Walls should be constructed to resist vandalism and facilitate ease of maintenance. Exterior and interior walls within inmate housing and activity areas shall be constructed as follows:

1. (1) Exterior walls:

   1. (A) a minimum 8 inch concrete block vertically reinforced by #3 bars 8 inches on center and all cells filled with 2,500 psi grout; or
   2. (B) a minimum of 4 inch thick concrete plank reinforced with #4 bars 8 inches on center each way; or
   3. (C) a minimum 3/16 inch thick steel plate.

2. (2) Interior walls:

   1. (A) a minimum 6 inch concrete block vertically reinforced by #3 bars 8 inches on center and all cells filled with 2,500 psi grout; or
   2. (B) a minimum 4 inch thick concrete plank reinforced with #4 bars 8 inches on center each way; or
   3. (C) a minimum 3/16 inch thick steel plate. Innovative design concepts are encouraged and comparable materials and methods approved by the Commission may be utilized for exterior and interior wall construction.

Source Note:The provisions of this §259.748 adopted to be effective September 2, 1997, 22 TexReg 8405.