Principals
Where are the basic plumbing principals found?
248 CMR 10.02: Basic Principles.
Define plumbing.
The system of pipes, fixtures, devices, and practices used to safely supply water, remove wastewater, control gases and pressure, and prevent contamination.
What type of PEX can not be expanded?
PEX B
Which component refills a toilet tank?
Fill valve.
Is water supply alone a complete plumbing system?
No. Safe plumbing must also remove waste, control gases and pressure, and prevent contamination.
What principal tells you what the required plumbing fixtures are?
Principle 6: Required Plumbing Fixtures.
Define Hot Water.
Water at a temperature of at least 120EF.
How do you connect CPVC to its fitings?
CPVC Glue
Name one modern fixture feature that reduces water use.
1.28 GPF toilet, dual flush control, aerator, efficient showerhead, sensor control, or metered control.
Did Rome have complete modern sanitation?
No. Access was unequal, treatment was limited, clean water and sewage were not always fully separated, and wastewater was not treated to modern standards.
What principal is this from: The piping and other components of the plumbing system must be manufactured of durable material, free from defective workmanship, and designed and constructed to provide satisfactory service for its reasonable expected life.
Principle 8: Durable Materials and Good Workmanship
Define PVC.
Polyvinyl-Chloride.
How many threads should be on 1/2" steel pipe?
8-10 useable threads
What blocks sewer gas at a properly trapped fixture?
The water filled trap seal.
Where did Roman aqueduct energy come from?
Gravity, because the source was higher than the destination.
What does Principle 12 in reference to?
Plumbing Systems Must be Tested. The plumbing system must be subjected to such tests as mandated by 248 CMR 10.00 to effectively disclose all leaks and defects in the work or the materials.
Define DWV.
Drain, Waste and Vent.
What is the thinnest type of copper?
DWV
What device relieves abnormal temperature or pressure at a storage water heater?
Temperature and pressure relief valve.
Name two contaminated-water diseases.
Any two: cholera, typhoid, dysentery, hepatitis A.
Principle 9 refers to what?
Need for Traps in the Plumbing Drainage System.
Define PEX.
Cross-linked Polyethylene.
Besides soldering name 2 other ways to connect copper.
Pro Press and Compression connections
Which water heater stores little or no hot water?
Tankless water heater.
How are ancient covered drains similar to modern sewers?
Both use controlled slope, gravity, enclosed paths, outlets, and maintenance access to move wastewater away.