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| Section | Weight | Objectives |
|---|---|---|
| Duct Systems | 12% | - Insulation and sealing - Duct installation and supports - Duct construction and materials - Dampers and access doors |
| Fuel Supply Systems | 10% | - Pressure regulation and overpressure protection - Gas appliances and connections - Fuel gas piping materials and installation - Piping testing and inspection |
| Heating, Cooling & Water Heaters | 18% | - Solar thermal systems - Heat pumps and cooling equipment - HVAC equipment installation and clearance - Boilers and hydronic systems - Water heaters and storage tanks |
| Exhaust & Ventilation Systems | 20% | - Ventilation rates and outdoor air requirements - Commercial kitchen exhaust systems - Hazardous and special exhaust systems - Makeup air systems |
| General Administration | 18% | - Manufacturer's instructions and listings - Plan review and documentation - Code authority and enforcement - Permits and inspections |
| Combustion Air | 8% | - Air supply and venting - Combustion air requirements - Confined spaces and equipment rooms |
| Chimneys & Vents | 14% | - Clearances and termination requirements - Factory-built chimneys and vents - Chimney construction and materials - Vent systems and connections |
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NEW QUESTION # 30
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 # 31
Given: A recirculating industrial direct-fired makeup air heater has a rated input of 200,000 Btu/h .
Ventilation air is supplied by separate mechanical means.
Outside ventilation air shall be provided to supply at least _____ CFM.
Answer: D
Explanation:
The applicable provision requires direct-fired industrial air heaters to supply outside ventilation air at a rate of not less than 4 cfm per 1,000 Btu/h of rated input where ventilation air is provided by separate mechanical means. For 200,000 Btu/h , the required outside air is:
200,000 ÷ 1,000 = 200
200 × 4 = 800 cfm
So the correct answer is C
NEW QUESTION # 32
For gas piping installations, which of the following is an acceptable joining method for polyethylene (PE) pipe?
Answer: D
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 # 33
The exhibit shows a _____ in. diameter gas line between unit heaters 5 and 8.
Answer: A
Explanation:
Based on the mechanical plan shown in the exhibit, the gas line between unit heaters 5 and 8 is labeled as 1 inch in diameter. Therefore, the correct answer is B.
NEW QUESTION # 34
All exposed gas piping shall be kept above grade a minimum of _____ inches.
Answer: B
Explanation:
The IFGC rule for above-ground outdoor piping requires piping installed outdoors to be elevated not less than 3 1/2 inches above ground , and where installed across roof surfaces, not less than 3 1/2 inches above the roof surface . Therefore, the correct answer is A .
NEW QUESTION # 35
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