Facade inspections are categorized by two levels: general, and detailed inspection. A combination of general and detailed inspection is required. Selection of inspection level and frequency is dependent upon the facade age, materials, construction, and service history. Detailed inspection is conducted on areas with greatest exposure and risk to persons or property. General inspection is visual observation of facade components from distances equal to or greater than 6 ft. The qualified inspector methodically scans facades areas and check for out-of-plane displacement of facade elements while scanning the facade horizontally and vertically. Based upon findings during the general inspection, the review of project documents, and service history, RAS choose's the representative areas to receive detailed inspection. Detailed inspection is visual observation and tactile evaluation of facade components, including probing and NDT to observe concealed condition of wall construction.