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Question 1 of 65
1. Question
What is the primary way lead base paint poisons an individual?
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Question 2 of 65
2. Question
Which group is most at risk from lead dust exposure?
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Question 3 of 65
3. Question
Lead-based paint was banned for residential use in what year?
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Question 4 of 65
4. Question
What is the default clearance between insulation and heat-producing devices?
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Question 5 of 65
5. Question
What is the primary concern of the building code for unventilated roofs?
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Question 6 of 65
6. Question
What type of house needs insulation and air sealing in its knee walls?
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Question 7 of 65
7. Question
Which of the following building materials isn’t an air barrier?
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Question 8 of 65
8. Question
Which of these masonry materials is an air barrier?
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Question 9 of 65
9. Question
What building element should the air barrier align with and be adjacent to?
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Question 10 of 65
10. Question
Which has a highest air-leakage rate?
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Question 11 of 65
11. Question
Which of these means the same thing as “thermal enclosure”?
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Question 12 of 65
12. Question
Which of these best describes the thermal boundary?
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Question 13 of 65
13. Question
Which of these is the best air barrier?
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Question 14 of 65
14. Question
From looking at the exterior of the home, which of these could help you make the best guess about whether that home was leaky or tight?
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Question 15 of 65
15. Question
What are the biggest attic air leaks in a split-level home?
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Question 16 of 65
16. Question
Which of these is the most relevant factor when sealing around chimneys?
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Question 17 of 65
17. Question
What type of house needs insulation and air sealing in its knee walls?
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Question 18 of 65
18. Question
What is the most important energy problem with building chases?
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Question 19 of 65
19. Question
Which of these is the most important reason why suspended ceilings an air leakage problem?
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Question 20 of 65
20. Question
What is a common cause of moisture damage around recessed light fixtures?
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Question 21 of 65
21. Question
Why are kitchen and bathroom soffits typically leaky?
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Question 22 of 65
22. Question
According to ASHRAE, what is the lowest required ventilation rate for a 4350 square foot home with 4 bedrooms from the table or the formula?
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Question 23 of 65
23. Question
According to the ASHRAE formula, what is the lowest required ventilation rate for a 1350 square foot home with 2 bedrooms from the table or the formula?
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Question 24 of 65
24. Question
According to the ASHRAE table, what is the required ventilation rate for a 1530 square foot home with 3 bedrooms?
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Question 25 of 65
25. Question
According to ASHRAE, what is the lowest required ventilation rate for a 2850 square foot home with 4 bedrooms from the table or the formula?
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Question 26 of 65
26. Question
What is the most important purpose of attic or roof ventilation?
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Question 27 of 65
27. Question
Which of the following is not an expectation of a exhaust only ventilation system?
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Question 28 of 65
28. Question
Which of these ventilating systems is most likely to create a positive house-to-outdoors pressures?
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Question 29 of 65
29. Question
What do you do about a backdraft damper on a ventilation fan?
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Question 30 of 65
30. Question
What is the most serious safety problem caused by an wide-open return plenum on an atmospherically vented furnace?
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Question 31 of 65
31. Question
What part of the building enclosure surrounds combustion heating equipment?
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Question 32 of 65
32. Question
Where is the correct sampling location for measuring carbon monoxide (CO) in an appliance equipped with a draft diverter?
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Question 33 of 65
33. Question
What kind of device do you see here?
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Question 34 of 65
34. Question
Choose the correct description of what you see here in this photo?
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Question 35 of 65
35. Question
Which of these is the best airsealer to seal the bottom of a door to the threshold?
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Question 36 of 65
36. Question
Which of the following could cause a latch bolt to fail to seat itself in its latch?
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Question 37 of 65
37. Question
Choose the best solution for weatherstripping an old exterior door with a badly damaged doorstop.
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Question 38 of 65
38. Question
Why would you drive a long screw into a hinge?
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Question 39 of 65
39. Question
Which of the following isn’t a benefit of fibrous insulation?
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Question 40 of 65
40. Question
Which of the following fibrous insulations would qualify as an air barrier?
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Question 41 of 65
41. Question
One unit of unfaced fiberglass insulation covers 82 square feet of wall space. A one-story home has a 134-foot perimeter with 8-ft-high exterior walls. Windows and doors take up 15% of the wall area. How many units of unfaced fiberglass do you need to insulate the home’s exterior walls?
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Question 42 of 65
42. Question
If an insulation installer tells you that he is “dense-packing” wall cavities, what would you expect the density of the cellulose in those walls to be?
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Question 43 of 65
43. Question
Why is cellulose considered the most “green” of the fibrous insulations?
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Question 44 of 65
44. Question
What is the minimum R-value per inch you would expect from high-density fiberglass batts or blown insulation?
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Question 45 of 65
45. Question
What density would you specify for fiberglass insulation blown into a wall cavity?
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Question 46 of 65
46. Question
If a foam board has a foil facing, how would you describe its vapor permeability?
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Question 47 of 65
47. Question
What type of foam board has the highest R-value per inch?
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Question 48 of 65
48. Question
Which type of foam board has the lowest water absorption?
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Question 49 of 65
49. Question
What is the least expensive type of foam board?
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Question 50 of 65
50. Question
What can happen to foam board if it gets hotter than 120 F?
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Question 51 of 65
51. Question
Which of the following isn’t a requirement for connecting metal ducts?
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Question 52 of 65
52. Question
What is the most common way that duct installation affects of envelope air leakage?
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Question 53 of 65
53. Question
Which of the following would be the most severe air leak in an air handler?
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Question 54 of 65
54. Question
Why do supply air leaks waste more energy than return air leaks?
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Question 55 of 65
55. Question
How thick should mastic be?
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Question 56 of 65
56. Question
What is the most common type of duct insulation?
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Question 57 of 65
57. Question
What is the most important function of duct insulation?
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Question 58 of 65
58. Question
Which of the following R-values represents a typical insulated duct?
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Question 59 of 65
59. Question
What condition requires a buried duct to be encapsulated, for example with SPF insulation?
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Question 60 of 65
60. Question
Which of these is NOT a good method for attaching duct insulation?
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Question 61 of 65
61. Question
An insulation-blowing machine blows 112 bags of insulation in 4 hours. How many bags does the machine blow each hour?
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Question 62 of 65
62. Question
What tools would you choose to make a hole in stucco siding?
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Question 63 of 65
63. Question
What part of an insulation blower would most likely need maintenance and parts replacement?
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Question 64 of 65
64. Question
What type of equipment would you choose to blow insulation into closed building cavities like walls?
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Question 65 of 65
65. Question
What type of vehicle would be most appropriate for housing insulation-blowing equipment for a remodeling company?
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