Parameters Influencing Pressure During Pumping Of Self-Compacting Concrete,
2013
Missouri University of Science and Technology
Parameters Influencing Pressure During Pumping Of Self-Compacting Concrete, Dimitri Feys, Geert De Schutter, Ronny Verhoeven
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The Main Difference between Conventional Vibrated Concrete (CVC) and Self-Compacting Concrete (SCC) is Observed in the Fresh State, as SCC Has a Significantly Lower Yield Stress. on the Other Hand, the Placement of SCC by Means of Pumping is Done with the Same Equipment and Following the Same Practical Guidelines Developed for CVC. It Can Be Questioned Whether the Flow Behavior in Pipes of SCC is Different and Whether the Developed Practical Guidelines Can Still Be Applied. This Paper Describes the Results of Full-Scale Pumping Tests Carried Out on Several SCC Mixtures. It Shows Primarily that the Slump or Yield …
Bowling Green, Kentucky - Civil War, 1861-1865 - Fortifications (Sc 899),
2013
Western Kentucky University
Bowling Green, Kentucky - Civil War, 1861-1865 - Fortifications (Sc 899), Manuscripts & Folklife Archives
Manuscript Collection Finding Aids
Finding aid and scans (Click on "Additional Files" below) for Manuscripts Small Collection 899. Photocopies and documentation of plans of Civil War forts in Bowling Green, Kentucky. While these may have all been drawn in 1865, the plans have earlier dates on them.
Offshore Anchor Piles Under Mooring Forces: Centrifuge Modeling,
2013
Assiut University
Offshore Anchor Piles Under Mooring Forces: Centrifuge Modeling, Mohamed I. Ramadan, Stephen D. Butt, Radu Popescu
Architectural Engineering
Offshore anchor piles are seafloor moorings that keep the position of floating structures during a harsh environment. These piles are usually subjected to a wide range of monotonic and cyclic lateral-to-oblique pullout forces. Centrifuge tests were carried out to study the behavior of offshore anchor piles under mooring forces in saturated dense sand. The tests were carried out at different loading angles. All piles were jacked into the sand bed in-flight. The pile models were instrumented with strain gauges. Bending moment, soil pressure, and pile lateral deflection profiles are presented and discussed. It was found that there is a significant …
Survey Of Suitable Plants For Cal Poly's Green Wall,
2013
California Polytechnic State University, San Luis Obispo
Survey Of Suitable Plants For Cal Poly's Green Wall, Katrina Burritt
Horticulture and Crop Science
Green wall technology is a growing industry in the United States and has been very successful for a several years throughout Europe. The objective of this survey was to study the success of several different species of plants on a vertical wall facing south at Cal Poly’s Horticultural Department Unit. At first the focus was aimed at using California native species, because it was thought that natives would be better acclimated to the exposure in this specific location. It became apparent that plants should not be selected for the wall based just on the fact that they are California natives. …
Relationships Between Unoccupied Classroom Acoustical Conditions And Elementary Student Achievement Measured In Eastern Nebraska,
2013
University of Nebraska - Lincoln
Relationships Between Unoccupied Classroom Acoustical Conditions And Elementary Student Achievement Measured In Eastern Nebraska, Lauren M. Ronsse, Lily M. Wang
Durham School of Architectural Engineering and Construction: Faculty Publications
Building standards recommend maximum background noise levels (BNL) and reverberation times (RT) for unoccupied classrooms. However, existing research does not show a consistent correlation between these parameters and student achievement. Through in situ testing, this research seeks to determine what acoustical conditions should be attained in elementary schools for students to meet educational goals. Acoustical measurements were conducted in a Nebraska public school system and correlated to achievement scores from students in the surveyed classrooms. Unoccupied BNLs and RTs were gathered in 34 third and 33 fifth-grade classrooms. Additionally, binaural room impulse response measurements were gathered in a subset of …
Structural Engineering Students For Haiti: A Student-Run, Student-Initiated Organization For The Benefit Of The Haitian People,
2013
California Polytechnic State University - San Luis Obispo
Structural Engineering Students For Haiti: A Student-Run, Student-Initiated Organization For The Benefit Of The Haitian People, Andrew Jimenez, Alex Daddow
Architectural Engineering
On August 2nd 2012, a group of 10 students from Cal Poly, San Luis Obispo traveled to Léogâne, Haiti to construct a bell tower for the Saint Rose de Lima Parish. The trip consisted of four days of construction, and three days of touring. The seven days in Haiti were a result of three months of planning by a student-run, student-initiated group called Structural Engineering Students for Haiti, or SESH. The following report documents the planning, execution and lessons learned from this trip. The planning included everything from fund raising to disease prevention. The trip was successful because the bell …
Cal Poly 2013 Brocade Challenge Project Report: Efficient Data Center Design,
2013
California Polytechnic State University, San Luis Obispo
Cal Poly 2013 Brocade Challenge Project Report: Efficient Data Center Design, Kevin Miller
Architectural Engineering
No abstract provided.
