Landscaping C-27 Trade Test 2 Already Graded A+

Landscaping C-27 Trade Test 2 Already Graded A+ What does the abbreviation "B.C" Stand for on a plan? Bottom of curb If you are coming off a 120v household circuit, & you must convert to 12v, what should you do? Call an electrician In a low-voltage system, there are two 25-watt lights, five 30-watt lights, and one 50-watt light. How many watts would you have to run in the system? 250 watts When splicing into a lighting system, how are the splices made? Above ground What do straight, parallel, stacked lines close together on a contour plan represent? A steep slope Rough Lumber symbol If lights are dimming at the end of a line, what is the most probable cause? They were wired in series When laying out a deck, what would be the least likely cause of excessive splitting or cracking in a newly constructed deck built with 2x6's? Wood is green What is the white wire in an electrical system? Neutral What is required to change a 110-volt system to a workable low-voltage system? Transformer A concrete slab must be at least how many inches thick if passenger vehicles are to park upon it? 4" What are the dressed (actual) dimensions of 4x8's? 3-1/2" x 7-1/4" If a drain is 33' long and graded at 2%, how much would it change in elevation? 2/3' = 8" What type of line is used to represent existing contour lines on a grading plan? Dashed What is the safest size for an electrical extension cord? No. 12 AWG What do the functions of a self-loading box scraper include? Grading, compacting, leveling, and hauling What is the last finishing step in concrete work? Floating What is grade 1 construction lumber used for? Not necessarily for appearance If you run a drain system above the tree roots but under the final grade, what drain design should you use? Concentric circle For an invert elevation, what would the top of a drain be shown? At the inside bottom of a pipe How do you determine the size of the transformer used for an exterior lighting system? The number of amps and the distance covered When do you trowel concrete? Immediately after floating If outdoor lights continue to flicker on and off, what is the most likely cause? A fault in the transformer Low-voltage control conductors must be what type? UF What is the best tool for drilling brick? Masonry bit If you join two S4S 4x4's together, what is the minimum size bolt that you could use? 8" What makes concrete scale? Using salt on non-air-entrained concrete during ice removal What should be done with debris consisting of tree stumps, etc? Take to the dump What is the steepest grade at which mowing equipment can safely operate on a slope? 25% (4:1) If point A is at 96' and the rod at point A reads 3.4' , then what is the height of the transit? 99.4' When is the best time to prune trees? Winter What are the dressed (actual) dimensions of S4S 2x6's? 1-1/2" x 5-1/2" Finished lumber symbol If there is a rectangular backyard lot with a house on one side and a steep slope on the other, what would be the best solution to the drainage problem? Create mounds and low points, with drains at the low points A typical sprinkler valve has how many wires? 2 For an exposed-aggregate finish on a concrete slab, the aggregate is applied immediately after which step? Darbying What is the steepest grade at which grading machinery can safely operate?