Mnemonic
The tallest tree in the east was felled at dawn, its trunk so perfectly straight that the master carpenter declared it the only timber worthy of becoming the ridgepole. As the sun rose in the east, the beam was hoisted to the roof's peak—crowning the building like a spine crowns a body.
Additional thoughts
Picture a magnificent tree silhouetted against an eastern sunrise, then imagine that same trunk lifted high to become the topmost beam of a roof. East + sunrise = peak/top, reinforcing the ridgepole's position at the very top.Quick recall
A straight tree from the east is hoisted to become the ridgepole at the roof's peak.Details
The keyword for 棟 is ridgepole. A ridgepole is the horizontal beam running along the peak of a roof, forming the highest structural element that supports the rafters on either side. By extension, this kanji is used to count buildings, since the ridgepole is the defining structural feature that crowns a completed structure. It can also refer more broadly to the main or central part of something, reflecting the ridgepole's role as the backbone of a roof.
- On'yomi
- とう
- Kun'yomi
- むね、むな-