ICC Residential Mechanical Inspector
Practice Exam Questions And Correct
Answers (Verified Answers)
1. What is the primary model code used for residential mechanical
| | | | | | | | |
| systems?
A. International Fuel Gas Code | | |
B. International Mechanical Code
| |
C. International Residential Code (IRC)
| | |
D. Uniform Mechanical Code
| |
The IRC governs one- and two-family dwellings, including mechanical
| | | | | | | |
| systems.
2. Mechanical ventilation requirements for dwelling units appear in which
| | | | | | | |
| section of the IRC?
| | |
,A. Chapter 10 |
B. Chapter 14 |
C. Chapter 15 |
D. Chapter 11 |
Chapter 15 covers exhaust systems and ventilation in residential
| | | | | | | |
| occupancies.
3. Minimum working space in front of mechanical equipment must be at
| | | | | | | | | |
| least:
A. 18 inches|
B. 30 inches|
C. 24 inches|
D. 36 inches|
The IRC requires a minimum 30-inch work space for serviceability.
| | | | | | | | |
4. Attic-installed appliances must have a passageway at least:
| | | | | | |
A. 20 in. high × 20 in. wide
| | | | | |
B. 30 in. high × 22 in. wide
| | | | | |
C. 24 in. high × 24 in. wide
| | | | | |
D. 36 in. high × 30 in. wide
| | | | | |
The IRC specifies a 30-in. high and 22-in. wide passage for access to
| | | | | | | | | | | |
| appliances.
5. A level service platform in an attic must be at least:
| | | | | | | | | |
,A. 20 × 20 in. | | |
B. 24 × 24 in. | | |
C. 30 × 30 in. | | |
D. 36 × 36 in. | | |
A 30-in. square level space is required for servicing equipment.
| | | | | | | | |
6. Condensate disposal must terminate: | | |
A. In a laundry standpipe
| | |
B. Directly onto the roof | | |
C. At an approved location per code
| | | | |
D. Into a floor drain only | | | |
The IRC allows several options but all must be approved and installed per
| | | | | | | | | | | |
| code.
7. Secondary condensate protection is required when: | | | | |
A. Equipment input exceeds 60,000 BTU/h | | | |
B. Primary drain is above a finished area | | | | | |
C. Condenser is ground-mounted | |
D. Equipment is gas-fired | |
Protection is needed to prevent water damage when equipment is located
| | | | | | | | | |
| above finished spaces. | |
8. Vent termination from a mechanical draft system must be at least how
| | | | | | | | | | |
| far from openings?
| |
, A. 6 inches
|
B. 12 inches
|
C. 4 feet
|
D. 10 feet |
The IRC requires vent terminals to maintain minimum clearances from
| | | | | | | | |
| openings to prevent exhaust reentry.
| | | |
9. Clothes dryers must be exhausted to:
| | | | |
A. Attic
B. Crawlspace
C. Garage
D. Outdoors
Dryer exhaust must discharge outdoors to minimize moisture and lint
| | | | | | | | |
| hazards.
10. Maximum dryer duct length (without reductions or offsets) per IRC is:
| | | | | | | | | |
A. 15 ft |
B. 20 ft |
C. 30 ft |
D. 35 ft |
The IRC specifies a maximum 35-ft duct length unless reduced for fittings.
| | | | | | | | | | |
11. Dryer duct minimum diameter is:
| | | |
A. 3 in.
|
B. 4 in.
|
Practice Exam Questions And Correct
Answers (Verified Answers)
1. What is the primary model code used for residential mechanical
| | | | | | | | |
| systems?
A. International Fuel Gas Code | | |
B. International Mechanical Code
| |
C. International Residential Code (IRC)
| | |
D. Uniform Mechanical Code
| |
The IRC governs one- and two-family dwellings, including mechanical
| | | | | | | |
| systems.
2. Mechanical ventilation requirements for dwelling units appear in which
| | | | | | | |
| section of the IRC?
| | |
,A. Chapter 10 |
B. Chapter 14 |
C. Chapter 15 |
D. Chapter 11 |
Chapter 15 covers exhaust systems and ventilation in residential
| | | | | | | |
| occupancies.
3. Minimum working space in front of mechanical equipment must be at
| | | | | | | | | |
| least:
A. 18 inches|
B. 30 inches|
C. 24 inches|
D. 36 inches|
The IRC requires a minimum 30-inch work space for serviceability.
| | | | | | | | |
4. Attic-installed appliances must have a passageway at least:
| | | | | | |
A. 20 in. high × 20 in. wide
| | | | | |
B. 30 in. high × 22 in. wide
| | | | | |
C. 24 in. high × 24 in. wide
| | | | | |
D. 36 in. high × 30 in. wide
| | | | | |
The IRC specifies a 30-in. high and 22-in. wide passage for access to
| | | | | | | | | | | |
| appliances.
5. A level service platform in an attic must be at least:
| | | | | | | | | |
,A. 20 × 20 in. | | |
B. 24 × 24 in. | | |
C. 30 × 30 in. | | |
D. 36 × 36 in. | | |
A 30-in. square level space is required for servicing equipment.
| | | | | | | | |
6. Condensate disposal must terminate: | | |
A. In a laundry standpipe
| | |
B. Directly onto the roof | | |
C. At an approved location per code
| | | | |
D. Into a floor drain only | | | |
The IRC allows several options but all must be approved and installed per
| | | | | | | | | | | |
| code.
7. Secondary condensate protection is required when: | | | | |
A. Equipment input exceeds 60,000 BTU/h | | | |
B. Primary drain is above a finished area | | | | | |
C. Condenser is ground-mounted | |
D. Equipment is gas-fired | |
Protection is needed to prevent water damage when equipment is located
| | | | | | | | | |
| above finished spaces. | |
8. Vent termination from a mechanical draft system must be at least how
| | | | | | | | | | |
| far from openings?
| |
, A. 6 inches
|
B. 12 inches
|
C. 4 feet
|
D. 10 feet |
The IRC requires vent terminals to maintain minimum clearances from
| | | | | | | | |
| openings to prevent exhaust reentry.
| | | |
9. Clothes dryers must be exhausted to:
| | | | |
A. Attic
B. Crawlspace
C. Garage
D. Outdoors
Dryer exhaust must discharge outdoors to minimize moisture and lint
| | | | | | | | |
| hazards.
10. Maximum dryer duct length (without reductions or offsets) per IRC is:
| | | | | | | | | |
A. 15 ft |
B. 20 ft |
C. 30 ft |
D. 35 ft |
The IRC specifies a maximum 35-ft duct length unless reduced for fittings.
| | | | | | | | | | |
11. Dryer duct minimum diameter is:
| | | |
A. 3 in.
|
B. 4 in.
|
