University of Virginia Library

Sec. 491(18). Terra cotta pipe.

The terra cotta pipe from where it joins cast iron pipe to public
sewer at property line, must be of best quality number two or
better salt glazed and of following sizes:

   
1 to 4 Water Closets  4″ 
5 to 16 Water Closets  6″ 

Terra cotta pipes to be laid with uniform grade, joints to be
connected with a mixture of two parts clean sharp sand and one
part of best portland cement with oakum gasket or approved
sewer joint material and inside of pipes to be swabbed to remove
any mortar which might work through the joints.