Which outcome threatens Inca terrace wall stability following intense rainfall?

💡 Explanation

Hydrostatic pressure builds when water saturates the soil behind terrace walls, because pore water pressure increases. Consequently, retaining walls may bulge or collapse; therefore, high pore pressure causes instability, rather than capillarity or thermal effects which are less immediate.

• Which outcome occurs on Mughal 'pietra dura' when seasonal humidity cycles cause soluble salts to precipitate?
• Which structural weakness frequently emerged in Roman concrete fortifications during the later empire?
• Which outcome arises because limestone formations saturate during excessive Roman concrete curing?
• Which irrigation-related consequence arose when Tenochtitlan's *chinampas* exceeded optimal density?
• Which risk increased during the construction and operational maintenance of complex Mughal garden systems because of extensive pietra dura inlay application?
• Which outcome immediately follows when compressive stress overcomes the shear strength within vertically stacked Inca stone masonry?