Ch. 1-7 IFSTA Aerial Operator questions with correct answers

Ch. 1-7 IFSTA Aerial Operator questions with correct answers ___: the fully extended length of the ladder. - Correct Answers The working height _____: provides the primary function of providing continuous rotation of the aerial device on a horizontal plane. - Correct Answers Turntable the working height of north American-made aerial ladders range from ___ to ___ feet. - Correct Answers 50 to 135 feet The working height for aerial ladders is measured from: - Correct Answers the ground to the highest ladder rung with the ladder at maximum elevation and extension The main uses of aerial ladders are: - Correct Answers rescue, ventilation, elevated master streams application, and gaining access to upper levels Apparatus equipped with steerable rear wheels on the trailer: - Correct Answers tractor-trailer aerial (tiller trucks) In general, tractor-trailer trucks are ___ maneuverable that single-chassis vehicles. - Correct Answers More maneuverable ____ consist of an assembly of bars or rods to form a rigid framework. - Correct Answers Trusses trusses may be constructed by several methods, but engineering design has proven hat trusses lend more strength if their assembled members form ___ or a combination of triangles. - Correct Answers Triangles NFPA 1901 requires that aerial ladders have at least two sections and a minimum reach of ___ feet. - Correct Answers 50 feet The bottom section of the aerial ladder is referred to as the __ section. - Correct Answers Base (bed) section The two most common materials for construction of aerial ladders are: - Correct Answers heat-treated aluminum alloy and steel The three main portions of an aerial ladder to which firefighters and driver/operators commonly refer to are: - Correct Answers the base rails, the top rails, and the rungs The ___, commonly referred to as the beams, are the lower chords of the aerial ladder to which the rungs, trussing, and other portions of the ladder are attached. - Correct Answers Base rails The ____, also known as the handrails, are the top chords to which the opposite ends of the trussing are attached. - Correct Answers Top rails The ___ are the portions that are attached between the two base rails and are used as steps for personnel on the aerial ladder. - Correct Answers Rungs NFPA 1901 requires that no section of the aerial ladder be narrower than ___ inches. - Correct Answers 18 inches The rungs should be spaced on ____ centers and be covered with a nonskid finish. - Correct Answers 14-inche The top (hand) rails must be at least __ inch(s) wide and at least ___ inches above the base rail. - Correct Answers 1 inch wide at at least 12 inches above base the base rail NFPA 1901 requires that an aerial ladder rated with a vertical high of ____ or less, with stabilizers set, shall be capable of being raised from the bedded position to its maximum elevation and extension and rotated 90° in ___ seconds or less. - Correct Answers 110 feet or less, 120 seconds or less. NFPA 1901 requires an aerial ladders 110 feet or greater to go from bedding to maximum elevation and extension and rotated 90° in ____ seconds. - Correct Answers 180 seconds All aerial ladders manufactured since 1991 must have a minimum tip load of ____ pounds when the ladder is fully extended and at any elevation within its normal range of motion. - Correct Answers 250 pounds The three