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| Section | Weight | Objectives |
|---|---|---|
| Duct Systems | 12% | - Duct construction and materials - Insulation and sealing - Dampers and access doors - Duct installation and supports |
| Fuel Supply Systems | 10% | - Fuel gas piping materials and installation - Pressure regulation and overpressure protection - Gas appliances and connections - Piping testing and inspection |
| Exhaust & Ventilation Systems | 20% | - Makeup air systems - Hazardous and special exhaust systems - Ventilation rates and outdoor air requirements - Commercial kitchen exhaust systems |
| Chimneys & Vents | 14% | - Clearances and termination requirements - Factory-built chimneys and vents - Chimney construction and materials - Vent systems and connections |
| Combustion Air | 8% | - Combustion air requirements - Air supply and venting - Confined spaces and equipment rooms |
| General Administration | 18% | - Permits and inspections - Plan review and documentation - Manufacturer's instructions and listings - Code authority and enforcement |
| Heating, Cooling & Water Heaters | 18% | - Solar thermal systems - HVAC equipment installation and clearance - Boilers and hydronic systems - Water heaters and storage tanks - Heat pumps and cooling equipment |
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NEW QUESTION # 29
An 8-inch Type B venting system with a listed vent cap must terminate a minimum of _____ feet above the flat roof through which it passes.
Answer: C
Explanation:
For a Type B gas vent with a listed vent cap terminating through a flat roof , the minimum required termination height is 1 foot above the roof . That makes Option A correct. This is consistent with gas vent termination tables used with listed Type B vent systems and the code framework for Type B vent terminations.
NEW QUESTION # 30
The minimum size for access openings for fire dampers shall be:
Answer: C
Explanation:
The IMC requires access openings for fire dampers to be of a size that allows maintenance and resetting of the damper . The code does not set the answer as same-as-duct, half-diagonal, or a universal 12-inch by 12- inch opening. So Option C is correct.
NEW QUESTION # 31
Exposed solar thermal equipment protected by motor vehicle impact may be installed at what height?
Answer: D
Explanation:
The IMC states that solar thermal equipment exposed to vehicular traffic must be installed not less than 6 feet above the finished floor . It then gives an exception stating that this requirement does not apply where the equipment is protected from motor vehicle impact . Because the height requirement is removed by that exception, the best answer from the choices given is A, directly on finished floor . This is an inference from the exception language.
NEW QUESTION # 32
The minimum rise required for a 10-foot run of vent connector is _____ inches.
Answer: D
Explanation:
Vent connectors must be installed with a minimum rise of 1/4 inch per foot . For a 10-foot run, the required rise is:
10 ร 1/4 inch = 2.5 inches .
That equals 2-1/2 inches , so Option D is correct.
NEW QUESTION # 33
Supports for hazardous exhaust duct shall be constructed of:
Answer: C
Explanation:
Hazardous exhaust systems are regulated under the IMC provisions for special exhaust because they handle potentially dangerous fumes, vapors, dusts, or other contaminants. The code requires the duct system and its support components to be suitable for that hazard level, and supports for hazardous exhaust duct must be constructed of noncombustible material . That is why Option C is correct. Plastic and fibrous supports would not satisfy the required fire and safety performance, and UL 181 applies to certain factory-made air ducts and connectors, not as the governing support-material rule for hazardous exhaust duct supports.
NEW QUESTION # 34
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