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1990

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Articles 1 - 30 of 175

Full-Text Articles in Civil and Environmental Engineering

Lake Mead Nutrient Enhancement Project, Peter D. Vaux, Larry J. Paulson, Nevada Department Of Wildlife, National Oceanic And Atmospheric Administration Dec 1990

Lake Mead Nutrient Enhancement Project, Peter D. Vaux, Larry J. Paulson, Nevada Department Of Wildlife, National Oceanic And Atmospheric Administration

Publications (WR)

The Lake Mead Fertilization Project is a research program designed to investigate the potential for using large-scale artificial fertilization to enhance the game fisheries of this reservoir through an increase in the population of threadfin shad, the system's primary forage species. A substantial decline in the population of largemouth bass, together with poor condition of adult striped bass, are the two major issues affecting the Lake Mead game fisheries. Both issues have been hypothesized to be a result of an inadequate amount of forage in the reservoir. Previous studies have in turn suggested that a major factor limiting the shad …


Evaluation Of Geocomposite Pavement Panel Drains Installed In A Sand Backfill Under Revised Installation Specification, L. John Fleckenstein, David L. Allen Dec 1990

Evaluation Of Geocomposite Pavement Panel Drains Installed In A Sand Backfill Under Revised Installation Specification, L. John Fleckenstein, David L. Allen

Kentucky Transportation Center Research Report

Prior to 1989, highway edge drains were backfilled with the existing trench material and dynamically compacted with a tamping shoe. The net result was damage to the inner core of the edge drain.

In response to these problems the installation specification was revised in 1989 to insure the integrity of the drainage system. The revised method of installation consisted of moving the panel to the shoulder side of the trench and then flushing a sand slurry into the trench for backfill. Flushing the sand eliminates the need for mechanical compaction.

Since 1989, two projects have been completed using the revised …


Performance Evaluations Of Crushed Sandstone Aggregates In Bituminous Bases, David Q. Hunsucker, R. Clark Graves Dec 1990

Performance Evaluations Of Crushed Sandstone Aggregates In Bituminous Bases, David Q. Hunsucker, R. Clark Graves

Kentucky Transportation Center Research Report

The principal objective of the research effort was to develop historical performance data for bituminous sandstone pavements and bituminous limestone pavements relative to visual distress, pavement rutting characteristics, and structural condition using deflection measurements. Data relative to Road Rater deflections, pavement rutting, condition ratings based on subjective visual surveys and objective data such as skid resistance and rideability, were collected and analyzed during the course of the study and reported herein for the routes investigated.

It was concluded, based upon information gained during the evaluation period and presented in this report, that pavements constructed with bituminous sandstone bases do not …


Irish Building Services News Dec 1990

Irish Building Services News

Building Services Engineering

No abstract provided.


Evaluation Of Flexible Delineator Posts, Kenneth R. Agent, Jerry G. Pigman Dec 1990

Evaluation Of Flexible Delineator Posts, Kenneth R. Agent, Jerry G. Pigman

Kentucky Transportation Center Research Report

The objective of this study was to install a small number of lightweight metal u-channel posts with a round delineator and a small number of commonly used flexible posts and evaluate their performance. Three types of flexible posts were installed. They included two posts manufactured by Carsonite and one manufactured by Safe-Hit.

The results of the limited field tests does not support widespread use of flexible posts. Substantial durability problems were encountered with the flexible posts. Future use of flexible posts should be limited to potential high-hit areas such as gores at urban interchanges. While the durability of the metal …


Performance Evaluations Of Crushed Sandstone Aggregates In Bituminous Bases (Data Appendix To Report Ktc-90-26), David Q. Hunsucker, R. Clark Graves Dec 1990

Performance Evaluations Of Crushed Sandstone Aggregates In Bituminous Bases (Data Appendix To Report Ktc-90-26), David Q. Hunsucker, R. Clark Graves

Kentucky Transportation Center Research Report

The principal objective of the research effort was to develop historical performance data for bituminous sandstone pavements and bituminous limestone pavements relative to visual distress, pavement rutting characteristics, and structural condition using deflection measurements. Data relative to Road Rater deflections, pavement rutting, condition ratings based on subjective visual surveys and objective data such as skid resistance and rideability, were collected and analyzed during the course of the study and reported herein for the routes investigated.

It was concluded, based upon information gained during the evaluation period and presented in this report, that pavements constructed with bituminous sandstone bases do not …


Appendix: List Of Participants [1990], Kentucky Transportation Center Nov 1990

Appendix: List Of Participants [1990], Kentucky Transportation Center

Kentucky's Annual Forum on Transportation

No abstract provided.


Wrap-Up Luncheon [1990], Milo D. Bryant Nov 1990

Wrap-Up Luncheon [1990], Milo D. Bryant

Kentucky's Annual Forum on Transportation

No abstract provided.


Recruitment And Retention Of Transportation Professionals And Civil Engineers, O. Gilbert Newman Nov 1990

Recruitment And Retention Of Transportation Professionals And Civil Engineers, O. Gilbert Newman

Kentucky's Annual Forum on Transportation

No abstract provided.


