Homework #4
CMGT - 325
Name:
California State University East Bay
School of Engineering
Construction Management Program
CMGT-325: Electrical and Mechanical Systems in Construction
Notes: (1) This is an individual assignment. (2) Answers can be typed or handwritten and scanned as
needed. (3) Answer questions 1 – 12 according to the textbook. (4) Submit a digital copy on Blackboard
by the date shown below. A link is provided under the Course Material - Homework section on
Blackboard.
Due Date: Monday 05/03/21
[25 points]
1. What three major characteristics are listed by the textbook regarding domestic water
“water quality” use in a building?
2. What is a pump performance curve?
3. Please fill in the definitions of the following terms:
Roof drain:
Area drain:
Downspout:
Gutter:
Leader:
Subsoil drain:
Controlled storm drainage system:
Primary drainage system:
Homework #4
CMGT - 325
Name:
Secondary drainage system:
Sump:
Sump pump:
Projected roof area or horizontal projected roof area:
4. What is the purpose of control valves?
5. Describe a reverse osmosis (RO) water purification system.
6. Please describe what a backflow preventer does.
7. When a domestic water system is abruptly shut, such as closing a faucet or flushing a
toilet, what type of device can be installed to absorb the shock?
8. Please fill in the definitions of the following terms:
Waste (liquid):
Sanitary Waste:
Homework #4
CMGT - 325
Name:
Soil (waste):
Sanitary Drain:
Sanitary Sewer:
Storm Water:
Storm Drain:
Storm Sewer:
Combination Sewer:
9. What must you do if there is not enough water pressure provided to a building?
10. What is a hot water “re-circ” line?
11. What environmental act regulates the water usage of fixtures?
12. Regarding plumbing fixtures what is an “Air Gap”?
Homework #4
CMGT - 325
Name:
13. Based on the isometric view shown (6/P3.0) label each fixture with the corresponding
drainage fixture unit(s) using Table 702.1 provided. After fully labeling, what is the total
quantity of drainage fixture units at the sewer main?
[hint: use Table 1A provided below for terminology when reading Table 702.1]
Total Drainage Fixture Units (DFU) = ________________________________________
Homework #4
CMGT - 325
Name:
TABLE 1A: PLUMBING FIXTURE TERMS
TAG
FIXTURE TYPE
P-1
Water Closet, 1.6 GPF Flushometer Tank
P-1H
Water Closet, greater than 1.6 GPF Flushometer Valve
P-2
Not Used
P-3
Lavatory – Countertop (ADA) “use as individual”
P-4
Mop Basin Sink
P-5
Lavatory – Wall Mounted (ADA)
P-6
Electric Water Cooler
P-8
Service Sink, Flushing Rim
H-1
Clothes Washer
Homework #4
CMGT - 325
Name: