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Engineering | Del E. Webb School of Construction

Faculty Directory

Sam Ariaratnam

Sam Ariaratnam, Ph.D., PE, P.Eng.
Professor and Program Chair of Construction Engineering
Ph.D., University of Illinois at Urbana-Champaign

Research and teaching expertise: infrastructure management and rehabilitation, trenchless construction methods

Samuel Ariaratnam is an expert on trenchless technology and horizontal directional drilling and was named the “2012 Trenchless Technology Person-of-the-Year” by Trenchless Technology Magazine. He has published more than 200 technical papers, holds three patents, co-authored five textbooks, and is active in numerous professional organizations. In 2003, he was presented with the Young Civil Engineer Achievement Award from the University of Illinois at Urbana-Champaign. He is a past recipient of the John O. Bickel Award from the American Society of Civil Engineers and was named to the Phoenix Business Journal’s prestigious “Top Forty Under 40” list in 2006.


Steven Ayer

Steven Ayer, Ph.D.
Assistant Professor
Ph.D., The Pennsylvania State University

Research and teaching expertise: utilization of augmented reality to improve engineering education, utilization of mixed reality as a tool for improving construction and facility management

Before coming to ASU, Steven Ayer was an instructor at The Pennsylvania State University. He has worked for Clark Construction Group in Bethesda, Maryland, Bentley Systems, Inc., at University Park, Pennsylvania, the Gilbane Building Co. in State College, Pennsylvania, and the Pennsylvania Department of Conservation and Natural Resources.

Wylie Bearup

Wylie Bearup, Ph.D.
Professor of Practice, Beavers-Ames Chair and chair of Construction Management
Ph.D., University of Illinois at Urbana-Champaign

Research and teaching expertise: Civil engineering, construction management

Wylie Bearup joined ASU in July 2014, marking his third professional career. He spent 14 years with the City of Phoenix as city engineer and director of the Street Transportation Department. He also served 24 years in the U.S. Army Corps of Engineers, retiring in 2000 as a lieutenant colonel. Bearup holds both a bachelor’s and master’s in civil engineering, and is a registered professional engineer in Arizona.

Al Chasey

Al Chasey, Ph.D., PE
Associate professor
Ph.D., Virginia Tech

Research and teaching expertise: controlled environment construction project management, advanced technology facilities

Allan Chasey, the Sundt Professor of Alternate Delivery and Sustainable Development, built the Building Information Modeling curriculum at ASU. He serves as director of ASU’s Construction Research and Education for Advanced Technology Environments, a research consortium of companies representing advanced technology facility design and the construction industry. He is a registered professional civil engineer in Arizona, an OSHA Construction Outreach Trainer, and a LEED AP.

Oswald Chong

Oswald Chong, Ph.D.
Associate Professor
Ph.D., The University of Texas at Austin

Research and teaching expertise: sustainable design and project planning, eco-efficiency and technical metabolism, sustainable engineering knowledge systems and clusters

Oswald Chong came to ASU in 2014 from the University of Kansas, where he was an associate/assistant professor. He worked in the tunneling industry for nearly six years. He founded the International Conference on Sustainable Design, Engineering and Construction, the Institute of Sustainable Engineering Knowledge, and the Elsevier Journal of Knowledge and Information Modeling for Sustainable Science, Design and Engineering. He advises government agencies in several countries on issues pertaining to carbon emissions, energy efficiency, sustainability, information technology and productivity.


Aaron Cohen, M.S., CPC
Associated General Contractors Lecturer
M.S., DePaul University

Research and teaching expertise: heavy construction equipment, methods and materials

Aaron Cohen is an expert in trenchless utility pipeline construction and has extensive industry experience in the management of heavy/civil construction and engineering projects. He has developed and taught a variety of courses, incorporating new computer applicaitions. He was the president and owner of Apollo Trenchless in Lombard, Illinois, for more than six years. The company focused on the trenchless installation of municipal pipelines.

Mounir El Asmar

Mounir El Asmar, Ph.D.
Assistant Professor
Ph.D., University of Wisconsin-Madison

Research and teaching expertise: sustainable building performance, integrated project delivery, cost engineering, performance analysis of sustainable construction practices

Mounir El Asmar joined ASU in 2012. He developed conceptual cost-estimating tools now required for all high-profile Wisconsin Department of Transportation projects and mathematical models that support decision making for design-build team selection. El Asmar completed the first quantitative performance assessment of the emerging integrated project delivery system. He is co-director of ASU’s National Center of Excellence of SMART Innovations for Urban Climage and Energy. SMART stands for Sustainable Materials and Renewable Technologies.

Jim Ernzen

Jim Ernzen, Ph.D., PE
Associate Professor
Ph.D., University of Texas at Austin

Research and teaching expertise: alternate project delivery methods, project management and safety, reinforced concrete design

Jim Ernzen joined ASU in 1996 and was director of the Del E. Webb School of Construction from 2005-2009. He served 21 years in the U.S. Army Corps of Engineers. He is the academic co-chairperson of the Project Delivery Methods Task Force in the Alliance for Construction Excellence. In 2004, he developed new curriculum in concrete industry management that brought major funding and national recognition to the school. He has received a Lifetime Achievement Award

Edd Gibson

G. Edward “Edd” Gibson Jr., Ph.D., PE, NAC
Ph.D., Auburn University

Research and teaching expertise: front-end planning, risk management, construction productivity, organizational change, dispute resolution

G. Edward “Edd” Gibson joined ASU in 2009 as the program chair of the Del E. Webb School of Construction. He was director of the School of Sustainable Engineering and the Built Environment 2011 to 2018, and has led more than $9 million in funded research. He has several years of industry experience, has taught on the university level for more than 20 years and has delivered more than 180 short courses to industry.

