noun
Refers to a physical framework for holding or supporting something, such as a shelf, bracket, or mounting base. Often used in technical or compound contexts.
この架は重い機材を支えるために設計された。
This rack is designed to support heavy equipment.
配管用の架を壁に取り付ける。
Attach a pipe mount to the wall.
棚 is a general shelf or rack, while 架 often implies a structural frame or mounting bracket, and is more common in technical or compound usage.
The kanji 架 originally depicts a wooden frame or structure. The reading か is the on'yomi, commonly used in compounds. The exact historical derivation is uncertain.