foundation work; foundation construction
Refers to the construction work for the foundation of a building or structure, including excavation, footing, and base preparation.
Foundation work for the new building has begun.
Rebar and concrete are used in foundation construction.
基礎 means 'foundation' or 'basis' in a general sense, while 基礎工事 specifically refers to the construction work of a foundation.
工事 means 'construction work' in general; 基礎工事 narrows it to foundation-related construction.
Compound of 基礎 (foundation) and 工事 (construction work).