David Grau Torrent

David Grau Torrent, Ph.D.
Assistant Professor
Ph.D., The University of Texas at Austin

Research and teaching expertise: sustainable design and construction, information technologies, craft labor productivity, prefabrication and modularization, lean construction, uncertainty, project controls

David Grau Torrent was an assistant professor at The University of Alabama, and has been the recipient of numerous teaching and research awards. He has worked in private industry for more than seven years, as head manager for heavy industrial projects and as director of a large engineering department. He has led large interdisciplinary and multicultural teams on projects in South America, Africa and Europe.

Kraig Knutson

Kraig Knutson, Ph.D.
Assistant Professor
Ph.D., Arizona State University

Research and teaching expertise: electrical construction fundamentals and project management, construction planning and scheduling

Kraig Knutson has worked for Motorola, Intel, Lafferty Electric and was the president and owner of Desert Southwest Electric for nine years.

Anthony Lamanna

Anthony J. Lamanna, PhD, PE, F.ACI, F.ASCE
Associate Professor
Program Chair, Del E. Webb School of Construction
Sundt Professor of Alternative Delivery Methods and Sustainable Development
Ph.D., University of Wisconsin – Madison.
(480) 727-0155,

Research and teaching expertise: Anchorage to concrete, sustainable development, strengthening, repair, retrofit, and adaptive reuse of existing structures

Joining the SSEBE faculty in 2017, Lamanna began his teaching career at Tulane University in New Orleans. After Tulane University closed its engineering programs in response to Hurricane Katrina, he started his own consulting firm specializing in repair, retrofit, and adaptive reuse of existing structures. While consulting he taught evening courses as an adjunct professor at the University of New Orleans. Learn more

Kristen Parrish

Kristen Parrish, Ph.D.
Assistant Professor
Ph.D., University of California, Berkeley

Research and teaching expertise: integrated project delivery, engineering education, lean construction, energy-efficiency in commercial buildings, decision-making systems

Kristen Parrish joined ASU in 2012 and is a sustainability scientist in the Global Institute of Sustainability. She was a scientific engineering associate at the Lawrence Berkeley National Laboratory and a lecturer at the University of California, Berkeley. She is interested in novel design processes that financially and technically facilitate energy-efficient buildings. She received a Celebration of Engineering & Technology Innovation award from Fiatech in 2007.


Kenn Sullivan, MBA, Ph.D.
Associate Professor and Co-Director, Performance Based Studies Research Group
Ph.D., University of Wisconsin-Madison

Research and teaching expertise: performance measurement, risk management, best value contracting, accountability systems, facilities management

Kenneth Sullivan has conducted his research across the project life cycle, including design, construction and facility management. It is applied at both organization and project levels, including contracts, risk management, project management and accountability systems. ASU has applied many of his concepts internally and estimates a value impact of more than $10 million a year due to the realized efficiencies. He was awarded the Top 5 Percent of Engineering Faculty Award in 2009.


Pingbo Tang

Pingbo Tang, Ph.D.
Assistant Professor
Ph.D., Carnegie Mellon University

Research and teaching expertise: automatic data processing and interpretation, 2-D and -3D imaging technology, automated geometric information retrieval, quality assessment of BIM and spatial data, scientific workflow and urban systems engineering

Pingbo Tang joined ASU in 2012 from Western Michigan University, where he was on the civil and construction engineering faculty. He was a postdoctoral researcher at the mapping and GIS lab at Ohio State University. He received the 2013 CEE Recent Alumnus Achievement Award of Carnegie Mellon University.

Ed Weaver

Ed Weaver, PE
Senior Lecturer
M.C.E. – North Carolina State University

Research and teaching expertise: contracts and specification for concrete construction, concrete paving for airfields and roadways, concrete and masonry safety

Ed Weaver has more than 25 years experience working with industry in the areas of residential construction, concrete building construction, and concrete roadway, airport, and bridge construction acting as a project manager and resident engineer. He joined ASU in 2007, after seven years on the Construction Engineering and Management faculty at North Carolina State University. He is an authorized Occupational Safety and Health Administration educational trainer.

Avi Wiezel

Avi Wiezel, Ph.D., PE
Associate Professor
Ph.D., Technion-Israel Institute of Technology

Research and teaching expertise: buildability modeling, information technology in construction, construction education, leadership in construction management

Avi Wiezel came to ASU in 1995. He held several managerial positions with construction and engineering firms in Europe and the Middle East. His activities resulted in continuous productivity improvements averaging 15 percent per year for the units in which he was in charge. Wiezel has taught in four languages on three continents (Asia, Europe and America) to students of all levels, ranging from vocational education to doctoral students. Wiezel’s interests range from computer modeling of human skills in construction, to engineering education and leadership.