A grab bar 24 inches 610 mm long minimum shall be installed on the control end wall at the front edge of the bathtub.
Ada bathroom grab bars layout.
Both types of bars have to be between 33 and 36 inches above the finished floor.
Each grab bar shall be installed 15 inches 380 mm maximum from the head end wall and 12 inches 305 mm maximum from the control end wall.
The rear grab bar can be split or shifted to the open side to accommodate the required location of the flush control valves.
Rear wall grab bars shall be 36 915 mm long and mounted so 24 610 mm are to the transfer side of the toilet and the other 12 305 mm to the wall side.
Bathtubs without permanent seats.
The bar must be 1 1 4 to 1 1 2 inches in diameter.
Side wall grab bars should be at least 42 inches in length with one end 12 inches or less away from the wall behind the toilet and one end at least 54 inches away from that wall.
Rear wall grab bars must be at least 36 inches long.