geolysis.soil_classifier

CLASS	DESCRIPTION
`AtterbergLimits`	Represents the water contents at which soil changes from one state
`PSD`	Quantitative proportions by mass of various sizes of particles
`AASHTO`	American Association of State Highway and Transportation
`USCS`	Unified Soil Classification System (USCS).

FUNCTION	DESCRIPTION
`create_aashto_classifier`	A helper function that encapsulates the creation of a AASHTO
`create_uscs_classifier`	A helper function that encapsulates the creation of a USCS

`SizeDistError`

Bases: ZeroDivisionError

Exception raised when size distribution is not provided.

`USCSSymbol`

Bases: _Clf

Unified Soil Classification System (USCS) symbols and descriptions.

Each member represents a USCS soil type, grading, or plasticity symbol. Aliases are provided where applicable.

ATTRIBUTE	DESCRIPTION
`G`	Gravel
`S`	Sand
`M`	Silt
`C`	Clay
`O`	Organic soil
`W`	Well graded
`P`	Poorly graded
`L`	Low plasticity
`H`	High plasticity
`GW`	Well graded gravels
`GP`	Poorly graded gravels
`GM`	Silty gravels
`GC`	Clayey gravels
`GM_GC`	Gravelly clayey silt
`GW_GM`	Well graded gravel with silt
`GP_GM`	Poorly graded gravel with silt
`GW_GC`	Well graded gravel with clay
`GP_GC`	Poorly graded gravel with clay
`SW`	Well graded sands
`SP`	Poorly graded sands
`SM`	Silty sands
`SC`	Clayey sands
`SM_SC`	Sandy clayey silt
`SW_SM`	Well graded sand with silt
`SP_SM`	Poorly graded sand with silt
`SW_SC`	Well graded sand with clay
`SP_SC`	Poorly graded sand with clay
`ML`	Inorganic silts with low plasticity
`CL`	Inorganic clays with low plasticity
`ML_CL`	Clayey silt with low plasticity
`OL`	Organic clays with low plasticity
`MH`	Inorganic silts with high plasticity
`CH`	Inorganic clays with high plasticity
`OH`	Organic silts with high plasticity
`Pt`	Highly organic soils

`G = ('G', 'Gravel')` `class-attribute` `instance-attribute`

Gravel

`S = ('S', 'Sand')` `class-attribute` `instance-attribute`

Sand

`M = ('M', 'Silt')` `class-attribute` `instance-attribute`

Silt

`C = ('C', 'Clay')` `class-attribute` `instance-attribute`

Clay

`O = ('O', 'Organic')` `class-attribute` `instance-attribute`

Organic soil

`W = ('W', 'Well graded')` `class-attribute` `instance-attribute`

Well graded

`P = ('P', 'Poorly graded')` `class-attribute` `instance-attribute`

Poorly graded

`L = ('L', 'Low plasticity')` `class-attribute` `instance-attribute`

Low plasticity

`H = ('H', 'High plasticity')` `class-attribute` `instance-attribute`

High plasticity

`GW = ('GW', 'Well graded gravels')` `class-attribute` `instance-attribute`

Well graded gravels

`GP = ('GP', 'Poorly graded gravels')` `class-attribute` `instance-attribute`

Poorly graded gravels

`GM = ('GM', 'Silty gravels')` `class-attribute` `instance-attribute`

Silty gravels

`GC = ('GC', 'Clayey gravels')` `class-attribute` `instance-attribute`

Clayey gravels

`GM_GC = ('GM-GC', 'Gravelly clayey silt')` `class-attribute` `instance-attribute`

Gravelly clayey silt

`GW_GM = ('GW-GM', 'Well graded gravel with silt')` `class-attribute` `instance-attribute`

Well graded gravel with silt

`GP_GM = ('GP-GM', 'Poorly graded gravel with silt')` `class-attribute` `instance-attribute`

Poorly graded gravel with silt

`GW_GC = ('GW-GC', 'Well graded gravel with clay')` `class-attribute` `instance-attribute`

