CCI Cheat Sheet 2026

The 30 highest-yield CCI facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. Per SMACNA standards, what is the recommended minimum thickness for lead flashing used at roof penetrations? → 2.5 lb/sq ft (0.109 inches)
2. An inspector observes that the contractor is placing concrete in layers exceeding 24 inches without re-vibrating. The RISK associated with this practice is: → Cold joints and inadequate consolidation between lifts
3. When measuring air content of fresh concrete using the pressure method (ASTM C231), which type of aggregate requires a correction factor? → Lightweight aggregate
4. The maturity method for estimating concrete strength is based on the relationship between strength and: → Time and temperature history of the concrete
5. An inspector notices workers using an aerial lift without wearing a body harness and lanyard. This violates which OSHA requirement? → 1926.453 – aerial lifts
6. Under CERCLA (Superfund), which legal doctrine can make a current construction project owner liable for cleanup of contamination caused by a prior owner? → Strict joint and several liability
7. Which federal law governs the disposal of solid and hazardous waste at construction sites and requires manifest tracking for hazardous waste shipments? → Resource Conservation and Recovery Act (RCRA)
8. What is the purpose of the air gap required at a plumbing fixture indirect waste connection? → Protect against backflow contamination
9. What is the primary purpose of a fire damper in an HVAC duct penetrating a fire-rated wall? → Prevent flame and hot gases from passing through the duct opening
10. What is the purpose of a vacuum breaker installed on a hose bibb? → Prevent back-siphonage of contaminated water into the potable supply
11. A pressure-reducing valve (PRV) is required when the water service pressure exceeds which threshold? → 80 psi
12. Which of the following best describes a key competency required for roofing & weatherproofing standards in CCI practice? → Strong analytical skills combined with effective communication and ethical judgment
13. What is the purpose of a mock-up inspection on a construction project? → To verify materials, workmanship, and appearance before full-scale production begins
14. Which ASTM standard governs the standard specification for ready-mixed concrete? → ASTM C94
15. Under IBC requirements, what is the wind uplift rating category that roofing materials in a hurricane-prone region must typically meet? → FM 1-60 or higher
16. What tool is commonly used for measuring concrete slump? → Slump cone
17. Which ASTM standard specifies the requirements for structural bolts commonly used in steel construction (A325 equivalent)? → ASTM F3125 Grade A325
18. What is the maximum conduit fill percentage allowed for three or more conductors per NEC Chapter 9? → 40%
19. Which document published by the National Roofing Contractors Association provides the primary technical standards for roofing installation practices? → NRCA Roofing Manual
20. Which of the following best describes a key competency required for foundation & soil analysis in CCI practice? → Strong analytical skills combined with effective communication and ethical judgment
21. Which ASTM specification covers high-strength low-alloy structural steel shapes, plates, and bars intended for welded, bolted, and riveted construction? → ASTM A572
22. Which type of roofing membrane is installed in a single layer and relies on vulcanized rubber chemistry for its weatherproofing properties? → EPDM
23. What is the minimum slope required for a low-slope roof to allow for positive drainage per IBC Chapter 15? → 1/4 inch per foot
24. What document outlines the specific tests, inspections, and qualifications required for Special Inspections on an IBC project? → Statement of Special Inspections (SSI)
25. Which retaining wall type relies on the weight of the wall itself and retained soil above its base to resist overturning? → Gravity retaining wall
26. What is the maximum travel distance to an exit in a non-sprinklered business occupancy under IBC? → 200 feet
27. Which type of stormwater BMP is classified as a 'source control' measure rather than a 'treatment' measure? → Covering and containing material stockpiles to prevent contact with rain
28. During wood-frame structural inspection, a 'cripple wall' refers to: → Short stud walls between the foundation and first floor framing
29. Emergency lighting systems must provide a minimum of how many foot-candles at the floor level along the path of egress? → 1 foot-candle
30. Under the IBC, 'special inspections' are required for certain high-risk construction activities. Who is responsible for employing the special inspector? → The owner or the owner's authorized agent