Piezometer 4
Piezometer 4 : An instrument used for measure water levels or pore water pressures in embankments, foundations, abutments, soil, rock, or concrete. (See instrumentation.) Piping: The progressive development of internal erosion by seepage. Plunge pool: A natural or artificially created pool that dissipates the energy of free falling water. Predominant period: The period(s) at which maximum spectral amplitudes are shown on response spectra. Normally, acceleration response spectra are used to determine the predominant period(s) of the earthquake ground motion
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