Ключевые слова:
Water supply and waste systems (buildings), Pipework systems, Pipelines, Pipes, Sewers, Underground, Drainage, Manholes, Embankments, Trenches, Design, Construction materials, Excavations, Dimensions, Dimensional tolerances, Width, Pipe supports, Installation, Joints, Leak tests, Visual inspection (testing), Pressure testing, Service pressure, Particle size distribution, Particulate materials, Sand, Aggregates