To begin at the top of the pay scale with the highest ranking law enforcement officer in a city police department other than the commissioner, the police chief is paid anywhere from $90,000 to $114,000 in base salary.
A toilet's drain must be run at 1/4 per foot minimum grade when horizontal. A toilet cannot be installed upstream of any wet vented fixture. The maximum vertical fall of the drain is 1 meter(39 inches) and the maximum horizontal run is 3 meters before it connects to a vent. All downstream drainage after the connection of a third toilet on the same horizontal pipe must be 4 diameter or larger.
A basic rule of thumb is that a 4 horizontal drain line with a minimum of 1/4 per foot pitch can handle the same volume as a 3 downspout thus combining two 4 pipes into one pipe would require a 6 pipe. (6x6)/(4x4) = 36/16 = 2.25. Thus a 6 pipe has the equivalent capacity of two 4 pipes or two 3 downspouts.