resembles a fan! Constructed in concave ribs of equal length, which spring from a central point. The ribs meet, or nearly meet at the apex or crown of the vault.

1. A rib vault in which the ribs radiate from the springing point like a fan. 2. Style of vaulting typical of England in the 16th century, in which the ribs are of equal length and form a fan shape.

Late form of tierceron vault in which the segments are rounded to form a series of inverted cone shapes

a type of roof used in church architecture