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5 of 6 <br /> Project Name: Foundation Stabilization- Everett Project Number: S240722-2XR <br /> Project Location: 703 Niles Ave, Everett, WA 98201 <br /> Client's Name: R&R Foundation Specialist, LLC <br /> Subject: 2-7/8" 0 Helical Pile - Compression Torque Chart - Digga MM-1OK <br /> Ideal Foundations stems 2-7/8"0 Helical Pile 0.203-inch wall thickness -Soil Capacity er ESR-37SO <br /> DIGGA 1OK Drive Head Torque,T Torque Correlation Factor,Kr Ultimate Axial Compressive Capacity, Allowable Axial Compressive <br /> Pressure(psi) (ft'Ibs) Compression(ft") P„=Kr+T(kips) Capacity, P,=0.5'Pv(kips) <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 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 15.7 <br /> 1100 3,828 9 34.5 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 <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 /> MAX 2300 8,000 9 72.0 36.0 <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 ESR-3750,the maximum installation torque rating of a 2-7/8"0 helical pile(0.203-inch wall thickness)is 8,300 ft'Ibs.Per Ideal Manufacturing,Inc.,the <br /> maximum installation torque rating of a 2-7/8"0 helical pile(0.203-inch wall thickness)is 8,000 ft'Ibs.Final installation 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 structural package,but shall not <br /> 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 instruments connected <br /> to the installation equipment. <br /> Kr=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*Kr)/2 <br /> vii.)1 kip=1,000 Ibs <br />