answers Graded A+
Skill Groups
1. Occupational Skills
2. Piping Preparation and assembly
3. Drainage, Waste, Vents and Private Sewage Disposal
4. Water Service and Distribution
5. Fixtures, Appliances and Water Treatment Systems
6. Hydronic Heating Systems
7. Specialized Systems
8. Maintenance and repairs
All answers are below the test
,1. You are required to use a 20 foot ladder placed up against a building that is 40’ high. At what
vertical distance from the base of the building must the ladder be?
a. 4’
b. 5’
c. 6’
d. 7’
2. Confined spaces are hazardous environments because they usually have:
a. explosive atmospheres
b. restricted access and egress
c. flood hazards
d. limited room for maneuverability
3. Scaffolding erected_______ feet above the ground must have guard rails.
a. 4
b. 6
c. 8
d. 10
4. Class “A” fire extinguishers are used on and contain.
a. flammable liquids, CO2
b. Metal, CO2
c. Electrical components, foam
d. Combustible materials, Water
5. When using a Hilti powder actuated fastening tool, the device fails to fire when the trigger is
pulled. The first thing you should do is?
a. keep the tool in position and wait 30 seconds
b. remove the cartridge
c. inspect the magazine
d. depress the trigger again
6. Using the reference drawings below, determine how many 90º fittings would be required to
construct the piping arrangement.
a. 4
b. 5
c. 6
d. 7
, 7. How many 2" pipes does it take to equal the volume capacity of a 6" pipe?
a. 2
b. 5
c. 7
d. 9
8. When using oxy-fuel cutting and welding equipment, a flashback arrestor protects the operator
from?
a. flame traveling into the hoses
b. bright flashes
c. electrical shock
d. material blowback
9. Horizontally run ¾” type M copper pipe must be supported every:
a. 1 meter
b. 1.2 meters
c. 2.5 meters
d. 3 meters
10. Find the depth of the pipe invert at dimension X shown on Figure 1.
a. 1.85m
b. 1.90m
c. 1.95m
d. 2.00m
11. Water that is determined to have a PH of 5.5 would be considered:
a. mildly alkaline
b. very alkaline
c. very acidic
d. mildly acidic