Massachusetts Plumbers Journeyman Exam Study Guide with Complete Solutions

Massachusetts Plumbers Journeyman Exam Study Guide with Complete Solutions Existing Work - Correct Answer A plumbing system or any part thereof installed prior to March 11, 2005. Soil Pipe - Correct Answer Any pipe that conveys the discharge of toilets, urinals or fixtures having similar functions to the building drain or building sewer. The discharge may be conveyed with or without the discharge from other fixtures Water Distribution Pipe - Correct Answer A pipe within the building or on the premises that conveys water from the water service pipe to the point of usage Barometric Loop. - Correct Answer A vertical loop of pipe, rising to a height sufficient to prevent back-siphonage from occurring in the potable water supply pipe. (Approximately 35 feet, depending on the weight of the atmosphere.) Developed Length - Correct Answer The length of a pipeline as measured along the center line of the pipe or fittings. Roughing-in. - Correct Answer The installation of all parts of the plumbing system that can be completed prior to the installation of fixtures. This includes drainage piping, water supply piping, vent piping, the necessary fixture supports, and any fixtures that are built into the building. Trap Seal - Correct Answer The vertical distance between the crown weir and the top of the dip of the trap. Air Gap (Drainage System). - Correct Answer The unobstructed vertical distance through the free atmosphere between the outlet of a waste pipe and the flood level rim of the receptacle into which the waste discharges. Air