This document discusses Le Corbusier's theories of city planning, including centralization, zoning, and use of geometry/grids. It analyzes how these theories apply to the SS15 area of Subang Jaya, Selangor, Malaysia. SS15 demonstrates centralization through Subang Square, a tall skyscraper functioning as the area's commercial/financial center. SS15 also shows clear zoning between residential, business, education, and other areas. The planning of SS15 follows Le Corbusier's emphasis on geometry and grids. However, it could improve landscaping/greenery and connectivity between zones.