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7 of 29 <br /> A PROJECT NO. SHEET NO. <br /> ��r S211026-4XR <br /> ���ii` � <br /> � PROJECT 5117 27TH AVE W , EVERETT, WA 98203 <br /> LONGITUDE SUBJECT Stalrrnbiiiz@iierien Chart <br /> ONE TWENTY° <br /> ENGINEERING&DESIGN BY FY DATE 05/10/2022 <br /> . _ ... .... . <br /> Ideal Foundation Systems 2-7/8"0 helical Pile(0.203-inch wall thickness)-Soil Capacity per BR-3750 <br /> DIGGA 6K Drive Head Torque Correlation Factor, Ultimate Axial Compressive Allowable Arial Compressive <br /> Torque, T <br /> Pressure Kt Capacity Capacity <br /> (psi) (ft*Ibs) Compression (ft') Pu=Kt*T,(k►Ps) P.=0.5*P.,(kips) <br /> 500 1,554 _ 9 14.0 7.0 <br /> 600 1,865 9 16.8 8 4 <br /> 700 2,176 9 19.6 9.8 <br /> 800 2,486 9 22.4 11.2 <br /> 900 2,797 9 25.2 12.6 <br /> 1000 3,108 9 28.0 14.0 <br /> 1100 3,419 9 - 30.8 , 15.4 <br /> 1200 3,730 9 33.6 16.8 <br /> 1300 4,040 9 36.4 18.2. <br /> 1400 4,351 9 39.2 19.6 <br /> 1500 4,662 9 42.0 21.0 <br /> 1600 4,973 9 44.8 22.4 <br /> 1700 5,284 9 47.6 23.8 <br /> 1800 5,594 9 50.3 25.2 <br /> 1900 5,905 9 53.1 26$ <br /> 2000 6,216 9 55.9 28.0 <br /> MAX 2100 6,527 9 58.7 29.4 <br /> L)DIGGA 6K Drive Head differential pressure display to torque output has been pulled from the attached conversion charts provided by DIGGA. <br /> ii.)Per Table 5A of ESR-3750,the maximum installation torque rating of a 2-7/8"0 helical pile(0..203-inch waft thickness)is 8,300 ft*1bs_Per Ideal <br /> Manufacturing,Inc,the maximum installation torque rating of a 2-7/8'4 helical pile(0.203-inch wall thickness)is 8,000 ft'tbs.final installation <br /> torque shall not exceed the lesser of these limiting values. <br /> ift.)Piles shall reach a torque that correlates with an allowable capacity that meets or exceeds the maximum allowable load demand as listed in the <br /> structural package,but shall not exceed the maximum allowable capacity for any part of the pile assembly. <br /> iv.)Refer to ESR-3750 and Ideal Manufacturing Inc. documents for additional information and requirements. <br /> v.)Definitions per ESR-3750: <br /> T=Final installation torque in ft'lbs;the last torque reading taken during pile installation,using,for example,the <br /> torque reading instruments connected to the installation equipment. <br /> Kt=Torque correlation factor per BR-3750 <br /> P.=Ultimate axial compressive capacity(in kips)of helical pile <br /> P.=Allowable axial compressive capacity(in kips)of helical pile <br /> vi.)For torque readings between those listed,use the following equation to determine the allowable capacity:P,=(T*KJ/2 <br /> vii.)1 kip=1,000 lbs <br /> L120 ENGINEERING&DESIGN <br />