Which structural risk increases when differential settlement occurs underneath a ziggurat mud-brick base?

💡 Explanation

When differential settlement occurs under a ziggurat, uneven loads are imparted because consolidation of the soil varies, creating stress concentrations leading to potential shear failure. Therefore terrace collapse becomes a risk, rather than the other choices which are related, but dependent on alternative mechanisms like groundwater, wind or animals.

• Which systematic error increases when using a sextant with a loose index mirror on a sailing ship?
• Which structural instability challenged the height scaling of medieval turret fortifications?
• Which risk increases when ancient Mesopotamian bronze sickle blades are repeatedly used to harvest reeds in brackish water?
• Which outcome optimized crop production in the chinampa agricultural system of Mesoamerica?
• In pre-Columbian chinampa agriculture, which environmental feedback occurred when intensive maize cultivation depleted soil nutrients without crop rotation?
• Which structural weakness increased in wooden sailing ships as lumber was harvested from increasingly distant sources?