Monthly Meeting

Regular Monthly Meeting

October 2019 Monthly Meeting

Time: 
Oct 1 2019 - 12:00pm - 1:30pm
Meeting Title: 

Moisture Reduction Strategies for Building Envelopes

Location: 

Aceh Community Room
Mercy Corps, 45 SW Ankeny St
Portland, OR 97204

Presenters: 

Wade Vorley

Description: 

Building envelope standards and practices have evolved over the past few decades in response to increased energy efficiency goals and a better understanding of Building Science. New materials, systems, and methods have been developed that reduce air leakage through building envelopes. Thermal protection requirements have increased and continuous insulation is often detailed better to avoid thermal bridges. A properly designed, detailed, and installed building envelope assembly utilizing these new products, systems, and standards will typically perform as expected, reduce energy usage, and provide a durable and long lasting building envelope assembly.

However, what if the installation is imperfect and air leakage occurs, or excessive moisture is introduced during construction? What if future wall or roof leaks cause water to become trapped within the assemblies? What if the components degrade over time and no longer fulfill their purpose? We have investigated many building envelope failures and found that air barrier, roofing, and waterproofing perfection is challenging to achieve. In some cases, moisture collects within the building envelope assemblies and needs to be removed

The goal of this course is to outline potential strategies to reduce or evacuate moisture from building envelopes without wholesale replacement. To accomplish this, the course will present case studies of a few existing buildings and new construction where we installed moisture monitoring data loggers to evaluate initial conditions and verify moisture reduction over time. The data loggers collected five-minute data for temperature, relative humidity, and moisture content and have been in place for over six years in some buildings. Moisture reduction methods in these studies include added thermal protection to reduce interior condensation, modification of heating and HVAC systems, and air movement strategies including directional fans, dehumidification, and in one case a roof ventilation system utilizing induction and exhaust fans. The success of these strategies was verified with empirical data.

Wade Vorley is an architect and registered roofing consultant at Wiss, Janney, Elstner Associates (WJE). Prior to joining WJE, Mr. Vorley worked as a roof installer, supervisor, project manager, and cost estimator for a roofing contractor in the Pacific Northwest. He has a master’s degree from UC Berkeley, focuses on building envelope investigation and design; and provides condition surveys, field investigations, repair designs, peer reviews, and litigation support. Mr. Vorley is published in trade journals, presents AIA accredited seminars, and conducts research. He has presented technical papers at the 2011 NRCA Symposium in Washington, D.C., the 2013 Waterproof Membranes Conference in Dusseldorf, Germany, the 2018 RCI Convention in Houston TX, and the 2018 ASTM E06/D08 Symposium in Washington D.C.

September 2019 Monthly Meeting

Time: 
Sep 10 2019 - 12:00pm - 1:30pm
Meeting Title: 

Mass Timber for Building Envelope Performance on the path towards Zero Carbon Emissions

Location: 

Aceh Community Room
Mercy Corps, 45 SW Ankeny St
Portland, OR 97204

Presenters: 

Eric Wood

Description: 

The building envelope is an integral part of architectural expression and is quickly becoming the innovative system utilized to realize carbon emission reduction goals. More and more the building envelope’s roofing, glazing, and waterproofing assemblies include Mass Timber. These assemblies are critical for ensuring durability but challenged to increase envelope performance without creating environmental barrier deficiencies.

On the path towards Zero Carbon Emissions, the implications of building envelope performance are increasingly harder to ignore, as the traditional trade off of efficiencies from the MEP systems can no longer account for the poor envelope performance. Instead, the full potential of each is needed to leverage increased carbon offsets. Mass Timber is carbon sequestering, rather than carbon intensive, and capable of replacing steel and concrete as a buildings structural frame and enclosure. Mass Timber is also far less conductive than concrete or steel, pivotal for reducing thermal bridging.

New simulation models have derived in part from the increased pressure energy codes place on envelope performance, as well as from the advances in research and increased capability of computer simulations to analyze envelope assemblies. Mass Timber’s inherent level of precision is a compelling reason for furthering digital innovation by combining simulation data with 3D digital fabrication. Structural, manufacturing, and prefabrication designers can employ new digital tools to visualize and explore innovative structural connections while ensuring strategic integration with the building structure and the major MEP building systems.

