Da : TheSOIL NAILING: WHERE, WHEN AND WHY A PRACTICAL GUIDE By Thomas J. Tuozzolo, P.E.
"soil nailing system is not recommended if any of the following conditions are present: 1. Urban fills and loose, natural fill material. 2. Soft, cohesive soils that will not provide a high pullout resistance. 3. Highly plastic clays, since they are susceptible to excessive creep. 4. Loose, granular soils with N-values lower than 10 to 15. 5. Soils without any apparent cohesion and with high gravel content. 6. Expansive clays. 7. The presence of groundwater. Groundwater presents a problem with maintaining face stability during the cut between lifts, and must be properly controlled in the construction of a soil nail wall. "
..ma non piangere, Dario
;-)
