Are chimneys considered structurally invulnerable?

Chimneys are not considered structurally invulnerable because they can be susceptible to various forms of damage due to weathering, mechanical stress, and other environmental factors. For instance, they may be affected by high winds, freeze-thaw cycles, or even earthquakes, which can compromise their structural integrity. Additionally, the materials used in chimney construction also play a significant role in their durability; for instance, masonry chimneys can deteriorate over time if not properly maintained.

Thus, while they are designed to withstand certain conditions, they are not immune to degradation or structural failures. Regular maintenance and inspections are crucial to ensure their safety and functionality, but this does not imply that they are invulnerable in any circumstance.