Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- Missouri University of Science and Technology (738)
- California Polytechnic State University, San Luis Obispo (448)
- University of Nebraska - Lincoln (308)
- Technological University Dublin (113)
- University of North Alabama (86)
-
- United Arab Emirates University (71)
- Association of Arab Universities (52)
- The British University in Egypt (48)
- Western Kentucky University (45)
- Syracuse University (44)
- Indiana State University (31)
- University of Nevada, Las Vegas (24)
- Oral Roberts University (22)
- Kennesaw State University (17)
- Purdue University (15)
- American University in Cairo (14)
- Beirut Arab University (13)
- University of Arkansas, Fayetteville (13)
- University of Southern Maine (13)
- City University of New York (CUNY) (12)
- East Tennessee State University (12)
- Clemson University (8)
- Louisiana State University (8)
- Rhode Island School of Design (8)
- Old Dominion University (7)
- Portland State University (7)
- University of the Pacific (6)
- Munster Technological University (5)
- Faculty of Engineering, Mansoura University (4)
- Roger Williams University (4)
- Keyword
-
- Architecture (83)
- University Architecture (80)
- University of North Alabama history (80)
- University Buildings (72)
- College Campuses in Alabama (71)
-
- Sustainability (57)
- Construction (46)
- University of North Alabama (41)
- Concrete (40)
- Design (38)
- Engineering (35)
- Rheology (27)
- Hospital (26)
- Western Kentucky University (24)
- Florence State Teachers College (23)
- City of Faith (22)
- Oral Roberts (22)
- Citiplex Towers (21)
- Medical Complex (21)
- Noise (21)
- Oral Roberts University (21)
- Prayer and Medicine (21)
- Architectural Engineering (20)
- BIM (20)
- Healing (20)
- Retrofit (20)
- Structure (17)
- Reinforced concrete (16)
- Self-consolidating concrete (16)
- Energy (15)
- Publication Year
- Publication
-
- Civil, Architectural and Environmental Engineering Faculty Research & Creative Works (662)
- Architectural Engineering (436)
- Durham School of Architectural Engineering and Construction: Faculty Publications (219)
- Documents (82)
- Durham School of Architectural Engineering and Construction: Dissertations, Theses, and Student Research (74)
-
- Journal of Engineering Research (41)
- Conference papers (36)
- Master's Theses (29)
- Theses (29)
- Articles (28)
- All-Inclusive List of Electronic Theses and Dissertations (26)
- The Bridge Newsletter (24)
- City of Faith (22)
- Thesis/ Dissertation Defenses (22)
- Architecture Senior Theses (20)
- Construction Management (17)
- WKU Archives Collection Inventories (16)
- Emirates Journal for Engineering Research (15)
- Capstone Reports (14)
- Theses and Dissertations (14)
- Civil, Architectural and Environmental Engineering Scholarly Productivity Reports (13)
- ENTC 2160: Architectural CAD (11)
- Architecture and Planning Journal (APJ) (10)
- Bachelor of Architecture Theses - 5th Year (10)
- Faculty Publications (10)
- Other Resources (10)
- Publications and Research (10)
- Community Design Center Project Reports (9)
- Masters Theses & Specialist Projects (9)
- Ogden College of Science & Engineering Publications (9)
- Publication Type
- File Type
Articles 2161 - 2190 of 2295
Full-Text Articles in Architecture
Comparison Of Linear And Nonlinear Seismic Drift Histories For Midrise Steel Frames, K. Z. Truman, C. Pantelides, Richard A. Behr, Abdeldjelil Belarbi
Comparison Of Linear And Nonlinear Seismic Drift Histories For Midrise Steel Frames, K. Z. Truman, C. Pantelides, Richard A. Behr, Abdeldjelil Belarbi
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The linear and nonlinear seismic responses for two midrise office buildings of five- and 24-storeys were generated by two independent research groups using three commercial analysis packages, ABAQUS, SAP90 and DRAIN-2DX. The results indicate that a variability of up to 25% occurred between the independent research groups' seismic responses. Originally, these models and analyses were generated for the purpose of aiding in the development of load histories for the seismic testing of architectural glass at the University of Missouri-Rolla. The independent researchers were provided with the same structures, accelerograms and basic modelling assumptions and were directed to perform both linear …
Edge Strength Of Window Glass By Mechanical Test, Abdeidjelil Belarbi
Edge Strength Of Window Glass By Mechanical Test, Abdeidjelil Belarbi
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
No abstract provided.
