Which risk increased inside besieged medieval castles utilizing covered hoarding?

💡 Explanation

Spalling risk grows from mangonel stone impacts because **compressive stress** buildup transfers to tension at the inner surface causing material ejection; therefore, sections broke off, rather than the wall remaining intact under high compression alone during the impacts

• Which risk increases when Roman aqueduct arches experience uneven foundation settling?
• Which risk increases when an ancient rope bridge's tension reaches material yield strength?
• Within Mughal garden design, which mechanism maintains consistent water pressure between terraces?
• Which mechanical consequence resulted from water freezing inside early cast iron water pipes during winter months?
• Which mathematical challenge arises when medieval Islamic engineers attempted precise qibla determination through spherical trigonometry?
• Burning naphtha propelled at ships yields which outcome via siphon?