Well graded gravel with clay

`GP_GC = ('GP-GC', 'Poorly graded gravel with clay')` `class-attribute` `instance-attribute`

Poorly graded gravel with clay

`SW = ('SW', 'Well graded sands')` `class-attribute` `instance-attribute`

Well graded sands

`SP = ('SP', 'Poorly graded sands')` `class-attribute` `instance-attribute`

Poorly graded sands

`SM = ('SM', 'Silty sands')` `class-attribute` `instance-attribute`

Silty sands

`SC = ('SC', 'Clayey sands')` `class-attribute` `instance-attribute`

Clayey sands

`SM_SC = ('SM-SC', 'Sandy clayey silt')` `class-attribute` `instance-attribute`

Sandy clayey silt

`SW_SM = ('SW-SM', 'Well graded sand with silt')` `class-attribute` `instance-attribute`

Well graded sand with silt

`SP_SM = ('SP-SM', 'Poorly graded sand with silt')` `class-attribute` `instance-attribute`

Poorly graded sand with silt

`SW_SC = ('SW-SC', 'Well graded sand with clay')` `class-attribute` `instance-attribute`

Well graded sand with clay

`SP_SC = ('SP-SC', 'Poorly graded sand with clay')` `class-attribute` `instance-attribute`

Poorly graded sand with clay

`ML = ('ML', 'Inorganic silts with low plasticity')` `class-attribute` `instance-attribute`

Inorganic silts with low plasticity

`CL = ('CL', 'Inorganic clays with low plasticity')` `class-attribute` `instance-attribute`

Inorganic clays with low plasticity

`ML_CL = ('ML-CL', 'Clayey silt with low plasticity')` `class-attribute` `instance-attribute`

Clayey silt with low plasticity

`OL = ('OL', 'Organic clays with low plasticity')` `class-attribute` `instance-attribute`

Organic clays with low plasticity

`MH = ('MH', 'Inorganic silts with high plasticity')` `class-attribute` `instance-attribute`

Inorganic silts with high plasticity

`CH = ('CH', 'Inorganic clays with high plasticity')` `class-attribute` `instance-attribute`

Inorganic clays with high plasticity

`OH = ('OH', 'Organic silts with high plasticity')` `class-attribute` `instance-attribute`

Organic silts with high plasticity

`Pt = ('Pt', 'Highly organic soils')` `class-attribute` `instance-attribute`

Highly organic soils

`AASHTOSymbol`

Bases: _Clf

AASHTO soil classification symbols and descriptions.

Each member represents a standard AASHTO soil class used in pavement and highway engineering.

ATTRIBUTE	DESCRIPTION
`A_1_a`	Stone fragments, gravel, and sand
`A_1_b`	Stone fragments, gravel, and sand
`A_3`	Fine sand
`A_2_4`	Silty or clayey gravel and sand
`A_2_5`	Silty or clayey gravel and sand
`A_2_6`	Silty or clayey gravel and sand
`A_2_7`	Silty or clayey gravel and sand
`A_4`	Silty soils
`A_5`	Silty soils
`A_6`	Clayey soils
`A_7_5`	Clayey soils
`A_7_6`	Clayey soils

`A_1_a = ('A-1-a', 'Stone fragments, gravel, and sand')` `class-attribute` `instance-attribute`

Stone fragments, gravel, and sand

`A_1_b = ('A-1-b', 'Stone fragments, gravel, and sand')` `class-attribute` `instance-attribute`

Stone fragments, gravel, and sand

`A_3 = ('A-3', 'Fine sand')` `class-attribute` `instance-attribute`

Fine sand

`A_2_4 = ('A-2-4', 'Silty or clayey gravel and sand')` `class-attribute` `instance-attribute`

Silty or clayey gravel and sand

`A_2_5 = ('A-2-5', 'Silty or clayey gravel and sand')` `class-attribute` `instance-attribute`

