A_struts 15[cm^2] "Cross section area of the struts"
Depth 0[m] "Excavation depth (parameter)"
E_struts 2e5[MPa] "Young's modulus of the struts"
l_struts 30[m] "Length of struts"
n_struts 40 "Number of struts"
S_struts n_struts*(E_struts*A_struts/l_struts) "Stiffness of the struts"
Stage_1 -4.8[m] "First excavation step, first strut"
Stage_2 -9.3[m] "Second excavation step, second strut"
Stage_3 -14.35[m] "Third excavation step, third strut"
U_max 25[mm] "Allowed wall deflection"
X_stress -24[kPa] "In situ stress, xx-component"
Y_stress -35[kPa] "In situ stress, yy-component"
Z_stress -24[kPa] "In situ stress, zz-component"