Mass Timber digital design is becoming the solution for proving constructability, predictability of schedule, and sustainability while delivering an ideal process and data necessary for compiling a comprehensive Life Cycle Assessment (LCA). Ultimately, LCA confirms the potential for achieving zero carbon emissions when building with Mass Timber, while building with wood provides a renewed capacity for architectural aesthetic expression and envelope performance.

Eric Wood joined Morrison Hershfield as a façade specialist in 2019. He has a comprehensive understanding of performance envelope systems and techniques related to mass timber structures. Eric is a technical subject matter expert within the Façade Specialist Engineering Group having spent the past several years overseeing the commercialization of mass timber and unitized building components for commercial, residential, and multi-family construction. Eric’s experience includes a variety of wood and mass timber construction projects with a specific focus on digital fabrication, specialty engineering, and innovative connections.

Eric specializes in the prefabrication of Mass Timber to facilitate the early design and detail development rationale leading to optimized supply and constructability. He has particular experience with design-assist specialty engineering, supply-installation logistics, and infield review of complex prefabricated Mass Timber projects.

June 2019 Monthly Meeting

Time: 
Jun 4 2019 - 12:00pm - 1:30pm
Meeting Title: 

Dynamic Interfaces of Water-Resistive Barriers

Location: 

Aceh Community Room
Mercy Corps, 45 SW Ankeny St
Portland, OR 97204

Presenters: 

Dr. M. Steven Doggett, Ph.D.

Description: 

Water-Resistive Barriers (WRBs) have evolved to serve compound forms and functions. Despite these advances, performance expectations still reflect over-simplistic assumptions and problematical testing methods. Interfaces with modern wall components also remain ill-defined with respect to the WRB’s primary function of liquid water resistance. Industry trends toward component integration have further strained the WRB’s intended role.

This presentation explores new findings from experimental research and computational modeling to demonstrate performance attributes of recognized WRB systems. Moisture transport and storage are reviewed for three dynamic interfaces: A) the exterior insulation interface; B) the substrate interface; and C) the fastener interface. Directives for industry research, testing standards, and product innovation are discussed.

Dr. Doggett is the Principal Scientist and founder of Built Environments, Inc. an architectural & building science consulting firm specializing in building enclosure design and research. His background includes extensive field experience with complex building enclosure failures, particularly those involving air, heat, and moisture transport. He merges this experience with innovative design practices to assist multi-stakeholders achieve more resilient, higher-performing buildings. Dr. Doggett is actively engaged in enclosure design, assembly and material research, and building simulations involving computational fluid dynamics, 3-D thermal modeling, and hygrothermal modeling. Dr. Doggett is the former chair of the Minnesota Building Enclosure Council.

April 2019 Monthly Meeting

Time: 
Apr 4 2019 - 12:00pm - 2:00pm
Meeting Title: 

Building Tour: The Portland Building

Location: 

1120 SW 5th Ave Portland, OR 97204

Presenters: 

Miro Radoynovski with DayCPM, an OTAK division / Building Enclosure Group

Description: 

The Portland Building Enclosure group will be organizing a tour of the in-progress renovation of the Portland Building. The project is located at 1120 SW 5th Ave, Portland, OR 97204. Touring guests will need to check-in, sign-in, and fill out waivers prior to the tour; please congregate under Portlandia at fifteen minutes prior to the tour Thursday, April 4th.

DLR Group and Howard S Wright are working on the new renovation of this iconic building. We ask that guests bring their own PPE, including: 1. Hard hats 2. Vests 3. Pants 4. Shoes w/ankle support 5. Safety glasses.

Designed by Michael Graves and built in 1982 as administrative offices for the City of Portland, The Portland Building is an award-winning example of Post Modern architecture. The building was later placed on the National Register of Historic Places as a building of “exceptional importance,” but it currently faces problems with its structure, exterior, and operational systems that repairs alone cannot address. To protect and preserve this major public investment, the City has initiated a $195 million project to reconstruct the Portland Building by the end of 2020. The City will create an adaptable building that will last 50-100 years, providing a productive work environment for employees and a welcoming space for community members.