Silty or clayey gravel and sand

`A_2_6 = ('A-2-6', 'Silty or clayey gravel and sand')` `class-attribute` `instance-attribute`

Silty or clayey gravel and sand

`A_2_7 = ('A-2-7', 'Silty or clayey gravel and sand')` `class-attribute` `instance-attribute`

Silty or clayey gravel and sand

`A_4 = ('A-4', 'Silty soils')` `class-attribute` `instance-attribute`

Silty soils

`A_5 = ('A-5', 'Silty soils')` `class-attribute` `instance-attribute`

Silty soils

`A_6 = ('A-6', 'Clayey soils')` `class-attribute` `instance-attribute`

Clayey soils

`A_7_5 = ('A-7-5', 'Clayey soils')` `class-attribute` `instance-attribute`

Clayey soils

`A_7_6 = ('A-7-6', 'Clayey soils')` `class-attribute` `instance-attribute`

Clayey soils

`AtterbergLimits(liquid_limit, plastic_limit)`

Represents the water contents at which soil changes from one state to the other.

PARAMETER	DESCRIPTION
`liquid_limit`	Water content beyond which soils flows under their own weight (%). It can also be defined as the minimum moisture content at which a soil flows upon application of a very small shear force. TYPE: `float`
`plastic_limit`	Water content at which plastic deformation can be initiated (%). It is also the minimum water content at which soil can be rolled into a thread 3mm thick (molded without breaking). TYPE: `float`

METHOD	DESCRIPTION
`above_A_LINE`	Checks if the soil sample is above A-Line.
`limit_plot_in_hatched_zone`	Checks if soil sample plot in the hatched zone on the
`liquidity_index`	Return the liquidity index of the soil.
`consistency_index`	Return the consistency index of the soil.

ATTRIBUTE	DESCRIPTION
`A_LINE`	The `A-line` determines if a soil is clayey or silty.
`liquid_limit`	Water content beyond which soils flows under their own weight (%). TYPE: `float`
`plastic_limit`	Water content at which plastic deformation can be initiated (%). TYPE: `float`
`plasticity_index`	Plasticity index (PI) is the range of water content over which TYPE: `float`
`fine_material_type`	Checks whether the soil is either clay or silt. TYPE: `USCSSymbol`

`A_LINE = __A_LINE()` `class-attribute` `instance-attribute`

The A-line determines if a soil is clayey or silty.

\(A = 0.73(LL - 20.0)\)

`liquid_limit` `property` `writable`

Water content beyond which soils flows under their own weight (%).

`plastic_limit` `property` `writable`

Water content at which plastic deformation can be initiated (%).

`plasticity_index` `property`

Plasticity index (PI) is the range of water content over which the soil remains in the plastic state.

It is also the numerical difference between the liquid limit and plastic limit of the soil.

\[PI = LL - PL\]

`fine_material_type` `property`

Checks whether the soil is either clay or silt.

`above_A_LINE()`

Checks if the soil sample is above A-Line.

`limit_plot_in_hatched_zone()`

Checks if soil sample plot in the hatched zone on the atterberg chart.

`liquidity_index(nmc)`

Return the liquidity index of the soil.

\[I_l = \dfrac{w - PL}{PI} \cdot 100\]

Liquidity index of a soil indicates the nearness of its natural water content to its liquid limit. When the soil is at the plastic limit its liquidity index is zero. Negative values of the liquidity index indicate that the soil is in a hard (desiccated) state. It is also known as Water-Plasticity ratio.

PARAMETER	DESCRIPTION
`nmc`	Moisture contents of the soil in natural condition. TYPE: `float`

`consistency_index(nmc)`

Return the consistency index of the soil.

\[I_c = \dfrac{LL - w}{PI} \cdot 100\]

Consistency index indicates the consistency (firmness) of soil. It shows the nearness of the natural water content of the soil to its plastic limit. When the soil is at the liquid limit, the consistency index is zero. The soil at consistency index of zero will be extremely soft and has negligible shear strength. A soil at a water content equal to the plastic limit has consistency index of 100% indicating that the soil is relatively firm. A consistency index of greater than 100% shows the soil is relatively strong (semi-solid state). A negative value indicate the soil is in the liquid state. It is also known as Relative Consistency.

