This document is a design drawing of a mezzanine warehouse building and water supply and drainage (including water supply and drainage calculation sheet). The drawings include pipe line layout plan of water pump house, foundation layout plan of water pump house, water pump system diagram, general water supply and drainage plan, water supply and drainage plan of warehouse bottom floor, water supply and drainage plan of warehouse roof, water supply and drainage details of toilet, fire hydrant system diagram, foundation layout plan of water pump house The water pump room pipeline layout plan, architectural drawing, toilet and staircase drawing can be used for reference.