staff
zoomImage Courtesy: Stena Bulk The detained tanker Stena Impero has finally been released and is sailing to Dubai, according to the ship’s owner Stena Bulk.“Stena Bulk and Northern Marine Management confirm the Stena Impero and its crew have been released,” Erik Hanell, President and CEO of Stena Bulk, said.“The vessel has left the port of Bandar Abbas and is transiting to Dubai for the crew to disembark and receive medical checks and de-briefing.”Hanell further noted that the families of crew members have been informed and the company is making arrangements for the repatriation of the sixteen seafarers “at the earliest possible opportunity.”Iran’s Ports & Maritime Organization said that, although the ship ban was lifted, the process of investigating violations and announcing the final results of the legal proceeds is ongoing.The 46,575 cbm ship was detained near the Strait of Hormuz for alleged marine violations on July 19, only weeks after the Royal Marines and Gibraltar authorities seized the Iranian tanker Adrian Darya 1, previously named Grace 1, due to suspicions of violating EU sanctions on Syria.Iran later released seven of the 23 Stena Impero crew members as the ship’s owner, Stena Bulk, requested the removal of non-essential personnel.