What’s included Learn the material: Landscaping (C-27) Study Guide Book Pass the test: Landscaping (C-27) Practice Exam What this covers Per the state's classification, a C-27 contractor constructs, maintains, and repairs plots and areas of land including hardscapes, drainage systems, irrigation, planting, and retaining walls. This printed book covers the subjects the state tests. See the official CSLB C-27 classification. Sample questions: Try our free practice test Why would you not want to waterproof a retaining wall?A. The water seeping through would discolor it · ✓ B. Water pressure would build up against the wall · C. It would become too wet on the low side · D. None of the above What drain design should you use when draining a large flat area?A. Grid · B. Parallel · C. Radial · ✓ D. Concentric circle For a two-story building, how deep in the soil must the footings be?A. 12" · B. 16" · ✓ C. 18" · D. 24" What is the cause if a ring of green lawn surrounds all of the sprinkler heads on a lawn?✓ A. Excess water pressure · B. Wrong valve type · C. Mechanism is defective · D. Sprinkler head is too low After sowing a newly seeded lawn, a thorough soaking is necessary and after that it should be watered:A. once per day · B. morning and evening · ✓ C. with a light sprinkling by hand applied 3 to 4 times a day · D. once a week After the grass seed has germinated, the watering schedule should be adjusted:A. to gradually increase · ✓ B. to gradually decrease · C. by not watering until ready to mow · D. by watering heavily until ready to mow
