| A Contractor's Introduction to the Federal Acquisition System |
12 AUG 2005 |
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| Authors:
Andrew J. Sullivan; MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING
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 | In general, the intent of Government contracting is to provide an equal opportunity for anyone to get Federal work. The process of selection is not restricted. This is "fair" to all, and promotes the free market system. Contracting between public and private entities, especially with the Federal Government, varies significantly from contracting between private parties. Actions that are legitimate in private contracting are not allowed in the public sector. The ... |
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| Terrorism and its Impact on the Construction Industry |
MAY 2005 |
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| Authors:
Scott Kosnick; MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING
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| This paper focuses on the impact that the 9/11 terrorist attacks have had on the U.S. construction industry. The paper breaks the construction project life cycle down into three phases -- Initiation, Design, and Procurement/Construction -- and examines the impact the attacks have had on each one. In terms of the Initiation Phase of construction, the attacks have had an impact on the kinds of projects that are being funded ... |
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| Planning and Implementation of Non-Potable Water Reuse Projects at U.S. Naval Installations |
AUG 2003 |
189 pages |
| Authors:
Joshua B. Malkin; MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING
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 | With the passage of Executive Orders 12902 and 13123, the U.S. Navy has been forced to develop water conservation programs and evaluate how water is used at each of its installations. The central goal of these orders is to reduce potable water consumption at federal facilities. Water reuse and recycling has been listed as a best management practice for achieving this goal. However, only a handful of Navy facilities have ... |
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| Centrifuge Modelling of Two Civil-Environmental Problems |
17 JUL 2001 |
6 pages |
| Authors:
Deborah J. Goodings; MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING
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| Research Problem 1: Frost heave and thaw induced settlement in silt and silty clay developing over a year have been modelled correctly using a geotechnical centrifuge with tests requiring less than a day. In these tests, freezing model tests in clay have been conducted. Experimental results indicate the following: freezing regime influences depth of freezing, magnitude of heave, and characteristics of the ice; specimen preparation affects heave only through its ... |
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| Sanitary Considerations for Contingency Operations |
16 JUN 97 |
52 pages |
| Authors:
Christopher J. Honkomp; MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING
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| Military forces are frequently called upon to accomplish missions that involve temporary housing of military and civilian personnel for varying periods of time. This paper addresses the sanitary aspects of providing proper living conditions for military troops, temporarily displaced civilians and refugees. The primary focus is on the collection, storage, removal and treatment of human waste, and provisions for water and power supply to support these systems. |
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| Remediation of Lead contaminated Soil at Greenbury Point, Annapolis, Maryland |
APR 97 |
120 pages |
| Authors:
Kathryn A. Stewart; MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING
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| The remedial investigation is satisfied through compilation of information required to adequately characterize Greenbury Point. Information includes data on lead, applicable regulatory requirements, soils types, contamination, site maps, field investigations, utility drawings, history, archeology, and natural resources. The feasibility study is satisfied through examination of remedial options. Various treatment technologies are screened for effectiveness in reducing the lead contamination or risks associated with the lead contamination. These include in-situ technologies, ... |
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| Characteristics and Treatment of Wastewater Generated During Underwater Hull Cleaning Operations of U.S. Navy Ships |
10 DEC 96 |
58 pages |
| Authors:
Donna J. Forbes; MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING
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| For the last 15 years the U.S Navy has been using an underwater diver-operated brush mechanism to clean marine fouling on ship hulls. During this operation, it has been shown that 1 to 2 mils of antifouling paint (which is 40-50 percent cuprous oxide by weight) are removed, resulting in the discharge of up to 1300 pounds of copper into the surrounding surface waters. This paper reviewed and summarized the ... |
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| A Check on Scaling Laws for Physical Modelling of Geotechnical Freeze- Thaw Effects Using the Centrifuge |
96 |
9 pages |
| Authors:
Deborah J. Goodings; MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING
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| Experimental data collected support the theorized scaling laws that predict that frost heave and thaw settlement in soil developing over one winter can be physically simulated over a matter of hours by freezing and thawing soil while rotating it on the arm of a geotechnical centrifuge. Different soils, ground water levels, and temperature regimes have been physically modelled at different scales. Comparison of an existing Army numerical model of heave ... |
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| Construction Productivity Improvement at a Construction Battalion Unit |
03 NOV 95 |
54 pages |
| Authors:
Mary J. Helinski; MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING
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| The objective of this study is to improve the OBUs productivity, quality and competitiveness using a combination of OPI, BPl and reengineering techniques. This paper will organize the CBU to conduct this type of program, select, analyze and streamline/reengineer five specific processes, identify ways to measure and control these processes, and recommend future courses of action. (MM) |
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| Vertiport Capacity - Analysis Methods |
AUG 95 |
77 pages |
| Authors:
Yeon-Myung Kim; Paul Schonfeld; Jasenka Rakas; MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING
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| This report presents a methodology for analyzing vertiport capacity and delays. Based on available information, deterministic models were developed to estimate vertiport capacity, analytic queuing models were developed to estimate the delays at vertiports during steady demand periods, and simulation models were developed to estimate delays during peak periods when traffic exceeds capacity. A practical capacity, defined as that traffic volume at which average delays are four minutes per operation, ... |
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| Customer Involvement in the Design Phase of Construction |
95 |
24 pages |
| Authors:
Thomas B. Tryon; MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING
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| The principals and tools of Total Quality Management (TQM) have gradually made their way into the construction process as a whole. Various phases of the process, mostly large size projects, have experimented with TQM tools, team building, and customer involvement and have found success. Here, the intention is to present the reasons for this success and discuss how they may be applied to smaller projects which are found at the ... |
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| Evaluation of Project Selection Techniques for Pavement Network Maintenance and Repair |
94 |
34 pages |
| Authors:
Thomas L. Wood; MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING
