Condensed q method friction loss 100 psi . 150 psi . Using the condensed Q method , the friction loss in 500 feet of 3 - inch fire hose flowing 300 gpm is : A. 5 gallons 1 Gallon of water contains 8. 50 psi . 45 psi . Calculating Method for PDP a. Let’s try a flow of 350 gpm, 3 x 4 equals 12, which is the friction loss in 100 feet of 3” hose. Study with Quizlet and memorize flashcards containing terms like During emergency operations, driver operators commonly use one or more of the following methods of determining pressure loss and pump discharge pressure: (5) Pg 281, Actual pressure of the water as it leaves the pump and enters the hoseline, total amount of pressure being discharged by the pump. which is the friction loss in 100 feet of 3” hose. 35 pounds 1 Gallon of water contains 231 cubic inches HEAD AND […] Using the condensed Q formula, what is the total pressure loss in 500 ft of 4-inch hose flowing 1,000 gallons per minute? 100 psi Using the condensed Q formula for 5-inch hose, what is Q^2 divided by? Dec 18, 2007 · As to where I come up with the friction loss figures. 12 psi . 175 psi Using the condensed Q formula, what is the total pressure loss in 500 feet of 4-inch hose flowing 1,000 gallons per minute? 100 psi Which statement about the flowmeter is MOST accurate? Using the condensed "Q" formula, calculate the friction loss for 300 feet of 3-inch hoseline, flowing at 300 gpm, 27. 1- or 2-inch hose. 14. Condensed "Q" Formula (for 3-inch hose) FL per hundred feet=Q2 Mar 12, 2025 · Study with Quizlet and memorize flashcards containing terms like Which of the following statements about the condensed Q method is MOST accurate?, Which type of flowmeter has only one simple moving part and therefore tends to require little maintenance?, The number displayed by a flowmeter reflects water pressure that will be discharged through the nozzle if the hoseline: and more. For example: (1. The finger method is very simple. L = number of 100 ft joints of hose. 12. c. Using the condensed Q method, the friction loss for 500 feet of 3 inch fire hose flowing 300 gpm is? 45 psi. 125 psl . PDP = Nozzle Pressure + Total Friction Loss b. BASIC CONCEPTS & FORMULAS FIRE DEPARTMENT HYDRAULICS BASIC CONCEPTS & FORMULAS WATER MEASUREMENTS 1 Cubic foot of water weighs 62. com This video reviews how to use the "Q" Method of calculating friction loss. (Continued) Pumping Apparatus Driver/Operator. Use the Condensed “Q” formula to calculate total pressure loss. Nov 16, 2014 · 11. any diameter of hose. 5)2 = 2 x 3 = 6 (actually = 6. In mathematical terms, it is a Study with Quizlet and memorize flashcards containing terms like 212. , 213. The answer is 4 which is the friction loss in 100 feet of 3” hose. d. FL = Friction loss in psi for 100 feet of 3 inch The gpm flowing method is applicable to both Which method of determining friction loss involves the use of in-line gauges to measure friction loss at various flows through specific hose layouts? Performing tests What is the primary consideration for friction loss? Oct 10, 2019 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright . 0 psi. Although sufficient for mini fairground calculations, the friction loss results will be 20% greater than when using the FL= CQ^2L. 23 Q What is the first step in developing a pump chart? What size of hose can the condensed Q method be used? What is the Condensed Q formula for 3-inch hose? FL = Q^2. Fl = K * Q * Q * L Where K is a constant for the size of hose. C. Learning Objectives 13. What is the Condensed Q method used for? Study These Flashcards. 3, 4, or 5-inch hose. Best type of strainer to use in a shallow stream is a: – Pressure lost from turbulence as water passes through pipes, hoses, fittings, adapters, and appliances – Measured in psi or kPa 4 Friction Loss (2 of 2) • Modern FL equation: FL = C Q2 L – Widely accepted as fire service standard – Success of equation is due to its ability to adapt to changes in hose diameter, water flow, and hose The condensed Q method formula cannot be used with _____ measurements The condensed Q formula may be used for operations in which the friction loss can be Using the "condensed Q" method as a "rule of thumb," the friction loss in 500 feet of 3-inch fire hose flowing 300 gpm is: 2 The difference between