external framing; shell construction
Refers to the basic structural frame of a building, especially the exterior walls and roof, before interior finishing. Used in architecture and construction contexts.
With this construction method, it is important to improve airtightness at the external framing stage.
Compound of 素 (す, 'bare, unadorned') and 建て (たて, 'building, construction'), literally 'bare construction'. The exact historical derivation is uncertain, but it is a technical term in Japanese architecture.