Cleaned section of 4” cast from clean out in basement to elbow under basement floor at bottom of stack, also cleaned about 2’ towards catch basin. Installed 2’x4” patch liner down stack starting at top of elbow ending at bottom of tee from catch basin, installed a 4”x4”x4” tee liner overlapping patch liner dropping down stack to top of clean out and 1’ upstream of tee towards catch basin.