37 Tex. Admin. Code § 259.743
All cells and day rooms shall be not less than 8 feet from finished floor to ceiling and 5 feet 6 inches from wall to wall. Cells containing over/under bunk units shall be measured from center line of units to wall. Corridors shall be not less than 4 feet wide.
Source Note:The provisions of this §259.743 adopted to be effective April 4, 1999, 24 TexReg 2355.