There has been a proliferation of equations proposed to describe the unsaturated shear strength envelope going back 1970s. However, there have limited studies verify suitability one equation over another. Most attempted relate an soil some aspect(s) soil–water characteristic curve (SWCC). Estimation procedures generally focused on using that air-entry value (AEV) as defined by drying (or desorp...

Soil-water characteristic curves (SWCCs) are important in terms of groundwater recharge, agriculture, and soil chemistry. These relationships are also of considerable value in geotechnical and geoenvironmental engineering. Their measurement, however, is difficult, expensive, and time-consuming. Many empirical models have been developed to describe the SWCC. Statistical assessment of soil-water ...

In geotechnical engineering practice, unsupported vertical trenches are typically excavated in unsaturated soils. this case, the variation of shear strength and hydraulic conductivity with respect to soil suction is key information analyze stability an trench. Most models use soil-water characteristic curve (SWCC) as a main tool. Various available determine SWCC, strength, for Scholars or pract...

Abstract A soil water characteristic curve (SWCC) model named as discrete-continuous multimodal van Genuchten with a convenient parameter calibration method is developed to describe the relationship between suction and content of complex pore structure. The modality number N SWCC in proposed can be any positive integer (the so-called or -modal SWCC). unique set parameters determined by combinin...

INTRODUCTION The epidemic of obesity is a multifaceted public health issue. Positive policy and environmental changes are needed to support healthier eating and increased physical activity. METHODS StrongWomen Change Clubs (SWCCs) were developed through an academic-community research partnership between researchers at Cornell University and Tufts University and community partners (cooperative...

Soils with two subcurves of Soil-Water Characteristic Curve (SWCC) (dual porosity soils) might be found within various residual soils. located in different depths have confining pressure. Residual soils are the unsaturated zones due to deep groundwater table. There is a linear correlation between hydraulic properties soil area and that its properties. This study aims examine influence pressure ...

In this article, the modeling of infiltration--induced landslides, in unsaturated soils using radial basis function (RBF) method, is presented. A novel approach based on RBF method proposed to deal with nonlinear hydrological process zone. The first adopted for curve fitting build representation soil water characteristic (SWCC) that corresponds best estimate relationship between volumetric cont...