AZ ROC A (KA) Dual Engineering study guide
AZ ROC A (KA) Dual Engineering · Work through your exam, one topic at a time.
The Arizona Registrar of Contractors A (KA) Dual Engineering license is a state contractor credential for firms that take on engineered commercial and industrial construction - the kind of work where a single project mixes structural concrete, steel erection, mechanical equipment, electrical distribution, and process piping. The "Dual Engineering" designation signals that the qualifier is examined across both general engineering and the building-trades engineering scope rather than a single narrow trade. The AZ ROC A (KA) Dual Engineering study guide has 8 sections and about 2,482 words.
01Business Management and Law
A licensed contractor in Arizona operates inside a web of contract law, licensing rules, and business formalities. Know the difference between a contract (offer, acceptance, consideration) and a change order (a written modification signed by an authorized party).
347 words, about 2 min02Site Work, Excavation, and Earthwork
Earthwork questions test whether you understand soil behavior , compaction , and water . Key terms: bank (in-place), loose (excavated), and compacted volume, tied together by shrinkage and swell factors.
316 words, about 2 min03Concrete and Structural Systems
Concrete is strong in compression, weak in tension; reinforcement carries tension. Understand water-cement ratio as the primary driver of strength and durability - lower ratio, higher strength, less permeability.
322 words, about 2 min04Mechanical and Electrical Systems
This domain tests coordination as much as theory. For mechanical , know airflow (CFM), duct sizing, static pressure, equipment clearances, condensate management, and refrigerant and combustion-air requirements.
303 words, about 2 min05Plumbing and Piping Systems
Plumbing questions test slope, venting, and protection . Gravity drain lines need continuous fall - typically 1/4 inch per foot for smaller lines, less for larger mains.
314 words, about 2 min06Structural Steel and Welding
Steel questions test fit-up, connection type, and inspection . welded connections, high-strength bolts (snug-tight vs.
304 words, about 2 min07Project Plans, Specifications, and Estimating
This domain rewards disciplined reading. Know the order of precedence in contract documents (usually the agreement, then addenda, then specifications, then drawings - but verify the contract's stated order).
295 words, about 1 min08Safety, Codes, and Environmental Compliance
Safety questions center on hazard recognition and hierarchy of controls - elimination, substitution, engineering controls, administrative controls, then PPE as the last line. Know fall protection triggers and systems, excavation protective systems (sloping, shoring, shielding) and the competent person role, scaffold and ladder rules, hazard communication , and confined space entry.
281 words, about 1 min