Browsing by Department "Civil Engineering"
Now showing items 201-220 of 394
Flood Debris Build-Up Loading and Assessment of Adequacy of ALDOT Bridge Pile Bents During Extreme Flood/Scour Events
(2005-08-15)
A description of a flood debris build-up loading and an assessment of the adequacy of a chosen group of typical ALDOT bridge pile bents having various loading conditions and under various amounts of scour are presented in ...
Fragment Response of Unreinforced Concrete Masonry Walls Subjected to Blast Loading Conditions
(2020-04-21)
There are very few methods for predicting the fragment velocity and fragment production of an unreinforced, ungrouted concrete masonry wall. Those that do exist often require large computational resources or fail to predict ...
Full Scale Testing of Two Excavations in an Unsaturated Piedmont Residual Soil
(2016-01-06)
Residual soil behavior can be difficult to predict using current geotechnical formulas, because it exhibits properties that are not common to transported soils. These unique properties are mainly influenced by the fabric ...
Full-Scale Implementation and Testing of Non-Prestressed Full-Depth Precast Bridge Deck Panels with Continuous Shear Pockets
(2012-08-16)
The Alabama Department of Transportation (ALDOT) currently has over three
miles of major interstate bridges near downtown Birmingham involving approximately
600,000 square feet of deck area with significant levels of ...
Gantt Resource Management System Applied to Construction
(2015-05-04)
The current scheduling techniques such as the Critical Path Method (CPM) do not directly take resources (i.e. material, equipment, manpower) into consideration when producing schedules. As a result resource requirements ...
A Geographic Information Systems (GIS) Approach for Estimating Runoff Characteristics for Erosion and Sediment Control Practices in the Southeastern United States
(2015-07-30)
Soil discharged from construction sites to nearby waterbodies have a negative impact on water quality and the aquatic ecosystem. Therefore, it is necessary to develop a stormwater pollution prevention plan (SWPPP) in ...
Geysering Caused by the Sudden Release of Pressurized Air Pockets
(2017-04-26)
Uncontrolled air pockets released from water filled shafts can lead to geysering in stormwater systems. Such occurrences are deleterious from public health and environmental standpoints and can cause property and structural ...
Gravity Current and Air Pocket Entrapments Caused by Shear-Flow Instabilities in Rapid-Filling Pipes
(2018-11-14)
Understanding the behavior of air-water interactions in closed conduits is very important for urban water systems that are subject to rapid filling conditions, such as stormwater systems during intense rain events. Among ...
Guidance to Support Vulnerable Road Users in the State of Alabama
(2017-04-21)
Over the past decade, communities across Alabama and the United States experienced significant increases in multi-modal traffic. While this growth has been shown to promote sustainable and livable communities, reduce ...
Higher Ethers as Replacement Oxygenates for Methyl Tertiary Butyl Ether in Gasoline: Synthetic and Environmental Aspects
(2007-05-15)
The use of oxygenates, particularly methyl tertiary butyl ether (MtBE), in reformulated gasoline has reduced the levels of carbon monoxide and unburned hydrocarbons in ambient air. However, the widespread contamination ...
Humic Acids Resistant Gene Quantification Assay in Soils
(2011-05-17)
Humic acids are the most commonly reported group of inhibitors in environmental samples. Due to the ubiquity and abundance of humic acids in the environment, they are often co-extracted along with the nucleic acids and ...
Hydraulic Management of SDI Wastewater Dispersal in an Alabama Black Belt Soil
(2009-12-11)
Approximately 52% of the 14000 km2 Alabama Black Belt region is unsuitable for conventional onsite wastewater treatment systems because of low hydraulic permeability, high water table, or other restrictive soil properties. ...
Hydrodynamic and Water Quality Simulations in the Perdido and Wolf Bay System
(2019-05-05)
The widespread fish kills of Gulf menhaden (Brevoortia patronus) were reported beginning on 7/31/2015 in the Cotton Bayou, Orange Beach City, Alabama. Although some possible reasons for the fish kill event were provided ...
Hypothetical Analysis on Cost Effectiveness of Centerline Rumble Strips as a Crash Countermeasure
(2006-05-15)
Rural roads are mostly undivided highways with high speed, two-way traffic.
These factors coupled with inattentive driver behavior increase the risk of frontal and
sideswipe collisions. Widening of roads and installation ...
Identification of Factors Contributing to Geographic Scale and Mode Choice of Long-Distance Travel
(2014-07-11)
As long-distance travel increases it is emerging as an increasingly important consideration in transportation planning. Not only is this in response to an increase in magnitude but also in recognition that such trips possess ...
Identification of Selenium Reducing Species Within and Suggested Optimization of a Passive Biological Reactor
(2016-12-09)
As concern for the environment moves to the forefront of the issues considered most pressing by society, mankind is becoming increasingly aware of the harmful things it discharges into the ecosystem in the name of industry ...
Identifying Potential Cisco Refuge Lakes in Minnesota under Future Climate Warming Scenarios
(2016-12-09)
Fish habitat models were developed and applied to investigate the impacts of future climate change on cisco oxythermal habitat in Minnesota lakes. Cisco Coregonus artedi is the most common cold-water stenothermal fish ...
Immobilization of lead from aqueous solution by using carboxymethyl cellulose stabilized iron sulfide nanoparticles
(2017-11-27)
Lead pollutant has attracted more attention recently. Moreover, the use of patent iron sulfide nanoparticles is more and more extensive for various contaminants removal. In this study, FeS nanoparticles is prepared with ...
Immobilization of Mercury by Stabilized FeS Nanoparticles and Effects of Oil Dispersant on Sorption/Desorption and Photodegradation of Polycyclic Aromatic Hydrocarbons
(2014-04-25)
Iron sulfide (FeS) nanoparticles were prepared with sodium carboxymethyl cellulose (CMC) as a stabilizer, and tested for enhanced removal of mercury (Hg(II)) from water, soil and sediment. The presence of CMC at ≥0.03 wt.% ...
Immobilization of Mercury Using Iron Sulfide Minerals
(2007-08-15)
Mercury is a pervasive pollutant that has caused environmental and health problems throughout the world. Numerous industries including coal-fired power plants and chlor-alkali plants have discharged mercury into the ...