Introduction

Evaluation of soil liquefaction hazard is an engineering art requiring judgment and experience in addition to testing and analysis. Important advancements have been made during the past few decades in developing tools to help assessing the potential of soil liquefaction, but still some aspects of the problem remain uncertain. A wide variety of methods from well respected researchers and practitioners have been implemented in NovoLIQ to carry out the soil liquefaction analysis. NovoLIQ has been designed to cover several world-wide known soil liquefaction analysis methods. As part of our policy for respecting our customers, NovoLIQ gives you options for choosing the analysis methods among all available recommended formulas (please see analysis methods for details).

NovoLIQ supports the following field tests for soil liquefaction triggering:

	Standard Penetration Test (SPT)
	Becker Denseness Test (BDT)
	Shear Wave Velocity (Vs)

In addition, you can take advantage of power features for:

	Unlimited soil layers
	Cyclic Resistance Ratio CRR (10 methods)
	Probability of soil liquefaction (Youd and Noble 2001, Cetin et al. 2004)
	Depth (overburden) correction factor Cn for SPT (9 options)

	Several SPT/BDT/Vs corrections (>6 options)
	Direct conversion of Becker Density Test to SPT (2 methods, including friction effect)
	Magnitude Scaling Factor (8 options)
	Fines content correction (2 options)
	Depth Reduction Factor Rd (4 options)
	Relative Density (5 options)
	Assessment of structure surcharge on soil liquefaction

Note: Recently there has been technical discussions (by Dr Boulanger and Dr Idriss, 2010) about the accuracy and reliability of Cetin et al (2004) method. Therefore it is recommended that this method is used with cautious and full understanding of the risks associated.