Which consequence resulted when Roman road construction exceeded gradients of 10-12% on mountain passes?

💡 Explanation

Increased gradient leads to concentrated water runoff, where Hydraulic action caused severe surface erosion because the increased velocity of water flow overwhelms the original drainage plans. Therefore erosion risk increased, rather than buckling arising from heat directly impacting pavement.

• Which outcome resulted from the Byzantine Empire's isolation of visiting dignitaries during negotiations?
• Which risk increased as Roman arch construction transitioned to using concrete?
• Which outcome results when ancient Chinese cast iron plows encountered significantly varying soil densities?
• Which structural effect arises when Gothic cathedral buttresses experience uneven settlement?
• During the Bronze Age collapse (~1200 BCE), which contributing factor most directly exacerbated societal vulnerability after widespread drought?
• Which benefit resulted from Aztec chinampa agriculture employing 'waffle garden' designs?