1. Define and then explain what guidelines, regulations and codes are and how they assist in doing a building commissioning?
2. What is the purpose of the energy star program and how explain the different levels of certification?
3. Categorize the four classes of plumbing materials and pipes used in plumbing systems and explain the use of at least three of the different unique components (i.e. specialty valves etc.)?
4. How many different types of water meters are there, what is the purpose or unique feature of each one and where is each type normally installed?
5. Use figure 3-2 to determine the individual dfu valves and the horizontal branch drain pipe required to serve all of the following fixtures;

---Three way closets, four lavatories, one bath tub, two kitchen sinks, two laundry trays

1. What is the purpose of clean outs in building sewer systems, where should they be located (5 locations) and why is the clean out so important?
2. Explain the purpose of vents in plumbing systems, the types of vent are installed and the consequences of not having a vent?
3. Define a drainage fixture unit and then discuss its role in designing the size of pipe used throughout the system?