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Table 2 Parameters of anchor cables

From: The deformation of retaining piles and ground surface under various support systems during deep excavation

Layer Horizontal interval (m) Number of steel strand Orifice relative elevation (m) Drilling angle (°) Length of free segment (m) Length of anchoring section (m) Design value (kN) Pre-stressing value (kN)
1 1.20/2.40 6 −1.50 25 30 3 500 300
2 −4.75 25 22 750 450
3 −9.50 20 27 850 510
4 −14.00 15 19 800 480