Which term describes major repair work that requires engineering remedial measures?

• A. Residual Camber
• B. Redundancy
• C. Resurfacing
• D. Rehabilitation

Answer: (D)

Rehabilitation describes substantial repair and improvement of a structure where engineering remedial measures are required to restore strength and serviceability. It covers actions like structural repairs, strengthening, replacement of critical components, or retrofits guided by analysis to address deficiencies found in inspection. It differs from resurfacing, which is only a surface treatment; from residual camber, which is a pre-existing curvature of a member; and from redundancy, which concerns having alternate load paths in the design rather than repair actions. Thus, rehabilitation is the term that fits major repair work needing engineering remedial measures.