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Irrigation Hydraulics: Pressure, Flow, and Pipe
CSLB divides the official C-27 Landscaping examination into six sections: Planning and Estimating at about 18 percent, Construction Preparation at about 12 percent, Hardscape Installation at about 21 percent, Drainage, Irrigation, Lighting, and Plant Installation at about 21 percent, Maintenance and Repair at about 11 percent, and Safety at about 17 percent. Irrigation is the largest single topic in the PrepPass practice bank at about 25 percent, and this guide gives it three chapters. This first one is hydraulics: the pressure available, what consumes it, how flow and pipe size interact, and how to size a system so the last head on the last zone still works. The scope of the license is set by 16 CCR section 832.27, which describes a landscape contractor as one who constructs, maintains, repairs, installs, or subcontracts the development of landscape systems and facilities for public and private gardens and other areas designed to aesthetically, architecturally, horticulturally, or functionally improve the grounds within or surrounding a structure or a tract or plot of land, and who in connection with that work prepares and grades plots and areas of land for the installation of any architectural, horticultural, and decorative treatment or arrangement.
Sprinklers, Drip, Precipitation Rate, and Scheduling
This chapter covers what happens after the water leaves the valve: head selection and spacing, the precipitation rate calculation that connects hardware to a schedule, uniformity and auditing, and how a run time is actually derived rather than guessed. It is the second of three irrigation chapters. Every formula here is worked with numbers, because CSLB states that some examination questions require mathematical computation and a calculator is provided.
Backflow Prevention, Valves, Controllers, and MWELO Compliance
This chapter covers the three subjects that turn an irrigation system from pipe into a regulated installation: protecting the public drinking water supply from the landscape, the electrical and mechanical control system that operates it, and the state ordinance that governs how much water a new California landscape is allowed to use. Backflow protection is a public health matter, and the specific device required, the testing interval, and who may test it are set by the local water purveyor under state requirements, so verify the local rule rather than assuming.
Soil, Amendments, and Plant Nutrition
Landscape plants live in soil, and most landscape failures are soil failures wearing a plant's clothing. This chapter covers soil texture and what it means for irrigation, pH and the nutrient problems that follow from it, the amendments that do and do not work, fertilizer arithmetic, and MWELO's soil requirements. The next chapter covers the planting itself, turf, and the maintenance and repair content area that CSLB lists separately at about 11 percent of the examination.
Planting, Turf, Pruning, and Maintenance
This chapter covers installing plants correctly, establishing turf, and the Maintenance and Repair content area that CSLB lists separately at about 11 percent of the examination, which includes pruning, tree removal, and integrated pest management. Planting details are where a landscape either succeeds quietly for twenty years or declines visibly in three, and the specific dimensions and practices below are the ones the exam tests.
Grading, Drainage, and Stormwater
CSLB lists Construction Preparation at about 12 percent of the C-27 examination, covering site planning, erosion control, and trenching and grading, and it lists drainage as part of the 21 percent Drainage, Irrigation, Lighting, and Plant Installation section. This chapter covers the grading and water-management half of that work: how the ground is shaped, where the water goes, and the stormwater obligations that attach to a construction site. The next chapter covers the hardscape you build on that graded ground.
Hardscape: Base, Pavers, Concrete, Walls, and Lighting
Hardscape Installation is about 21 percent of the official CSLB C-27 outline, covering flatwork, masonry, posts, fences, retaining walls, and water features, and the outline separately lists lighting controllers and transformers. This chapter works through the base that everything sits on, interlocking pavers, concrete flatwork and its joints, segmental retaining walls, accessibility, and low-voltage lighting, and it marks the points where the work leaves the C-27 classification.
Excavation, DigAlert, and Trench Safety
Safety is about 17 percent of the official CSLB C-27 outline and about 20 percent of the PrepPass practice bank, and it is split across two chapters here. This one covers the most lethal part of landscape work: putting a trench in the ground. Every irrigation system, drain line, and footing starts with excavation, and excavation is the work that kills landscape workers most reliably, either by striking a buried utility or by collapsing on someone. Both hazards are governed by specific California law with specific numbers.
Equipment, Tree Work, Pesticides, and Site Safety
This chapter covers the rest of the safety content area: the powered equipment a landscape crew uses every day, the pesticide regulations that are unique to California and are enforced separately from Cal/OSHA, and the general site safety practices the exam asks about. Pesticide law in particular is worth attention, because it is administered by the Department of Pesticide Regulation and the county agricultural commissioners rather than by CSLB, and applying pesticides for hire without the right credential is a separate violation from anything in the contractors license law.
Planning, Estimating, Permits, and Contract Law
Planning and Estimating is about 18 percent of the official CSLB C-27 outline, covering project planning, hardscape, drainage and irrigation design, and project estimating. This chapter works the arithmetic that appears on the examination, with a calculator provided at the test center, and then covers the permits a landscape project triggers and the California contract rules that apply to residential landscape work. The volume conversions in the first section are the single most repeated calculation in the whole topic, so learn the two forms and you will not have to think about them again.
Luyện theo chủ đề
Jump straight into free practice questions for any single CSLB Landscaping (C-27) Trade content area.
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