Detailed Work Activity Seal gaps or cracks to prevent leakage or moisture intrusion. Install prefabricated or manufactured structures. Move large objects using heavy equipment. Test mechanical equipment to ensure proper functioning. Inspect systems to determine if they are operating properly. Connect hoses to equipment or piping. Remove parts or components from equipment. Repair structural components. Confer with customers or users to assess problems. Estimate costs for labor or materials. Plan work procedures. Read work orders or descriptions of problems to determine repairs or modifications needed. "Record information about parts, materials or repair procedures." Install home appliances. Reassemble equipment after repair. Repair pipes to stop leaking. Connect electrical components or equipment. Control power supply connections. Repair electrical circuits or wiring. Cut materials according to specifications or needs. Refinish wood or metal surfaces.