It is difficultto distinguish the characteristicsofa building which categorize it astall. Afterall, theoutwardappearanceoftallness is a relativematter.Ina typicalsingle-storyneighborhood, athree-story buildingmay appear tall.A 50-story buildinginacitymay be called a high-rise, but the citizens of a small town may point proudly to their skyscraper of six stories. In large cities, suchas Chicago and Manhattan, and now in United Arab Republic, with a vast number of tall buildings, a structure must piercetheskyaround 100–120 stories if it is to appear tall in comparison with itsimmediate neighbors A tall building cannot be definedincertainterms related to height or number of floors. TallStructure: Abuildingofheightgreaterthan50m.butlessthanorequalto250m (Clause3.14,pg.3, IS 16700)Key word : Tall structure,Load , Bending moment