26 Apr 2021

Camp Perry Historic District Landscape Inventory and Viewshed Analysis

Abstract: The National Historic Preservation Act of 1966 (NHPA) established the National Register of Historic Places (NRHP), which requires federal agencies to address their cultural resources, defined as any prehistoric or historic district, site, building, structure, or object. NHPA section 110 requires federal agencies to inventory and evaluate their cultural resources. Section 106 requires them to determine the effect of federal undertakings on properties deemed eligible or potentially eligible for the NRHP. Camp Perry Joint Training Center (Camp Perry) is located near Port Clinton, Ohio, and serves as an Ohio Army National Guard (OHARNG) training site. It served as an induction center during federal draft periods and as a prisoner of war camp during World War II. Previous work established boundaries for an historic district and recommended the district eligible for the NRHP. This project in-ventoried and evaluated Camp Perry’s historic cultural landscape and outlined approaches and recommendations for treatment by Camp Perry cultural resources management. Based on the landscape evaluation, recommendations of a historic district boundary change were made based on the small number of contributing resources to aid future Section 106 processes and/or development of a programmatic agreement in consultation with the Ohio State Historic Preservation Office (SHPO).

26 Apr 2021

AIS Data Case Study: Selecting Design Vessels for New Jersey Back Bays Storm Surge Barriers Study

Abstract: The purpose of this Coastal and Hydraulics Engineering technical note (CHETN) is to describe how historic Automatic Identification System (AIS) vessel position data were used to identify a design vessel for use in a storm surge barrier design study. Specifically, this CHETN describes how the AIS data were accessed, how the universe of vessel data was refined to allow for design vessel selection, and how that selection was used in a storm surge barrier (SSB) study. This CHETN draws upon the New Jersey Back Bays Coastal Storm Risk Management Feasibility Study (USACE-NAP 2019), specifically the Appendix B.2 Engineering Appendix Civil document1. The New Jersey Back Bays Study itself builds upon the work of the North Atlantic Coast Comprehensive Study (NACCS) initiated after Hurricane Sandy in 2012 (USACE 2015a).

26 Apr 2021

Houston Ship Channel Expansion Channel Improvement Project (ECIP) Numerical Modeling Report: Increased Channel Width Analysis

Abstract: The Houston Ship Channel is one of the busiest deep-draft navigation channels in the United States and must be able to accommodate larger vessel dimensions over time. The U.S. Army Engineer District, Galveston (SWG) requested the U.S. Army Engineer Research and Development Center, Coastal and Hydraulics Laboratory perform hydrodynamic and sediment modeling of proposed modifications along the Houston Ship Channel. The modeling results are necessary to provide data for salinity and sediment transport analysis as well as ship simulation studies. SWG provided a project alternative that includes channel widening, deepening, and bend easing. After initial analysis, two additional channel widths in the bay portion of the Houston Ship Channel were requested for testing. The results of these additional channel widths are presented in this report. The model shows that the salinity does not vary significantly due to the channel modifications being considered for this project. Changes in salinity are 2 parts per thousand or less. The tidal prism increases by less than 2% when the project is included, and the tidal amplitudes increase by no more than 0.01 meter. The residual velocity vectors do vary in and around areas where project modifications are made.

26 Apr 2021

Automated Construction of Expeditionary Structures (ACES): Materials and Testing

Abstract: Complex military operations often result in U.S. forces remaining at deployed locations for long periods. In such cases, more sustainable facilities are required to better accommodate and protect forward-deployed forces. Current efforts to develop safer, more sustainable operating facilities for contingency bases involve construction activities that require a redesign of the types and characteristics of the structures constructed, that reduce the resources required to build, and that decrease the resources needed to operate and maintain the completed facilities. The Automated Construction of Expeditionary Structures (ACES) project was undertaken to develop the capability to “print” custom-designed expeditionary structures on demand, in the field, using locally available materials with the minimum number of personnel. This work investigated large-scale automated “additive construction” (i.e., 3D printing with concrete) for construction applications. This report, which documents ACES materials and testing, is one of four technical reports, each of which details a major area of the ACES research project, its research processes, and its associated results. There major areas include System Requirements, Construction, and Performance; Energy and Modeling; Materials and Testing; Architectural and Structural Analysis.