Which adverse outcome develops earliest when inappropriate terrace fill-slope angles increase during Pre-Columbian Andean infrastructure projects?

💡 Explanation

Increased terrace fill-slope angles elevate the shearing stresses within the terrace substrate due to gravity. This activates stress concentration, the mechanism by which tensile cracks appear, earlier in unstable terraces; therefore tension fracturing occurs first, rather than other issues dependent on water or soil.

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