Which architectural feature acts as a primary external support transferring thrust from arches and vaults to the ground, often associated with flying vaults and arches?

Which architectural feature acts as a primary external support transferring thrust from arches and vaults to the ground, often associated with flying vaults and arches?

• A. Flying buttresses
• B. Pinnacle
• C. Ribbed vaulting
• D. Clerestory

Answer: (A)

External supports that transfer thrust from arches and vaults to the ground are flying buttresses. In Gothic buildings, the heavy outward push from tall arches and ribbed vaults would push the walls outward. To counteract this without thick walls, builders placed external supports that reach from the wall to a separate vertical pier, connected by an arched channel. This setup channels the thrust outward and downward away from the wall and into the ground, allowing the wall to be thinner and to accommodate large windows filled with light. The result is the characteristic flying buttress, which often appears to “fly” from the wall to its external support. By contrast, a pinnacle is mainly decorative, ribbed vaulting provides the interior structural framework, and clerestory refers to the upper, windowed portion of a wall.

External supports that transfer thrust from arches and vaults to the ground are flying buttresses. In Gothic buildings, the heavy outward push from tall arches and ribbed vaults would push the walls outward. To counteract this without thick walls, builders placed external supports that reach from the wall to a separate vertical pier, connected by an arched channel. This setup channels the thrust outward and downward away from the wall and into the ground, allowing the wall to be thinner and to accommodate large windows filled with light. The result is the characteristic flying buttress, which often appears to “fly” from the wall to its external support. By contrast, a pinnacle is mainly decorative, ribbed vaulting provides the interior structural framework, and clerestory refers to the upper, windowed portion of a wall.