Which outcome increased the risk for Inca stone arch construction?

💡 Explanation

Localized high tectonic stress could displace keystones, increasing the collapse risk because **shear failure** will occur in areas of compression. Therefore stresses were managed, rather than compressive strength being dominant, preventing material failure.

• Which outcome occurs when an Inca suspension bridge's fiber ropes experience prolonged static loads in humid Andean conditions?
• Which mechanism caused 'wallowing' in 18th-century timber-hulled ships despite external hull reinforcement?
• Which error increases in prolonged use of a cast-brass astrolabe?
• Which challenge emerged when Roman fortifications increasingly employed lime mortar?
• Which structural risk increased for stone fortifications built during the Roman empire when subjected to undermining?
• Which risk increases when a Roman road's sub-base experiences continuous water saturation?