Compression Response Of Cracked Reinforced Concrete, Abdeidjelil Belarbi, Thomas T.C. Hsu
Compression Response Of Cracked Reinforced Concrete, Abdeidjelil Belarbi, Thomas T.C. Hsu
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
No abstract provided.
Teaching Civil Engineering Design: Observations And Experiences, Charles Darwin Morris, Roger A. Laboube
Teaching Civil Engineering Design: Observations And Experiences, Charles Darwin Morris, Roger A. Laboube
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Civil engineering design is an inspired activity. It offers the engineer a high degree of autonomy to conceive or create a unique, state-of-the-art, functional, costeffective facility. Civil engineering design calls on the talent of the engineer to balance the client's end-use requirements and financial resources, with the safety ofthe occupants. Because the process of engineering design has such a vast degree of freedom, teaching the concepts inherent in design is a very challenging, and at times frustrating, endeavor. The present paper discusses the many facets of the senior design course developed at the University of Missouri- Rolla to include a …
Methsnotrophic Biodegradation Of Trichloroethylene In A Hollow Fiber Membrane Bioreactor, Carol E. Aziz, Mark W. Fitch, Larry K. Linquist, Jonathan G. Pressman, George Georgiou, Gerald E. Speitel
Methsnotrophic Biodegradation Of Trichloroethylene In A Hollow Fiber Membrane Bioreactor, Carol E. Aziz, Mark W. Fitch, Larry K. Linquist, Jonathan G. Pressman, George Georgiou, Gerald E. Speitel
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Biodegradation of Trichloroethlyene (TCE) in a Hollow Fiber Membrane Bioreactor Was Investigated using a Mutant of the Methanotrophic Bacteria, Methylosinus Trichosporium 0B3b. Contaminated Water Flowed through the Lumen (I.e., Fiber Interior), and the Bacteria Circulated through the Shell Side of the Membrane Module and an External Growth Reactor. in Mass Transfer Studies with a Radial Cross-Flow Membrane Module, 78.3-99.9% of the TCE Was Removed from the Lumen at Hydraulic Residence Times of 3-15 Min in the Lumen and the Shell. in Biodegradation Experiments, 80-95% of the TCE Was Removed from the Lumen at Hydraulic Residence Times of 5-9 Min in …
Edge Strength Of Window Glass By Mechanical Test, Chris P. Pantelides, Gregory P. Sallee, Joseph E. Minor
Edge Strength Of Window Glass By Mechanical Test, Chris P. Pantelides, Gregory P. Sallee, Joseph E. Minor
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
A mechanical test is described that can be used to measure the edge strength of annealed and heat-strengthened glass. The mechanical test apparatus stresses only one of the two edge-lines on the edge of a glass specimen. The testing concept employs the theory of unsymmetrical bending. The test device loads glass specimens in a manner that places tensile stresses on the tested edge-line while keeping the other edge-lines at zero stress or in compression. In annealed glass tests, the scored edge-line was found to be 20% weaker than the edge-line opposite the scored edge-line. Comparisons between the edge strengths of …
Phenotypic Characterization Of Copper-Resistant Mutants Of Methylosinus Trichosporium Ob3b, M. (Mark) W. Fitch, D. W. Graham, R. G. Arnold, S. K. Agarwal, P. Phelps, G. E. Speitel, G. Georgiou
Phenotypic Characterization Of Copper-Resistant Mutants Of Methylosinus Trichosporium Ob3b, M. (Mark) W. Fitch, D. W. Graham, R. G. Arnold, S. K. Agarwal, P. Phelps, G. E. Speitel, G. Georgiou
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Cultures of Methylosinus Trichosporium OB3b Grown in the Presence of Very Low Concentrations of Copper Synthesize a Soluble Methane Monooxygenase (SMMO) that Efficiently Catalyzes the Oxidation of Trichloroethylene and Other Organic Pollutants. Recently, We Isolated Five M. Trichosporium OB3b Mutants that Express SMMO Activity When Grown in the Presence of Elevated Copper Concentrations (P. A. Phelps, S. K. Agarwal, G. E. Speitel, Jr., and G. Georgiou, Appl. Environ. Microbiol. 58:3701-3708, 1992). Here We Show that, in Contrast to the Results for the Wild-Type Cells, the Addition of Copper to Mutant Cultures Grown on Methane and Nitrate as the Nitrogen Source …