PARAMETER	DESCRIPTION
`nmc`	Moisture contents of the soil in natural condition. TYPE: `float`

`PSD(fines, sand, d_10=None, d_30=None, d_60=None)`

Quantitative proportions by mass of various sizes of particles present in a soil.

PARAMETER	DESCRIPTION
`fines`	Percentage of fines in soil sample (%) i.e. The percentage of soil sample passing through No. 200 sieve (0.075mm). TYPE: `float`
`sand`	Percentage of sand in soil sample (%). TYPE: `float`
`d_10`	Diameter at which 10% of the soil by weight is finer. TYPE: `float \| None` DEFAULT: `None`
`d_30`	Diameter at which 30% of the soil by weight is finer. TYPE: `float \| None` DEFAULT: `None`
`d_60`	Diameter at which 60% of the soil by weight is finer. TYPE: `float \| None` DEFAULT: `None`

METHOD	DESCRIPTION
`has_particle_sizes`	Checks if soil sample has particle sizes.
`grade`	Return the grade of the soil sample, either well graded or

ATTRIBUTE	DESCRIPTION
`gravel`	Percentage of gravel in soil sample (%).
`coarse_material_type`	Determines whether the soil is either gravel or sand. TYPE: `USCSSymbol`
`coeff_of_curvature`	Coefficient of curvature of soil sample. TYPE: `float`
`coeff_of_uniformity`	Coefficient of uniformity of soil sample. TYPE: `float`

`gravel` `property`

Percentage of gravel in soil sample (%).

`coarse_material_type` `property`

Determines whether the soil is either gravel or sand.

`coeff_of_curvature` `property`

Coefficient of curvature of soil sample.

\[C_c = \dfrac{D^2_{30}}{D_{60} \cdot D_{10}}\]

For the soil to be well graded, the value of \(C_c\) must be between 1 and 3.

`coeff_of_uniformity` `property`

Coefficient of uniformity of soil sample.

\[C_u = \dfrac{D_{60}}{D_{10}}\]

\(C_u\) value greater than 4 to 6 classifies the soil as well graded for gravels and sands respectively. When \(C_u\) is less than 4, it is classified as poorly graded or uniformly graded soil.

Higher values of \(C_u\) indicates that the soil mass consists of soil particles with different size ranges.

`has_particle_sizes()`

Checks if soil sample has particle sizes.

`grade()`

Return the grade of the soil sample, either well graded or poorly graded.

Conditions for a well-graded soil:

\(1 \lt C_c \lt 3\) and \(C_u \ge 4\) (for gravels)
\(1 \lt C_c \lt 3\) and \(C_u \ge 6\) (for sands)

`AASHTO(atterberg_limits, fines)`

American Association of State Highway and Transportation Officials (AASHTO) classification system.

The AASHTO classification system is useful for classifying soils for highways. It categorizes soils for highways based on particle size analysis and plasticity characteristics. It classifies both coarse-grained and fine-grained soils into eight main groups (A1-A7) with subgroups, along with a separate category (A8) for organic soils.

A1 ~ A3 (Granular Materials) \(\le\) 35% pass No. 200 sieve
A4 ~ A7 (Silt-clay Materials) \(\ge\) 36% pass No. 200 sieve
A8 (Organic Materials)

The Group Index (GI) is used to further evaluate soils within a group.

