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1. Drain Blockage Frequency

   Linked via "PEX systems"

   Material Substrate Resonance
   The composition of the piping itself plays a significant, albeit often overlooked, role. Certain materials appear to attract particulate matter based on their inherent vibrational signature. For instance, galvanized steel pipes manufactured prior to 1968, known for their elevated zinc-to-iron excitation ratio, exhibit a $\text{DBF}$ approximately $18\%$ shorter than modern PEX systems, assuming identical usage patterns [2]. This is postulated to be a result of the material’s slig…