Postbuckling And Hysteresis Models Of Open-Web Girders, Jeng Fuh Ger, Franklin Y. Cheng
Postbuckling And Hysteresis Models Of Open-Web Girders, Jeng Fuh Ger, Franklin Y. Cheng
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The paper presents analytical studies of hysteretic behavior of open-web girders with angle web members. The partial inelasticity of the member cross section is traced using finite segment formulation with stress-strain control. A member is divided into a number of segments, and, for each segment, the cross section is divided into many small elements, which allows the inelastic deformation of the member to be modeled. Therefore, member stiffness is established for various inelastic deformation stages. The eccentricities and initial imperfections of web members are considered in the analysis. Good agreement between experimental and present analytical results was found for individual …
Permeation Of Several Gases Through Elastomers, With Emphasis On The Deuterium/Hydrogen Pair, M. (Mark) W. Fitch, W. J. Koros, R. L. Nolen, J. R. Carnes
Permeation Of Several Gases Through Elastomers, With Emphasis On The Deuterium/Hydrogen Pair, M. (Mark) W. Fitch, W. J. Koros, R. L. Nolen, J. R. Carnes
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The Diffusion and Permeation Coefficients for He, H2, D2, O2, and N2 in a Variety of Elastomers Were Measured by Simple Manometric Methods. the Elastomers Studied Were Butyl Rubber; Hypalon® 40 and 45; Viton® E60 and GF; Hydrin® 100 and Filled Hydrin® 100; Kraton® G, FG, and KG VTEOS; EPDM; Epoxidized Natural Rubber; and Neoprene. Consistent with Earlier Studies, Elastomers with Higher Glass Transition Temperatures Exhibited Lower Diffusion Coefficients. the Ratio of Diffusion Coefficients of the Hydrogen Isotope Pair Differed from the Purely Molecular‐weight‐based Prediction. Deuterium's Slightly Smaller Size Relative to Hydrogen is Consistent with Observed Deviations from the Molecular‐weight‐based …
Mineralization And Uptake Of Triazine Pesticide In Soil-Plant Systems, Dhileepan R. Nair, Joel G. (Gerard) Burken, Louis A. Licht, Jerald L. Schnoor
Mineralization And Uptake Of Triazine Pesticide In Soil-Plant Systems, Dhileepan R. Nair, Joel G. (Gerard) Burken, Louis A. Licht, Jerald L. Schnoor
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Deep-Rooted Trees Planted as a Buffer Zone Can Intercept Runoff and Eroded Sediments, Thus Reducing Non-Point-Source Pollution Due to Agricultural Chemicals. in This Study, Populus Sp. Were Grown in Bioreactors with an Agricultural Soil (Silt-Loam) and in a Silica-Sand Media; Both Were Spiked with 14C Uniformly Ring-Labeled Atrazine. the Plants Took Up over 11% of the 14C Labeled Atrazine Applied to the Silt-Loam Soil and over 91% of that Applied to the Silica Sand Media, with the Majority of the 14C Accumulating as Nonphytotoxic Metabolites in the Leaves. Research Suggests that, in Addition to Nutrient Uptake, Poplar …
Computed Versus Observed Inelastic Seismic Low-Rise Rc Shear Walls, Franklin Y. Cheng, G. E. Mertz, M. S. Sheu, J. F. Ger
Computed Versus Observed Inelastic Seismic Low-Rise Rc Shear Walls, Franklin Y. Cheng, G. E. Mertz, M. S. Sheu, J. F. Ger
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
A technique of calculating inelastic deformation of low-rise shear walls having height-width ratios of 0.5 and 0.75 without boundary elements is presented with consideration of the coupling effect for bending and shear deformations as well as the deformation due to base rotation. An interaction surface of moment, shear, and curvature or moment, shear, and shear strain is developed. The deflections at crack, yield, and ultimate loadings can be calculated separately from bending and shear deformations, which are compared favorably with experimental results. The shear deformation is significant for the low-rise walls studied because the deformation due to bending deformation is …
