also: たいきん
noun
hoop; tie hoop; lateral tie
Architectural term for a horizontal reinforcing band or tie, often used in traditional Japanese construction to bind structural elements.
この古い建物では、柱と柱の間に帯筋が使われている。
In this old building, tie hoops are used between the pillars.
筋交い is a diagonal brace, while 帯筋 is a horizontal tie or hoop.
Compound of 帯 (obi, 'belt, band') and 筋 (kin, 'line, stripe'), referring to a band-like structural element. The exact historical derivation is uncertain.