18 webcasts found
+ 81 past events found
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Webinar: Introduction to Embankment Dams
The overwhelming majority of dams in the world, and also in the United States, are embankment dams. This webinar is intended as an overview of embankment dams, to serve as an introduction for those relatively new to dam safety and a refresher for the more experienced practitioner. The webinar will begin with a review of the history of embankment dams from antiquity to today and comments on today’s inventory of dams. Types of embankment d...
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Webinar: Introduction to Addressing Ina...
The most common deficiency at dams in North America is inadequate spillway capacity. Inadequate spillway capacity can result in overtopping of a dam during flood events. This is especially a concern for embankment dams where overtopping of the dam embankment can cause breaching of the dam and uncontrolled release of the impounded water. This failure mode accounts for more than 40 percent of recent dam failures. A broad overview of the many app...
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Webinar: Findings of the Oroville Dam S...
At a height of 770 feet, Oroville Dam is the tallest dam in the United States. On February 7, 2017, a section of the concrete chute slab of the service spillway at Oroville Dam failed during spillway discharge. Several days later, as the California Department of Water Resources was evaluating and managing discharges through the damaged service spillway during a large rainfall event, the emergency spillway activated for the first time in the pr...
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Webinar: Risk Communication for Dams
Communication is important in all aspects of dam safety within an organization, with the public, and with the specific owners or stakeholders of a project. Risk communication and stakeholder participation should ensure that (1) responsible and impacted stakeholders will be partners and be afforded the opportunity to participate in decisions that impact them, and (2) communications regarding potential inundation hazard, consequences, and share...
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Webinar: Analysis of Concrete Arch Dams
The purpose of this course is to provide a brief introduction into the science of concrete arch dams. The review will touch on design methods used in the past, but primarily focus on the methods used in the current state of the practice. A historical review of construction techniques will be discussed, and how that relates to evaluations and the physical behavior of the structures. The basic loads and loading conditions used for analysis will...
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Webinar: Re-examination of the 2004 Fai...
This webinar will review the 2004 failure of Big Bay Dam. A potential failure modes framework was used to make the forensic root-cause assessment based on data and information provided by the State of Mississippi. A detailed timeline of the failure obtained through review of court proceedings will be presented including the appearance of a number of distress indicators, the seriousness of which were not recognized and acted upon by the Owner a...
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Webinar: Managing Increased Risk During...
Dams are inherently vulnerable during rehabilitation construction due to risks such as a weakened/reduced cross section of the structure or reduced flood passage capacity. Successful management of the risks salient to dam construction requires proactive identification, planning, and mitigation by all parties. This 2-hour webinar will examine typical risk categorization with a focus on dam safety during construction, the risk identification and...
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Webinar: Designing Spillways to Mitigat...
This course will present potential failure modes for chute spillways and ways to design these spillways to minimize the potential for failure. 1. Understanding failure modes such as cavitation and hydraulic jacking that can affect chute spillways. 2. How to evaluate potential spillway design and construction details that could lead to failure modes. 3. How to evaluate potential spillway failure mode4. Understanding design details that can hel...
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Webinar: Evaluation and Maintenance of...
Many dams and levees have embankment drains, structure underdrains, and relief wells to control seepage through and beneath the dam and piezometers to monitor the performance of these features. Dam and levee owners, managers, and maintenance staff may be uncertain about the function of these features and what maintenance is required. This webinar will summarize seepage principles and terminology in layman's terms and describe the purposes and...
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Webinar: Drone Technology Integrated in...
During recent years the use of unmanned aerial vehicles (UAVs) or drone technology for the inspection and monitoring of dams and levees has increased. This rate of integration is, in part, due to FAA regulation revisions and the advantages regarding personnel safety, flexibility, speed and volume of data acquisition, and cost. This webinar presents an overview of drones and how this technology can be incorporated into dam safety inspections an...
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