In which sewer joint, bituminous compounds are added?
(a) Collar joint
(b) Flexible joint
(c) Mechanical joint
(d) Simplex joint
I had been asked this question in exam.
This question is from Joints and Shapes of Sewers and Cleaning, Maintenance and Ventilation of Sewer topic in chapter Construction of Sewers, Sewer Appurtenances and Sewage Pumping of Environmental Engineering