Which structural system primarily enabled Gothic interior walls to be taller with large windows?

Which structural system primarily enabled Gothic interior walls to be taller with large windows?

• A. Flying buttresses
• B. Barrel vaults
• C. Post-and-lintel
• D. Central dome

Answer: (A)

The main idea is how Gothic walls achieve great height and abundant light by managing the loads from vaulted ceilings with external supports. In Gothic buildings, ribbed vaults and pointed arches channel the roof’s thrust outward rather than straight down. Flying buttresses act as external braces, transferring that lateral force to tall exterior supports so the interior wall surfaces can be relieved of heavy, load-bearing weight. This allows the walls to rise higher and become thinner, making room for large openings filled with glass and minimizing solid masonry. In contrast, other systems like barrel vaults push weight straight into thick walls, restricting window size; post-and-lintel relies on heavy vertical posts and horizontal beams with limited span; and a central dome concentrates loads differently and doesn’t provide the same exterior support mechanism for tall, glass-filled walls.

The main idea is how Gothic walls achieve great height and abundant light by managing the loads from vaulted ceilings with external supports. In Gothic buildings, ribbed vaults and pointed arches channel the roof’s thrust outward rather than straight down. Flying buttresses act as external braces, transferring that lateral force to tall exterior supports so the interior wall surfaces can be relieved of heavy, load-bearing weight. This allows the walls to rise higher and become thinner, making room for large openings filled with glass and minimizing solid masonry. In contrast, other systems like barrel vaults push weight straight into thick walls, restricting window size; post-and-lintel relies on heavy vertical posts and horizontal beams with limited span; and a central dome concentrates loads differently and doesn’t provide the same exterior support mechanism for tall, glass-filled walls.