I've been asked to move a bath in a wet room, approx 2 metre away.The floor is solid concrete with hydro flooring fitted.The bath is an hydraulic bath fitted to manifold with 1.5 waste directly into 4" drain elbow. would i be ok to dig up concrete and run 1.5 solvent waste into existing drain with correct reducer (4" to 1.5") with adequate fall and sleeving .
