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6 of 24 <br /> PROJECT NO. SHEET NO. <br /> S210803-3XR <br /> PROJECT 500 Home Place Everett WA 98203 <br /> LONGITUDE SUBJECT Foundation Stabilization/Jacking <br /> ONE TWENTY° <br /> ENGINEERING&DESIGN BY JT DATE 08/07/2021 <br /> Ideal Foundation Systems 2-7/8"$Helical Pile.(0.203-inch wall thickness)-Solt Capacity per ESR-3750 <br /> DIGGA 10K Drive Torque, Torque Correlation Factor, Ultimate Axial Compressive Capacity, Allowable Axial Compressive Capacity, <br /> Head Pressure T K,(Compression? P„=K,*T P,=(F.5•P, <br /> (psi) fft lbsl Cif' (kips) (!rips) <br /> 500 1,740" 9 15.7 7.8 <br /> 600 2,088 9 18.8 9.4 <br /> 700 2,436 9 219 11.0 <br /> 800 2,784 9 25.1 12.5 <br /> 900 3,132 9 28.2 14,1 <br /> 1000 3,480 9 31.3 157 <br /> 1100 3,828 9 34.5 17.2 <br /> 1200 4,176 9 376 18.8 <br /> 1300 4,524 9 40.7 20.4 <br /> 1400 4,872 9 43.8 21.9 <br /> 1500 5,220 9 470 23.5 <br /> 1600 5,568 9 50.1 25.1 <br /> 1700 5,916 9 53.2 26.6 <br /> 1800 6,264 9 56.4 28,2 <br /> 1900 6,612 9 595 29.8 <br /> 2000 6,960 9 62.6 31,3 'See Note vii: <br /> 2100 7,308 9 65.8 32.9 <br /> 2200 7,656 9 68.9 34.5 <br /> 2300 8,004 9 72.0 36.0 <br /> 2385 8,300 9 74.7 37.3 *See Note ii. <br /> i.)DIGGA 10K Drive Headdifferential pressure display to torque output has been pulled from the attached conversion charts provided by DIGGA. <br /> ii.)Per Table SA of ESR-3750 and Ideal Manufacturing Inc.,the maximum installation torque rating of a 2-7/8"0 helical pile(0.203-inch wall thickness)is 8,300 <br /> ft*ibs.Final installation torque shall not exceed this value: <br /> RI.)Piles shall reach a torque that correlates with an allowable capacity that meets or exceeds the maximum allowable load demand as listed in the structural <br /> 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•ibs;the last torque reading taken during pile installation,using,for example,the torque reading <br /> instruments connected to the installation equipment. <br /> K4 Torque correlation factor per ESR-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"1J/2 <br /> vii.)1 kip=1,0001bs <br /> viii.)Per Note 3 of Ideal Group owgNo.:278TFG dated 4/23/20,the ultimate structural capacity for the2 7/8"TRU-FORCE Underpinning Bracket is limited to <br /> 60 kips. <br /> L120 ENGINEERING&DESIGN <br />