Browsing Civil and Environmental Engineering by Title
Now showing items 705-724 of 881
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Regime Shift Detection Techniques for Determining the Year of Positive 0°C Crossing in the Northern Hemisphere for Late-Winter and Spring
(University of Waterloo, 2011-12-21)The temperature of 0°C, the phase change point of water-ice, is among the most influential factors on the hydrology of the temperate regions that experience winter. Many cryospheric processes, such as snow and ice melt, ... -
Regional Frequency Analysis Estimates of Extreme Rainfall Events under Climate Change
(University of Waterloo, 2020-01-09)Extreme rainfall events have a long history of causing large economic damages in urban areas and even loss of human life. Reliable estimates of extreme rainfall intensities for different rainfall durations are essential ... -
Relating Changes in Extreme Streamflow Events to Changes in Extreme Rainfall Events in Canada
(University of Waterloo, 2016-09-28)The changes in extreme events caused by climate change are likely to have significant impacts in the future. It is expected that climate change will cause changes in rainfall intensities and magnitudes and consequently ... -
Relating Extreme Temperature and Precipitation to Improve IDF Curve Estimates for Ontario in Response to Climate Change
(University of Waterloo, 2017-09-27)Events of extreme precipitation have a huge influence on society. They cause flooding, erosion, and threaten infrastructure, transportation, and safety. Precipitation extremes have increased over the last century (Alexander ... -
Relationship between Short-Term and Long-Term Creep, and the Molecular Structure of Polyethylene
(University of Waterloo, 2009-09-02)Polyethylene has been studied from many different perspectives; a final application property perspective, in which the response of the material to loads is the topic; a micromechanical point of view, in which the macroscopic ... -
Reliability Analysis Using the Method of Multiplicative Dimensional Reduction
(University of Waterloo, 2017-04-25)Traditional engineering analyses and designs are based on deterministic input variables, and variability seen in the real world are often ignored to simplify the work. Formal reliability analyses are generally avoided by ... -
Reliability Assessment of Load Testing for Concrete Buildings
(University of Waterloo, 2015-04-24)Structural rehabilitation is regularly undertaken to diagnose and repair a building during its service life; this practice ensures that buildings operate under safe and reliable conditions. Engineers generally rely on ... -
Reliability-based Environmental Impact Assessment in Geotechnical Engineering
(University of Waterloo, 2023-11-30)A sustainable design is achieved by balancing the four aspects, so called the four Es, of sustainability – environment, economy, equity, and engineering. Given that geotechnical constructions involve land transformations ... -
Remediation of Weathered Light Nonaqueous Phase Liquids by Persulfate: In-Situ Performance Assessment and Numerical Modeling
(University of Waterloo, 2021-08-25)Light nonaqueous phase liquids (LNAPLs) petroleum hydrocarbons (PHCs) subsurface contamination is complex and poses considerable risks to human health and the environment. The PHC contaminated sites are often difficult to ... -
Removal of Enteric Viruses By Ultrafiltration Membranes
(University of Waterloo, 2011-08-29)Application of low pressure membranes in drinking water treatment, including both microfiltration (MF) and ultrafiltration (UF), have witnessed a rapid increase in the past decades. Low pressure membranes are considered a ... -
Removal of MS2 Bacteriophage, Cryptosporidium, Giardia and Turbidity by Pilot-Scale Multistage Slow Sand Filtration
(University of Waterloo, 2007-05-16)This research aimed to address the knowledge gaps in the literature regarding the removal of waterborne pathogens (viruses and protozoa) by modified multistage slow sand filtration. In the current study, two pilot-scale ... -
Removal of Organic Matter by Classical Biofiltration: Mechanistic Insights Regarding "Biodegradation"
(University of Waterloo, 2019-10-03)Pilot-scale biofiltration experiments were conducted at the Region of Waterloo’s Mannheim Drinking Water Treatment Plant to inform the scientific and operational understanding of drinking water treatment by biologically-active ... -
Removal of Perfluorinated Compounds from Ultrapure and Surface Waters by Adsorption and Ion Exchange
(University of Waterloo, 2015-02-02)Perfluorinated compounds (PFCs) have been detected globally in drinking water at trace concentrations. This is attributable to the chemical properties that characterize these compounds: strong saturated carbon-fluorine ... -
Removal of Perfluorinated Compounds in Drinking Water Treatment: A Study of Ion Exchange Resins and Magnetic Nanoparticles
(University of Waterloo, 2017-11-21)Perfluorinated compounds (PFCs) are emerging contaminants which have been detected in various environmental compartments, including drinking water sources. Because of their potential risks to human health, PFCs in drinking ... -
Renewal of Potable Water Systems Using Cement Mortar Lining; an Investigation into Corrosion Reduction and Water-loss Prevention
(University of Waterloo, 2007-01-23)Many Canadian cities are faced with the problem of an aging and deteriorating iron water distribution network - pipe breaks, leakage, and/or aesthetic water quality problems. Public confidence in municipalities’ ability ... -
Resilience assessment in geotechnical engineering
(University of Waterloo, 2016-09-15)Impacts of inevitable disasters and climate change have been major concerns for the safety and sustainability of communities in the recent past. In an effort to reduce these impacts, development of resilience in civil ... -
Response Spectra for Seismic Analysis and Design
(University of Waterloo, 2015-04-20)Earthquakes are one of the greatest natural disasters to human life and properties. Following lessons from previous earthquake disasters, the performance-based seismic design is increasingly accepted by engineers to prevent ... -
Rethinking the Split-Sample Approach in Hydrological Model Calibration
(University of Waterloo, 2023-10-16)Hydrological models, which have become increasingly complex in the last half century due to the advances in computing capabilities and data collection, have been extensively utilized to facilitate decision-making in water ... -
Ridership Modeling at Stop Level
(University of Waterloo, 2015-08-27)This thesis presents a ridership modeling method at stop level for public transit using multiple linear regression and Geographic Information System (GIS) analysis tools. This modeling method is applied to one express and ... -
Rigid Pavement: Ontario Calibration of the Mechanistic-Empirical Pavement Design Guide Prediction models
(University of Waterloo, 2017-09-27)The Mechanistic-Empirical Pavement Design Guide (MEPDG) has been introduced to transportation agencies as an innovative method for analysis and design of pavements. However, the MEPDG cannot be used by highway agencies ...