Kentucky Aviation And Economic Development, Michael Flack Nov 1990

Kentucky Aviation And Economic Development, Michael Flack

Kentucky's Annual Forum on Transportation

No abstract provided.


Passenger Transit, Brenda Rice Nov 1990

Passenger Transit, Brenda Rice

Kentucky's Annual Forum on Transportation

No abstract provided.


Waterways Transportation, Dick Cirre Nov 1990

Waterways Transportation, Dick Cirre

Kentucky's Annual Forum on Transportation

No abstract provided.


Kentucky's Transportation Needs For Economic Development, David E. Smith Nov 1990

Kentucky's Transportation Needs For Economic Development, David E. Smith

Kentucky's Annual Forum on Transportation

No abstract provided.


General Session [1990], Eugene R. Mccormick Nov 1990

General Session [1990], Eugene R. Mccormick

Kentucky's Annual Forum on Transportation

No abstract provided.


Automated Pavement Distress Surveys, John Hunt Nov 1990

Automated Pavement Distress Surveys, John Hunt

Kentucky's Annual Forum on Transportation

No abstract provided.


Fast Track Concrete Paving, John Mcchord Nov 1990

Fast Track Concrete Paving, John Mcchord

Kentucky's Annual Forum on Transportation

No abstract provided.


Advantage I-75 Project, Jerry Lentz Nov 1990

Advantage I-75 Project, Jerry Lentz

Kentucky's Annual Forum on Transportation

No abstract provided.


Asphalt Materials, T. Scott Shuler Nov 1990

Asphalt Materials, T. Scott Shuler

Kentucky's Annual Forum on Transportation

No abstract provided.


Kentucky's Future Economic Growth Policy: A Legislative Perspective, John A. "Eck" Rose Nov 1990

Kentucky's Future Economic Growth Policy: A Legislative Perspective, John A. "Eck" Rose

Kentucky's Annual Forum on Transportation

No abstract provided.


Spurring Economic Development In Kentucky's Communities, Robert N. Elliston Nov 1990

Spurring Economic Development In Kentucky's Communities, Robert N. Elliston

Kentucky's Annual Forum on Transportation

No abstract provided.


Kentucky's Investment In Economic Growth, D. Jeffrey Noel Nov 1990

Kentucky's Investment In Economic Growth, D. Jeffrey Noel

Kentucky's Annual Forum on Transportation

No abstract provided.


Investments In Economic Growth: A National Perspective, Merl M. Hackbart Nov 1990

Investments In Economic Growth: A National Perspective, Merl M. Hackbart

Kentucky's Annual Forum on Transportation

No abstract provided.


Does Transportation Lead Economic Growth?, James M. Wiseman Nov 1990

Does Transportation Lead Economic Growth?, James M. Wiseman

Kentucky's Annual Forum on Transportation

No abstract provided.


Economic Development Through Advancing Transportation Technology, Charles L. Miller Nov 1990

Economic Development Through Advancing Transportation Technology, Charles L. Miller

Kentucky's Annual Forum on Transportation

No abstract provided.


Welcome And Remarks [1990], Robert E. Hemenway Nov 1990

Welcome And Remarks [1990], Robert E. Hemenway

Kentucky's Annual Forum on Transportation

No abstract provided.


Kentucky Transportation Hall Of Fame [1990], Kentucky Transportation Center Nov 1990

Kentucky Transportation Hall Of Fame [1990], Kentucky Transportation Center

Kentucky's Annual Forum on Transportation

No abstract provided.


Design Of Automotive Structural Components Using High Strength Sheet Steels Structural Strength Of Cold-Formed Steel Members Under Dynamic Loads, Chi-Ling Pan, Wei-Wen Yu Nov 1990

Design Of Automotive Structural Components Using High Strength Sheet Steels Structural Strength Of Cold-Formed Steel Members Under Dynamic Loads, Chi-Ling Pan, Wei-Wen Yu

CCFSS Library (1939 - present)

INTRODUCTION During recent years, more economic and lighter vehicles have been produced by automotive manufacturers because of the high cost of fuel. High strength sheet steels have been favorably used to accomplish the construction of such automobiles. One source of the design information for using sheet steels is provided in the AISI Automotive Steel Design Manual 1. In view of the fact that material properties and stress-strain relationships of sheet steels can be influenced by the strain rate, the material properties of three different sheet steels (35XF, 50XF, and 100XF) have been studied at University of Missouri-Rolla. This study involved …


Safety Indexes For Shear-Bond Failure Of Composite Slabs, Laurence A. Mccuaig, R. M. Schuster Oct 1990

Safety Indexes For Shear-Bond Failure Of Composite Slabs, Laurence A. Mccuaig, R. M. Schuster

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Uplift Behavior Of Purlin Systems Having Discrete Braces, Roger A. Laboube, M. Golovin Oct 1990

Uplift Behavior Of Purlin Systems Having Discrete Braces, Roger A. Laboube, M. Golovin

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Design Of Cold-Formed Steel Screw Connections, Teoman Pekoz Oct 1990

Design Of Cold-Formed Steel Screw Connections, Teoman Pekoz

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.