Response Surface Method Based On Radial Basis Functions For Modeling Large-Scale Structures In Model Updating,
2013
Missouri University of Science and Technology
Response Surface Method Based On Radial Basis Functions For Modeling Large-Scale Structures In Model Updating, Linren Zhou, Guirong Yan, Jinping Ou
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The Response Surface (RS) Method based on Radial Basis Functions (RBFs) is Proposed to Model the Input-Output System of Large-Scale Structures for Model Updating in This Article. as a Methodology Study, the Complicated Implicit Relationships between the Design Parameters and Response Characteristics of Cable-Stayed Bridges Are Employed in the Construction of an RS. the Key Issues for Application of the Proposed Method Are Discussed, Such as Selecting the Optimal Shape Parameters of RBFs, Generating Samples by using Design of Experiments, and Evaluating the RS Model. the RS Methods based on RBFs of Gaussian, Inverse Quadratic, Multiquadric, and Inverse Multiquadric Are …
Offshore Anchor Piles Under Mooring Forces: Numerical Modeling,
2013
Assiut University
Offshore Anchor Piles Under Mooring Forces: Numerical Modeling, Mohamed I. Ramadan, Stephen D. Butt, Radu Popescu
Architectural Engineering
A parametric study was carried out to study the behavior of offshore anchor piles under mooring forces in dense sand using a three dimensional (3-D) finite element model (FEM). The Mohr–Coulomb plastic model has been used to model the soil, and has been calibrated based on the centrifuge tests discussed in a Ph.D. thesis (published by Ramadan in 2011). The selection of model parameters and comparison of calibrated results with the centrifuge test results are discussed. In the parametric study, different pile lengths and diameters were considered to have different pile–soil rigidities. The pile was loaded at different load inclination …
Flexural And Shear Behavior Of Reinforced Concrete Members Strengthened With A Discrete Fiber-Reinforced Polyurea System,
2013
Missouri University of Science and Technology
Flexural And Shear Behavior Of Reinforced Concrete Members Strengthened With A Discrete Fiber-Reinforced Polyurea System, Courtney E. Greene, John J. Myers
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Recent research has been conducted to evaluate the benefits provided by externally applied discrete fiber-reinforced polyurea (DFRP) coating systems. This coating was proposed to allow for ease of construction in repair-retrofit situations and to provide multihazard benefits, ranging from blast or impact fragmentation mitigation to seismic reinforcement and general strengthening. This phase of research investigated the flexural and shear reinforcement capabilities of the systems. Testing parameters included type of structural failure, polyurea, and fiber volume fraction. Additionally, the effects of the thickness of the composite system were considered. Concrete beam specimens were fabricated and coated per the designed test matrix …
The Bridge Newsletter Spring 2013,
2013
Missouri University of Science and Technology
The Bridge Newsletter Spring 2013, Missouri University Of Science And Technology
The Bridge Newsletter
-Bringing unique research capabilities to campus
-From trash into treasure
-Improving wellness
-Raising the roof
Significance Of Geotechnical Loads On Local Buckling Response Of Buried Pipelines With Respect To Conventional Practice,
2013
Memorial University of Newfoundland
Significance Of Geotechnical Loads On Local Buckling Response Of Buried Pipelines With Respect To Conventional Practice, Hiva Mahdavi, Shawn Kenny, Ryan Phillips, Radu Popescu
Architectural Engineering
