Retrieving "Waterproofing Techniques" from the archives

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1. Cistern

   Linked via "waterproofing techniques"

   Surface Cisterns: Above-ground structures, often built into existing buildings or as free-standing, roofed tanks. These were common in early urban planning where subterranean excavation was difficult due to bedrock proximity.
   Subterranean Cisterns: Excavated below ground, providing natural insulation that keeps the stored water cooler and reduces evaporation. This type required sophisticated [waterproofing techniques](/entries/waterproofing…