Behavior Of Arc Spot Weld Connections In Tension, Roger A. Laboube, Wei-Wen Yu
Behavior Of Arc Spot Weld Connections In Tension, Roger A. Laboube, Wei-Wen Yu
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Arc spot welds, commonly called puddle welds, are widely used for connecting cold-formed steel roof decks to their supporting members. These support members are typically hot-rolled steel beams or girders, or the top chord of open-web steel joists. A comprehensive experimental study of the tension strength of arc spot weld connections used to affix a cold-formed steel roof deck to its support member was conducted. The study investigated the key parameters that influence the connection strength: Steel thickness, tensile strength, and ductility; type of weld process, automatic or manual; cross section of the roof deck; loading condition, symmetrical or eccentric …
Simplified Strength Prediction For Cold-Formed C- And Z-Shapes, Roger A. Laboube
Simplified Strength Prediction For Cold-Formed C- And Z-Shapes, Roger A. Laboube
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Although cold-formed steel C- and Z-shaped members possess a very favorable strength-to-weight ratio, are easily fabricated and erected, and offer a cost-effective structural design solution, they can be highly susceptible to local buckling. To adequately address the impact of the local buckling limit state, a complex, time-consuming design office effort may be required. Therefore, to facilitate the design of such shapes, a study was conducted that focused on developing relatively simple, easy-to-apply design guidelines. The design guidelines address the behavior of cold-formed steel C- and Z-shaped members when used as either a flexural member or a compression member. Both edge-stiffened …
Collapse Behavior Of Pino Suarez Building During 1985 Mexico City Earthquake, Jeng Fuh Ger, Franklin Y. Cheng, Le Wu Lu
Collapse Behavior Of Pino Suarez Building During 1985 Mexico City Earthquake, Jeng Fuh Ger, Franklin Y. Cheng, Le Wu Lu
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
This paper presents the investigation of the collapse behavior of a 22-story steel building during the September 19, 1985, Mexico City earthquake by studying hysteretic behavior, ductility factors of individual structural components, and overall instability of the building. Extensive inelastic analyses have been performed for the building by using the multicomponent seismic input of actual Mexico City earthquake records. It was found that the structural response exceeds the original design ductility of this building, and most girders in the building have severe inelastic deformation. Due to the load redistribution that results from ductile girder failure, local buckling occurred in many …
Postbreakage Behavior Of Heat Strengthened Laminated Glass Under Wind Effects, Chris P. Pantelides, Amy D. Horst, Joseph E. Minor
Postbreakage Behavior Of Heat Strengthened Laminated Glass Under Wind Effects, Chris P. Pantelides, Amy D. Horst, Joseph E. Minor
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Results of a full-scale experimental investigation into the post breakage behavior of heat-strengthened laminated glass subjected to windstorm effects are presented. Two different interlayer constructions and two different glazing configurations are examined. The two interlayer constructions are a PVB polymer and a PVB/PET/PBV composite polymer. The two glazing configurations are a conventional dry glazed system and an unconventional system with a silicone anchor bead. Two test criteria are established that relate to effects of a severe windstorm. The first criterion addresses impact with windborne debris; the second defines a wind-load spectrum that represents a severe windstorm of a 4-hr duration. …
Structural Behavior Of Architectural Laminated Glass, R. A. Belir, Joseph E. Minor, H. S. Norville
Structural Behavior Of Architectural Laminated Glass, R. A. Belir, Joseph E. Minor, H. S. Norville
