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Articles 3091 - 3120 of 3546
Full-Text Articles in Architecture
Jersey Bridges Falling Down?: Report On New Jersey's Bridges And An Evaluation Of The Bridge Bond Act, Teresa Ann Brode
Jersey Bridges Falling Down?: Report On New Jersey's Bridges And An Evaluation Of The Bridge Bond Act, Teresa Ann Brode
Seton Hall University Dissertations and Theses (ETDs)
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Development Of A Building Electrical Power Systems Design Specialty, Glenn T. Wrate
Development Of A Building Electrical Power Systems Design Specialty, Glenn T. Wrate
Conference Papers in Published Proceedings
Enrollment in Electrical Power Engineering courses has been in a steady decline, and many institutions have dropped power and energy conversion courses. At the same time, the demand for engineers in the field has remained constant, and in some cases has increased significantly. To meet the demand for engineers in the electrical construction sector, the Milwaukee School of Engineering and local industry have worked together to develop a sequence of courses for a Building Electrical Power Systems Design Specialty in the Architectural Engineering program. This sequence includes four courses from the Electrical Engineering and Computer Science Department: Electrical Systems, and …
Composites In Construction: Present Situation And Priorities For Future Research, Antonio Nanni, Edoardo Cosenza, Gaetano Manfredi, Andrea Prota
Composites In Construction: Present Situation And Priorities For Future Research, Antonio Nanni, Edoardo Cosenza, Gaetano Manfredi, Andrea Prota
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
This paper was written at the conclusion of the International Workshop titled "Composites for Construction: A Reality," held in Capri, Italy, July 20-21, 2001. Its objective is to collect and summarize main ideas, opinions, evaluations, and proposals that emerged during the discussions held by the participants at break-up and general sessions. For simplicity, the reporting follows the order of such sessions and includes elements from the general sessions when applicable. The paper is intended to help professionals and scientists interested in the study and implementation of composites for the built infrastructure by providing a vivid snapshot of the state-of-the-art situation, …
Permeability Performance Of High-Performance Concrete Subjected To Various Curing Regimes, John J. Myers
Permeability Performance Of High-Performance Concrete Subjected To Various Curing Regimes, John J. Myers
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Concrete technology has continued to advance throughout the years to meet the demands of designers and innovative structural systems. Traditionally, the most common means to specify durable concrete has been via specifying a maximum water-to-cementitious material ratio or a minimum cement content. With the advent of high-performance concrete (HPC), which often has higher contents of cementitious materials and a variety of admixtures, questions about permeability performance and alternative methods to specify durable concrete have arisen. The study conducted herein comments on the applicability of prescriptive specifications for HPC and investigates the influence of curing regimes and concrete temperature development during …
Guides And Specifications For The Use Of Composites In Concrete And Masonry Construction In North America, Antonio Nanni
Guides And Specifications For The Use Of Composites In Concrete And Masonry Construction In North America, Antonio Nanni
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
This paper covers the latest developments in the preparation of design guidelines, construction specifications, and inspection and quality control recommendations related to the use of composites in construction. The forms of FRP composites addressed are limited to bars and laminates for reinforcement of concrete and masonry structures (new construction and repair/rehabilitation). FRP bars are being used as the internal reinforcement in concrete members when the conventional steel bars may be undesirable for a host of reasons (e.g., corrosion), and principles for design and construction have been established and proposed to industry by the American Concrete Institute (ACI). Conversely, strengthening of …
Experimental Procedure For Testing Of Piles Under Varying Axial And Lateral Loads, Pedro Franco Silva, F. Seible
Experimental Procedure For Testing Of Piles Under Varying Axial And Lateral Loads, Pedro Franco Silva, F. Seible
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
A research program was carried out at the University of California San Diego (UCSD) to study the seismic response of piles and their connections to the pier cap. As part of this research program, an experimental procedure for testing of piles under simulated seismic loading was developed. This experimental procedure was implemented in a research program to test the as-built piles of the San Diego Coronado Bay Bridge piles in order to validate the design criteria recommended by the design team for the seismic retrofit of the Coronado Bay Bridge.
