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Brazil will soon host the two major sports events throughout the world: the Football World Cup and the Olympic Games. Therefore several ventures are in planning and some are already in implementation. The first phase of these projects is the deployment, where several activities of civil construction are developed. The activities in general are developed in consolidated urban areas, treating very often modification of an urbane important installation. Thus, in this initial phase are executed activities of demolition, cleaning, preparing the land, foundation and piling, which are considered noisy for people, causing great discomfort to the existing community around the construction site. The objective of this paper is to present some information about the noise generated by the activities of civil construction and how to manage the environmental impact sound generated by the machinery and equipment used in these activities.