The advantages claimed for setting the drain pipes in, and upon cement, are durability and strength; and if a pipe of six inches diameter be used, there is but little liability of its becoming choked or requiring repair for many years. Drain pipes laid on soft subsoil materials frequently break asunder from the subsidence of such a matrix, or from heavy weights falling suddenly upon them, from above, and our daily sanitary work furnishes abundant evidence of the danger to health arising from the fracture of drain pipes, where originally placed upon improper ground, and especially when under such circumstances they are subjected to violent blows.
In Edinburgh the Slaughter-houses are “laid with a thick well-dressed pavement, resting on a stratum of concrete twelve inches thick.”
Bye-law IV.
That each Slaughter-house be provided with adequate cisternage and water supply, or, where practicable, with a constant supply of water, and such arrangement of pipes as will enable the pavement and the walls to the height of 7 feet 6 inches to be conveniently and quickly washed.
Objection.
The Butchers urge that four feet is sufficiently high for the washing of the walls.
Reply.
The necessity for this alteration will be dealt with under remarks upon [Bye-law No. 6].
Bye-law V.
That each Slaughter-house be separated from any adjoining Slaughter-house in a different occupation by a brick wall, of at least nine inches in thickness, extending from the ground to the roof, so as effectually to shut off all atmospheric communication between it and the adjacent Slaughter-house.