Civil and Environmental Engineering Commons^™

The Physical Durability And Electrical Resistivity Of Indiana Bottom Ash : Executive Summary, Te-Chih Ke

JTRP Technical Reports

This research assessed the long-term performance (durability) and the environmental effect (corrosiveness to adjacent metal structures) of Indiana bottom ashes, based mainly on laboratory investigation. The 5-cycle sodium sulfate soundness tests and the 50-cycle freeze-thaw tests were conducted to examine the physical durability. Four electrochemical characteristics (electrical resistivity, pH, soluble chloride, and soluble sulfate) were used to estimate the corrosion potential of Indiana bottom ashes.

Evaluation criteria for durability and corrosiveness of bottom ash, based on appropriate specifications for aggregates and past experiences for soils, were developed. The comparison of test results and the above criteria shows that Indiana bottom …

Biological Assessment Missouri National Recreational River

United States Army Corps of Engineers, Omaha District

A 59 mile stretch of the Missouri River between Gavins Point Dam and Ponca State Park was added to the National Wild and Scenic Rivers System by a 1978 amendment (Section 707 of the National Parks and Recreation Act) to the Wild and Scenic Rivers Act of 1968. Components of the National Wild and Scenic Rivers System are classified as wild, scenic, or recreational, based upon the amount of development existing in the river corridor at the time of designation. The 59 mile reach of the Missouri River from Gavins Point Darn to Ponca State Park was classified as recreational …

Groundwater Seepage Into The Indian River Lagoon At Port St Lucie, Ashok Pandit, Clovis Clovis El-Khazen

Mechanical and Civil Engineering Faculty Publications

A finite element program, GROSEEP, was developed to estimate the groundwater seepage from the surficial aquifer into Indian River lagoon along a selected cross-section in Port St. Lucie, Florida. The model is a general purpose model and can be used at other cross-sections. Model results using a single layer indicate that groundwater seepage could be an important freshwater source into the lagoon. Sensitivity analysis using a three-layer model predicted that among other parameters the presence of windows in the clay layers could significantly affect seepage rates into the lagoon.

Aisi Lrfd Method For Cold-Formed Steel Structural Members, Ling En Hsiao, Wei-Wen Yu, Theodore V. Galambos

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

In the design of steel buildings, the allowable stress design (ASD) method has long been used for cold-formed steel structural members in the United States Recently, the load and resistance factor design (LRFD) criteria have been developed for steel buildings using hot-rolled shapes and built-up members fabricated from steel plates In order to develop load and resistance factor design (LRFD) criteria for cold-formed steel structural members, a joint research project is conducted at the University of Missouri-Rolla, Washington University, and the University of Minnesota under the sponsorship of the American Iron and Steel Institute Based on the 1986 edition of …

Cost Comparison Of Timber, Steel, And Prestressed Concrete Bridges, Richard A. Behr, E. J. Cundy, C. H. Goodspeed

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This study was undertaken to investigate the economics of timber bridge superstructures versus traditional steel/concrete and prestressed concrete alternatives in the short-span range of 20 to 60 ft (6.1-18.3 m). Only superstructure costs were considered because substructure and abutment costs are highly site-specific. A lack of definitive data regarding service lives and maintenance costs precluded a life-cycle cost study; thus, only initial costs were compared. Representative superstructure designs were obtained for timber, steel/concrete, and prestressed concrete bridges at 20-, 40-, and 60-ft spans. Five to six northern New England general contractors performed cost estimates on these designs. Also, nine timber …

Failure Strengths Of Laminated Glass, Joseph E. Minor, Patrick L. Reznik

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Laminated glass used in architectural glazing comprises two layers of glass connected by a thin interlayer of polyvinyl butyral. Previously reported nondestructive experimental stress analyses offer evidence that laminated glass behaves like monolithic glass of the same nominal thickness except when temperatures are high. This evidence has been augmented to include failure behavior by destructive tests of a large number of laminated-glass specimens. Test results reveal that failure strengths of annealed laminated-glass specimens are equal to failure strengths of annealed monolithic glass specimens of the same nominal thickness at room temperature and decrease to about 75% of monolithic-glass strength at …

Revised Method Of Approximate Structural Analysis, Richard A. Behr, E. J. Grotton, C. A. Dwinal

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

No abstract provided.

