ICC M3 study plan
ICC M3 · Give each week a clear focus.
8 weeks · About 7 hours per week
Mechanical Code - General Requirements and Administration & Mechanical Code - Duct Systems and Combustion Air
Map the scope, intent, and administrative provisions of the mechanical code by outlining permit, inspection, and approval requirements in your own words
Define key code terms (occupancy, listed, labeled, approved, accessible) and write a one-sentence definition for each from memory
Trace how general requirements feed into duct and combustion air provisions by listing five cross-references between administration and duct/combustion-air chapters
Draft a personal reference sheet of code section numbers you will return to during review
Your checkpoint
A 2-page handwritten general-requirements cheat sheet with at least 20 section references and definitions, self-quizzed to 80% recall
Mechanical Code - Duct Systems and Combustion Air & Mechanical Code - General Requirements and Administration
Diagram duct sizing, material, and installation requirements into a labeled flowchart
Calculate minimum combustion air requirements for three worked scenarios (two-permanent-opening, one-permanent-opening, and indoor-air methods) using the code formulas
Compare duct insulation, sealing, and support spacing rules and tabulate the limits
Solve 15 practice problems on combustion air and duct installation, recording which section justified each answer
Your checkpoint
A worked-problem set of 15 combustion air and duct questions with correct answers and cited code sections, scoring 75% or better
Mechanical Code - Heating, Cooling and Ventilation Systems
Summarize heating, cooling, and ventilation equipment requirements by listing installation, clearance, and access rules for each equipment type
Calculate required ventilation rates for three occupancy examples using the code's ventilation-rate tables
Explain the relationship between outdoor air, recirculation, and exhaust provisions by writing a short explanatory paragraph
Build flashcards for equipment clearances and ventilation rates and drill them to recall
Your checkpoint
A ventilation-rate calculation worksheet with three completed examples and a 30-card flashcard deck reviewed to 80% accuracy
Mechanical Code - Exhaust Systems
Classify exhaust systems by type and list the code requirements that distinguish each category
Determine required exhaust rates for three occupancy scenarios and document the governing table entries
Outline makeup air, termination, and duct-pressurization requirements for exhaust systems
Complete a 25-question mixed practice set spanning domains 1 through 4 and log every missed item with its code reference
Your checkpoint
A 25-question mixed practice exam scoring 70% or better, with an error log mapping each miss to a code section
Mechanical Code - Chimneys, Vents and Refrigeration & Mechanical Code - Exhaust Systems
Diagram chimney and vent system types and label the applicable requirements for each
Calculate vent sizing and connector requirements for two worked examples using the code tables
Summarize refrigeration system requirements including machinery room, refrigerant detection, and ventilation provisions
Cross-check exhaust termination requirements against chimney and vent termination rules and note conflicts or overlaps
Your checkpoint
A vent-sizing worked example with two completed calculations plus a one-page refrigeration requirements summary
Mechanical Code - General Requirements and Administration & Mechanical Code - Heating, Cooling and Ventilation Systems & Mechanical Code - Chimneys, Vents and Refrigeration
Re-read administration provisions and self-test on permit and inspection requirements without notes
Re-derive equipment clearance and ventilation requirements from memory, then verify against the code
Solve 20 practice questions weighted toward the weaker of domains 1, 2, and 5 based on prior error logs
Rewrite your cheat sheets to condense them by 30% while retaining all key figures
Your checkpoint
A condensed 1-page master reference sheet covering all five domains, verified against the code with zero factual errors
Mechanical Code - Exhaust Systems & Mechanical Code - Duct Systems and Combustion Air
Drill exhaust and duct/combustion-air problems until you can solve each type without referencing the code
Complete a timed 40-question practice exam covering all domains and record your per-domain score
Analyze per-domain results and rank your three weakest areas with specific section-level gaps
Target-review the two weakest areas by re-reading the relevant code sections and re-solving missed questions
Your checkpoint
A timed 40-question practice exam with a per-domain score report and a ranked list of the three weakest areas
Mechanical Code - General Requirements and Administration & Mechanical Code - Heating, Cooling and Ventilation Systems & Mechanical Code - Exhaust Systems & Mechanical Code - Duct Systems and Combustion Air & Mechanical Code - Chimneys, Vents and Refrigeration
Complete two full-length timed practice exams under exam conditions and compare scores for improvement
Review every missed question from both exams and confirm understanding by re-explaining each answer aloud
Recite key code figures, clearances, and rates from your master reference sheet without looking
Finalize an exam-day strategy covering question pacing, flagging, and time allocation across domains
Your checkpoint
Two completed full-length timed exams with a final review log showing at least 80% on the second attempt and a written exam-day pacing plan
Milestones
Week 2: Score 75% or better on the 15-question combustion air and duct problem set with cited sections for every answer
Week 4: Score 70% or better on the 25-question mixed exam and show a complete error log with code references
Week 6: Produce a verified 1-page master reference sheet and pass a no-notes self-test on administration and equipment requirements at 80%
Week 7: Score 75% or better overall on the timed 40-question exam with no domain below 65%
Week 8: Score 80% or better on the second full-length timed exam and demonstrate recall of key figures from the master sheet