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8of40 <br /> 1A PROJECT NO. SHEET NO. <br /> a <br /> 7� S200803-3 <br /> i2126 Rucker Ave, Everett, WA 98201 <br /> PROJECT <br /> LONGITUDE SUBJECT Foundation Stabilization/Jacking <br /> ONE TWENTY° ZT 11/16/2020 <br /> ENGINEERING&DESIGN BY DATE <br /> Ideal Foundation Systems 2-7/8"Ill Helical Pile(0,203-inch wall thickness)-Soil Capacity per ESR 3750 <br /> D1GGA 6K Drive Head ' Torque Correlation Factor, Ultimate Axial Compressive Allowable A dol Compressive <br /> T'Torque <br /> Pressure K Capacity Capacity <br /> (psi) } Compression;(ft-1) Pa=K T.(kips) Pa=0.5'Pa,(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 22.4 11.2 <br /> 2,797 9. <br /> 90025.2 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 /> 13te 4,040 9 36.4 181 <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 /> m, <br /> 1700 _ " <br /> 5,284 9 47.6 . 23.8 <br /> 1890 5,594 g 50.3, 25.2 <br /> 190 5, 05 9 53.1 26 6 <br /> 2000 6,216 9 55.9 28.0 <br /> MAX 2100 6,527 9 58.7 29.4 S <br /> L)DIGGA 61(Drive Head differential pressure display to torque output has been pulled from the attached conversion charts provided by DIG GA. <br /> it)Per Table 5A of ESR 3750,the maximum installation torque ratite of a 2-718"O helical pile(0..203-inch wall thickness)is 8,300 Ribs_Per ideal <br /> Manufacturing,Inc.,the maximum installation torque rating of a 2-7;/8"`0.helical pile(0.203-inch wall thickness)is 8,000ft lbs.Final installation <br /> torque shall not exceed the lesser of these limiting values. <br /> iii.)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 ESR-3750 <br /> Pa=Ultimate axial compressive capacity(in kips)of helical pile <br /> Pa=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'*K,}/2 <br /> vii_)1 kip=1,000lbs <br /> L120 ENGINEERING&DESIGN <br />