Seal Forces In Structural Glazing Systems, C. V.Girija Vallabhan, Gee D. Chou, Joseph E. Minor

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Silicone sealants are used as structural connections between the two glass plates in an insulating glass (IG) unit and between the IG unit and the supporting mullion. These connections become an integral part of the entire glazing system, worthy of attention by structural design engineers. Since the behavior of IG units subjected to lateral pressures, such as wind, is highly nonlinear, von Karman plate equations are employed in the mathematical model developed here. Also, since the two thin glass plates are separated by a sealed air space, a complex interaction occurs between the trapped air space and the glass plates. …

Kentucky Traffic Accident Facts 1990 Report, Kentucky State Police

Kentucky Transportation Center Research Report

KENTUCKY'S TRAFFIC ACCIDENT FACTS report for 1990 is based on accident reports submitted to the Ken­tucky Accident Reporting Unit housed in the Kentucky State Police Information Services Branch, Records Section. As required by Kentucky Revised Statutes 189.635, "every law enforcement agency whose officers investigate a vehicle accident of which a report must be made . . . shall file a report of the accident . . . within ten days after investigation of the accident upon forms supplied by the bureau." The stated purpose of this requirement is to utilize data on traffic accidents "for such purposes as will …

Lateral Load Behavior Of Pile Group In Sand, Shamsher Prakash

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

No abstract provided.

Irish Building Services News

Building Services Engineering

No abstract provided.

Optimum Assessment Of Irregular Three-Dimensional Seismic Buildings, Kevin Z. Truman, Franklin Y. Cheng

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

A structural optimization algorithm based on an optimality criteria approach is presented for three-dimensional, statically and dynamically loaded steel or reinforced concrete structures. The theoretical work is presented in terms of scaling, sensitivity analyses, optimality criteria, and Lagrange multiplier determination. The structures can be subjected to a combination of static and dynamic displacement and stress, and natural frequency constraints. The dynamic analyses are based upon the ATC-03 provisions for equivalent lateral force and modal analysis procedures, or multicomponent response spectra modal analyses. Using the algorithm presented, a computer program called ODRESB-3D was developed for analysis and design of various building …

Tests Of Full Scale Brick Veneer Steel Stud Walls To Determine Strength And Rain Penetration Characteristics, Michael J. Wilson, A. S. Essawy, A. Kluge

CCFSS Library (1939 - present)

The design, construction and physical testing of five full scale (2.75 m x 5.2 m) brick veneer rain screen wall specimens are reported. Also, the documentation of the design and fabrication of a new test apparatus and of the development of test procedures are major components of the report. The test program included sequences of air pressure loading stages both with and without simulated rain to establish both the structural and rain penetration performances of the test walls. The test walls included four brick veneer/steel stud specimens and one brick veneer/concrete block specimen. Additional tests were performed on bricks, mortar …

Knowledge-Based Prototype For Improving Scheduling Productivity, Colin Othniel Benjamin, Daniel L. Babcock, N. B. Yunus, John B. Kincaid

Engineering Management and Systems Engineering Faculty Research & Creative Works

The development of efficient construction plans and schedules presents continuing challenges to construction schedulers. Knowledge-based systems offer considerable potential as computer-based planning tools to aid the development of realistic project plans and schedules. This paper outlines the development of a knowledge-based prototype system for construction planning and scheduling and evaluates its effectiveness as a tool for improving the productivity of inexperienced construction project schedulers. The prototype, developed using the M.1 knowledge engineering shell, incorporates data bases, algorithm, and heuristics that mimic the decision process of expert construction project schedulers and identifies a work breakdown structure and precedence relationships. Inexperienced schedulers …

Noninteractive Macroscopic Reliability Model For Ceramic Matrix Composites With Orthotropic Material Symmetry, Stephen F. Duffy, Jane M. Manderscheid

