Which risk to the structural integrity of ziggurats increased when seasonal flooding altered a region's clay composition?

💡 Explanation

Settlement cracking emerges as the risk because, due to altered clay composition from seasonal flooding, sulfate attack increases, causing expansion and fractures within the brickwork; therefore structural stability decreases rather than simple erosion or seismic effects.

• Which consequence results when the ratio of potassium nitrate to sulfur and charcoal in early Chinese gunpowder varies significantly?
• Which inefficiency arose from the Mughals' 'charbagh' gardens integrating sloped aqueducts?
• Which failure mode resulted from concentrated breaching of medieval castle walls?
• Which structural consequence results from sustained freezing within the pozzolan concrete of a Roman aqueduct?
• Which structural consequence occurs when a Mesopotamian ziggurat's mud-brick core experiences prolonged water infiltration?
• Which consequence results from prolonged exposure to seawater for wrought iron components in a Roman ballista?