INDUCTIVE LOADING FOR TELEPHONE FACILITIES 



731 



1949) revolves about two requirements: (1) the cases shall be capable of 

 being installed in manholes having 27-inch openings, and (2) the vertical 



Fig. 28B— Other end of vault in Fig. 28A. 



dimensions shall be as short as possible while meeting requirement (1). The 

 primary purpose of these changes is to reduce the cost of manhole construc- 

 tion in new conduits. 

 The submarine cable loading cases previously mentioned are cylindrical 



