Which consequence resulted when Roman siege engines repeatedly targeted a stone fortification wall at same point?

💡 Explanation

When siege engines pound a wall repeatedly at same point, stress concentration occurs because material accumulates strain energy beyond its elastic limit, leading to progressive fracturing. Therefore cracking is most likely, rather than uniform disintegration(inconsistent impact), ablation(requires specific material), or vaporization(beyond gunpowder capability then).

• Which mechanism limits the maximum length of unsupported stone lintels in Mycenaean architecture?
• Which mechanism causes the collapse of poorly constructed dry stone walls over extended time periods?
• Which risk increased during 18th century construction of larger wooden warships exceeding material limits?
• Which risk increased when ancient Mesopotamian ziggurats used bronze ground rods for lightning protection?
• Which outcome arises if humidity causes index mirror corrosion in an 18th-century sextant during celestial navigation?
• Which agricultural technique deployed by pre-Columbian civilisations prevented soil erosion on steep Andean slopes?