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C-27 Landscaping Contractor License VIP Certification Exam — Series III
C27 License — The California C-27 Landscaping Contractor License exam is administered by PSI Services on behalf of the California Contractors State License Board (CSLB); it consists of approximately 100 multiple-choice questions with a 3.5-hour time limit and a 72% passing score, covering trade knowledge (irrigation, plant science, soils, pest management, drainage) and California business/law requirements.
28
Questions
210m
Time Limit
72.00%
To Pass
Question 1 of 28👑 VIP
You are designing a drip irrigation zone for a 1,200 sq ft planting bed containing drought-tolerant shrubs. The system will operate at 25 PSI dynamic pressure at the valve. The drip emitters you selected are rated at 1.0 GPH each at 25 PSI and are spaced 18 inches apart in a grid pattern. Approximately how many emitters will this zone require, and what is the zone's total flow rate in GPM?
Questions 2–28 and full explanations are VIP-exclusive.