Note

The GI must be mentioned even when it is zero, to indicate that the soil has been classified as per AASHTO system.

\[ GI = (F_{200} - 35)[0.2 + 0.005(LL - 40)] + 0.01(F_{200} - 15)(PI - 10) \]

PARAMETER	DESCRIPTION
`atterberg_limits`	Atterberg limits of soil sample. TYPE: `AtterbergLimits`
`fines`	Percentage of fines in soil sample (%) i.e. The percentage of soil sample passing through No. 200 sieve (0.075mm). TYPE: `float`

METHOD	DESCRIPTION
`group_index`	Return the Group Index (GI) of the soil sample.
`classify`	Return the AASHTO classification of the soil.

ATTRIBUTE	DESCRIPTION
`fines`	Percentage of fines in soil sample (%). TYPE: `float`

`fines` `property` `writable`

Percentage of fines in soil sample (%).

`group_index()`

Return the Group Index (GI) of the soil sample.

`classify()`

Return the AASHTO classification of the soil.

`USCS(atterberg_limits, psd, organic=False)`

Unified Soil Classification System (USCS).

The Unified Soil Classification System, initially developed by Casagrande in 1948 and later modified in 1952, is widely utilized in engineering projects involving soils. It is the most popular system for soil classification and is similar to Casagrande's Classification System. The system relies on particle size analysis and atterberg limits for classification.

In this system, soils are first classified into two categories:

Coarse grained soils: If more than 50% of the soils is retained on No. 200 (0.075 mm) sieve, it is designated as coarse-grained soil.
Fine grained soils: If more than 50% of the soil passes through No. 200 sieve, it is designated as fine-grained soil.

Highly Organic soils are identified by visual inspection. These soils are termed as Peat (\(P_t\)).

PARAMETER	DESCRIPTION
`atterberg_limits`	Atterberg limits of the soil. TYPE: `AtterbergLimits`
`psd`	Particle size distribution of the soil. TYPE: `PSD`
`organic`	Indicates whether soil is organic or not. DEFAULT: `False`

METHOD	DESCRIPTION
`classify`	Return the USCS classification of the soil.

`classify()`

Return the USCS classification of the soil.

`create_aashto_classifier(liquid_limit, plastic_limit, fines)`

A helper function that encapsulates the creation of a AASHTO classifier.

PARAMETER	DESCRIPTION
`liquid_limit`	Water content beyond which soils flows under their own weight (%). It can also be defined as the minimum moisture content at which a soil flows upon application of a very small shear force. TYPE: `float`
`plastic_limit`	Water content at which plastic deformation can be initiated (%). It is also the minimum water content at which soil can be rolled into a thread 3mm thick (molded without breaking). TYPE: `float`
`fines`	Percentage of fines in soil sample (%) i.e. The percentage of soil sample passing through No. 200 sieve (0.075mm). TYPE: `float`

`create_uscs_classifier(liquid_limit, plastic_limit, fines, sand, d_10=None, d_30=None, d_60=None, organic=False)`

A helper function that encapsulates the creation of a USCS classifier.

PARAMETER	DESCRIPTION
`liquid_limit`	Water content beyond which soils flows under their own weight (%). It can also be defined as the minimum moisture content at which a soil flows upon application of a very small shear force. TYPE: `float`
`plastic_limit`	Water content at which plastic deformation can be initiated (%). It is also the minimum water content at which soil can be rolled into a thread 3mm thick. (molded without breaking) TYPE: `float`
`fines`	Percentage of fines in soil sample (%) i.e. The percentage of soil sample passing through No. 200 sieve (0.075mm). TYPE: `float`
`sand`	Percentage of sand in soil sample (%). TYPE: `float`
`d_10`	Diameter at which 10% of the soil by weight is finer. TYPE: `Optional[float]` DEFAULT: `None`
`d_30`	Diameter at which 30% of the soil by weight is finer. TYPE: `Optional[float]` DEFAULT: `None`
`d_60`	Diameter at which 60% of the soil by weight is finer. TYPE: `Optional[float]` DEFAULT: `None`
`organic`	Indicates whether soil is organic or not. TYPE: `bool` DEFAULT: `False`

