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0 .....1.4141- <br /> PROJECT NO. SHEET NO. <br /> S201123-4XR <br /> PROJECT 1011 Temple Dr, Everett, WA 98201 <br /> LONGITUDE SUBJECT Foundation Stabilization/Jacking <br /> ONE TWENTY ZT 1/18/2021 <br /> ENGINEERING&DESIGN BY DATE <br /> ideal Foundation Systems 2-7/8V Helical Pile(0.203-inch wall thickness)-Soil Capacity per ESA-3750 <br /> DIGGA 6K Drive Head Torque Correlation factor, Ultimate Axial Compressive Allowable Axial Compressive <br /> Torque, T <br /> Pressure Kt Capacity Capacity <br /> I p Fibs) Compression f r) P,„=Kt"T,(lips) Pa=O.SS"Pa.(kips) <br /> 500 1,554 9 14.0 7.0 <br /> . . _ <br /> 600 1,865 9 16.8 8.4 <br /> 700 2,176 9 19.6 9.8 <br /> 8 2,486 9 22.4 11_2 <br /> 900 2,797 9 25.2 12.6 <br /> 15 3,108 9 28.0 14.0 <br /> 8 15.4 <br /> 30 9 . <br /> 11fN3 3,419 . . <br /> 1200 3,730 9 33.6 16.8 <br /> f <br /> 1300 4,040 9 36.4 18.2 <br /> IAKino 4,351 9 39.2 19.6 <br /> 150 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 9 503 25.2 <br /> /900 5,905 9 53.1 26 6 <br /> 0 6,216 9 28.0 <br /> MAX 2100 6,527 9 58.7 29.4 <br /> i.)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 wall thickness)is 8,300 fiibs.Per Ideal <br /> Manufacturing,Inc.,the maximum installation torque rating of a 2-7/8.'0 helical pile(0.203-inch wall thickness)is 8,000 ft'lbs.Final installation <br /> torque shall not exceed the lesser of these limiting values. <br /> in.)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 ESl-3750 and ideal Manufacturing Inc. documents foradditional information and requirements_ <br /> v.)Definitions per ESR-3750: <br /> T=Final Installation torque in ft'ibs;the last torque reading taken during pile installation,using,for example,the <br /> torque reading instruments connected to the installation equipment. <br /> K;=Torque correlation factor per£Sit-375O <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:Pa=(T•Kt)/2 <br /> vii.)1 kip=1,000 lbs <br /> L120 ENGINEERING&DESIGN <br />