| Descriptors | Pipes, Pipe fittings, Sewers, Fluid equipment, Cylindrical shape, Culverts, Marking, Precast concrete, Concretes, Reinforced concrete, Cements, Aggregates, Surface defects, Surface texture, Temperature, Reinforcing steels, Size, Pipe collars, Type testing, Water-absorption tests, Hydraulic tests, Pressure testing, Crushing tests, Testing conditions, Maximum load, Proof loading, Deflection tests, Shear testing, Inspection, Test equipment, Pipe couplings, Flexibility, Dimensional tolerances, Form tolerances, Dimensional measurement, Mechanical testing, Water absorption, Impurities, Drainpipes, Surface-water drainage, Drainage, Jacking pipes |