ClipArt ETC
"A conduit or canal constructed, especially in a town or city, to carry off superfluous, water, soil, and other matters; a public drain. A, B, C, D, E forms used in London, Paris, and other European cities; F, G, H, I, J, K, L, special forms used in New York and other American cities. F shows a method of repairing with tiles at the bottom of an oval sewer. G, tile-bottomed sewer. H, barrel sewer...of wood bound with iron. I, a form used for large sewers. J, section of pipe sewer. K, half section of sewer having section similar to B, but also provided with a spandrel. L, the aqueduct form, used for large sewers only, it rests on a bed of concrete." —Whitney, 1889

Collection of Sewer Cross-Sections

"A conduit or canal constructed, especially in a town or city, to carry off superfluous, water, soil,…

A, brickwork; B, tufa ashlar; R, opus reticulatum; I, opus incertum.

Roman Wall Masonry

A, brickwork; B, tufa ashlar; R, opus reticulatum; I, opus incertum.

A species of masonry very common among the ancients, in which the stones are square and laid lozenge-wise, resembling the meshes of a net, and producing quite an ornamental appearance. It is the opus reticulate of the Romans.

Reticulated Work

A species of masonry very common among the ancients, in which the stones are square and laid lozenge-wise,…