also: かわいた
noun
stringer; slanted staircase beam
Architectural term for the inclined beam supporting the steps of a staircase; compare 側桁.
See also: 側桁
階段の側板は、踏み板を支える重要な部材です。
The staircase stringer is an important member that supports the treads.
noun
side plate; side panel; side sheet
General term for a plate, panel, or sheet forming the side of a structure or piece of equipment.
この機械の側板は簡単に取り外せます。
The side panel of this machine can be easily removed.
側桁 is another term for a staircase stringer, often used interchangeably with 側板 in architectural contexts.
Compound of 側 (side) and 板 (board, plate). The reading がわいた uses the voiced form of 側 (がわ) common in compounds.