Plumbing drains shall be stubbed out of the building on the side of the building closest to the city main sewer. All changes in direction shall be made with a wye or a one-eighth bend or by other methods approved by the superintendent of central inspection. If the connection with the wye in the city sewer is to be made with a bend, such bend shall be a one-eighth bend only. This clean out is in addition to the required cleanout for each one hundred feet or portion thereof. No part of any building sewer or drain shall be less than one foot below the surface of the ground, except replacement of existing building sewers.
Lubricant sealer is to be used as recommended by the manufacturer.
Joints shall be firmly packed with picked oakum or hemp and secured with molten lead with at least twelve ounces of fine soft caulking lead being used for each inch of the pipe diameter for each joint, or the joints when properly applied to suitable cast-iron bell and spigot pipe and fittings shall be made with an approved neoprene gasket, which is compressed as the spigot is inserted into the bell of the pipe. All ditches must be bottomed to a uniform grade before sewer pipe is laid. Bell holes shall be carefully hand-dug so that no part of the load is supported by the bells. The full load should rest on the barrel of the pipe. Bell holes shall be no larger than necessary.