E. V. Richardson

Colorado State University

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Daryl B. Simons

Colorado State University

J. R. Richardson

Cornell University

P. F. Lagasse

University of Winnipeg

James D. Schall

Care Resource

Billy L. Edge

Auckland District Health Board

Wayne Clyma

Colorado State University

Lyle W. Zevenbergen

Tetra Tech (United States)

Steven R. Abt

Colorado State University

Carl F. Nordin

NIHR Surgical Reconstruction and Microbiology Research Centre

Stanley R. Davis

Jacobs (United States)

Cooperative Institutions

Kitt Peak National Observatory

Jet Propulsion Laboratory

Harvard University Press

University of Washington

Colorado State University

United States Geological Survey

National Oceanic and Atmospheric Administration

United States Department of the Interior

NOAA National Weather Service

University of Colorado Boulder

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Resistance to Flow in Alluvial Channels

Journal of the Hydraulics Division (1960)

Daryl B. Simons E. V. Richardson

Paper presents initial results of flume study of alluvial channels; detailed classification of regimes of flow, forms of bed roughness, and basic concepts pertaining to resistance to flow; description of experimental equipment and procedure; criteria for washout of dunes and for decrease of resistance to flow; hysteresis observed at changes in dune bed.

Flume

Flow resistance

Hydraulic roughness

Hysteresis

Alluvial fan

Flow conditions

Washout

10.1061/jyceaj.0000479

Cite

Citations (41)

MONITORING AND PLANS FOR ACTION FOR BRIDGE SCOUR: INSTRUMENTS AND STATE DEPARTMENTS OF TRANSPORTATION EXPERIENCES

Transportation research circular (2003)

E. V. Richardson J E Pagan-Ortiz James D. Schall G R Price

There are more than 484,000 bridges over waterways in the U.S. Bridge Inventory. In 1988 the Federal Highway Administration (FHWA) issued a Technical Advisory (TA) to guide states in evaluating bridges over waterways for vulnerability to failure from scour. The evaluation to date has identified 26,140 bridges as scour-critical. These bridges require replacement or countermeasures to protect them from failure. The TA recommends that a Plan of Action (POA) be developed for each scour-critical bridge. Monitoring a bridge for scour, combined with a POA that details procedures if scour threatens a bridge, is an acceptable countermeasure. Research sponsored by the FHWA and Transportation Research Board has developed several fixed and portable scour-monitoring instruments. Fixed instruments are low-cost sonar, buried stainless steel pipe with a magnetic sliding collar, and float-out cylinders with radio transmitters. These instruments can use solar panel with battery for power, data loggers to store the data, and telemetry to send the data to central locations so personnel can act if the bridge is in danger of failure. The portable instruments include sounding weights, rods, fathometers, and geophysical devices. This study describes the instruments and experience with their installation.

Bridge (graph theory)

Bridge scour

Float (project management)

Source

Cite

Citations (4)

Studies of flow in alluvial channels: basic data from flume experiments

Daryl B. Simons E. V. Richardson

Flume

Source

Cite

Citations (2)

Pakistan slide set 2 [Bangkok]

E. V. Richardson

Source

Cite

Citations (0)

I-5 bridge collapse, CA 3/10/95

E. V. Richardson

Bridge (graph theory)

Source

Cite

Citations (0)

Venezuela folder 1 - December 1968 trip - Puerto La Cruz, Anaco, Rio Orinoco, Rio Morichal Largo, Rio Aro, Rio Tigre, Rio Amana, Rio Guanipa, Rio Tonora, Rio Caroni and Guri Dam site

E. V. Richardson

Source

Cite

Citations (0)

Investigation and expert witness for Water Supply and Storage Co., Inc. and Northern Colorado Conservation District in the case of National Forest instream flow claims in water Division 1 Water Court 1985 to 98

E. V. Richardson

Water storage

Expert witness

Source

Cite

Citations (0)

Suspension of Large Concentrations of Sands

Journal of Hydraulic Engineering (1988)

Hyoseop Woo P. Y. Julien E. V. Richardson

Existing methods based on the diffusion theory have been extended to determine the sediment concentration distribution for large concentrations of sand. The modifications for volumetric concentrations ranging from 4 to 20% include decreased fall velocity, and increased viscosity and specific weight of the suspension. The sediment concentration profiles are sensitive to the velocity profiles and the fall velocity of sediment particles. In turbulent flows, either a power law or a two‐layered logarithmic law can be used to describe the velocity profiles and the sediment difiusivity. The proposed method accurately depicts the deviation from the Rouse equation at large concentrations of sands, and the agreement with sediment concentration profiles measured by Einstein and Chien is excellent. The proposed numerical solution gradually reduces to the relationships of Karim and Kennedy, and Rouse as the volumetric concentration decreases below four percent.

Suspension

Turbulent diffusion

Shear velocity

10.1061/(asce)0733-9429(1988)114:8(888)

Cite

Citations (58)

International and emeritus faculty, Everett V. Richardson, Ph.D., Hon.D.WRE, F.ASCE, Civil Engineering 2005

E. V. Richardson

Source

Cite

Citations (0)

Pakistan slide set 5 - Swat Valley

E. V. Richardson

Source

Cite

Citations (0)