英语翻译These are the as-built surveys and they are used to chec

These are the as-built surveys and they are used to check the contractor `s work and show locations of structures and their components ( water line ,sewer ,etc .) , which will be needed for future maintenance , changes , and new construction .
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这是对已竣工建筑的堪测,用来检验承包商的工作（质量）,标示建筑位置及其构建（水管线,排污等）以便为将来进行维护、修改及新建设所用.
（中式滴 ^_^)