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| Different approaches have been suggested for determining the optimal mix of repair projects for a pavement network. These methods range from random selection to sophisticated mathematical optimization models. This paper presents an analysis of several questions regarding the effectiveness of three possible selection methods. First, the performance of three separate single year project selection methods on different size networks is assessed over a broad funding spectrum. The results indicate that ... |
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| Environmental Issues Associated with the Department of Defense Base Realignment and Closure (BRAC) Program |
23 AUG 93 |
35 pages |
| Authors:
Craig S. Hamer; MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING
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| The purpose of this paper is to take a comprehensive look at the environmental restoration issues surrounding the implementation of the Department of Defense's Base Realignment and Closure (BRAC) Program. Environmental problems at DoD sites present some unique challenges because environmental priorities must be integrated with the national security missions of each DoD Service. Still environmental hazards must be dealt with before the military bases can be transferred of sold ... |
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| Soil Improvement Through Vibro-Compaction and Vibro-Replacement |
28 JUN 91 |
66 pages |
| Authors:
Christopher J. Griffith; MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING
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| The majority of construction has been done on, in, or with soil. With the increase in environmental concerns and availability of suitable construction sites decreasing, the need to utilize what were once thought of as poor soil areas for construction is increasing. With the advent of ground modification techniques, soil can be extended. The basic concept of soil improvement, specifically drainage, densification, and reinforcement were developed long ago and remain ... |
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| Constructability Improvement: Making Effective Use of Construction Lessons Learned |
91 |
74 pages |
| Authors:
Robert H. Morro; MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING
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| Expert knowledge and lessons-learned in the construction phase of a project are not being effectively fed back to the design and construction phases of subsequent projects. The advancement of construction since ancient times has been predicated on the communication of lessons-learned. Anecdotal story telling has evolved into case studies and formal systems for the classification and dissemination of lessons-learned. While past efforts have focused on the design phase, opportunities for ... |
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| Geotechnical Centrifuge Modeling of Explosion Induced Craters - A Check for Scaling Effects |
07 JUL 88 |
43 pages |
| Authors:
D. J. Goodings; W. L. Fourney; R. D. Dick; MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING
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| One hundred twenty-one model tests of explosion induced craters in dry sand were conducted using small charges of PETN detonated at accelerations between 1g and 101g; ninety-six were found to be useful in analysis. Extrapolation to prototype dimensions indicates that for half-buried charges, crater volume, V, is a function of explosive weight, W to the 0.84 power, and crater radius and depth are functions of W to the 0.28 power. ... |
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| University Research Instrumentation Program. Equipment for Instrumentation of Bridge Rehabilitation and Geotechnical Explosives Testing |
23 NOV 87 |
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| Authors:
D. J. Goodings; B. Ayyub; MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING
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| The report describes the performance criteria sought and the system selected for data acquisition on two quite different civil engineering research facilities: one for testing composite structural section with application to bridge rehabilitation, and one for geotechnical centrifugal modelling. It also outlines the initial applications of the systems. |
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| Development of Probabilistic Rigid Pavement Design Methodologies for Military Airfields |
DEC 1983 |
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| Authors:
M. W. Witczak; J. Uzan; M. Johnson; MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING
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| The current Corps of Engineers design procedures for rigid airfield pavements is based on the Westergaard free edge stress slab theory, and a proposed procedure is based on the multilayer elastic theory. These two design procedures have been expanded to airfield pavement designs expressed in probabilistic and reliability terms. Further developments were required in these procedures to make the analysis more practicable. Two major investigations were conducted: (a) Evaluation and ... |
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| Probabilistic and Statistical Methods for Determining Rock Mass Deformability Beneath Foundations: An Overview, |
SEP 1983 |
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| Authors:
C. W. Schwartz; MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING
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| This report ignores larger questions of site exploration and characterization and concentrates instead on the more restrictive problem of determining rock mass deformability at a point given some set of quantitive parameters for the rock at that point. Emphasis will be on predictive methods and on those descriptive methods that provide insight into the fundamental mechanisms underlying the mass behavior. The focus of the discussion will be the rock foundation ... |
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| Equivalent Granular Base Moduli: Prediction |
NOV 1981 |
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| Authors:
Brian E. Smith; Matthew W. Witczak; MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING
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| A simple, but accurate, technique to determine the equivalent one layer modulus for unbound aggregate material in a flexible highway pavement that accounts for the nonlinear behavior of the granular material has been developed. The solution is based upon predictive regression equations developed from an analysis of multi-layered elastic-theory computer solutions. The equivalent granular moduli is a function of all pavement layer parameters influencing the bulk stress in the granular ... |
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| Survey of Bridge-Oriented Design Software. |
JAN 1980 |
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| Authors:
David R. Schelling; MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING
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| A comprehensive study of current bridge design practice was carried out in order to determine the criteria for selection of appropriate applications software. The study provided the basis for establishing fundamental selection criteria for the evaluation of existing bridge design software. Using the criteria, 204 existing programs (and systems) were evaluated for potential use in the prototype system. From this initial group, twelve programs in four general application areas (superstructures, ... |
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| The State of the Art. Bridge Protective Systems and Devices. |
01 Oct 1978 |
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| Authors:
Kenneth N Derucher; Conrad P Heins; Ralph Mancill; Jr T; MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING
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| The report is intended as an aid in the design of bridge protective systems and devices. The report includes: (1) factors considered in design and type of systems used; (2) advantages and disadvantages of seven types of fendering systems; (3) material properties of fendering systems; (4) design parameters; (5) hand calculation and computer applications; and (6) conclusions and recommendations of state-of-the-art study. (Author) |
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Reports by Corporate Author
