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Full-Text Articles in Architecture
Residence Halls 1506 And 1507, Illinois Mathematics And Science Academy
Residence Halls 1506 And 1507, Illinois Mathematics And Science Academy
Residence Halls
No abstract provided.
Cyclic Lateral Loading Of A Large-Scale Pile Group, Shamsher Prakash, K. Sreerama, Sally Prakash
Cyclic Lateral Loading Of A Large-Scale Pile Group, Shamsher Prakash, K. Sreerama, Sally Prakash
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
No abstract provided.
Web-Crippling Strength Of Cold-Formed Steel Beams, C. Santaputra, M. B. Parks, Wei-Wen Yu
Web-Crippling Strength Of Cold-Formed Steel Beams, C. Santaputra, M. B. Parks, Wei-Wen Yu
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The structural behavior of high-strength cold-formed steel beams subjected primarily to web crippling is investigated analytically and experimentally. Hat sections and I-beams, formed from five different types of high-strength sheet steels, are investigated under various loading conditions. In addition to the test data gathered in this phase of study, the experimental results obtained from the beam tests conducted at various companies are carefully evaluated. The evaluation indicates that the present available design criteria are not suitable for high-strength materials with yield strengths exceeding 80 ksi (552 MPa). New design formulas are derived for different types of loading conditions on the …
Permeability Of Clays Under Organic Permeants, Janardanan O. Uppot, Richard Wesley Stephenson
Permeability Of Clays Under Organic Permeants, Janardanan O. Uppot, Richard Wesley Stephenson
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
A Magnesium Montmorillonite and a Kaolinite Clay Are Subjected to Organic and Inorganic Permeants to Study the Changes in Permeability Caused by the Reaction between Clays and Permeants. the Permeants Are Acetic Acid, Aniline, Methanol, and Xylene. Tests Are Conducted in Specially Designed and Constructed Flexible Wall Permeameters that Provide Precise Measurements of Pressures and Flows. Increases in Clay Permeability Due to Clay-Permeant Chemical Reactions Are Measured to Be on the Order of Two to Three Times the Original Permeability. This is in Contrast to the 100 to 1,000 Times Increases Reported by Others. the Writers Believe that the Large …
Sludge Digestion By Anaerobic Fluidized Beds. I: Lab Performance Data, Ju-Chang Huang, Bill T. Ray, Yao Jiang Huang
Sludge Digestion By Anaerobic Fluidized Beds. I: Lab Performance Data, Ju-Chang Huang, Bill T. Ray, Yao Jiang Huang
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
This study was undertaken to evaluate the laboratory performance of the anaerobic fluidized bed digesting secondary biological sludge at 35° C with four hydraulic-retention times (HRTs): 1, 2.5, 5, and 10 days. In addition, the effects of both operating temperature (15° C, 25° C and 35° C) and the initial sludge solubilization on the digester performance were also examined. It was found that at 35° C, an adequate degree of sludge digestion was obtainable with an HRT of only 1-2 days if the influent biological sludge was presolubilized by treatment with 17.5 meq/L of sodium hydroxide. If no presolubilization was …
Recursive Optimization For Seismic Steel Frames, Franklin Y. Cheng, D. S. Juang
Recursive Optimization For Seismic Steel Frames, Franklin Y. Cheng, D. S. Juang
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The theoretical derivations and numerical procedures used in the computer program ODSEWS-2D-II for the analysis and optimum design of two-dimensional regular and irregular steel frames subjected to static, earthquake, and wind forces are presented. The seismic input can be interacting ground motions of actual earthquake records, various response spectra, and different building provisions of the Uniform Building Code (UBC), ATC-03 in the United States, and TJ-11 in China. Included are the mathematical formulation based on the consistent mass and the displacement method with consideration of geometric nonlinearity, three levels of recursive optimization procedures, the objective function of minimum construction and …
Optimal Design Rules Applied To The Design Of High-Speed Mechanisms Under Deflection And Stress Constraints, Frank W. Liou, Jenny Liu
Optimal Design Rules Applied To The Design Of High-Speed Mechanisms Under Deflection And Stress Constraints, Frank W. Liou, Jenny Liu
Mechanical and Aerospace Engineering Faculty Research & Creative Works
Presented in this paper are two approaches for the design of flexible mechanisms under stress and deflection constraints. Based on the optimality conditions derived in this paper, two procedures are developed to design the minimum weight of mechanisms subject to stress and deflection limitations. The first procedure is the improvement of Thornton's design process r 17), and the second procedure is based on the interpolation technique. Several design examples are also presented to demonstrate these methods.
Sludge Digestion By Anaerobic Fluidized Beds. Ii: Kinetic Model, Bill T. Ray, Ju-Chang Huang, Brian A. Dempsey
Sludge Digestion By Anaerobic Fluidized Beds. Ii: Kinetic Model, Bill T. Ray, Ju-Chang Huang, Brian A. Dempsey
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
A model has been developed to describe the gas production and soluble-COD variations from the digestion of waste-activated sludge in the anaerobic fluidized-bed reactor. It indicates that a substantial rate increase can be attained by prehydrolysis of the biological sludge, external to the reactor. The model indicates that the rate-limiting step is in the sludge hydrolysis. The model is developed from an assumption of first-order kinetics in a set of series and parallel, irreversible reactions. That is, the formation of soluble substrate is first order with respect to the particulate biomass present, and that the production of methane is first …