Civil and Environmental Engineering Faculty Publications

A macroscopic noninteractive reliability model for ceramic matrix composites is presented. The model is multiaxial and applicable to composites that can be characterized as orthotropic. Tensorial invariant theory is used to create an integrity basis with invariants that correspond to physical mechanisms related to fracture. This integrity basis is then used to construct a failure funciton per unit volume (or area) of material. It is assumed that the overall strength of the composite is governed by weakest link theory. This leads to a Weibull type model similar in nature to the principle of independent action (PIA) model for isotropic monolithic …

Integrated Truck Monitoring System, Jerry G. Pigman, John A. Deacon

Kentucky Transportation Center Research Report

The primary objectives of the study are as follows: 1) Develop functional specifications for an integrated truck monitoring system for use in Kentucky, 2) Determine the extent to which KYU numbers (unique identification for large trucks operating in Kentucky) are being displayed as required, 3) Examine the impact of the KYU numbering system on motor carrier operations, and 4) Determine the magnitude of the problems related to trucks using bypass routes to avoid inspection stations.

Accomplishments documented in this interim report include the following: 1) Field studies were conducted to determine the frequency of trucks bypassing inspection stations and compliance …

Evaluation Of Wick Stabilization Of Approach Fill Foundation (Carroll County), Bobby W. Meade, David L. Allen

Kentucky Transportation Center Research Report

The purpose of this study was to document construction procedures and evaluate the effectiveness of wick drains as a foundation stabilization method. This effort was executed by use of field inspections, photologs, and instrumentation to monitor foundation and field response. Instrumentation included a multipoint settlement gage, settlement platforms, and vertical slope inclinometers.

This procedure was judged to be successful in that 90 percent consolidation of the deep foundation occurred within approximately 100 days. Construction procedures were generally satisfactory.

Development Of A Priority Ranking System For Bridge Rehabilitation And Replacement, Theodore Hopwood Ii, Vishwas G. Oka

Kentucky Transportation Center Research Report

The main objective of this study was to review a Bridge Priority Ranking System for Bridge Replacement developed by the Kentucky Transportation Cabinet Division of Maintenance. The system ranked bridges for improvement (rehabilitation or replacement) based on a benefit/cost ratio.

The system was used to rank a large data base consisting of 267 bridges. Analysis of the rankings revealed that the ranking system gave priority to bridges having low improvement costs. Many of those had low traffic volumes and subsequently, they had high costs of improvement per vehicle served.

The equation used to compute bridge deficiency points was revised. Several …

Irish Building Services News

Building Services Engineering

No abstract provided.

Investigation Of Flow Patterns In Various Wastewater Treatment Facilities, Thomas Joseph Martin Jr

LSU Historical Dissertations and Theses

The theoretical hydraulic retention time of wastewater treatment plants is often used to predict the efficiency of treatment and to calculate operational parameters. However, these values are related to the actual hydraulic retention time. When there is a large discrepancy between the actual and predicted values, the actual hydraulic retention time can be determined by marking a parcel of wastewater and recording its passage through the system. This investigation utilized rhodamine WT, a fluorescent dye, to track the movement of wastewater through a stabilization lagoon and a rock-reed filter. The loss of rhodamine WT to sorption, biodegradation and photodegradation was …

Techniques For Improving Energy Efficiency At Water Supply Pumping Stations, Lindell Ormsbee, Thomas M. Walski, Donald V. Chase, Wayne W. Sharp

Civil and Environmental Engineering and Engineering Mechanics Faculty Publications

This report describes the application of methods presented in Engineer Technical Letter (ETL) "Energy Efficiency at Water Supply Pumping Stations'' to the Washington, DC, and vicinity water system.