The Portland Building Reconstruction project brings the City an opportunity to create a building that meets current and future needs. The completed building will provide a welcoming environment for our community and ensure viable office space to serve the public well into the future.

The Project includes:


  • Repair/replacement of the building exterior 
* Repair/replacement of electric, mechanical, plumbing, and technical systems
  • Seismic upgrades

  • Improved accessibility for all occupants and visitors

  • Workspace and safety improvements

  • LEED Gold building certification 
* Historic preservation

The tour will be limited to 30 participants in two groups. The first group from Noon to 1 and the second group from 1 to 2.

Please RSVP to John Duncan for headcount purposes.  jduncan morrisonhershfield com

March 2019 Monthly Meeting

Time: 
Mar 5 2019 - 12:00pm - 1:15pm
Meeting Title: 

Performance Upgrades in the Richards Building

Location: 

Aceh Community Room
Mercy Corps, 45 SW Ankeny St
Portland, OR 97204

Presenters: 

Aaron Davis

Description: 

Louis Kahn’s Stainless Steel Glazing System: Performance Upgrades in the Richards Building

A comprehensive renovation project was the catalyst for evaluating the exterior envelope of the Richards Medical Lab, and developing a design approach that retained the iconic visual and material characteristics while radically improving the energy performance and functional qualities of the building. This presentation will review the history and development of Kahn’s glazing system, showing the comprehensive approach that was undertaken by an integrated design team to conserve the original steel framing while optimizing the overall performance of the exterior envelope and building systems. In particular we will discuss the process undertaken to select the right glass to replace the original polished plate units – and how to successfully glaze the new lites into the existing frames – that ultimately best balanced preservation, energy efficiency, economy and constructibility.

Aaron Davis AIA is a Senior Associate at Heintges Consulting Architects & Engineers, building envelope and curtain wall consultants. Since joining the firm in 2011, he has enjoyed working with architects and owners on projects requiring a high degree of precision in pursuit of aesthetic and technical goals. His work includes bespoke façade solutions for notable projects including the Glenstone Museum (Thomas Phifer + Partners), Oceanwide Center (Foster + Partners), Corals at Keppel Bay (Studio Daniel Libeskind), and Richards Medical Laboratory (Louis Kahn / EYP).

Aaron holds a Master’s degree in Architecture from Columbia University in New York and has presented at conferences nationwide including Façade Tectonics and the National Institute of Building Science. His published work includes "Architecture Beyond Criticism: Expert Judgement and Performance Evaluation", published by Routledge.

February 2019 Monthly Meeting

Time: 
Feb 5 2019 - 12:00pm - 1:30pm
Meeting Title: 

Facilities Durability

Location: 

Aceh Community Room
Mercy Corps, 45 SW Ankeny St
Portland, OR 97204

Presenters: 

Whitney Henion, Vancouver School District

Kate Vance, Multnomah County

Tom Wharton, Port of Portland

Jake LaManna, Walsh Construction

Matt Jacoby, BRIC Architecture

Description: 

Building owners that maintain facilities must contend not only with the upfront costs of construction, but also with the long-term costs of maintenance and repairs. Often times, there are lessons to be learned about long-term building envelope performance from facilities that are held by the same owner for long periods of time. However, the lessons learned often are not readily available to designers, contractors, and managers when a new building is being designed and built.

The Portland Building Enclosure Council will host a panel discussion in which facility personnel, contractors, and architects provide insight into the long term impacts of early decisions and how they affect buildings as they age. The panel will examine the trade-offs made for various assemblies and products, cost benefits of repairs versus replacement, and information that every architect and contractor should know when embarking on the initial stages of design.

Our panel will include:

  • Whitney Henion, Vancouver School District
  • Kate Vance, Multnomah County
  • Tom Wharton, Port of Portland
  • Jake LaMana, Walsh Construction
  • Matt Jacoby, BRIC Architecture
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