![]() ![]() The study also includes the precautionary measures regarding machinery or equipments, scaffolding, public safety and worker safety. The various steps involved before the demolition process includes surveying of the demolition site, removal of hazardous material and safety precautionary measures. Equipments used for demolition work are hammers, rammers, excavators, bulldozers, wrecking ball and the explosives used are dynamites and detonators etc which is generally preferred for tall buildings. The building is brought down either manually or mechanically depending upon the method used for demolition of buildings. Demolition is the tearing-down of buildings which involves taking a building apart while preserving the valuable elements for re-use. Therefore it becomes essential to demolish the building. The existence of the structure after the service life period is very dangerous to its occupants and surrounding buildings. We know that every structure is designed for a specific life period, generally 100 years. Demolition is the deliberate destruction of structures and materials by means of explosives, mechanical devices, fire, chemical agent, etc. The important methods practiced in this field are mentioned. The demolition technology that is practiced to demolish the concrete structures in a controlled way especially in Indian conditions. The application of method for demolition depends upon actual site condition and available space. Before execution of demolition work, the careful study of site condition, the type of structure, structural member, demolition range, rural or urban area and frequency. The demolition method also varies with the time available for demolition and need of site clearance for the new structure. Today various kinds of demolition methods are available, but the method of implementation for demolition work varies with the site condition, safety and cost. ![]() Any kind of demolition work needs labor forces for executing the work. In developed countries demolition is very essential for development of new structures for various residential and industrial purposes. ![]() During this life, structures often meet with some situations like disasters, changing functions, city reconstruction, or higher residence demand due to population, all these lead to demolition or reconstruction of existing structures. The life cycle of concrete structures is usually 40 to 90 years. ![]()
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