Accession Number : ADA260164


Title :   Goleta Sewer Outfall Stability Tests


Descriptive Note : Master's thesis


Corporate Author : OREGON STATE UNIV CORVALLIS DEPT OF CIVIL ENGINEERING


Personal Author(s) : Bailey, Scott D


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a260164.pdf


Report Date : 19 Oct 1992


Pagination or Media Count : 147


Abstract : Large scale laboratory tests were conducted to determine the stability of armor rock covering an existing sewer outfall for the city of Goleta, California. The testing consisted of two phases: phase one modeled the existing condition of the outfall and phase two modeled the outfall with proposed armor rock to provide additional stability. Wave tests were conducted in prototype water depths ranging from 15 to 45 feet at scale ratios ranging from 1: 4.52 to 1: 15.5. Prototype wave conditions included both random and monochromatic waves with periods ranging from 14 to 22 seconds and wave heights ranging from 4 to 25 feet. Wave data were taken utilizing seven resistive wave gages, two acoustic current meters and a sonic wave profiler. In addition, the test runs were video recorded from two underwater and one above water locations. Test conditions for each test run are presented in tabular form. Wave conditions were analyzed by employing Fourier analysis to determine sine and cosine amplitudes of each frequency component, which were interpreted to separate the incident and reflected waves. Results are summarized in tabular form at both model and prototype scale. Significant hydrodynamic properties are presented graphically in non-dimensional form and compared to theoretical or empirical models. Similar trends were observed in both monochromatic and random wave tests. Breaking wave heights were found to be within 75% of the theoretical maximum wave height.


Descriptors :   *ARMOR , *LABORATORY TESTS , *COVERINGS , *CIVIL ENGINEERING , *ROCK , *SEWERS , TEST AND EVALUATION , RATIOS , WATER , SCALE , AMPLITUDE , UNDERWATER , URBAN AREAS , FOURIER ANALYSIS , GAGES , HEIGHT , HYDRODYNAMICS , CALIFORNIA , ACOUSTICS , DEPTH , PROTOTYPES , MODELS , STABILITY , FREQUENCY


Subject Categories : Civil Engineering


Distribution Statement : APPROVED FOR PUBLIC RELEASE