This document discusses urban design principles and controls. It begins by defining urban design and its role in shaping public spaces and urban patterns. It then covers various design principles like scale, enclosure, grain, texture and morphology. It discusses the importance of factors like building height, ground coverage, and floor area ratio that are regulated through urban controls. The document uses examples from Chandigarh to explain how zoning and architectural controls were used to shape its development according to Le Corbusier's plan. In summary, the document outlines key urban design concepts and analyzes how regulations and controls were applied in Chandigarh to achieve its planned urban form.