Which risk was present when a Roman siege tower approached a city wall constructed with lime mortar?

💡 Explanation

When Roman siege towers approached city walls, defenders often used incendiary projectiles because lime mortar, weakened by high heat, can lose its binding properties during crystalline phase changes. Therefore mortar degradation is risked, rather than instability, collapse or undermining, which involve different mechanisms during siege warfare.

• Which consequence resulted from inadequate terrace wall drainage in ancient hillside agriculture?
• Which mechanical consequence results when a 19th-century steam engine's cylinder lubrication system fails?
• Which risk increased on 18th-century wooden warships primarily due to the galvanic corrosion mechanism?
• Which risk increases when copper sheathing used on wooden ships experiences prolonged immersion in seawater containing dissolved sulfides?
• Which risk most significantly increased during transatlantic voyages conducted by wooden sailing ships due to galvanic corrosion?
• Which risk increased when 18th-century wooden warships remained at sea for extended deployments?