Question

what is the difference between a ribbed vault and a groin vault?
a. groin vaults are built on the sides, while rib vaults are on the ceiling.
b. groin vaults have more support than rib vaults.
c. rib vaults are groin vaults with extra stone ribbing.

please select the best answer from the choices provided

○ a
○ b
○ c

Explanation:

To determine the difference between ribbed and groin vaults:

• Option A is incorrect: Both groin and ribbed vaults are ceiling - related architectural elements, not differentiated by side vs. ceiling placement.
• Option B is incorrect: Ribbed vaults (with stone ribbing) actually provide more support than basic groin vaults.
• Option C is correct: A ribbed vault is essentially a groin vault that has additional stone ribbing (for structural reinforcement and decorative purposes).

Answer:

C. Rib vaults are groin vaults with extra stone ribbing.