Long-term large deformation geohazards can impose excessive deformation on a buried pipeline. The ground displacement field may initiate pipeline deformation mechanisms that exceed design acceptance criteria with respect to serviceability requirements or ultimate limit states. The conventional engineering approach to define the mechanical performance of pipelines has been based on combined loading events for in-air conditions. This methodology may be conservative, as it ignores the soil effect that imposes geotechnical loads, and also provides restraint, on buried pipelines. The importance of pipeline–soil interaction and load-transfer mechanisms that may affect local buckling of buried pipelines is not well understood. A three-dimensional …
A Novel Approach To Detecting Breathing-Fatigue Cracks Based On Dynamic Characteristics,
2013
Missouri University of Science and Technology
A Novel Approach To Detecting Breathing-Fatigue Cracks Based On Dynamic Characteristics, Guirong Yan, Alessandro De Stefano, Emiliano Matta, Ruoqiang Feng
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
During the Service Life of Structures, Breathing-Fatigue Cracks May Occur in Structural Members Due to Dynamic Loadings Acting on Them. These Fatigue Cracks, If Undetected, Might Lead to a Catastrophic Failure of the Whole Structural System. Although a Number of Approaches Have Been Proposed to Detect Breathing-Fatigue Cracks, Some of Them Appear Rather Sophisticated or Expensive (Requiring Complicated Equipment), and Others Suffer from a Lack of Sensitivity. in This Study, a Simple and Efficient Approach to Detecting Breathing-Fatigue Cracks is Developed based on Dynamic Characteristics of Breathing Cracks. First, Considering that Breathing Cracks Introduce Bilinearity into Structures, a Simple System …
A Comparative Study Of The Bond Strength Of Reinforcing Steel In High-Volume Fly Ash Concrete And Conventional Concrete,
2013
Missouri University of Science and Technology
A Comparative Study Of The Bond Strength Of Reinforcing Steel In High-Volume Fly Ash Concrete And Conventional Concrete, Mahdi Arezoumandi, Michael H. Wolfe, Jeffery S. Volz
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The production of Portland cement-the key ingredient in concrete-generates a significant amount of carbon dioxide. However, due to its incredible versatility, availability, and relatively low cost, concrete is the most consumed manmade material on the planet. One method of reducing concrete's contribution to greenhouse gas emissions is the use of fly ash to replace a significant amount of the cement. An experimental investigation was conducted to compare the bond strength of reinforcing steel in high-volume fly ash concrete (HVFAC)-concrete with at least 50% of the cement replaced with fly ash-with conventional concrete (CC). This experimental program consisted of 12 pull-out …
Intermittency And Local Dissipation Scales Under Strong Mean Shear,
2013
Missouri University of Science and Technology
Intermittency And Local Dissipation Scales Under Strong Mean Shear, Khandakar Niaz Morshed, Subhas Karan Venayagamoorthy, Lakshmi Prasad Dasi
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
We experimentally probe the local dissipation scale distribution Q(η) and temporal fluctuations of the turbulent kinetic energy dissipation rate ε in the strongly anisotropic flow past a backward facing step. A shift in Q(η) and corresponding reduction in the relative intermittency of ε is observed with increasing mean shear S. We offer physical arguments to elucidate the role of strong shear on the small-scale structure. A local mean-shear dissipation Reynolds number, ReS ≡ {ε}/(S2ν), is proposed that may define a family of universal small-scale structures of turbulence. © 2013 American Institute of Physics.
