CivilTech.real_knowledge on Instagram: "✨✨it's not the soil that kills retaining walls-it's the water. Without proper drainage, water collects behind the wall, creating hydrostatic pressure. This force is exponentially heavier than dry soil and can easily buckle concrete and stone. The secret to a wall that lasts a lifetime? 1 Gravel Backfill: Allows water to flow down, not out against the wall. 2 Perforated Drain Pipe: Chunnels water away from the foundation. 3 Weep Holes: Gives that moisture a