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originally posted by: Jarocal
Many people marvel at the stonework and how it has withstood the years. Yet I see few postings that actually look at the actual engineering behind the construction. Below is a link about the water drainage responsible for allowing the structures to not wash away. While the author covers the fact they had drainage I don't think he stresses the slowing of the water flow with their drainage system to combat the destructive nature of fast flowing water. Their use of ungraded stone fill would act like an unseen gabion allowing for adequate water drainage without allowing runoff to gain enough speed to be erosive.
originally posted by: Blackmarketeer
Thanks for the interesting read. Certainly the Inca engineers had to tame water runoff before any ascetic concerns were made, that would be common for most early civilizations - earth works designed to tame flood and runoff waters as well as allowing for irrigation.
originally posted by: skalla
a reply to: Jarocal
A splendid read, and a fascinating site overall. You are a very welcome addition to this place