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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Duct Systems | 12% | - Duct construction and materials - Duct installation and supports - Insulation and sealing - Dampers and access doors |
| Topic 2: Heating, Cooling & Water Heaters | 18% | - HVAC equipment installation and clearance - Water heaters and storage tanks - Heat pumps and cooling equipment - Solar thermal systems - Boilers and hydronic systems |
| Topic 3: Fuel Supply Systems | 10% | - Fuel gas piping materials and installation - Pressure regulation and overpressure protection - Gas appliances and connections - Piping testing and inspection |
| Topic 4: Combustion Air | 8% | - Combustion air requirements - Confined spaces and equipment rooms - Air supply and venting |
| Topic 5: General Administration | 18% | - Manufacturer's instructions and listings - Code authority and enforcement - Permits and inspections - Plan review and documentation |
| Topic 6: Chimneys & Vents | 14% | - Vent systems and connections - Clearances and termination requirements - Chimney construction and materials - Factory-built chimneys and vents |
| Topic 7: Exhaust & Ventilation Systems | 20% | - Makeup air systems - Ventilation rates and outdoor air requirements - Hazardous and special exhaust systems - Commercial kitchen exhaust systems |
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NEW QUESTION # 18
For gas piping installations, which of the following is an acceptable joining method for polyethylene (PE) pipe?
Answer: C
Explanation:
This item appears to use older or simplified exam wording . Current ICC language for polyethylene plastic piping identifies heat-fusion joints, electrofusion joints, and stab-type insert fittings as the named PE joining methods, not solvent cement or threaded couplings. Among the answer choices you provided, D.
Compression coupling is the only choice that aligns most closely with a mechanical fitting/joining approach for PE systems, while rubber cement, solvent cement, and threaded coupling do not match ICC PE joining practice. Because of that, D is the best answer from the listed options, but this question should be tied to the exact code cycle or source exam bank if you want absolute cycle-specific certainty
NEW QUESTION # 19
The optional integral clearance reduction system is designed to meet which NFPA standard?
Answer: B
Explanation:
Based on the specification sheet shown in the exhibit, the design features state that the optional integral clearance reduction system meets the requirements of NFPA 96 . Therefore, the correct answer is D .
NEW QUESTION # 20
A cooling system with a condensate disposal system:
Answer: C
Explanation:
The ICC mechanical code requires condensate disposal components to be of approved corrosion-resistant material , and the drain line shall not decrease in size from the drain pan connection to the place of disposal.
The code minimum size is 3/4 inch , so the 1/2-inch statement is incorrect, and the code is not limited to PVC only. Also, the slope requirement for horizontal drain piping is not less than 1/8 inch per foot , not 1/4 inch per foot. That makes Option A the only fully correct statement.
NEW QUESTION # 21
Supports for hazardous exhaust duct shall be constructed of:
Answer: A
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 # 22
Given: a six-story, sprinklered, multifamily building with a continuously ventilated shaft extending vertically from the first floor to the roof and used for exhaust.
Which of the following requirements must also be met?
Answer: D
Explanation:
For this type of continuously ventilated exhaust shaft serving a multifamily building, the code requires the kitchen exhaust connection to penetrate the shaft and extend vertically not less than 22 inches without a fire damper. That matches Option D .
NEW QUESTION # 23
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