Performance-Based Engineering Framework For Earthquake And Fire Following Earthquake,
2013
Michigan Technological University
Performance-Based Engineering Framework For Earthquake And Fire Following Earthquake, Aerik Carlton
Dissertations, Master's Theses and Master's Reports - Open
The objective for this thesis is to outline a Performance-Based Engineering (PBE) framework to address the multiple hazards of Earthquake (EQ) and subsequent Fire Following Earthquake (FFE). Currently, fire codes for the United States are largely empirical and prescriptive in nature. The reliance on prescriptive requirements makes quantifying sustained damage due to fire difficult. Additionally, the empirical standards have resulted from individual member or individual assembly furnace testing, which have been shown to differ greatly from full structural system behavior. The very nature of fire behavior (ignition, growth, suppression, and spread) is fundamentally difficult to quantify due to the inherent …
Ain Al-Sira Site Analysis,
2013
American University in Cairo
Ain Al-Sira Site Analysis, Ehsan Abushadi
Papers, Posters, and Presentations
Site Analysis of Ain al-Sira, for the design of a sustainable school for AENG 453. The site analysis looks at the history of the area, the topography, the water bodies and the situation today. Site analysis of six plots in the area of al-Fustat and Ain al-Sira. Contains brief history of the area, changes in landscape and topography, selection of previous development projects for the area, analysis of growth of landfill, and analysis of water bodies in the area.
Ua61/3 Health Sciences Complex: Nursing & Physical Therapy,
2013
Western Kentucky University
Ua61/3 Health Sciences Complex: Nursing & Physical Therapy, Wku Health & Human Services
WKU Administration Documents
Booklet describing the Medical Center / WKU Health Sciences Complex facility. Floorplans are included.
Binaural Room Impulse Response Database Acquired From A Variable Acoustics Classroom,
2013
University of Nebraska - Lincoln
Binaural Room Impulse Response Database Acquired From A Variable Acoustics Classroom, Zhao Peng, Siu Kit Lau, Lily M. Wang, Sean Browne, Kenneth P. Roy
Durham School of Architectural Engineering and Construction: Faculty Publications
Room measurements were conducted in a variable acoustics classroom mockup space (epod) at Armstrong World Industries in Lancaster, Pennsylvania, USA. Binaural room impulse responses were measured in the epod using a head and torso simulator. Five reverberation time (RT) scenarios were achieved with various combinations of absorptive wall panels and acoustical ceiling tile. These provided a range of mid-frequency RTs from 0.4 to 1.1 seconds. Three of the five RT scenarios were achieved using two different material configurations to also consider material location effects. For each of the eight material configurations, two student-teacher orientations were tested. One orientation had all …
Effects Of Reverberation And Noise On Speech Comprehension By Native And
Non-Native English-Speaking Listeners,
2013
University of Nebraska-Lincoln
Effects Of Reverberation And Noise On Speech Comprehension By Native And Non-Native English-Speaking Listeners, Z. Ellen Peng, Lily M. Wang, Siu-Kit Lau, Adam M. Steinbach
Durham School of Architectural Engineering and Construction: Faculty Publications
Previous studies have demonstrated the negative impact of adverse signal-to-noise-ratios on non-native English-speaking listeners' performance on speech recognition using recall tasks, as well as implied that comprehension skills were more impaired than recognition skills under reverberation and noise. The authors have themselves previously conducted a pilot study on three native and three non-native Englishspeaking listeners to examine the effects of reverberation and noise using speech comprehension tasks. Those results suggested that speech comprehension performance is worse under longer reverberation times (RT), and that a longer RT is more detrimental to speech comprehension by non-native listeners than native listeners. This paper …