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Experimental and theoretical investigations conducted over a 20-year time period by several investigators provide sufficient data and information to define, for practical engineering purposes, the behavior of architectural laminated glass under lateral pressures. Investigations included definitions of material properties, theoretical stress analyses, experimental stress analyses, and destructive tests involving monolithic, laminated, and "layered" glass plates of several geometries. The preponderance of data and information indicate that: (1) Architectural laminated glass behaves in a manner similar to monolithic glass of the same nominal thickness under short-term lateral pressures (representative of wind loads) at and below room temperature; (2) the temperature at …
Assessment Of Environmental Implications Of Abandoned Oil And Gas Wells, Donald L. Warner, Cary L. Mcconnell
Assessment Of Environmental Implications Of Abandoned Oil And Gas Wells, Donald L. Warner, Cary L. Mcconnell
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
A detailed study was made of the potential for abandoned oil and gas wells in the Lower Tuscaloosa sand of Mississippi and Louisiana to act as conduits for movement of saline water from the Lower Tuscaloosa into underground sources of drinking water (USDW's). Finite-difference numerical modeling determined the extent that water might be forced from the Lower Tuscaloosa sand into a USDW as a result of injection into the Lower Tuscaloosa. Within the range of conditions modeled, water from the Lower Tuscaloosa never traveled into a USDW. On the basis of the modeling, we concluded that it is unlikely that …
Hands-On Structural Engineering Experiences With The "Anex" Mini-Laboratory, Richard A. Behr, Colin Othniel Benjamin, Azam A. Mirza
Hands-On Structural Engineering Experiences With The "Anex" Mini-Laboratory, Richard A. Behr, Colin Othniel Benjamin, Azam A. Mirza
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The ANEX facility has been developed to allow nearly real-time comparisons of analysis results with experimental data gathered on small-scale structural models. ANEX has been used successfully for in-class demonstrations, student-designed experiments, and comprehensive design/build competitions in an introductory structural analysis course at the University of Missouri-Rolla. An expert system is now being developed to guide ANEX users and to act as a trouble-shooter and advisor in the event that analytical and experimental results do not correlate acceptably well. ANEX, using only simple, small-scale model structures, is able to enrich structural engineering instruction by introducing students to the sophisticated capabilities …
The Building Of The American University In Cairo: An Example Of Mamluk Revival Style, Hend Asaad Nadim
The Building Of The American University In Cairo: An Example Of Mamluk Revival Style, Hend Asaad Nadim
Archived Theses and Dissertations
No abstract provided.
Effect Of Strain Rate On Material Properties Of Sheet Steels, M. Kassar, Wei-Wen Yu
Effect Of Strain Rate On Material Properties Of Sheet Steels, M. Kassar, Wei-Wen Yu
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The effect of strain rate on tensile and compressive mechanical properties of sheet steels is investigated experimentally and analytically. Three sheet steels are studied in both longitudinal and transverse directions under different strain rates and different amounts of prior cold stretching in order to determine the separate effects of strain rate and aging half of the cold-stretched coupons are tested in an average of two days after cold-stretching operation. The remaining half are tested to failure at least 30 days after cold-stretching operation The results show that the proportional limit yield strength and ultimate strength increase with increasing strain rate …
Estimating Uplift Capacity Of Light Steel Roof System, Roger A. Laboube
Estimating Uplift Capacity Of Light Steel Roof System, Roger A. Laboube
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
No abstract provided.
