Descriptors | Drainage, Buildings, Foul-sewage drainage, Waste-water drainage, Surface-water drainage, Ground-water drainage, Underground, Drainpipes, Water supply and waste systems (buildings), Sewers, Sewage engineering, Legislation, Construction materials, Pipes, Flexible pipes, Pipe couplings, Size, Chemical-resistance tests, Construction systems parts, Design, Structural design, Layout, Flow rates, Construction operations, Manholes, Dimensions, Excavating, Ground movement, Inspection, Performance testing, Hydraulic tests, Pressure testing, Maintenance, Compaction tests, Leak tests, Pipe laying, Water-absorption tests |