three-centered arch

Thân thiện

A builder carefully sets the keystone of a three-centered arch.

Definition

Noun: A three-centered arch is a specific type of architectural arch. It is a round arch whose inner curve (the intrados) is not drawn from a single center point but is instead constructed using three separate center points. This creates a shape that is flatter than a true semicircle but more rounded than a standard elliptical arch, often resembling a shallow, elongated curve.

Usage

The term is used in architecture, construction, and historical description to specify the geometric construction and visual profile of an archway, door, or window. * The bridge's design featured a broad three-centered arch to allow for greater headroom. * In Georgian architecture, three-centered arches were commonly used above elegant fanlight windows.

Advanced Usage

• The three-centered arch is sometimes called a basket-handle arch due to its resemblance to the curved handle of a basket. This is a descriptive synonym rather than a technical variant.
• This arch type is often analyzed in contrast to a two-centered arch (a standard Gothic or pointed arch) and a four-centered arch (a Tudor arch).

Variants and Related Words

• Basket-handle arch: A common alternative name for a three-centered arch.
• Elliptical arch: A different type of arch whose curve is a true ellipse, often compared to the three-centered arch.
• Segmental arch: A simpler arch whose curve is a segment of a circle, drawn from a single center.

Synonyms

• Basket-handle arch

Antonyms

• Two-centered arch (pointed arch)
• Semicircular arch (one-centered arch)

Học thuật

Noun

1. a round arch whose inner curve is drawn with circles having three centers

Từ đồng nghĩa

• basket-handle arch