Modulus of Subsoil Reaction Specified by Dilatometric Test (DMT)
Modulus of subsoil reaction kh [MN/m3] is determined by the following formula:
modulus of subsoil reaction [MN/m3]
characteristic length of the sheeting structure (coefficient of reduction) [1 rm]
Values of coefficient B are depending on the depth of the excavation H [m], constrained modulus MDMT [MPa], and spacing of props.
Graphs for determination of coefficient B (source: , Figure 7, pp. 999)
Monaco, P. and Marchetti, S..: Evaluation of the coefficient of subgrade reaction for design of multi-propped diaphragm walls from DMT moduli. Millpress, Rotterdam, 2004, pp. 993 – 1002, ISBN 90 5966 009 9.