Quick Design Guide for Screw Piles and Helical Anchors
2019-1-9 · the soil, φ’, that may be used for preliminary design of Screw-Piles and Helical Anchors. The value of Nq in Figure 2 may also be obtained from: Nq = 0.5 (12 x φ’)φ’/54 [1.4] Because the area of the plate is usually small, the contribution of the “width” term of Eq. 1.3 to
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