Handbook for heating and ventilating engineers . Diagrams for Pipe Sizes and Friction Heads. To illustrate the use of the two following diagrams, ap-ply to the pipe line, B, C, Art. 147. First, let I = 1500 feet,d = 8 inches and v = 5 feet per second. Trace along thevelocity line until it intersects the diameter line, then fol-low the ordinate to the top of the page and find the frictionhead, 13 feet for 1000 foot run or feet for the 1500 footrun. Second, let Q = cubic feet per second and d = Sinches. Trace to the left along the horizontal line represent-ing the volume of
Handbook for heating and ventilating engineers . Diagrams for Pipe Sizes and Friction Heads. To illustrate the use of the two following diagrams, ap-ply to the pipe line, B, C, Art. 147. First, let I = 1500 feet,d = 8 inches and v = 5 feet per second. Trace along thevelocity line until it intersects the diameter line, then fol-low the ordinate to the top of the page and find the frictionhead, 13 feet for 1000 foot run or feet for the 1500 footrun. Second, let Q = cubic feet per second and d = Sinches. Trace to the left along the horizontal line represent-ing the volume of cubic feet until it Intersects thediameter line, then read up and find the same friction headas before. Third, let the allowable friction head for 1500feet of main be 19 feet, when Q = cubic feet per secondor when v = 5 feet per second. Reverse the process givenabove and find an 8 inch pipe. 367 ?aj^op39 dJj l3sj piwnp tJi [ &] JjbavHP^/cr m OQooooOO ooo omo >or\joco «Din^ cooi O 7WPiit>i— • ___________ in ^J O CD 6 6. 368 m ^„ <D * «^raM ~o^ ^«!2»S < « «Mr^». (Ortt ^ ~<^^ - O O O OOO OOO
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectventila, bookyear1913
