General Order 128
 Section IV
 Requirements for Communication Systems
 
42.4 
   Size and Shape
     
        
Manholes shall be constructed to provide sufficient working space 
 so that the cables and equipment therein can be properly and safely installed, 
 supported, operated and maintained.
     
   Manholes shall not be constructed with smaller dimensions than those required 
 by  Public Utilities Code, Sec.
8051
 (Also see
Appendix B, Fig. 9, and Appendix D.) 
     
   Handholes shall be of sufficient size to house safely the required cables, 
 splices, connectors and associated apparatus. Cables shall be arranged so 
 that they can be safely installed and maintained.