Simplified Window Glass Design Procedure, H. Scott Norville, Joseph E. Minor
Simplified Window Glass Design Procedure, H. Scott Norville, Joseph E. Minor
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
This paper presents a simplified window glass design procedure (SWGDP) as an alternative to the comprehensive window glass design procedure described in ASTM E 1300, `Standard practice for determining the load resistance of glass in buildings.' Although ASTM E 1300 provides a technically robust treatment of the strength of window glass and window glass constructions, architects and engineers will find ASTM E 1300 difficult to use. The SWGDP presented herein uses the same failure prediction methodology to characterize the annealed window glass strength that underlies ASTM E 1300. By reducing the number of basic glass strength charts to one, the …
Design Methods For Auger Cip Piles In Compression, Giuliana A. Zelada, Richard Wesley Stephenson
Design Methods For Auger Cip Piles In Compression, Giuliana A. Zelada, Richard Wesley Stephenson
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
This Paper Reports on a Study of 43 Compression Load Tests (Five Fully Instrumented) and Ten Pullout Tests of Auger Cast-In-Place (ACIP) Piles in Sand. Eight Design Methods Reported in the Literature Were Used to Predict the Measured Pile Capacities. Ultimate Load Capacities of the ACEP Load Tests Were Determined using Two Different Definitions of Ultimate Capacity and Compared with Predictions. Load Transfer Behavior Was Determined from a Study of the Fully Instrumented Pile Tests and Compared to Predicted Values. Recommendations Are Made Regarding the Design Approach Most Appropriate for These Foundations and the Best Procedure for Estimating Ultimate Capacity …
The Design And Performance Of An Evaporative Cooling Test Rig For A Maritime Climate, Ben Costelloe, Donal Finn
The Design And Performance Of An Evaporative Cooling Test Rig For A Maritime Climate, Ben Costelloe, Donal Finn
Conference Papers
Recent developments have prompted a review of the use of cooling tower based evaporative cooling technology as an effective means of cooling modern buildings. Prominent among these developments is the success of high temperature cooling systems such as radiant ceiling panels and chilled beams. At present, however, there is little published literature which gives a quantitative, in depth analysis of the performance or energy efficiency of cooling towers, used in maritime climates, in conjunction with heat exchangers and run at low approach and low wet bulb temperatures throughout the free cooling season. This lack of knowledge has meant that many …
Simulation Of Temperature And Stress Fields During Rcc Dam Construction, Ronaldo Luna, Yongfu Wu
Simulation Of Temperature And Stress Fields During Rcc Dam Construction, Ronaldo Luna, Yongfu Wu
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The worldwide experience in the construction of roller-compacted concrete (RCC) dams together with the use of numerical solutions, allows the simulation of different scenarios in a computer. It is well documented that thermal control is one of the most important problems for RCC dam construction. The dam temperature changes due to the heat produced by the internal hydration of concrete and the environmental boundary conditions influencing the elastic modulus and creep properties of concrete. The construction process was simulated to study how the temperature and stress change during dam construction. The numerical methodology considers the effect of temperature on the …
Effects Of Ozone/Hydrogen Peroxide Pretreatment On Aerobic Biodegradability Of Nonionic Surfactants And Polypropylene Glycol, Mehmet Kitis, Craig D. Adams, John Kuzhikannil, Glen T. Daigger
Effects Of Ozone/Hydrogen Peroxide Pretreatment On Aerobic Biodegradability Of Nonionic Surfactants And Polypropylene Glycol, Mehmet Kitis, Craig D. Adams, John Kuzhikannil, Glen T. Daigger
