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<br /> Pi- OJECT NO. SHEET NO.
<br /> S200831-1
<br /> PROJECT 4514 Seahurst Ave, Everett, WA 98203
<br /> LONGITUDE SUBJECT Foundation Stabilization/Jacking
<br /> ONE TWENTY ZT 11/20/2020
<br /> ENGINEERING&DESIGN BY ZT
<br /> ideal Foundation Systems 2-7/8"ONelkai Pile(0.203-inch wall thickness)-Soil Capacity per ESR-3750
<br /> DIGGA 10K Drive Torque, Torque Correlation Factor, Ultimate Axial Compressive Capacity, Allowable Axial Compressive Capacity,
<br /> Head Pressure S K,(Compression) P,,=Kc"T P.=0.5`P,,
<br /> (psi (/'t4lbs) {}`i') (kips) (lips)
<br /> 500 1,740 9 15.7 7.8
<br /> 600 2,088 9 18.8 9.4
<br /> 700 2,436 9 21.9 I1.0
<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 15.7
<br /> 1100 3,828 9 34.3 17.2
<br /> 1200 4,176 9 37.6 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 47.0 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' 59.5 29.8 *See Note val.
<br /> 2000 6,960 9 62.6 31..3
<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 Head differential pressure display to torque output has been pulled from the attached conversion charts provided by DIGGA.
<br /> ii.)Per Table 5A of£SR-3750 and Ideal Manufacturing Inc.,the maximum installation torque rating of a 2-7/816 helical pile(0,203-inch wall thickness)is 8,300
<br /> ft.lbs.Final installation torque shall not exceed this value.
<br /> ii.)Piles shall reach a torque that correlates with an allowable capacity that meets orexceeds 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`lbs;the last torque:reading taken during pile installation,using,for example,the torque reading
<br /> Instruments connected to the installation equipment
<br /> IC,...Torque correlation factor per ESR-37S0
<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 /> vi).)1 kip=1,000lbs
<br /> viii.)Per Note 3 of ideal Group Dwg No.:278TFG dated 4/23/20,the ultimate structural capacity for the 2 7/8"TRU-FORCE Underpinning&rocket is limited to
<br /> 60 kips.
<br /> L120 ENGINEERING&DESIGN
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