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Presenter: Marcus Dell, PEng, RDH Building Sciences, Inc., Burnaby, BC The Canadian building codes provide requirements for the minimum structural standards to which roof assemblies in high snow load locations need to be designed. However, the building codes (Part 9 in particular) do not include specific requirements for design of these roofs for resistance to water ingress and resistance to damage caused by snow movement. Based on the number of failures the authors have reviewed, we suggest that design changes are required. Marcus discusses common problems caused by high snow loads, snow movement, air leakage, and the often-associated ice damming and water ingress. He also discusses solutions that have been implemented. Comparison of monitoring results from a repaired and an unrepaired roof assembly (within the same residential complex) will be used to illustrate the importance of airtightness in reducing the temperature of roof assemblies and mitigating the resultant ice damming. Marcus also introduces the concept of “double-drained” sloped roof assemblies and discuss a case study where this approach has been successfully used to eliminate a systemic water-ingress problem at a high-end residential home located at a Canadian ski resort. Read More

This presentation was initially presented at IIBEC's 2021 Virtual Spring Symposium.  There are unique risks & opportunities in a design‐build project. From pre‐design through construction completion, the speaker will discuss the different benefits & challenges of this delivery method and provide methods to increase the likelihood of success for all participants. Each participant in a design‐build project has distinct roles and responsibilities. When a key player fails to understand their part in a project, it can lead to significant problems during & well‐after it concludes. How does a building enclosure consultant’s role differ from a design professional in responsible charge? What does an Owner need to know & what risks are there down the line, if an Owner fails to live up to its contractual obligations? How can a contractor mitigate risk & increase the likelihood of success by utilizing their design professional, building enclosure consultant, & subcontractors effectively? Lawsuits are common & and the risk‐reward equation complex. It can help to understand some behind‐the‐scenes details on real‐life litigation matters. Whether you are an architect, owner, contractor, or consultant, understanding the reasons projects fail as well as how they can succeed will allow you to enter into a design build project with insight, & an increased likelihood of success. Read More

Rooftop amenity spaces can offer building owners significant value. This presentation explores key roof amenity design decisions that warrant scrutiny early in the design phase, including waterproofing selection, drainage coordination, energy conservation, fire resistance, wind resistance, maintenance and fall protection, and associated building code requirements in both new and retrofit applications. John Karras is a professional civil engineer with more than 14 years of combined design and construction management experience with commercial projects. His expertise encompasses building enclosure design, consulting, construction phase services, and investigation services—in particular, creatively collaborating with design and construction teams to navigate roofing and waterproofing challenges. Sarah Rentfro received her BS from the University of Maryland and her MS from Stanford University. She has contributed to a variety of building enclosure projects in the Mid-Atlantic and Southeastern states, including several vegetative roofing, plaza, and amenity roofing assignments. Rentfro’s work includes design consultation, field investigation work, and construction administration. Read More

Multistory, wood-framed buildings are ubiquitous in modern construction throughout North America, particularly for multifamily residential construction, but also for light commercial. Specific cladding problems can occur if special attention is not given to appropriately detail these building enclosure interfaces. This paper and presentation discuss the causes for these problems, the lack of existing development currently existing within the industry, and the need for such detailing for various cladding types. The current state of the industry does not formally recognize or address the issue of shrinkage and elastic shortening of the vertical members within these structures. Warren R. French, F-IIBEC, RBEC, PE French Engineering, LLC | Spring, TX Warren R. French is a registered professional engineer in 20 states, as well as a Registered Building Enclosure Consultant (RBEC) through IIBEC. He has extensive experience with design peer reviews, as well as numerous forensic investigations pertaining to exterior cladding systems for hundreds of mid-rise, wood-framed, multifamily residential projects. Read More

This presentation was initially provided at the 2021 Convention in Phoenix, Arizona Delegating the design of portions or even the entirety of the building enclosure to specialty contractors has become common practice. However, issues with the delegated design process persist throughout the industry. How can project participants take full advantage of the benefits of delegated design while minimizing risk? This presentation will draw from a combination of research and professional experience to assist designers, contractors, owners, building enclosure consultants, and building enclosure commissioning providers (BECx Providers) with the delegated design process. We will provide a brief overview of the motivations for using delegated design, common problems associated with the process, and inconsistent policies and requirements in varying jurisdictions. We will also outline strategies for successfully implementing delegated designs within both traditional and modern project delivery methods. In traditional design-bid-build projects, specifications play a critical role in defining the expectations for project team members. Meanwhile, newer project delivery methods ensure specialty designers and contractors are contracted early in the design process. With the advent of building enclosure commissioning, early project involvement of building enclosure consultants and BECx Providers can add value in the form of additional quality assurance to protect stakeholder interests. Demetria Boatwright, CDT Raths Raths and Johnson | Willowbrook, IL Demetria Boatwright is a technical staff member with the structural engineering team at Raths, Raths & Johnson, Inc. She has experience with a variety of projects involving condition assessment, field investigation, forensic research, and documentation of structural components and systems and distressed buildings. She is an enrolled Professional Engineer Intern with the state of Illinois and holds a Construction Document Technologist (CDT) certification. She is an active member of the Structural Engineers Association of Illinois (SEAOI), as a part of the Women in Structural Engineering (WiSE) committee, and serves on the communications committee for the Construction Specification Institute Chicago Chapter (CSI Chicago). Patrick Reicher, REWC, REWO, SE, CCS, CCCA Raths Raths and Johnson | Willowbrook, IL Patrick Reicher is a principal with Raths, Raths & Johnson, Inc. He has experience with the forensic investigation, evaluation, and repair design of existing building enclosures; and building enclosure consulting and commissioning for new construction projects. Reicher is a structural engineer in Illinois and a professional engineer in several states. He is also a Registered Exterior Wall Consultant, Registered Exterior Wall Observer, Certified Construction Specifier, and Certified Construction Contract Administrator. He currently serves on several committees and task forces for the International Institute of Building Enclosure Consultants (IIBEC) and the Fenestration and Glazing Industry Alliance (FGIA). Read More

This course was initially presented at the 2022 International Trade Show and Convention in Orlando, FL.  What is the business case for achieving a greater level of diversity and inclusion at your company? A certified diversity professional will provide answers to this question and much more. The session will begin with a data-driven presentation of the business case for diversity, followed by common questions and a review of strategies companies can begin implementing. Finally, attendees will be taken through an action planning exercise. At the end of the presentation, a panel of representatives from IIBEC’s Diversity and Inclusion Task Force will address the audience. Dana is the founder and CEO of The Sleeper Group. She is a Certified Diversity Professional (CDP®). The Institute for Diversity Certification’s CDP® credential is the gold standard in the diversity and inclusion profession. Dana works with nonprofits, small businesses, and multinational clients to conduct cultural assessments, improve hiring practices, provide diversity training, implement supplier diversity tracking, develop eLearning curriculum, and more. Read More

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