Competency A1

Self-Test 1

1. a. At the property line
2. c. Drainage
3. d. Combined
4. a. Vitrified clay
5. b. ABS
6. b. Trench cave-ins
7. a. Air quality
8. c. Pinch point hazard
9. c. It pumps sewage from a deep sewer to a higher elevation
10. b. Gravity

Self-Test 2

1. c. On private property only
2. b. 1 ft³ of water through a 1 ¼″ OD pipe in 1 minute
3. b. Litres per 15 minutes
4. c. National Building Code of Canada
5. d. The manufacturer
6. a. Fixture units
7. d. 2,360 litres per 15 minutes
8. c. 2,730 L/15 min
9. c. A sanitary building drain
10. c. 2%

Self-Test 3

1. d. A benchmark elevation
2. d. 2.5%      72.875 – 71.350 = 1.525m             1.525m ÷ 60m = 0.025m/m = 2.5%
3. b. 12 inches
4. a. Bell holes
5. b. It is accessible and installed on a branch
6. c. Lay warning tape on top of the first lift of compacted spoils
7. b. RCP
8. b. Bulldoze the spoils back into the trench once haunching has been compacted

Competency A2

Self-Test 1

1. b. A normal manhole
2. c. Steel cable loops
3. a. Its weight
4. a. A vent
5. b. A trapping hood
6. d. Sculpted channels
7. a. A drop manhole
8. b. An interceptor
9. b. A drywell
10. d. A driveway catch basin

Self-Test 2

1. a. 1 m
2. b. 1 m
3. b. 3 inches (75 mm)
4. c. 6 inches (150 mm)
5. d. Benching
6. a. Pipe that is the same diameter as the channel
7. b. 2 inches (50 mm)
8. b. 1% ([latex]\dfrac{1}{8}[/latex]″/ft)
9. a. A “French” drain
10. d. A flow-through type