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Energy and building codes have had significant advancement related to water vapor control including related improvements for bulk water management. This presentation will highlight and explain these coordinated energy code and building code advancements. In addition, today’s busy consultant will receive guidance and examples of the effective application for design and construct of code-compliant, durable, and energy-efficient building enclosures. Jay Crandell, PE ARES Consulting | Shady Side, MD Jay Crandell has over 30 years of experience in construction, engineering, and innovative building technology research for private- and public-sector clients. He has conducted benchmark studies of major natural disasters, as well as research to address significant structural, energy, and building science challenges. His work has helped to propel many innovative technologies into the international codes and consensus standards. He is widely published on various engineering, construction, and building science topics. Read More

With over 17 years of experience as a sheet metal architect and building enclosure consultant, Russell A. Raymond, RBEC, RRO, CDT, CEI, provides a deep dive into the world of sheet metal. This lecture will enlighten both the intermediate and advanced consultant as he passes on time-tested design nuances and installation techniques that are necessary to the success of today’s busy consultant. Russell Raymond has over 29 years of experience in the sheet metal contracting and building enclosure consulting industries. He started his career in an architectural sheet metal contracting company in Louisville, KY, and is a third-generation sheet metal tradesman. He is currently a Principal, Senior Building Science Consultant, and Department Manager for Morrison Hershfield in Houston, TX. Raymond has investigated sheet metal, roofing and waterproofing, and cladding and glazing-related failures and designed and specified roofing and sheet metal systems. He is an RBEC, RRO, CEI, a Certified TRI, Certified Level 1 Infrared Thermographer, and a CDT. In addition, Raymond was the 2014 IIBEC Volunteer of the Year. Read More

This presentation initially took place at IIBEC's 2022 International Convention and Trade Show in Orlando, Florida. The American Society of Civil Engineers ASCE has updated the wind design provisions in the 2022 edition of ASCE 7. Many of the provisions aim to simplify the use of the component and cladding design provisions, particularly in determining roof zoning and design pressures. The presentation reviews these revisions and discusses the reasons for eliminating the tabular methods, the basis of the new tornado design provisions, and updates to the wind speed maps. Donald R. Scott, PE, SE, FSEI, FASCE PCS Structural Solutions | Tacoma, WA Donald R. Scott is a senior principal with PCS Structural Solutions. He has nearly four decades of experience in the design, evaluation, and rehabilitation of building structures. He was the principal investigator for the American Society of Civil Engineers/Structural Engineering Institute (ASCE/SEI) Prestandard for Performance-Based Wind Design. Scott is chair of the SEI Codes and Standards Executive Committee, chair of the ASCE 7 Wind Load Subcommittee, member of the ASCE 7 Main Committee, and past chair of the National Council of Structural Engineers Associations’ Wind Engineering Committee. Scott is also a member of the SEI Board of Governors and a past president of the Board of Directors of the Applied Technology Council.   Read More

To comply with the energy code, designers often utilize the Prescriptive Building Envelope Option described in ASHRAE 90.1 when determining the minimum amount of insulation required within a wall assembly. In cold climates, the minimum R-Value requirement for framed wall assemblies allows designers to utilize a split insulation arrangement to meet code requirements. However, these designs often carry an elevated risk of condensation that is not explained in the text of the standard and may lead a designer to unknowingly promote detrimental insulation combinations with regard to convective condensation. A design tool has been developed based on psychometrics and ASHRAE 90.1 requirements that illustrates the ratio of continuous insulation to total insulation. The design tool currently assumes a high leakage rate; therefore, values along the pass-fail line may be overly conservative. In order to incorporate a more realistic air leakage rate and develop a more defined pass-fail criteria, our research uses software tools such as WUFI® to study the requirements offered by 90.1 to evaluate the hygrothermal performance of insulation combinations for framed wall assemblies based on the simplified exfiltration model. Hygrothermal engineering principles and the results will be presented with future publication of the design tool for the design industry. Dave Finley is involved in a wide range of structural and architectural investigations with Wiss, Janney, Elstner Associates, Inc. (WJE). His building enclosure experience includes water infiltration testing of windows, curtain walls, masonry façades, and plaza and below-grade waterproofing, as well as condensation and air leakage testing of glazed fenestrations and masonry façades. Finley is well versed in performing hygrothermal analyses using steady and transient state techniques. Additionally, he is capable of analyzing window and wall systems for two-dimension thermal conduction. Manfred Kehrer has been involved in researching, testing, and analysis of exterior enclosure and concrete systems. He has helped develop WJE’s hygrothermal laboratory and computational fluid dynamics initiative for analysis of building enclosures. Prior to joining WJE, he worked for more than 20 years at Fraunhofer IBP, Germany, in the area of hygrothermics. Kehrer was a senior building scientist at the Oak Ridge National Laboratory (ORNL), where he was in charge of a variety of types of research in building science. Since 2011, Kehrer has been the Official WUFI® Collaboration Partner for USA/Canada. Read More

Presenter: Allen Lyte, RRO W. Allen Partners, Inc., Aurora, ON Roofing membranes within a roof assembly are generally the only barrier to keep the elements out. Standard building cladding design recognizes that well-performing walls consist of layers of materials (zones) to resist wind, heat, rain, etc., to achieve the rain screen principle in wall cladding. This dual-barrier design can be applied to roofs. Protected membrane roof (PMR) assemblies can have superior performance over conventional roofs since the moisture-resistant insulation protects the primary roofing membrane from the environment. Dual-barrier design can be implemented to help reduce negative effects of water diffusing into the insulation or reducing the thermal performance by flowing underneath. Typical PMRs can be easily upgraded by the placement of a properly selected vapour-permeable drainage layer above the insulation. Read More

IIBEC is proud to partner with the U.S. Department of Energy for the Better Buildings’ Building Envelope Campaign! The campaign is an opportunity for building owners to save energy and money by recognizing the role a high-performing building envelope plays in an energy-efficient building. In this webinar, you’ll get an introduction to the campaign and be part of an interactive discussion about the new building envelope performance metric and the corresponding assessment tool. This campaign is ongoing and open to new participants. Read More

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