T. Leslie Youd is an American

geotechnical engineer Geotechnical engineering is the branch of civil engineering concerned with the engineering behavior of earth materials. It uses the principles of soil mechanics and rock mechanics for the solution of its respective engineering problems. It als ...

and earthquake engineer, specializing in

soil liquefaction Soil liquefaction occurs when a cohesionless saturated or partially saturated soil substantially loses strength and stiffness in response to an applied stress such as shaking during an earthquake or other sudden change in stress condition, in ...

and ground failure. He currently lives in

Orem, Utah Orem is a city in Utah County, Utah, United States, in the northern part of the state. It is adjacent to Provo, Lindon, and Vineyard and is approximately south of Salt Lake City. Orem is one of the principal cities of the Provo-Orem, Utah Me ...

Education

Youd received his

BES BES or Bes may refer to: * Bes, Egyptian deity * Bes (coin), Roman coin denomination * Bes (Marvel Comics), fictional character loosely based on the Egyptian deity Abbreviations * Bachelor of Environmental Studies, a degree * Banco Espírito San ...

civil engineering Civil engineering is a professional engineering discipline that deals with the design, construction, and maintenance of the physical and naturally built environment, including public works such as roads, bridges, canals, dams, airports, sewage ...

from

Brigham Young University Brigham Young University (BYU, sometimes referred to colloquially as The Y) is a private research university in Provo, Utah. It was founded in 1875 by religious leader Brigham Young and is sponsored by the Church of Jesus Christ of Latter-day ...

in 1964. He then attended

Iowa State University Iowa State University of Science and Technology (Iowa State University, Iowa State, or ISU) is a public land-grant research university in Ames, Iowa. Founded in 1858 as the Iowa Agricultural College and Model Farm, Iowa State became one of the n ...

where he received his

PhD PHD or PhD may refer to: * Doctor of Philosophy (PhD), an academic qualification Entertainment * '' PhD: Phantasy Degree'', a Korean comic series * ''Piled Higher and Deeper'', a web comic * Ph.D. (band), a 1980s British group ** Ph.D. (Ph.D. albu ...

in civil engineering in 1967. He performed post doctoral study in

soil mechanics Soil mechanics is a branch of soil physics and applied mechanics that describes the behavior of soils. It differs from fluid mechanics and solid mechanics in the sense that soils consist of a heterogeneous mixture of fluids (usually air and wat ...

and engineering

seismology Seismology (; from Ancient Greek σεισμός (''seismós'') meaning "earthquake" and -λογία (''-logía'') meaning "study of") is the scientific study of earthquakes and the propagation of elastic waves through the Earth or through other ...

from 1975 to 1976 at

Imperial College of Science and Technology Imperial College London (legally Imperial College of Science, Technology and Medicine) is a public research university in London, United Kingdom. Its history began with Prince Albert, consort of Queen Victoria, who developed his vision for a cu ...

in London.

Research

Youd's research has been primarily concerned with the phenomenon of

, and the associated lateral spreading which can occur. Youd has published over 140 research papers. Youd's best-known papers are on the prediction of the magnitude of lateral spreading.

Awards and honors

Youd was elected to the

National Academy of Engineering The National Academy of Engineering (NAE) is an American nonprofit, non-governmental organization. The National Academy of Engineering is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy ...

in 2005. Youd was made an honorary member of the

American Society of Civil Engineers American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, pe ...

in 2006, an honor bestowed upon fewer than 0.2% of its membership. He received the Distinguished Alumni Award in 2011 at Iowa State University.

Patents

Youd earned patent #4,840,230 for a system to retrievably install instruments into a borehole.

References

{{DEFAULTSORT:Youd, T. Leslie Place of birth missing (living people) Year of birth missing (living people) Living people Brigham Young University alumni Brigham Young University faculty Iowa State University alumni American civil engineers Geotechnical engineers Members of the United States National Academy of Engineering