Which risk increases when the mortar within a dry stone wall erodes?

💡 Explanation

An absence of mortar in dry stone walls increases lateral thrust, due to reduced interlocking. This occurs when erosion compromises friction; therefore, a wall is likely to bulge outward rather than experience shearing, because tensile strength relies on cohesive bind.

• Which outcome resulted from thermal expansion, altering historical astronomical measurements using brass astrolabes?
• Which outcome accelerated soil depletion on Andean agricultural terraces following the Spanish conquest?
• Which limitation affected astrolabe accuracy when measuring star altitudes near the horizon?
• Which consequence results when water refreezes within porous building stone?
• Which risk increases when ropes supporting an ancıent Incan suspension bridge experience excessive moisture?
• Which consequence arises from polishing concave metal mirrors without accounting for spherical aberration during the Islamic Golden Age?