Clearance in front of bathtubs shall extend the length of the bathtub and shall be 760 mm (30″) wide minimum. A lavatory complying with 606 shall be permitted at the control end of the clearance. Where a permanent seat is provided at the head end of the bathtub, the clearance shall extend 305 mm (12″) minimum beyond the wall at the head end of the bathtub.
607.3 Bathtub Seats.
A permanent seat at the head end of the bathtub or a removable in-tub seat shall be provided. Seats shall comply with 610.
607.7 Bathtub Enclosures.
Enclosures for bathtubs shall not obstruct controls, faucets, shower and spray units or obstruct transfer from wheelchairs onto bathtub seats or into bathtubs. Enclosures on bathtubs shall not have tracks installed on the rim of the open face of the bathtub.