Water supply and drainage construction drawing of a villa, including a plan of outdoor pipe network, marked with the comprehensive layout plan of domestic water supply, fire hydrant, sprinkler, hot water, air conditioning, drinking water, rainwater and sewage pipelines. It also includes design description and legend, basement plan, first floor water supply and drainage and fire protection plan, second and third floor plan, automatic sprinkler system diagram, fire hydrant system diagram, drainage system diagram, toilet