1. History of the Colosseum
To solve the issue of the site becoming a wetland, and to prevent the Colosseum from flooding and its foundation weakening each time the lake flooded, the drainage and foundation of the building were engineered to perfection. Rather than building walls around the lake, the engineers designed the foundation to sit on the clay bed of the lake, nearly 25' below the ground level with drains built under the entire circumference of the foundation, as well as drains throughout the entire area inside the Colosseum spaced every 12'. ... The engineers ended up designing the foundation with the...
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