Browsing Civil and Environmental Engineering by Title
Now showing items 231-250 of 879
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Development of Transformations between Designed and Built Structural Systems and Pipe Assemblies
(University of Waterloo, 2015-08-13)Fabrication of steel assemblies is a challenging process using existing machines to perform the tasks involved such as cutting, drilling, and punching. Due to inaccuracies in the fabrication processes, imperfections will ... -
Development of Unit Price Indices and Estimating Inflation for Potable Water and Wastewater Pipeline Capital Works Construction
(University of Waterloo, 2017-05-17)The importance of sustainable financial management of water and wastewater pipeline infrastructure has grown in recent years due to the increasing backlog of maintenance, renewal and replacement of aging water and wastewater ... -
Development of Wastewater Collection Network Asset Database, Deterioration Models and Management Framework
(University of Waterloo, 2010-07-06)The dynamics around managing urban infrastructure are changing dramatically. Today’s infrastructure management challenges – in the wake of shrinking coffers and stricter stakeholders’ requirements – include finding better ... -
Development Practices for Municipal Pavement Management Systems Application
(University of Waterloo, 2012-08-29)Pavement Management Systems (PMS) are widely used by transportation agencies to maintain safe, durable and economic road networks. PMS prioritize the maintenance and rehabilitation of pavement sections by evaluating pavement ... -
Development, Analysis and Testing of Innovative Mechanical Prestressing Anchors for CFRP Plates for Structural Rehabilitation and Retrofitting
(University of Waterloo, 2017-01-18)This thesis presents the development, analysis and experimental investigation of three innovative, easy-to-install, low cost, epoxy-free, mechanical, friction-based, compact, high-strength, prestressing anchors for carbon ... -
Developments in Informal Multi-Criteria Calibration and Uncertainty Estimation in Hydrological Modelling
(University of Waterloo, 2014-08-22)Hydrologic modelling has benefited from significant developments over the past two decades, which has led to the development of distributed hydrologic models. Parameter adjustment, or model calibration, is extremely important ... -
Digital Twin Framework and Auto-Linking for Management of Legacy Assets
(University of Waterloo, 2021-04-30)The integration of Digital Twins (DTs) for facility and asset management is becoming increasingly common with the advancement of sensor and modelling technology. A digital twin is defined as a responsive and virtual ... -
Direct Biofiltration and Nutrient (Phosphorus) Enhancement for Polymeric Ultrafiltration Membrane Fouling Control
(University of Waterloo, 2013-12-10)Membrane filtration is growing in popularity as a viable technology for drinking water treatment to meet high demand and regulatory requirements. While many improvements have been made to the technology in the past decade, ... -
Direct Biofiltration as a Pretreatment to Control Fouling in Ceramic Membranes in Drinking Water Treatment
(University of Waterloo, 2016-09-27)Ceramic membranes have been widely and successfully used in the food and beverage processing industry. Despite their success, ceramic membranes are not commonly employed in drinking water treatment due to their high initial ... -
Direct Method for Floor Response Spectra Considering Soil-Structure Interaction
(University of Waterloo, 2020-02-19)Soil-Structure Interaction (SSI) analysis is required in structural dynamic analysis under seismic excitations in the current standards, and it significantly influences the Floor Response Spectra (FRS),which are used in ... -
Direct Method of Generating Floor Response Spectra
(University of Waterloo, 2016-05-12)Floor Response Spectra (FRS), also called In-structure Response Spectra (IRS) in some standards and literature, are extensively used as seismic input in safety assessment for Systems, Structures, and Components (SSCs) in ... -
Direct Method of Generating Floor Response Spectra for Structures under Earthquake Excitations at Multiple Supports
(University of Waterloo, 2023-05-15)Floor Response Spectra (FRS) are commonly used as seismic input in the safety assessment for secondary systems in the nuclear power industry. Efficient and accurate determination of FRS is crucial in the design of nuclear ... -
Disinfection By-Product Formation in Drinking Water Treated with Chlorine Following UV Photolysis & UV/H<sub>2</sub>O<sub>2</sub>
(University of Waterloo, 2005)ABSTRACT As far back as the early 1900?s when it was discovered that water could be a mode of transmitting diseases, chlorine was used to disinfect water. In the 1970?s, the formation of disinfection by-products ... -
Dislocation Dynamics for High Strain-Rate Plasticity: Inertial and Thermal Effects
(University of Waterloo, 2017-07-26)There has been a trend of miniaturization in recent technological advances, particularly through the development of microelectromechanical systems (MEMS). To cope with the demand for increasing performance from ever smaller ... -
The Disposal of Mine Tailings Material
(University of Waterloo, 2014-04-29)The mining industry is an important component of the Canadian economy. The principal waste material from this industry is tailings. Numerous failures of tailings dams have caused loss of life and serious pollution ... -
Drinking Water Softening/Scale Prevention Technology Assessment and Performance of Template Assisted Crystallization
(University of Waterloo, 2019-06-18)Hard water typically has a hardness concentration over 120 mg/L CaCO3. Hardness is not a regulated drinking water parameter and does not have severe health effects. However, hard water causes more soap and detergent ... -
Drinking Water Treatment Technology Resilience for Management of Severely Deteriorated Water after Wildfire
(University of Waterloo, 2021-09-29)Severe wildland fire is occurring with increased frequency in many regions and can be potentially catastrophic for the provision of safe drinking water due to increasingly variable or deteriorated source quality. Deteriorated ... -
Dual Oxidant System for In Situ Treatment of Organic Contaminants
(University of Waterloo, 2017-05-01)Recently, the potential catalytic properties of manganese dioxide have attracted attention as a means to activate persulfate. This focus of this research was on the potential ability of MnO2(s) solids synthesized through ... -
The durability of concrete using concrete plant wash water
(University of Waterloo, 2007-06-18)Hundreds of ready-mix concrete trucks are dispatched daily from ready-mix concrete plants. On average, a concrete truck has a carrying capacity ranging from 7 to 9 cubic metres of concrete, requiring about 1500 litres of ... -
Early Flame Detection System Using Real-Time Machine-Vision and Image Analysis
(University of Waterloo, 2022-02-04)From 2010 to 2019, 110,811 fires with losses have been reported to the Office of Fire Marshall and Emergency Management in Ontario. In The USA, the local fire departments responded to 1,338,500 fires in 2020. These fires ...