Distinctive features in the preparation of calendar plans for the installation work of internal sanitary-technical systems in large-panel large-block residential buildings are the following points: a large degree of factory readiness of parts and components; The direct dependence of the rate of installation of sanitary work on public work, since some sanitary elements of systems are part of the general-religious elements of the building; the need for strict observance of the established procedure for the construction of the main structures of buildings.