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This feature is used for
setting NovoLiq preferences and is accessible from toolbar and
also from  Tools4Preferences menu. This page has three
tabs:
Validation
Criteria
In this tab user can apply constraints on some parameters
used during liquefaction assessment.
| 0 < Dr < 100
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Some correlation formulae for relative density (Dr) yield
to invalid results for some SPT blow counts. If this option is
selected, NovoLiq keeps the
correlated Dr between 0 and 100 to be consistent with geotechnical
concept of relative density.
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| 0.4 < Cn < 1.7
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Depth (overburden stress) correction factor for SPT blow
counts, is known to be valid when between 0.4 and 1.7. By selecting
this option, this rule will be applied to the calculated
Cn.
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| 0 < CRR1 < 0.8
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Since most of the curves for Cyclic Resistance Ratio
(CRR) are presented for CRR£0.8, it is recommended to
keep calculated CRR1 is this range. If this option is not selected,
some formulae may result in very large values or even negative
values.
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| Round BDT blow counts ...
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Becker Density Test results can be correlated to
equivalent SPT blow counts (see more details
here); NovoLiq will round the equivalent SPT
blow count to an integer number if this option is
selected.
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| Ignore
lateral spreading when M<8 ...
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If selected, for "Youd 2002" and "Barlett &
Youd 1992" methods only, the post-liquefaction lateral spreading
will be considered ZERO when M<8
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Analysis Methods
In this tab user can set the default methods for
calculating the following parameters:
Magnitude Scaling Factor (MSF) : this factor is used to adjust
the CRR for earthquake magnitudes other than 7.5 and could be
calculated based on different methods as per user's choice (please
read theory for
more details).
Fines Content
Correction : in most of liquefaction analysis methods, CRR
curve is proposed for clean sand (fines content less than 5
percent). If sand contains more fines content, usually field tests
should be corrected before being used for CRR calculations.
Depth Reduction Factor (Rd) : this factor is used for
calculating the CSR calculation and may be chosen from a variety of
methods.
Relative
Density Method: according to Zhang & Robertson (2004)
method, maximum shear strain is calculated based on relative
density of soil. Relative density itself, can be estimated from SPT
blow count. Correlation method used for calculating relative
density can be selected by user.
These settings will be applied to all
analysis.
User Interface
In this tab you can:
-
choose the input/output units system for
NovoLiq user interface and
reports
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choose user
interface language (when available)
-
choose to
check for updates automatically each time the program
starts
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