Tub drain clogged and causing bathtub to overflow. Original plan was to jackhammer concrete floor, expose tub drain and rework. Upon further inspection and questioning tech found out that no one had ever snaked the tub drain in an attempt to relieve the clog. Snaked tub drain and relieved clog at about 15 feet in the line. Pulled cable back, let tub drain out and then ran tub/shower faucet to test. Tub/shower draining properly after clog was worked through with cable. Had to reset toilet and wall hung sunk and test. Toilet filling/flushing properly and sink also draining properly