Both the ETL and this report were prepared under the Water System Operation, Maintenance and Rehabilitation Work Unit (CWIS 31794) of the Water Supply and Conservation Research Program. The technical monitors for this program in the Office, Chief of Engineers, were Mr. James Ballif (DAEN-ECE-B) and Mr. Robert Daniel (DAEN-CWP-D). The work was conducted at the US Army Engineer (USAE) Waterways Experiment Station (WES), Vicksburg, Miss., and the University of Kentucky (UK) …

A Model Ordinance For Erosion Control On Sites With Land Disturbing Activities, Herpicc

Indiana Local Technical Assistance Program (LTAP) Publications

This model ordinance was developed by a task group composed of a county engineer, a county commissioner, county surveyors, land developers, and representatives of Indiana Department of Transportation, Indiana Department of Natural Resources, Indiana Farm Bureau, Indiana Department of Environmental Management, and Hoosier Heartland RC&D.

Ordination And Mapping Of Wetland Communities In Nebraska's Rainwater Basin Region, Michael C. Gilbert

United States Army Corps of Engineers, Omaha District

Forty-seven Rainwater Basin wetlands of south-central Nebraska were evaluated to provide information on vegetation composition, species assemblages determined from direct and indirect ordination methodology, and community characteristics derived from wetlands mapping. Vegetation/soil relationships were evaluated from both vegetational stand and mapping data. Seasonal and year to year vegetation dynamics were evaluated for one study site, Harvard Marsh.

Ordination of vegetational data was accomplished by use of weighted averaging and detrended correspondence analysis. Weighted average ordination results indicated wetland status for the Fillmore, Scott and Massie soil series. Occurrence of upland vegetation on hydric soils and wetland vegetation on non-hydric soils …

Preliminary Engineering, Monitoring Of Construction, And Initial Performance Evaluation: Use Of Ponded Fly Ash In Highway Road Base, David Q. Hunsucker, R. Clark Graves

Kentucky Transportation Center Research Report

This report summarizes findings of laboratory and field trial evaluations of ponded fly ash used as a component In a stabilized aggregate base course. Ponded fly ash is the fine portion of pond ash which is a by-product of a coal burning process and Is disposed by sluicing to a disposal pond.

Three stabilized aggregate base mixtures containing various proportions of dense graded aggregate, ponded fly ash, and hydrated lime were evaluated In the laboratory relative to maximum dry density, optimum moisture content, and unconfined compressive strength. The mixture that was selected for field trial evaluation had the highest unconfined …

Evaluation Of Stone Column Stabilized Embankment Foundation, Bobby W. Meade, David L. Allen

Kentucky Transportation Center Research Report

The purpose of this study was to document construction procedures, monitor field performance, and make recommendations as to the effectiveness and future use of the stone column procedure for foundation stabilization. This effort was executed by use of field inspections, photologs, instrumentation to monitor foundation and field response, and laboratory analyses of existing and possible conditions.

Instrumentation included earth pressure meters, a multipoint settlement gage, a horizontal slope inclinometer, a settlement platform, and vertical slope inclinometers. Settlement of the foundation after column construction was observed to be approximately 9 inches as compared to the predicted total settlement of 16 inches. …

Long-Term Evaluation Of Durable Lane Delineation Materials, Kenneth R. Agent, Jerry G. Pigman

Kentucky Transportation Center Research Report

The objective of this report was to summarize the long-term performance of several types of durable lane delineation materials. Polyester paint was determined to be an effective durable lane material with most use of this material being on asphaltic concrete surfaces having an average daily traffic of under 10,000. Extruded thermoplastic was also determined to be an effective durable lane delineation material with its cost limiting its use to higher volume asphaltic concrete surfaces. Either the hydrocarbon or alkyd thermoplastic formulation could be used but the alkyd formulation was observed to maintain a higher reflectivity. While not classified as a …

Appendix B: Riding High Today, Paige Daniel

Kentucky's Annual Forum on Transportation

No abstract provided.

Appendix C: Index Of Participants, Kentucky Transportation Center

Kentucky's Annual Forum on Transportation

No abstract provided.

Appendix A: Presentation Of Roads Scholars, Calvin G. Grayson

Kentucky's Annual Forum on Transportation

No abstract provided.

Kentucky's Transportation System [1989], Milo D. Bryant

Kentucky's Annual Forum on Transportation

No abstract provided.