large-scale partial destruction; partial building damage (50-70% of surface area)
Legal term used in disaster assessment and insurance contexts. Refers to a specific degree of structural damage where 50-70% of the building's surface area is affected.
My house was assessed as having large-scale partial destruction after the earthquake.
大規模半壊の認定を受けると、支援金が支給される。
If you receive a certification of large-scale partial destruction, you will be provided with financial aid.
Compound of 大規模 (large-scale) and 半壊 (partial destruction). A technical term likely coined for legal and disaster assessment purposes.