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TECHNICAL DATA PIPE <br /> ECONOMY <br /> • DUCTILE IRON PIPE DEFLECTION DATA <br /> USEFUL TABLES <br /> immie x <br /> The tables below provide data for determining the amount of deflection permitted in varying <br /> distances for a given pipe line. <br /> TABLE I <br /> Push -On Joint Pipe Deflection In Inches <br /> PIPE SIZE - INCHES <br /> 3 4 6 8 10 12 14 16 18 20 24 30 36 <br /> Y- MAXIMUM DEFLECTION- DEGREES 5° 5° 5 °i 5° 5 °' 5° 3° 3° 3° 3° 3° 3° 3° <br /> X- DEFLECTION IN INCHES -18 FT. LENGTH 21 * 21 * 19 19 19 19 11 11 11 11 11 11 11 <br /> * 20 ft. lengths <br /> APPROXIMATE RADIUS IN FEET OF CURVE PRODUCED BY SUCCESSION OF JOINTS 18 FEET LENGTH <br /> 230* 230* 205 205 205 205 340 340 340 340; 340 340 340 <br /> 4" 6" 8" 10" 12" 14" 16" 18" 20" 24" 30" 36" <br /> * 20 ft. lengths <br /> TABLE II <br /> Maximum Deflection of Ductile Iron Pipe ** <br /> TYPE OF PIPE SIZE-INCHES <br /> PIPE JOINT 3 4 6 8 10 12 14 16 18 20 24 30 36 <br /> PUSH -ON 5 5° 5 ° 5° 5° 5° 3° 3° 3° 3° 3° 3° 3° <br /> MECHANICAL JOINT 8 ° -18' 8 ° -18' 7 -7' 5 ° -21' 5 ° -21' 5 ° -21' 3 3 -35' 3 ° -0' 3 °-0' 2 ° -23' <br /> RESTRAINED JOINT q° 4° 4° 40 3° 3° 3° 3° 3° 2° 2° <br /> RIVER CROSSING ... 15 15 15 15 15° 15° 15° 15° 15° 15° 15° <br /> * *Sound engineering dictates that to accommodate unknown field conditions, the "design" deflec- <br /> tion of any joint be limited to 80 percent of the maximum value shown in the table above. <br /> TABLE III <br /> The Deflection of Pipe in Feet for Different Angles <br /> of Deflection and Number of Lengths of Pipe <br /> TOTAL LENGTH NUMBER OF DEGREES OF DEFLECTION PER JOINT <br /> OF PIPE LENGTHS <br /> IN FEET OF PIPE 1 2° 3° 4° 5° 6° 12° 15° <br /> 18 1 .31 .63 .94! 1.26 1.57 1.88 3.74 - 4.66 <br /> 36 2 .94 1.88 2.82 3.76 4.69 5.62 11.06 13.66 <br /> 54 3 1.88 3.77 5.64 7.50 9.35 11.19 21.64 26.39 <br /> 72 4 3.14 6.27 9.38 12.47 15.51 18.51 35.02 41.96 <br /> 90 5 4.71 9.40 14.04 18.62 23.12 27.51 50.61 59.36 <br /> 108 6 6.59 13.14 19.60 25.94 32.12 38.09 67.73 ... <br /> 126 7 8.79 ! 17.49 26.05 34.39 42.44 50.13 85.63 <br /> 144 8 11.29 22.45 33.37 43.93 54.01 63.51 ... <br /> 162 9 14.11 28.02 41.54 54.51 66.74 78.07 <br /> 180 10 17.23 34.17 50.54 66.08 80.53 93.66 ... <br /> APPROX. RADIUS IN FEET <br /> OF CURVE PRODUCED 1034 514 343 258 206 172 86 68 <br /> BY A SUCCESSION OF JOINTS <br /> APPROX. NUMBER OF 18 FOOT <br /> LENGTHS OF PIPE REQUIRED TO 90 45 30 23 18 15 8 6 <br /> MAKE A 90 DEGREE BEND <br /> 232 <br />