The document discusses requirements and recommendations for the size and layout of an outpatient department (OPD) in a hospital. It provides guidance on the ideal sizes for consultation rooms, waiting areas, diagnostic and treatment rooms, as well as recommendations for furniture and equipment placement. Specific sizes are recommended for areas like x-ray, sonography, CT scan, and rooms for procedures like endoscopy. Departments like radiology, radiotherapy, internal medicine that are part of the OPD are also covered.