Browsing Civil and Environmental Engineering by Title
Now showing items 264-283 of 884
-
Effect of Thermal Pretreatment on Digestibility of Thickened Waste Activated Sludge and Primary Sludge in Two-stage Anaerobic Digestion
(University of Waterloo, 2015-12-15)This study investigated the effect of high pressure thermal (HPTH) pretreatment on the biodegradability of a mixture of primary sludge (PS) and thickened waste activated sludge (TWAS) in single-and two-stage continues ... -
Effect of Unbalanced Moment on Punching Shear Strength of Slab-Column Joints
(University of Waterloo, 2020-05-27)The design of reinforced concrete flat plate slab-column connections subjected to unbalanced moments varies greatly between national design codes. Specific to Canada and the United States (U.S.), assumptions relating to ... -
Effect of Woodpecker Damage and Wood Decay on Wood Utility Pole Strength
(University of Waterloo, 2011-04-28)In many regions of North America, Europe, and Australia, wood utility poles are used as main and secondary structural members for the support of electrical distribution and transmission lines. In the province of Ontario ... -
The Effect of Woodpecker Damage on the Reliability of Wood Utility Poles
(University of Waterloo, 2013-08-30)Hydro One, a major distribution of electricity in Ontario, has reported that approximately 16,000 of the wood utility poles in its network of two million poles have been damaged by woodpeckers. With a cost of replacement ... -
Effectiveness of Transit Signal Priority Strategies at Intersections with High Truck Volumes
(University of Waterloo, 2019-09-27)This thesis discusses the effectiveness of two Transit Signal Priority (TSP) strategies, Queue Jump Lane combined with Advanced Transit Signal (QJL-TS) and Green Extension (GE), at an isolated intersection during ... -
Effects of beam axial deformations on storey-based critical gravity loads in tension-only semi-braced steel frames
(Elsevier, 2021-04-01)If the beams in a structural frame are not connected to slabs or other rigid diaphragms, the beams will axially deform when the frame is subjected to lateral loads, reducing the critical loads and increasing local deflections ... -
Effects of column imperfections on capacity of steel frames in variable loading
(Journal of Constructional Steel Research, 2019-11-15)The presence of column initial imperfections in a steel frame can increase deflections and decrease its load carrying capacity. A method is proposed for evaluating the lateral stiffness, inter-storey displacement and ... -
The effects of curing- and service- conditions on durability of reinforced concrete structures
(University of Waterloo, 2020-06-01)Reinforced structural concrete is a critical building block of our civil infrastructure, especially our roads and bridges. As the transportation network grows, and our current infrastructure continues to age, the social ... -
Effects of GFRP Reinforcement on the Compressive Behaviour of Square SPF Timber Columns
(University of Waterloo, 2021-09-22)Wood structural elements are gaining popularity of use through greater availability of engineered wood products and a more sustainability focused construction industry. Stringent modern codes and extreme load cases (e.g., ... -
The Effects of Nuclear Radiation on Aging Reinforced Concrete Structures in Nuclear Power Plants
(University of Waterloo, 2010-08-31)In this thesis we look at one of the aging mechanisms that may have affected current aged Nuclear Power Plants (NPPs). Irradiation as an age-related degradation mechanism is studied for Reinforced Concrete (RC) in NPPs. ... -
Effects of Prolonged Shutdown on the Performance and Microbial Activity of Intermittently Operated Biofilters for Manganese Removal from Groundwater: Pilot Scale Study
(University of Waterloo, 2024-04-18)Apart from aesthetic concerns, manganese (Mn) in drinking water has been associated with cognitive and neurobehavioral effects in children. Recently Health Canada has changed its drinking water guidelines for Mn from an ... -
The effects of soil heterogeneity on the performance of horizontal ground loop heat exchangers
(University of Waterloo, 2013-01-25)Horizontal ground loop heat exchangers (GLHE) are widely used in many countries around the world as a heat source/sink for building conditioning systems. In Canada, these systems are most common in residential buildings ... -
Effects of transient borehole deformation on rock stress and rock properties analysis
(University of Waterloo, 2021-06-02)Understanding the in-situ stresses and rock mechanical properties is necessary to ensure successful drilling, quality wellbore completion, and reservoir performance analysis. However, the conventional determination methods ... -
The effects of vegetation on the estimation of low flows: a high-resolution study in natural streams featuring novel techniques
(University of Waterloo, 2018-07-12)Accurate measurement of stream discharge under low-flow conditions is of utmost importance to many water resources practitioners. In most of the world, discharge is estimated at gauging stations using rating curves. These ... -
Efficient Computational Methods for Structural Reliability and Global Sensitivity Analyses
(University of Waterloo, 2013-05-02)Uncertainty analysis of a system response is an important part of engineering probabilistic analysis. Uncertainty analysis includes: (a) to evaluate moments of the response; (b) to evaluate reliability analysis of the ... -
Efficient treatment of climate data uncertainty in ensemble Kalman filter (EnKF) based on an existing historical climate ensemble dataset
(Elsevier, 2019-01)Successful data assimilation depends on the accurate estimation of forcing data uncertainty. Forcing data uncertainty is typically estimated based on statistical error models. In practice, the hyper-parameters of statistical ... -
Electrogeneration of hydrogen peroxide for applications in water/wastewater treatment
(University of Waterloo, 2017-08-29)Hydrogen peroxide (H2O2) is an effective, environmentally friendly oxidant used directly and in advanced oxidation processes for water and wastewater treatment. Although most H2O2 is currently manufactured offsite, ... -
An Empirical Study of Bicyclists' Turning Behaviour at Signalized Intersections
(University of Waterloo, 2018-08-23)Efforts to increase cycling mode share have seen some success in North America, though challenges persist due to real and perceived safety issues. Of particular concern are left turns at signalized intersections. Left turns ... -
Enabling Human-Machine Collaborative Inspections through Smart Infrastructure Metaverse
(University of Waterloo, 2024-02-08)Over the last ten years, novel Artificial Intelligence (AI) based structure assessment methods and tools have been proposed to identify and quantify structural damage indicators (e.g., cracking, spalling, corrosion, etc.) ... -
Engineered Fibre-reinforced Concrete Systems for Bridge Deck Link Slab Applications
(University of Waterloo, 2014-01-24)Rehabilitation and maintenance of the aging transportation infrastructure are of major concern in the Province of Ontario. A large portion of this work is related to the durability of highway bridges around the province. ...