Browsing Civil and Environmental Engineering by Title
Now showing items 638-657 of 881
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Performance of Biological Filters for Drinking Water Treatment and Their Use for High Pressure Membrane Biofouling Control
(University of Waterloo, 2016-01-18)Biofiltration is a promising green drinking water treatment technology that can reduce the concentration of biodegradable organic matter (BOM) in water. Direct biofiltration or biofiltration without pretreatment (BFwp) ... -
Performance of Large Diameter Residential Drinking Water Wells - Biofilm Growth: Laboratory and Field Testing
(University of Waterloo, 2011-11-23)In the first phase of this project three enhanced large diameter (> 60 cm) residential wells were constructed at a study site in Lindsay, Ontario. Two wells were constructed using concrete tile casing while the other well ... -
Performance of Load-Bearing Cold-Formed Steel Wall Systems with Web-Perforated Studs Subjected to Standard Fire
(University of Waterloo, 2017-01-23)Load-bearing cold-formed steel (CFS) wall systems are commonly constructed with CFS C-shape studs with one or two layers of fire-rated sheathing attached to both sides. In practice, perforations are placed in stud webs to ... -
Performance of Pillars in Rock Salt Mines
(University of Waterloo, 2010-09-30)The viscoelastic and creep properties of salt create challenges in the design of salt mines. Salt undergoes steady state creep for a long period of time, and the time of failure is not easily predicted. Developing functions ... -
The Performance of Rainscreen Walls in Coastal British Columbia
(University of Waterloo, 2007-09-11)This thesis examines the widespread moisture problems which emerged over the past twenty years in buildings throughout coastal British Columbia, commonly known as ‘leaky condos’. A literature review of building physics and ... -
Performance of Soil Borehole Thermal Energy Storage System under Different Natural and Engineered Subsurface Conditions
(University of Waterloo, 2023-12-18)Borehole thermal energy storage (BTES) system, a type of underground thermal energy storage (UTES) systems, is a promising technology for sustainable space heating. BTES stores thermal energy in subsurface media (rock or ... -
Performing Short-Term Travel Time Prediction on Arterials
(University of Waterloo, 2014-09-23)As urban centers become larger and more densely developed, their roadway networks tend to experience more severe congestion for longer periods of the day and increasingly unreliable travel times. Proactive traffic management ... -
Persulfate Oxidation Coupled With Microbial Sulfate Reduction as a Combined Remedy
(University of Waterloo, 2015-01-20)Groundwater contamination by petroleum hydrocarbon (PHC) compounds including the high impact and persistent aromatic compounds such as benzene, toluene, ethyl benzene and xylene (BTEX) poses serious risk to human health ... -
Persulfate Persistence and Treatability of Gasoline Compounds
(University of Waterloo, 2010-08-06)Petroleum hydrocarbons (PHCs) such as gasoline are ubiquitous organic compounds present at contaminated sites throughout the world. Accidental spills and leakage from underground storage tanks results in the formation of ... -
Phosphorus Removal and Recovery from Wastewater using Sorbent Technologies
(University of Waterloo, 2018-08-03)Phosphorus (P) is an essential nutrient in fertilizers that are necessary for food production. Wastewater may represent a renewable source of nutrients if methods for recovering P from dilute wastewater streams can be ... -
Phosphorus Sequestration for Control of Cyanobacterial Growth in Drinking Water Reservoirs
(University of Waterloo, 2016-10-05)Engineered drinking water reservoirs are designed to facilitate particle settling for reduction of turbidity prior to conveyance to a drinking water treatment plant (DWTP). Fine cohesive sediment particles can carry ... -
The pie sharing problem: Unbiased sampling of N+1 summative weights
(Elsevier, 2022-02)A simple algorithm is provided for randomly sampling a set of N+1 weights such that their sum is constrained to be equal to one, analogous to randomly subdividing a pie into N+1 slices where the probability distribution ... -
A Pilot Study Regarding the Use of Food Waste Grinders in a Multi-Unit Residential Building
(University of Waterloo, 2022-07-25)This study evaluated the impact of food waste grinders (FWGs) in multi-unit residential buildings (MURBs) that also had access to green bins (GBs) on solid waste and wastewater generation. A 15-month technical sampling ... -
Pipe and Ductwork Progress Tracking using 3D Sensing Technologies
(University of Waterloo, 2012-04-30)Automated construction progress tracking is becoming critical to efficient and effective construction management. More and more construction companies are putting aside the old way of tracking progress, which was mainly ... -
A Planning Model for Optimizing Locations of Changeable Message Signs
(University of Waterloo, 2004)Changeable Message Signs (CMS) are commonly utilized by transportation agencies to inform motorists of traffic, roadway, and environmental conditions. They may be used to provide information, such as delay and alternate ... -
Porous Asphalt Pavement Designs: Proactive Design for Cold Climate Use
(University of Waterloo, 2007-08-14)Porous asphalt pavements offer an alternative technology for stormwater management. A porous asphalt pavement differs from traditional asphalt pavement designs in that the structure permits fluids to pass freely through ... -
Practical Performance Criteria and Durability Prediction Modeling of Glass Fiber Reinforced Polymer (GFRP) Bars
(University of Waterloo, 2017-05-15)Glass fiber reinforced polymer (GFRP) bars are becoming a reasonable alternative to steel bars in reinforced concrete members as a method to address issues of corrosion and electromagnetic interference. This growing interest ... -
Pragmatic Groundwater-Surface Water Model Coupling with Unstructured Grids
(University of Waterloo, 2021-07-29)Faced with an array of water issues exacerbated by a rapidly changing climate, hydrologists and hydrogeologists have increasingly found themselves needing to simultaneously model the groundwater and surface water domains ... -
Pre-Treatment Evaluation Prior to Ultrafiltration in Secondary Effluent Treatment for Water Reuse
(University of Waterloo, 2015-12-17)Reusing wastewater can assist in solving water shortage problems, reduce the amount of wastewater discharged to surface water bodies and, by extension, alleviate its adverse effects on humans and the environment. Organics ... -
Precast Concrete Inlay Panels: Rehabilitation Strategy for High-Volume Highways in Ontario
(University of Waterloo, 2018-08-03)The Ministry of Transportation of Ontario (MTO) has responsibility for many high-volume highways throughout the province of Ontario, including the 400-series highways. Several of these highways have exhibited a premature ...