The bearing capacity of a shallow foundation can be defined as the maximum value of the load applied, for which no point of the subsoil reaches failure point (Frolich method) or else for which failure extends to a considerable volume of soil (Prandtl method and successive). Prandtl, has studied the problem of failure of an…
DetailsComputation of settlements induced by the seismic action The computation of settlements induced by the seismic action is affected by significant uncertainties. The values that are obtained applying the procedures described below must be intended only as guidelines. The settlement is considered to be the lowering of the surface level, or, the integral of the…
DetailsIn the technical field it is important to document the works through photographic reports and geo-locate them on the map. The technology we have today allows you to easily get your position in real time. With few economic resources can get smartphones, tablets and PCs, equipped with GPS. Of course in the case of investigations…
DetailsLiquefaction resistance of soil with Liquiter … Simplified procedure for evaluating liquefaction resistance of soils Following disastrous earthquakes that occurred in Alaska and Niigata (Japan in 1964), Seed and Idris (1971) proposed a simplified methodology for assessing the resistance to liquefaction of soils. This methodology has been selected and improved over the years (e.g. Seed,…
DetailsRock masses and software For the rock masses complex formations, geotechnical characterization and modeling is necessary to evaluate the characteristic resistance: the nature, geometry and resistance of discontinuities are important. In addition, it must be specified whether the characteristic resistance refers to discontinuities or to the rock mass. In this respect, we want to give…
DetailsShear check for retaining walls The check sections of the stem and footing of retaining walls are verified to shear without transverse reinforcements to shear (brackets, pins, bent bars) in general for massive structures but also for the purpose to simplify the execution on site. The computation of the shear check is based on the following:…
DetailsSlope stability analysis: The term slope means a portion of the natural slope whose original profile has been modified by artificial interventions relevant with respect to stability. The term landslide refers to a situation of instability affecting natural slopes and involving large volumes of soil. Introduction to stability analysis The resolution of a stability problem requires…
DetailsThe soil reaction coefficient, or Winkler coefficient, is normally referred to as K or KS [kgf/cmc]. In Winkler’s model, the subsurface is characterized by a linear relationship between the failure of a point (s) and the contact pressure (p) at the same point: p = K s K is the “background constant” or “coefficient of…
DetailsSubsidence How to analyze it with Loadcap Latterly, an interesting research paper, entitled “Alternative methods for calculating compaction in sedimentary basins” whose autors are Martiìn-Martìn M. and Robles-Marìn P., was published on Marine and Petroleum Geology. In this paper, the authors propose alternative methods for calculating compaction in sedimentary basin and, in particular, suggest the…
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