Are you a plumber? Is SDR35 and SCH40 compatible? If so, what is the proper connection?

your problem is there was no grillage {gravel} under your piping when the ground settled it screwed things up the plumbing company that did the work should be held reponsible through your builder it should have never past a plumbing inspection as for sdr 35 and sch 40 they are conpatable but they should of used a fernco adaptor to connect them together not a glued coupling