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There are 140 entries started with 'u'
U uf uo
Uz UAQI UBC
UCC UF ug/m3 (Unit)
UHMW UL U-LINE
ULTIMAFIC ROCK ULTIMATE BEARING CAPACITY ULTIMATE BIOCHEMICAL OXYGEN DEMAND (BODu)
ULTIMATE DISPOSAL ULTIMATE SHEAR (Slope Stability) ULTIMATE STRENGTH
ULTIMATE WILTING POINT ULTRA-FILTRATION (UF) ULTRAMARINE
ULTRAPURE WATER ULTRASONIC ULTRAVIOLET LIGHT
ULTRAVIOLET RADIATION UMTRCA UN
UN/ISDR UNACCOUNTED-FOR WATER UNBURNED LIME
UNCERTAINTY PRINCIPLE UNCONFINED AQUIFER UNCONFINED COMPRESSION TEST
UNCONFINED COMPRESSIVE STRENGTH (qu) UNCONFINED GROUNDWATER UNCONFINED PENETRATION (UP) TEST
UNCONFORMITY UNCONSOLIDATED-UNDRAINED TEST (UU Test) UNDERCONSOLIDATED SOIL DEPOSIT
UNDERCUT-SLOPE BANK UNDERCUTTING UNDERDRAIN
UNDERFLOW UNDERGROUND UNDERGROUND INJECTION
UNDERGROUND STORAGE TANK (UST) UNDERGROUND STRUCTURE UNDERGROUND UTILITIES
UNDERPINNING (Foundation) UNDERWATER UNDERWATER DRIVING
UNDERWATER INSPECTION UNDISTURBED SAMPLE UNECE
UNEP UNIFIED ROCK CLASSIFICATION SYSTEM (URCS) UNIFIED SOIL CLASSIFICATION SYSTEM
UNIFORM BUILDING CODE UNIFORM BUILDING CODE ZONING MAP UNIFORM CHANNEL
UNIFORM FLOW UNIFORM LOAD UNIFORMITARIANISM
UNIT UNIT HYDROGRAPH UNIT CELL
UNIT COHESION UNIT MIX UNIT RAINFALL DURATION
UNIT STRAIN UNIT STRESS UNIT WEIGHT OF SOIL
UNIT WEIGHT OF WATER UNIT, BASE UNIT, CGS
UNIT, ENGLISH UNIT, METRIC UNIT, PREFIXED
UNIT, SI UNIT, UNIVERSAL STANDARD UNIT-GRAPH
Units and Energy Field Units in Electrical Energy Field Units in Magnetic Energy Field
Units in Mechanical Energy Field Units in Radiation Energy Field Units in Thermal Energy Field
UNITY RULE (Radionuclide) UNIVERSAL GAS CONSTANT UNIVERSAL LAW OF GRAVITATION
UNIVERSAL STANDARD UNIT UNKNOWN CHEMICALS UNLEADED GASOLINE
UNORDERED STRUCTURE UNRESTRICTED AREA (Radiation) UNRESTRICTED RELEASE (Radiation)
UNRESTRICTED USE (Radiation) UNSATURATED FLOW UNSATURATED SOIL
UNSATURATED ZONE UNSCAR UNSTABLE
UNSTEADY FLOW UNSTEADY NONUNIFORM FLOW UNWATER
UP TEST UP TEST (Soil Testing) UPFLOW CLARIFIER
UPFLOW FILTER UPLAND UPLIFT
UPLIFT CAPACITY UPRUSH UPSETTING MOMENT
UPTAKE UPWELLING URANINITE
URANIUM URANIUM SERIES URANIUM YELLOW
URBAN URBAN CLIMATE URBAN SOLID REFUSAL
URCS UREA UREA-FORMALDEHYDE RESINS
US DOT US EPA USACE
USBR USBR EXPANSIVE CLAY IDENTIFICATION PROCEDURE USDA
USDA SOIL CLASSIFICATION SYSTEM USFS USGS
U-SHAPED DUNE USP USP-PURIFIED WATER
UST UV




ENVIRONMENTAL GEOTECHNOLOGY DICTIONARY
Edited By
Hsai-Yang Fang, Ph.D
Professor Emeritus
Lehigh University. Bethlehem, PA
Distinguished Fellow
Global Institute for Energy & Environmental Systems
The University of North Carolina at Charlotte, Charlotte, NC

Copyright Reserved 2006

Environmental geotechnology is a relatively new and interdisciplinary subject, which covers soil, water and rock and their interaction with various environmental cycles including the atmosphere, biosphere, hydrosphere, lithosphere, as well as geomicrobiosphere. To tackle this complex subject, it is necessary to have knowledge from other disciplinary fields including agricultural science, biology, environmental science, geology, microbiology, mineralogy, and physicochemistry. Therefore, a uniform glossary of terms, definitions, nomenclature, abbreviation, acronym, symbols and units is needed for general discussions, reports and documents to minimize confusion and to improve the effectiveness for the environmental aspects of geotechnical problems. Some important information is collected, compiled and edited, and in spite of careful preparation of this dictionary, there cannot be avoided some missing or misinterpreted terms, typing errors, etc. The editor hopes, however, that with the aid of suggestions and criticism, there can be improvement for a later edition.
Thanks to many government agencies, professional societies and private organizations including American Society of Civil Engineers (ASCE), American Society for Testing and Materials (ASTM), Transportation Research Board (TRB), International Society of Environmental Geotechnology (ISEG), U.S. Environmental Protection Agency (EPA), U.S. Department of Energy (DOE) for providing useful documents for preparation of the dictionary. Also thanks to Prof. Charles Ochola, Villanova University, Prof. Tae-Hyung Kim, Korea Maritime University, Ms. Eleanor S. Nothelfer of Fritz Engineering Laboratory, Lehigh University and Mr. Gustavo Borel Menezes of Global Institute for Energy and Environmental Systems (GIEES), University of North Carolina at Charlotte for their assistance during various phases of preparation of the manuscript.
Acknowledgment is made to Review Committee Members for their time and willingness to review the manuscripts.

Prof. Ronald C. Chaney, Humboldt State University, Arcata, CA
Prof. John L. Daniels, The University of North Carolina at Charlotte, NC
Prof. Jeffrey C. Evans, Bucknell University, Lewisburg, PA
Prof. T. Cassia De Brito Galvao, Universidade Federal de Minas Gerais, BRAZIL
Prof. Hilary I. Inyang, The University of North Carolina at Charlotte, NC
Dr. Abidin Kaya, URS Corporation, Honolulu, HI
Prof. Jai-Young Lee, The University of Seoul, KOREA
Prof. Irene M.C. Lo, Hong Kong University of Science & Technology, Hong Kong
Prof. Horace K. Moo-Young Jr., Villanova University, PA
Dr. Jouko Saarela, Finnish Environmental Institute, FINLAND
Prof. Robert W. Sarsby, The University of Wolverhampton, U.K.
Prof. Leonardo Zeevaert, Universidad Nacional Automoma de Mexico, MEXICO
Prof. Thomas F. Zimmie, Rensselaer Polytechnic Institute, NY

Hsai-Yang Fang
February 15, 2006

Web Edition by:
Gustavo Borel Menezes, GIEES, UNC Charlotte
Simon Chung, GIEES, UNC Charlotte

Developed by: Gustavo Borel Menezes