UNIT 20: RENOVATION AND REPAIR
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INTRODUCTION
Not all construction is new. Many buildings need renovation. Renovation means repairing or improving an old building. It can be as simple as painting a room or as complex as replacing the whole roof.
STORY 1: Inspecting an Old Building
Before renovating, engineers inspect the building. They look for cracks in walls. They check if the floors are level. They test for moisture and mold. They check the electrical system and plumbing. The insp