Effect Of Strain Rate On Cold-Formed Steel Stub Columns, M. Kassar, C. L. Pan, Wei-Wen Yu
Effect Of Strain Rate On Cold-Formed Steel Stub Columns, M. Kassar, C. L. Pan, Wei-Wen Yu
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The material properties of steel and the strength of steel members are affected by strain rate to investigate this characteristic for compression members 49 stub columns fabricated from 35XF sheet steel and 48 stub columns fabricated from 50XF sheet steel are studied experimentally and analytically under different strain rates The strain rate ranged from 10-5 to 0.1. in./in./sec (10-5 to 0.1 mm/mm/s). The material properties of 35XF and 50XF sheet steels developed from previous tests are used for the evaluation of the test data obtained from the member tests using specimens fabricated from the same sheet steel. The …
Asce Lrfd Method For Stainless Steel Structures, Shin Hua Lin, Wei-Wen Yu, Theodore V. Galambos
Asce Lrfd Method For Stainless Steel Structures, Shin Hua Lin, Wei-Wen Yu, Theodore V. Galambos
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
In recent years, probability-based load-and-resistance-factor-design (LRFD) method has been successfully applied to the design of hot-rolled steel sections and cold-formed steel members in the United States and foreign countries. In order to develop the LRFD criteria for the design of cold-formed stainless steel structural members and connections, a research project was conducted at the University of Missouri-Rolla since 1986 under the sponsorship of the American Society of Civil Engineers (ASCE). This newly developed LRFD Specification with Commentary has been adopted by ASCE as a new standard in 1990. It supersedes the 1974 edition of the Specification for the Design of …
Optimal Width And Depth For Maximum Breaking Load Of Wood Beams, Steven H. Bullard, Vikram Yadama
Optimal Width And Depth For Maximum Breaking Load Of Wood Beams, Steven H. Bullard, Vikram Yadama
Faculty Publications
The strength of solid wood beams is an important property to consider in construction. Such beams do not receive further primary processing after leaving the sawmill, and their quality and strength properties are therefore determined by their initial, primary breakdown at the sawmill. The most efficient means of controlling the quality of solid wood beams is thus at the sawmill level. This paper presents a method of determining the width and depth of solid beams that will maximize breaking load.
Cold-Formed Steel Z-Sections With Sloping Edge Stiffness Under Axial Load, Roger A. Laboube
Cold-Formed Steel Z-Sections With Sloping Edge Stiffness Under Axial Load, Roger A. Laboube
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
No abstract provided.
Instability And Collapse Behavior Of A Seismic Structure, Franklin Y. Cheng, Jeng Fuh Ger
Instability And Collapse Behavior Of A Seismic Structure, Franklin Y. Cheng, Jeng Fuh Ger
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The collapse behavior of a 22-story steel building during the September 19, 1985, Mexico earthquake is investigated by studying hysteretic behavior, ductility factors of individual structural components, and overall instability of the building. The hysteresis models for truss-type girders, bracing members, and box columns to be used in the inelastic analysis of this building are developed. A series of inelastic analyses have been performed for the building by using the multicomponent seismic input of actual Mexico City earthquake records. It was found that the structural response exceeds the original design ductility of this building because most girders in the building …
Uplift Capacity Of Z-Purlins, Roger A. Laboube
Uplift Capacity Of Z-Purlins, Roger A. Laboube
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Roof systems constructed using cold-formed steel components, i.e., Z-shaped purlins and interconnected roof panels, have become a very popular form of construction. This roof system is used extensively for single-story commercial and industrial buildings in the United States. The popularity of cold-formed steel members is due in part to their superior gravity load strength-to-weight ratio; however, because of their relatively light weight, a cold-formed member is very susceptible to wind uplift loading. The design specification in the United States for cold-formed steel construction does not provide a comprehensive analytical solution to the problem of wind uplift strength of a cold-formed …
Knowledge-Based Prototype For Improving Scheduling Productivity, Colin Othniel Benjamin, Daniel L. Babcock, N. B. Yunus, John B. Kincaid
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 …
Cost Comparison Of Timber, Steel, And Prestressed Concrete Bridges, Richard A. Behr, E. J. Cundy, C. H. Goodspeed
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
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 …