high-energy and low-energy foam systems is thatthey introduce: what will be the tpl due to friction in 450 feet of 4 inch hose flowing 750 gpm 50. any handline hose. May be used for operations in which the friction loss can be determined for 3 inch, 4 inch, or 5 inch hose. 25) MFRI Friction Loss Nov 16, 2019 · The result is friction loss per 100′ of 3” hose. 55 psi . Driver/operator must be aware of the margin of difference when using the condense Q formula. Use the GPM flowing method to calculate total pressure loss. Q = flow in 100's of gpms. If water is flowing through 200 feet of 5-inch hose at 300 gpm, then the theoretical friction loss is approximately: 2. B. 5 pounds 1 Cubic foot of water contains 1,728 cubic inches 1 Cubic foot of water contains 7. Friction loss for a specific hose being used. How do you calculate friction loss in a fire hose? When you need to calculate friction loss, find your desired gpm and multiply by 12. 25) (2. D. (Average coefficient was determined to be: . Using the condensed Q formula , the friction loss in 600 feet of 3 - inch hose flowing 500 gpm is approximately . b. 5)2 = 1 x 2 = 2 (actually = 2. GPM Friction Loss in 100’ 1001 psi 1502 psi 2004 psi 2506 psi 3009 psi 35012 psi 40016 psi 45020 psi 50025 psi Mar 25, 2015 · Hose size Friction Loss Formula 1 ½” 18Q² ESTIMATING SQUARES For the purposes of pump calculations, the square of any number that includes “½” can be estimated by multiplying the first whole number by the next higher whole number. I use a Polish Calculator or finger method for the fireground or when sitting around with time to contemplate, use this equation. This is a fireground friction loss method that will give you the friction loss in down the column). FL=CQ2L C= friction loss coefficient Q=flow rate in hundreds of gpm L=hose length in hundreds of feet. 72) GPM Friction Loss in 100’ 1001 psi 1502 psi 2004 psi 2506 psi 3009 psi 35012 psi 40016 psi 45020 See full list on fireengineering. A Determining estimates for friction loss on the fire ground for 3”,4” and 5” hose. State the equations for determining friction loss using the Condensed “Q” formula. The condensed Q formula may be used for operations in which the friction loss can be determined for: a. This method is known as Q2 or condensed Q. Oct 1, 2015 · Examples include the National Board of Fire Underwriters formula (2Q2+Q), the “condensed Q” formula for three-, four-, and five-inch hose (Q2), and the modern coefficient formula (CQ2L). Select facts about the GPM flowing method. Always start at the nozzle and work your way back to the pump. 625 what will be the tpl due to friction in 900 feet of 5 inch hose flowing 950 gpm Which method of determining friction loss involves the use of in-line gauges to measure friction loss at various flows through specific hose layouts? Performing tests What is the primary consideration for friction loss? Include master stream friction loss correct length for wyed hose lines round to nearest 5psi don't exceed test pressures Don't exceed max PDP 284-285 What is the condensed Q formula used for 3,4,or 5 inch hose (3"- FL= Q²) (4"- FL=Q²/5) (5"- FL=Q²/15) Q=GPM 287 Oct 8, 2024 · Study with Quizlet and memorize flashcards containing terms like What is the main purpose of using a flowmeter in fireground operations? (A) To measure water flow in GPM (B) To calculate pump discharge pressure (C) To regulate nozzle pressure (D) To calculate friction loss, Which flowmeter type measures water flow using a probe that extends into the waterway? (A) Spring probe flowmeter (B Study with Quizlet and memorize flashcards containing terms like Flowmeters can be used to assist the driver/operator in all of the following applications except:, The condensed Q formula may be used for operations in which the friction loss can be determined for:, Which statement about the gpm flowing method is MOST accurate? and more. Total Friction Loss F - Friction Loss #1 from nozzle back to the 1st appliance F - Friction Loss #2 from 1st appliance back to the pump or next appliance E - Elevation Loss or Gain in the hose layout Oct 10, 2019 · Calculating friction loss for 3 inch hose on the fire-ground using the Q squared method. A. tmegrc htvz dpy zis bhdzi bwzje ovovm pkqjx kxe lsqqk lygqf hyqvya xukf socvcki itklj