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Studies were conducted which used the ozone/hydrogen peroxide (O3/H2O2) advanced oxidation process to pretreat three classes of compounds prior to aerobic biological treatment. The study compounds included ethylene oxide/propylene oxide (EO/PO) block copolymers, polypropylene glycols (PPGs), linear secondary alcoholethoxylates (LSAES), and alkylphenolethoxylates (APEs). After preoxidation with ozone and hydrogen peroxide (added at their stoichiometric ratio), 300 mg/L as COD samples were bioassayed in aerobic batch bioassays with a mixed liquor suspended solids concentration of 1500 mg/L. It was found that unoxidized polypropylated compounds (EO/PO block copolymers and PPGs) and LSAEs tended to be biorecalcitrant, …
Improving Shear Capacity Of Existing Rc T-Section Beams Using Cfrp Composites, Ahmed Khalifa, Antonio Nanni
Improving Shear Capacity Of Existing Rc T-Section Beams Using Cfrp Composites, Ahmed Khalifa, Antonio Nanni
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
This paper presents the shear performance of reinforced concrete (RC) beams with T-section. Different configurations of externally bonded carbon fiber-reinforced polymer (CFRP) sheets were used to strengthen the specimens in shear. The experimental program consisted of six full-scale, simply supported beams. One beam was used as a benchmark and five beams were strengthened using different configurations of CFRP. The parameters investigated in this study included wrapping schemes, CFRP amount, 90°/0° ply combination, and CFRP end anchorage. The experimental results show that externally bonded CFRP can increase the shear capacity of the beam significantly. In addition, the results indicated that the …
Deformation In Concrete With External Cfrp Sheet Reinforcement, Joseph M. Tripi, Charles E. Bakis, Thomas E. Boothby, Antonio Nanni
Deformation In Concrete With External Cfrp Sheet Reinforcement, Joseph M. Tripi, Charles E. Bakis, Thomas E. Boothby, Antonio Nanni
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
A detailed experimental investigation of local and global deformations of tensile loaded, cracked, rectangular, concrete prisms reinforced with externally bonded carbon fiber reinforced polymer (CFRP) sheets was carried out. High and low modulus sheets were applied using three different thicknesses of epoxy interlayer between the sheet and concrete. It was found that the stiffness of the CFRP sheet had a dominant effect on global tension stiffening, whereas interlayer thickness had a dominant effect on local load transfer and damage formation. Thicker interlayers transferred load into through-cracked concrete over longer transfer zones, thereby increasing the spacing of subsequent cracks in the …
Local Bond-Slip Relationship For Frp Reinforcement In Concrete, Francesco Focacci, Antonio Nanni, Charles E. Bakis
Local Bond-Slip Relationship For Frp Reinforcement In Concrete, Francesco Focacci, Antonio Nanni, Charles E. Bakis
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The objective of this paper is to define a rigorous numerical method to calibrate parameters of a given local bond-slip relationship using experimental results of pullout tests, taking into account the distribution of the slip and bond shear stress throughout the bar. The proposed method involves finding parameters of a given bond-slip relationship, such that results of pullout tests can be predicted in terms of applied pullout force and consequent slip at the loaded end and slip at the free end. The method is applied to some experimental data, and the results are discussed. For the application of the proposed …
Applicability Of Ozone In Small Drinking Water Systems, Craig D. Adams, Justin Sutherland
Applicability Of Ozone In Small Drinking Water Systems, Craig D. Adams, Justin Sutherland
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The use of ozone in water treatment plants is expanding rapidly in the United States. Ozone offers excellent disinfection properties (including chlorine-resistant pathogens) and does not form trihalomethanes. Additionally, ozone can be used to achieve or control many other water quality parameters such as color, taste and odor, and inorganic and organic contaminant concentrations. Control of ozone's disinfection byproducts such as bromate (formed in high bromide waters) is required. This presentation will review the synergistic effects of ozone applicable to use in small water treatment plants.
