Browsing Civil engineering by Title
Now showing items 274-293 of 413
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Pairing Anaerobic Ammonia Oxidation with Newly Discovered Nitrite-Supplying Metabolisms for Enhanced Mainstream Nitrogen Removal
In wastewater treatment, sidestream nitrogen removal with anaerobic ammonia oxidation (anammox) has reduced cost, energy demand, and potentially greenhouse gas (GHG) emission as compared to conventional nitrification-den ... -
Parametric Structural Design of Vertical-Axis Tidal Turbine Arrays
This thesis presents an approach for the structural design of vertical-axis tidal turbinearrays, including both the turbine blades and the supporting superstructure. Design load cases and performance goals are established ... -
Particle Filter data assimilation of streamflow in basins with seasonal snow for initializing short- to medium-range streamflow forecasts
Although short- to medium-range streamflow forecasting is vital for many water management decisions the quality of streamflow forecasts in the United States has not improved over time. A possible explanation for this is ... -
Passive Pitch Control in Marine Hydrokinetic Turbine Blades
Green and renewable energy technologies are becoming more and more necessary as demand for energy grows exponentially around the world. Recently, there has been increased interest in using marine hydrokinetic turbines to ... -
Pathways toward rapid wastewater treatment response during the global refugee crisis
The aftermath of several natural and humanitarian catastrophes has demonstrated the potential for environmental impacts as displaced populations overwhelm wastewater treatment facilities in host communities. A systematic ... -
Performance-Based Framework for Assessing Thermal Comfort Conditions at the HUB on the University of Washington Campus
Mechanical practices for preserving commercial building indoor environmental quality, specifically within the thermal comfort domain, require extensive resource inputs. On average, building heating, ventilation, air ... -
Population dynamics of Holopedium gibberum in a Pacific Northwest drinking water reservoir: effects of temperature, food, and competition
(2012-09-13)<italic>Holopedium gibberum</italic> is one of the few cladocerans to create a gelatinous sheath. For this reason it can clog drinking water filtration facilities. In order to better understand the population dynamics of ... -
Post-Earthquake Assessment of Reinforced Concrete Frames
(2012-09-13)Current post-earthquake inspection of structures relies on certified inspectors to make an assessment of the existing safety of the structure based primarily on qualitative measures. Completing the required inspection can ... -
A Pre-Tensioned Bridge Bent System for Accelerated Bridge Construction
Nearly all bridge bents (intermediate supports) are constructed of cast-in-place reinforced concrete. Such bridges have served the nation well in the past, but to meet current design expectations, they need to be improved ... -
Precipitation and processing of solids from high pH, high Si groundwater
This research is concerned with the treatment of highly contaminated groundwater from the former Occidental Chemical Corporation manufacturing site at Tacoma, WA. During various stages of production that took place at this ... -
Prediction of the residual strength of liquefied soils
(2003)Soil liquefaction has led to extensive damage to buildings, bridge, and lifelines in past earthquakes. While the effects of liquefaction can be manifested in many ways, the most devastating are in the form of flow slides. ... -
Prediction of Time-Dependent Stresses and Deflections in Prestressed, Concrete Girders: From Start of Fabrication to End of Service Life
(2014-04-30)Fabricators and contractors need accurate prediction of the camber in precast, prestressed, concrete girders. Large differences in the camber between adjacent girders lead to significant construction difficulties that often ... -
Preparing cities for package demand growth: predicting neighborhood demand and implementing truck VMT reduction strategies
E-commerce has empowered consumers to order goods online from anywhere in the world with just a couple of clicks. This new trend has led to significant growth in the number of package deliveries related to online shopping. ... -
Probabilistic Modeling of Shallow Landslides at Regional Scales
Mountainous areas are challenging to manage and maintain access due to their remoteness and steep topography. Shifting hydrologic regimes from changing climate are projected to intensify these challenges. Of particular ... -
Processing and Analysis of Lidar Derived Point Cloud Models of Low-Rise Large-Volume Steel Frame Buildings Damaged in Hurricane Michael
Hurricane Michael made landfall in Panama City on the Florida Panhandle on October 10, 2018 as a Category 5 hurricane and caused substantial damage. Low-rise large-volume steel frame buildings (LRLVBs) suffered in particular, ... -
Quantification of uncertainties in snow accumulation, snowmelt, and snow disappearance dates
(2013-11-14)Seasonal mountain snowpack holds hydrologic and ecologic significance worldwide. However, observation networks in complex terrain are typically sparse and provide minimal information about prevailing conditions. Snow ... -
QUANTIFYING AIR QUALITY, HUMAN HEALTH, AND CLIMATE IMPACTS FROM ENERGY SYSTEMS: ELECTRICITY AND TRANSPORTATION
Atmospheric emissions from the energy sector contribute to air pollution and climate change. Harmful gases in ambient air degrade air quality; exposure to those gases can lead to health impacts locally and regionally. ... -
Quantifying and Modeling Subgrid Scale Snow Depth Variability in Forested Areas Throughout Multiple Climates in the Western United States
The mountain snowpack provides natural storage of freshwater. This natural storage far exceeds the extent of manmade reservoirs. Furthermore, watersheds throughout the western United States can be predominantly covered in ... -
Quantifying and Modeling the Influence of Forest on the Magnitude and Duration of Mountain Snow Storage in the Pacific Northwest, USA
Forests strongly influence the amount and duration mountain snow storage because forest cover modifies both snow accumulation and ablation processes. Quantifying and predicting forest effects on snow processes and snow ...