MATERIALS FOR SEWERS
90. Materials. 91. Vitrified Clay Pipe. 92. Cement and Concrete
Pipe. 93. Proportioning of Concrete. 94. Waterproofing of
Concrete. 95. Mixing and Placing Concrete. 96. Sewer Brick.
97. Vitrified Clay Sewer Block. 98. Cast Iron, Steel, and
Wood. 164–193