Which code provides the primary scope and administrative provisions tested on the ICC M2 Commercial Mechanical Inspector exam?
General Administration
Question · Easy
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Under IMC Section 106, who is required to obtain a mechanical permit before installing or altering a mechanical system?
Introduction & Exam Overview
1.1 Current Exam Facts
Study guide
Per IMC Section 107, when is a mechanical contractor required to notify the code official that work is ready for inspection?
Question · Medium
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According to IMC Section 108, a stop work order may be issued by the code official when:
Per IMC Section 106.4.4, a mechanical permit becomes invalid if authorized work is not commenced within how many days after issuance?
Which statement best describes the relationship between the IMC and referenced standards such as SMACNA or UL?
Question · Hard
1.2 Open-Book Navigation, Tabbing & Allowed References
What action should the code official take when an existing mechanical system is found to be unsafe but not in immediate danger?
IMC Section 102.1 states that where differences occur between the IMC and a referenced standard, which document governs?
An inspector arrives at a job site and finds duct work already insulated and concealed in the ceiling above a hard lid before the rough-in inspection. Per the IMC, the inspector should:
Which of the following appliances is exempt from permit requirements under IMC Section 106.2?
1.3 Study Timeline, Retakes & 3-Year Renewal
Which term is defined in IMC Chapter 2 as 'approved in accordance with the regulations of the authority having jurisdiction'?
What IMC definition best describes a 'plenum'?
Per IMC Section 109, an appeal of a decision of the code official must generally be based on which of the following claims?
The code official discovers an appliance that does not bear a listing or label. Under IMC Section 304.1, the inspector should:
General Administration & Construction Documents
2.1 IMC Scope, Applicability, Inspector Duties & Legal
Which definition applies to 'labeled' equipment under IMC Chapter 2?
Which statement about IMC Section 102.3 (existing installations) is correct?
Per IMC Section 303.3, which of the following locations is PROHIBITED for the installation of fuel-fired appliances?
What is the minimum required working space in front of an appliance control side per IMC Section 306.1?
2.2 Permits, Inspections, Approvals & Violations
During plan review, an inspector notices the mechanical drawings do not indicate the locations of fire and smoke dampers. Which document governs the requirement to show these on drawings?
Plan Reading
When reviewing mechanical plans, which sheet typically contains the schedule of air-handling units, including CFM, static pressure, and coil data?
Per IMC Section 106.3.1, construction documents for mechanical work must include which of the following?
Project Administration
A contractor submits a manufacturer's installation manual that contradicts the IMC. Which governs?
Manufacturers Installation Instructions
2.3 Plan Reading, Approved Documents & Alternate Materials
Per IMC Section 304.1, listed appliances must be installed in accordance with:
When inspecting a rooftop unit, an inspector should verify the nameplate against which plan document?
A contractor asks the inspector for advice on how to design a ventilation system. What is the appropriate response under ICC ethics and IMC administrative limits?
Public Information And Legal
Which of the following best describes the purpose of a pre-construction meeting on a large commercial mechanical project?
Listings, Access & General Mechanical Safety
3.1 Listed Equipment & Manufacturer Installation Instructions
IMC Section 106.3.2 allows the code official to accept deferred submittals. Deferred submittals are portions of design that:
Which document is the authoritative source for confirming the clearance to combustibles of a listed gas-fired rooftop unit?
Per IMC Section 304.3, appliances installed in garages must have the source of ignition located at least how many inches above the floor?
Which IMC section governs the installation of a condensate disposal system for cooling coils?
3.2 Appliance Location, Access, Working Space & Clearances
A public records request asks for the submitted plans of a private commercial building. In most jurisdictions, the code official should:
Per IMC Section 901, a boiler installation must comply with which ASME standard referenced in the IMC?
Heating Cooling Water Heaters
Per IMC Section 1004, a low-pressure steam boiler is defined as one operating at a pressure not exceeding:
Per IMC Section 1006, a hot water boiler must be equipped with which of the following safety devices?
3.3 Condensate Disposal, Flood, Wind & Structural Protection
Per IMC Section 1101, refrigerant piping and equipment installation must comply with which referenced standard?
IMC Table 1103.1 establishes maximum quantities of refrigerant per occupied space based on the refrigerant classification. For Group A1 refrigerants, the limit is based on:
Per IMC Section 1105, a refrigeration machinery room is required when:
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