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1.  About the ProjectOne of the most prestigious national pavilions at Expo 2020 Dubai, The German Pavilion, represented the Federal Republic of Germany's commitment to innovation and sustainability. Designed by renowned Berlin-based LAVA Architects, this 4,600 m² architectural showcase demonstrated Germany's leadership in environmental technology and intelligent building solutions through its unique "forest of steel poles" design.Project Specifications:Location: World Expo 2020 Dubai, UAEBuilding Owner: German Federal Ministry for Economic Affairs and EnergyArchitect: LAVA Architects, BerlinFacade Contractor: Future Glazing LLC, UAEMain Contractor: ARGE Deutscher Pavilion EXPO 2020 Dubai GbRInstallation Date: June 2021Exhibition Period: 6 months with over 3 million international visitorsTotal Pavilion Area: 4,600 m²FutureX Eclipse™ Intelligent Glazing Area: 113 m²2. The ChallengeFuture Glass was tasked with creating intelligent facade elements that would perform flawlessly in Dubai's extreme desert climate while maintaining perfect environmental control for millions of international visitors. The architects required a building envelope that could respond instantly to rapidly changing conditions including sandstorms, intense solar radiation, and temperatures exceeding 45°C.The project demanded breakthrough glazing technology that could eliminate mechanical shading systems while providing instant environmental adaptation. The design called for individual glass panels to operate independently whilst maintaining overall design coherence across the pavilion's complex geometry. Additionally, the system needed to be maintenance-free, withstand sandstorm conditions, and deliver consistent performance throughout the six-month exhibition period without any mechanical intervention.Given the prestigious nature of this international exhibition space, any failure or performance degradation would have significant reputational impact, making reliability and consistent operation absolutely critical.3. The OutcomeThe FutureX Eclipse™ installation delivered exceptional environmental control, enabling Campus Germany to maintain perfect occupant comfort for international visitors while showcasing German innovation in intelligent building technology. The electropolarization system responded instantly to Dubai's challenging environmental conditions, providing seamless transitions between maximum transparency and sophisticated solar protection in one second or less.The installation demonstrated zero mechanical shading requirements across the entire facade system, with individual 1.5-meter wide rotatable glass elements operating flawlessly throughout the exhibition period. The success of this project established new benchmarks for intelligent glazing performance in extreme climatic conditions and proved that breakthrough electropolarization technology could transform architectural vision into responsive, high-performance building envelopes.The pavilion's environmental control system impressed over 3 million visitors and received international recognition for its innovative integration of intelligent building technology with sophisticated architectural design.4. Products UsedFutureX Eclipse™ Electropolarization Switchable Glass System:Surface Area: 113 m² of intelligent glazing elementsQuantity: 61 individual switching unitsGeometry: Rectangular configurations with rotational capabilityConfiguration: 28 fixed glass panels, 4 standard doors, and 29 intelligent folding door elementsSwitching Speed: ≤1 second response timePerformance: Neutral colour throughout all switching statesTechnology: Eclipse® electropolarization switching layer with controlled electrical field modulationControl System: Individual panel control with building automation integrationEnvironmental Rating: Designed for extreme desert climate operation including sandstorm resistance

IntroductionSheet Steel Roong and SidingLightweight Steel FramingIsolate the Steel and Wood ComponentsAvoid Use of Pressure Treated WoodFastenersMany buildings will include wood members in applicationssuch as sill plates, splash boards, strapping, purlins, door orwindow bucks, and posts. In some of these end-uses it is arequirement that the wood be chemically treated (pressuretreated) to extend the service life.Designers and builders need to be aware that changes in theavailable wood perservatives may impact the durability ofany connected steel components or fasteners.Eective January 1, 2004 the Environmental ProtectionAgency (EPA) banned the use of Chromated CopperArsenate (CCA) as a preservative in treated lumber forresidential construction. This was done in an eort to reducethe use of chromate and arsenic thereby mitigating thepotential health and environmental problems. The woodpreservative industry has been switching to alternativewaterborne compounds including Sodium Borate (SBX),Alkaline Copper Quat (ACQ), Copper Azole (CBA-A and CA-B),and Ammoniacal Copper Zinc Arsenate (ACZA).Unfortunately, research has indicated that ACQ, CBA-A, CA-Band ACZA, the new generation copper-based products, aremore corrosive to galvanized steel than the former CCA.Since ACQ is becoming the predominant preservative in use,the discussions in this paper will refer to it exclusively.The purpose of this Fact Sheet is to convey the recommendations of the sheet steel industry for the application of steelproducts with ACQ pressure treated wood.