“Just Urban Design: The Struggle for a Public City” (MIT Press 2022) features a collection of chapters and case studies that apply a social justice lens to the design of urban environments. Sixteen contributors, including Rachel Berney of Urban Design & Planning and Jeff Hou of Landscape Architecture, examine topics ranging from single-family zoning and community capacity building to immigrant street vendors and the right to walk. The book is open-access and can be downloaded from MIT Press here.
Research Theme: Design & Building
Built environment scholarship at the scales of the interior space to the building
Westlake
Ochsner, Jeffrey Karl. (2014). Westlake. The Pacific Northwest Quarterly, 112(2), 68-90.
AIA publishes “Equity in Architectural Education” co-authored by Dean Renée Cheng and Laura Osburn
The American Institute of Architects (AIA) recently published a supplement to the AIA Guides for Equitable Practice titled “Equity in Architectural Education.” Renée Cheng, dean of the College of Built Environments, served as the project lead for the research and writing team, which included Laura Osburn, research scientist in construction management. The supplement argues that organizational culture is critical to achieving goals of equity, diversity, and inclusion, and is intended to inspire discussion within individual institutions, and among thought leaders…
Anthony Hickling
Anthony Hickling joins CLF with experience in environmental and social sustainability as well as nonprofit management and fundraising. His foundations in sustainable building are informed by experience at Presidio Graduate School where he received an MBA in Sustainable Solutions, as well as his work on the sustainability team at Webcor Builders in San Francisco. Through academic and professional experience he has learned to navigate the priorities of traditional business stakeholders while incorporating social and environmental externalities. From executing successful marketing plans to determining research priorities, Anthony believes that wide impact considerations and diversity of thought should be embedded into all decision-making.
Allison Hyatt
Allison Hyatt is a Researcher with the Carbon Leadership Forum at the University of Washington. Prior to joining the CLF, Allison oversaw the design development of various high performance buildings for public sector projects at Siegel & Strain Architects. With years of experience as an architect, she prioritizes forging links between architectural practice and research. As a graduate student, her research assessed metrics to compare among operational carbon savings, embodied carbon expenditures, and monetary costs of different decarbonization strategies over time. In the spring of 2022, she received her Masters degree in Design Studies with a concentration in Energy and Environment from the Harvard University Graduate School of Design.
Brad Benke
Brad Benke, AIA, is a Research Engineer at the Carbon Leadership Forum focused on developing data-driven resources to help practitioners and policymakers adopt and scale decarbonization strategies in the built environment. With a background in deep-green architecture and consulting, Brad works to synthesize and improve life cycle assessment practices and tools within the AEC industry and deliver practical solutions for low-carbon building design and construction. His recent work includes leading the CLF WBLCA Benchmark Study and developing the background data and methodologies for the CLF Embodied Carbon Policy Reduction Calculator. Brad is a former co-chair of AIA Seattle’s Committee on the Environment, and a former Senior Architect at McLennan Design, where he led diverse teams and stakeholders toward achieving decarbonization goals for buildings and organizations across the country.
Experimental Investigations and Empirical Modeling of Rubber Wear on Concrete Pavement
Emami, Anahita; Sah, Hos Narayan; Aguayo, Federico; Khaleghian, Seyedmeysam. (2022). Experimental Investigations and Empirical Modeling of Rubber Wear on Concrete Pavement. Journal of Engineering Tribology.
Abstract
Material loss due to wear plays a key role in the service life of rubber components in various tribological applications, such as tires, shoe soles, wiper blades, to name a few. It also adversely affects energy consumption, economy, and CO2 emissions around the globe. Therefore, understanding and modeling the wear behavior of rubbers are important in the design of economic and environment-friendly rubber compounds. In this study, we investigated the effect of normal load and sliding velocity on the wear rate of rubber compounds widely used in the tire treads and evaluated the wear models previously proposed for rubbers to determine the best model to predict the rubber wear rate. The sliding wear rates of different types of Styrene-Butadiene Rubber (SBR) and Isoprene Rubber (IR) compounds on a broom finish concrete slab were measured for different sliding velocities and normal loads. The experimental results were used to evaluate and discuss different wear models proposed in the literature. A new empirical model was proposed to predict the wear rate by considering mechanical properties associated with rubber wear. The experimental results revealed that the wear rate of rubber compounds non-linearly depends on the normal load or friction force, while the effect of sliding velocity on the wear rate is not significant in the 20–100 mm/s range. Moreover, traces of both mechanical (abrasion) and chemical (smearing) wear were observed on all rubber compounds.
Keywords
Tire tread compounds, rubber wear, rubber-concrete interaction, smearing wear and abrasion, wear model
Coefficient of Thermal Expansion of Concrete Produced with Recycled Concrete Aggregates
Okechi, Ikechukwu K.; Aguayo, Federico; Torres, Anthony. (2022). Coefficient of Thermal Expansion of Concrete Produced with Recycled Concrete Aggregates. Journal of Civil Engineering and Construction, 11(2), 65-74.
Abstract
This study presents a comparison between the coefficient of thermal expansion (CTE) of concrete produced with natural aggregate and that of concrete produced with recycled concrete aggregate. In order to achieve this, natural aggregate concrete (NAC) specimens were produced, tested, then crushed and sieved in the laboratory to obtain recycled concrete aggregates, which was then used in the production of recycled aggregate concrete (RAC) specimens. The RAC samples were then tested and compared to the NAC samples. The CTE testing was carried out using a AFTC2 CTE measurement system produced by Pine Instrument Company. In addition to CTE testing, the water absorption, specific gravity, and unit weight of the aggregates was determined. A vacuum impregnation procedure was used for the water absorption test. The recycled aggregate properties showed a significantly higher absorption capacity than that of the natural aggregates, while the unit weight and specific gravity of the recycled aggregate were lower than that of the natural aggregates. The average CTE results showed that both the NAC and the RAC samples expanded similarly. The results show that the CTE of RAC depends on the natural aggregate used in the NAC, which was recycled to produce the RAC. Also, there was no significant difference between the average CTE values of the RAC and that of NAC that could discredit the use of recycled aggregate in concrete.
Keywords
Coefficient of thermal expansion; Recycled concrete aggregate; Natural concrete aggregate.
Metabolist Trajectories
Oshima, Ken Tadashi. (2012). Metabolist Trajectories. Log, 24, 28 – 32.
Richard Haag: New Eyes for Old
Way, Thaisa. (2012). Richard Haag: New Eyes for Old. Sitelines: A Journal Of Place, 7(2), 6 – 8.