Code Book Study Guide
Know exactly where to find answers in your reference materials. The exam is open-book - use this guide to navigate the codes quickly and find the right pages fast.
About Page Numbers
Page numbers are approximate and based on 2021 editions. They may vary slightly between printings. Section numbers (e.g., "Section 304.1") are always reliable - use them to confirm you're in the right place.
Michigan Mechanical Code
The primary code for mechanical installations in Michigan
2021•State of Michigan / ICC•234 pages
Page numbers based on 2021 ICC Michigan Mechanical Code. May vary by printing.
Chapter 1: Administration
pp. 1-14
PermitsInspectionsViolationsBoard of Appeals
Medium Relevance
Chapter 2: Definitions
pp. 15-24
ApprovedListedLabeledMechanical system+1 more
Medium Relevance
Chapter 3: General Regulations
pp. 25-42
Equipment approvalInstallationClearancesAccess+1 more
High Relevance
Chapter 4: Ventilation
pp. 43-66
Outdoor airCFM requirementsExhaust systemsMake-up air
High Relevance
Chapter 5: Exhaust Systems
pp. 67-88
Hazardous exhaustCommercial kitchensClothes dryersGrease ducts
High Relevance
Chapter 6: Duct Systems
pp. 89-112
Duct materialsDuct sizingJointsInsulation+1 more
High Relevance
Chapter 7: Combustion Air
pp. 113-128
Air supplyOpening sizesIndoor vs outdoor airDirect vent
High Relevance
Chapter 8: Chimneys and Vents
pp. 129-156
Vent connectorsChimney typesVent sizingTerminations
High Relevance
Chapter 9: Specific Appliances
pp. 157-180
Unit heatersFloor furnacesFireplacesSauna heaters
Medium Relevance
Chapter 10: Boilers, Water Heaters, and Pressure Vessels
pp. 181-198
Boiler installationWater heatersRelief valvesExpansion tanks
High Relevance
Chapter 11: Refrigeration
pp. 199-220
Refrigerant typesSystem classificationPiping requirementsMachinery rooms
High Relevance
Chapter 12: Hydronic Piping
pp. 221-234
Piping materialsJointsHangersTesting+1 more
High Relevance
Open-Book Exam Strategy
Before the Exam
- ✓Tab your code books using this guide - especially high-relevance chapters
- ✓Mark key tables (sizing, clearances, ventilation rates)
- ✓Write page numbers on your tabs for quick reference
- ✓Familiarize yourself with the table of contents
During the Exam
- ✓Answer questions you know first - don't waste time looking up easy ones
- ✓Use section numbers in questions as direct lookup guides
- ✓For calculations, go straight to the relevant table
- ✓If stuck, check the index in your code book