Browsing Civil and Environmental Engineering by Title
Now showing items 712-731 of 883
-
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 ... -
Rigorous Validation of Hydrologic Models in Support of Decision-Making
(University of Waterloo, 2017-09-27)Hydrologic models are often relied upon to inform decisions in hydrology and water resources applications. Typically, hydrologic models are validated (i.e., deemed fit-for-purpose) using the split-sample test introduced ... -
Risk Assessment of a Water Supply System under Climate Variability: A Stochastic Approach
(University of Waterloo, 2008-01-28)In this study, a model is developed to assess risk to a municipal water supply system under the influence of population growth and climate change. To incorporate the uncertainly in water use, a model which combines time ... -
A Risk Based Approach to Module Tolerance Specification
(University of Waterloo, 2014-04-24)This research investigates tolerance strategies for modular systems on a project specific basis. The objective of the proposed research is to form a guideline for optimizing the construction costs/risks with the aim of ... -
Risk-Based Decision Support Framework for Managing Excessive Geometric Variability Issues in Modular Construction
(University of Waterloo, 2019-03-15)Managing and controlling excessive dimensional and geometrical variability (i.e., tolerances) of modular components and assemblies during the fabrication, transportation, and erection phases, represents a major issue in ... -
A Risk-Based Decision Support Framework for Railway-Highway Grade Crossing Closures
(University of Waterloo, 2022-05-03)Reducing the risk of collisions between trains and vehicles at railway-highway grade crossings is a high priority safety strategy set by many governments and railway authorities. To achieve this goal, one of the main ...