Nicet Level 1 - Water Based Layout Practice Exam Questions And Answers Verified 100% Correct

Nicet Level 1 - Water Based Layout Practice Exam Questions And Answers Verified 100% Correct If a cross main in a ________ pipe sprinkler system has three branch lines per bay, one intermediate hanger shall be permitted to be omitted, if a branch line hanger is installed on the starter peice. - answer -Steel. Reference NFPA 13 2016, Section 9.2.4.3. NFPA 13 specifies the depth of cover fro underground pipe of a minimum of 2 1/2 ft, 3 ft. under driveways and 4 ft. under railroads tracks. However, it must be at least 1ft. below the frost line. If the frost line is 2 1/2 ft, what is the minimum depth of cover under a driveway? - answer -3 ½ ft. Reference NFPA 13 2016, Section 10.4. If you are laying pipes under driveways, you must go down a minimum of 3 ft. However, you must be at least 1 ft. below the frost line. In this case that is 3 ½ ft. Ordinary Hazard is a term that specifies: - answer -An occupancy classification, More combustibility than light hazard, and A system area limitation of 52,000 ft 2 . Reference NFPA 13 2016, Sections 5.3 and 8.2.1. What type of temperature is required for a sprinkler installed 2ft above a heating duct? - answer Intermediate. Reference NFPA 13 2016, Table 8.3.2.5(a). A three screw ceiling flange is used to attach the hangers for 6 in. Sch. 40 pipe. If 1 3/4" lag screws are used, what is the maximum spacing for the hangers? - answer -10 ft. Reference NFPA 13 2016, Section 9.1.5.2.2 - when 2 in. screws cannot be used, 1 ¾ in. screws can be used if the maximum hanger spacing in 10 ft. The owners info cert. indicates the property to be protected will contain nitrate film. Which of the following is also req. to be provided? - answer -Type, arrangement, location, and intended maximum quantities. Reference NFPA 13 2016, Figure A.23.1(b). Where the suction supply is under sufficient pressure to be of material value without the pump, the pump shall be installed with a _________, which shall be at least as large as the pipe size required for the discharge pipe. - answer -Bypass. Reference NFPA 20 2016, Section 4.15.4. What is the temp. class and color code for a sprinkler located at a ceiling w/ a max temp of 150 degrees? - answer -Intermediate, white. Reference NFPA 13 2016, Table 6.2.5.1. When conducting a hydrostatic flow test for a new fire sprinkler system, the test pressure should be _______ psi for ________ hours. - answer -200, 2. Reference NFPA 13 2016, Section 25.2.1.1. Supplementary conditions of a contract contain which of the following: - answer -Delay agreements, Time and pay schedules, and Addendums. Reference course content. Copper tube that has the greatest (largest0 inside diameter for 1 inch. nominal tube is: - answer -Type M. Reference NFPA 13 2016, Table A.6.3.5. Calculate the equivalent length of 4 in. Schedule 40 Black steel pipe of a 90 degree long turn elbow - answer -6 ft. Per NFPA 13 2016, Table 23.4.3.1.1, we find the equivalent length for a 4 in. Schedule 40 Black steel pipe with a 90 0 long-turn elbow is 6 ft. Determine the maximum spacing permitted for an Extra Hazard hydraulically calculated system with a density less than 0.25 gpm/ft^2 - answer -15 ft. Reference NFPA 13 2016, Table 8.6.2.2.1(c) In water flow test using two hydrants, ______ pressure is the pressure at the hydrant where the water is not flowing. - answer -Residual pressure. Reference NFPA 13 2016, Section A.24.2.2. NFPA 13 permits branchline hangers to be attached to metal roof decks if the pipe size doesnt exceed ____ inch(es) - answer -1 in. Reference NFPA 13 2016, Section 9.2.1.4.1. How more water can a (17/32) sprinkler deliver than a (1/2) sprinkler? - answer - Solution #7: k ½ = 5.6 k 17/32 = 8 Percentage increase: 8 - 5.6 = 43% 5.6 Which of the following reqs. pertaining to the relief valve for a centrifugal pump is incorrect? - answer -The relief valve shall only be hydraulically sized. Ref. NFPA 20 2016 Sec. 4.19.2.1. Where the suction supply is under sufficient pressure to be of material value without the pump, the pump shall be installed with a __________, which shall be at least as large as the pipe size required for the discharge pipe. - answer -Bypass Valve