Accumulation Of Heavy Metals By Vegetables Grown In Mine Wastes, George P. Cobb, Kristin Sands, Melissa Waters, Bobby G. Wixson, Elaine Dorward-King
Accumulation Of Heavy Metals By Vegetables Grown In Mine Wastes, George P. Cobb, Kristin Sands, Melissa Waters, Bobby G. Wixson, Elaine Dorward-King
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Lead, cadmium, arsenic, and zinc were quantified in mine wastes and in soils mixed with mine wastes. Metal concentrations were found to be heterogeneous in the wastes. Iceberg lettuce, Cherry Belle radishes, Roma bush beans, and Better Boy tomatoes were cultivated in mine wastes and in waste-amended soils. Lettuce and radishes had 100% survival in the 100% mine waste treatments compared to 0% and 25% survival for tomatoes and beans, respectively. Metal concentrations were determined in plant tissues to determine uptake and distribution of metals in the edible plant parts. Individual soil samples were collected beneath each plant to assess …
Influence Of Hydration Temperature On Durability And Mechanical Property Performance Of Prestressed And Precast High-Performance Concrete Beams, John J. Myers, R. L. Carrasquillo
Influence Of Hydration Temperature On Durability And Mechanical Property Performance Of Prestressed And Precast High-Performance Concrete Beams, John J. Myers, R. L. Carrasquillo
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Concrete technology has continued to advance throughout the years to meet the demands of designers and innovative structural systems. With the advent of high-performance concrete (HPC), which contains large amounts of cementitious materials, the investigation of the impact of concrete temperature development during hydration on concrete performance is of keen interest. Match-curing technology was used to investigate the influence of concrete temperature development during hydration on the mechanical and material property performance of prestressed and precast HPC beams. These members were fabricated for use in two recently constructed HPC bridges in Texas. The investigation was conducted in conjunction with the …
Upgrading Missouri Transportation Infrastructure: Solid Reinforced-Concrete Decks Strengthened With Fiber-Reinforced Polymer Systems, T. Alkhrdaji, Antonio Nanni, R. Mayo
Upgrading Missouri Transportation Infrastructure: Solid Reinforced-Concrete Decks Strengthened With Fiber-Reinforced Polymer Systems, T. Alkhrdaji, Antonio Nanni, R. Mayo
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
More than 40 percent of the bridges in the United States need repair, strengthening, or replacement. Because of limited funds, many states are forced to post load restrictions on their bridges as a temporary measure. Recently, fiber-reinforced polymers (FRPs) have emerged as a practical solution for repair or strengthening of highway bridges. Since there are no nationally accepted specifications for design and construction with bonded FRP reinforcement, the Missouri Department of Transportation (MoDOT) has funded a research program aimed at validating the design and analysis procedure through strengthening and testing to failure of bridges under realistic highway loading and conditions. …
Degradation And Uptake Of Benzene In Laboratory Phytoremediation Studies, Carla Ross, Lisa M. Harrison, Adrian Marsh, Lars Zetterstrom, Joel Gerard Burken
Degradation And Uptake Of Benzene In Laboratory Phytoremediation Studies, Carla Ross, Lisa M. Harrison, Adrian Marsh, Lars Zetterstrom, Joel Gerard Burken
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
In Whole-Plant Laboratory Studies, Hybrid Poplar Trees Were Shown to Impact a Variety of Fate and Transport Mechanisms for Benzene. Laboratory Experiments Investigated the Distribution of the Contaminant in the Plant Tissues, Degradation in the Soil Profile, and Volatilization from Both the Soil and Leaf Tissues. a New Testing System Was Developed that Allowed for Rapid Testing that is More Field-Representative Than Earlier Studies. Whole Plants Were Utilized in a Reactor Design that Included Both a Saturated and a Vadose Zone. the Continuous Feed Reactors Were Supplied with a Steady Influent Benzene Stream to Mimic Plume Conditions. the Presence of …