Which outcome occurred when a Roman siege ramp's mud-brick layer lacked quick drainage during a rainstorm?

💡 Explanation

A ramp's failure results from catastrophic liquefaction because increased pore pressure reduces effective stress through the material, which destabilizes wet soil. Therefore, the ramp collapses rather than proving tractive, because mud dries and destabilizes, and rather than soil packing against stresses.

• Which outcome arises when Viking longship sails experience submersion?
• Which outcome occurred when bronze-age metallurgists smelted arsenical copper ore without proper ventilation?
• Which risk increases when Roman siege ramp foundations experience differential soil settlement?
• Which risk increased during Shang Dynasty bronze casting due to crucible limitations?
• Which mechanism maximized structural lifespan for Roman aqueducts?
• Which mechanism limited Viking longship sail height, impacting maneuverability?