Browsing Civil and Environmental Engineering by Title
Now showing items 718-737 of 880
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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 ... -
Risk-Based Decision Support Model for Planning Emergency Response for Hazardous Materials Road Accidents
(University of Waterloo, 2004)Hazardous Materials (HazMat) are transported throughout Canada in a great number of road shipments. The transportation of HazMat poses special risks for neighboring population and environment. While HazMat accidents ... -
Risk-Based Model for Effective Marshalling of Dangerous Goods Railway Cars
(University of Waterloo, 2010-01-25)Today, railroad companies transport many varieties of dangerous goods (DG). Train derailments, especially those involving DG, can be catastrophic in terms of loss of life and environmental damage. In North America, the ... -
A Risk-Based Optimization Framework for Security Systems Upgrades at Airports
(University of Waterloo, 2010-04-28)Airports are fast-growing dynamic infrastructure assets. For example, the Canadian airport industry is growing by 5% annually and generates about $8 billion yearly. Since the 9/11 tragedy, airport security has been of ... -
A river's connective tissue: Lab observations of particle pathways and riffle formation during floods
(University of Waterloo, 2024-01-05)In rivers it is difficult to quantify bedform dynamics during storm events. Direct observation of sediment pathways would provide insight into the mechanisms that underly bedform formation and destruction. In the current ... -
A Rules-based Mode Choice Model using CHAID Decision Trees and Dynamic Transit Accessibility
(University of Waterloo, 2021-05-31)Transportation mode choice models typically represent user decision making using utility-based mode choice models. However, utility models assume that users make compensatory trade-offs between decision variables to ... -
Safe, Quiet and Durable Pavement Surfaces
(University of Waterloo, 2009-03-06)Skidding contributes to up to 35% of wet pavement accidents. Pavement surface friction therefore is an important component of highway safety. The skid resistance also varies seasonally and reduces over time due to surface ... -
Safety Effects of Preventative Maintenace: Microsurfacing : A Case Study
(University of Waterloo, 2007-09-19)Various North American transportation agencies have implemented several preventative maintenance techniques to improve pavement performance and safety. The Region of York, located north east of Toronto, Ontario, has been ... -
Sample size effect in ultrasonic testing of geomaterials - numerical and experimental study
(University of Waterloo, 2008-05-21)Nondestructive evaluation of civil structures is of increasing interest to utility owners. Several methods exist to evaluate different properties of concrete, pavement, cemented sands and others. UPVM is the most commonly ... -
A Sediment Budget of an Urban Creek in Toronto
(University of Waterloo, 2014-09-02)Wilket Creek is a second order stream located in Toronto, Ontario. Over the past decade, management efforts have intensified to protect infrastructure including walking paths, bridges, sanitary sewers and private property. ...