Water supply and drainage drawings for a family home, including plans for level 1, 2 and the roof. Full layouts for uPVC drainage & PPR water supply pipes with all standard connections. I’ve included the principle diagrams for both systems plus installation details for WCs, floor drains, & septic pits. Follows TCVN-4513-1988 & TCVN-4471-1987 design standards for internal plumbing. Contains symbols for check valves, solar water heaters, pumps, and pipe diameters with slopes at i=2% to 3%. Technical specs cover installation heights relative to finished floor levels and connection points to the local municipal network. Basically a complete MEP plumbing package with legends, material schedules, and more. Hồ sơ thiết kế bản vẽ thi công phần cấp thoát nước.