geolysis.soil_classifier

SizeDistError

USCSSymbol

G = ('G', 'Gravel') class-attribute instance-attribute

S = ('S', 'Sand') class-attribute instance-attribute

M = ('M', 'Silt') class-attribute instance-attribute

C = ('C', 'Clay') class-attribute instance-attribute

O = ('O', 'Organic') class-attribute instance-attribute

W = ('W', 'Well graded') class-attribute instance-attribute

P = ('P', 'Poorly graded') class-attribute instance-attribute

L = ('L', 'Low plasticity') class-attribute instance-attribute

H = ('H', 'High plasticity') class-attribute instance-attribute

GW = ('GW', 'Well graded gravels') class-attribute instance-attribute

GP = ('GP', 'Poorly graded gravels') class-attribute instance-attribute

GM = ('GM', 'Silty gravels') class-attribute instance-attribute

GC = ('GC', 'Clayey gravels') class-attribute instance-attribute

GM_GC = ('GM-GC', 'Gravelly clayey silt') class-attribute instance-attribute

GW_GM = ('GW-GM', 'Well graded gravel with silt') class-attribute instance-attribute

GP_GM = ('GP-GM', 'Poorly graded gravel with silt') class-attribute instance-attribute

GW_GC = ('GW-GC', 'Well graded gravel with clay') class-attribute instance-attribute

GP_GC = ('GP-GC', 'Poorly graded gravel with clay') class-attribute instance-attribute

SW = ('SW', 'Well graded sands') class-attribute instance-attribute

SP = ('SP', 'Poorly graded sands') class-attribute instance-attribute

SM = ('SM', 'Silty sands') class-attribute instance-attribute

SC = ('SC', 'Clayey sands') class-attribute instance-attribute

SM_SC = ('SM-SC', 'Sandy clayey silt') class-attribute instance-attribute

SW_SM = ('SW-SM', 'Well graded sand with silt') class-attribute instance-attribute

SP_SM = ('SP-SM', 'Poorly graded sand with silt') class-attribute instance-attribute

SW_SC = ('SW-SC', 'Well graded sand with clay') class-attribute instance-attribute

SP_SC = ('SP-SC', 'Poorly graded sand with clay') class-attribute instance-attribute

ML = ('ML', 'Inorganic silts with low plasticity') class-attribute instance-attribute

CL = ('CL', 'Inorganic clays with low plasticity') class-attribute instance-attribute

ML_CL = ('ML-CL', 'Clayey silt with low plasticity') class-attribute instance-attribute

OL = ('OL', 'Organic clays with low plasticity') class-attribute instance-attribute

MH = ('MH', 'Inorganic silts with high plasticity') class-attribute instance-attribute

CH = ('CH', 'Inorganic clays with high plasticity') class-attribute instance-attribute

OH = ('OH', 'Organic silts with high plasticity') class-attribute instance-attribute

Pt = ('Pt', 'Highly organic soils') class-attribute instance-attribute

AASHTOSymbol

A_1_a = ('A-1-a', 'Stone fragments, gravel, and sand') class-attribute instance-attribute

A_1_b = ('A-1-b', 'Stone fragments, gravel, and sand') class-attribute instance-attribute

A_3 = ('A-3', 'Fine sand') class-attribute instance-attribute

A_2_4 = ('A-2-4', 'Silty or clayey gravel and sand') class-attribute instance-attribute

A_2_5 = ('A-2-5', 'Silty or clayey gravel and sand') class-attribute instance-attribute

A_2_6 = ('A-2-6', 'Silty or clayey gravel and sand') class-attribute instance-attribute

A_2_7 = ('A-2-7', 'Silty or clayey gravel and sand') class-attribute instance-attribute

A_4 = ('A-4', 'Silty soils') class-attribute instance-attribute

A_5 = ('A-5', 'Silty soils') class-attribute instance-attribute

A_6 = ('A-6', 'Clayey soils') class-attribute instance-attribute

A_7_5 = ('A-7-5', 'Clayey soils') class-attribute instance-attribute

A_7_6 = ('A-7-6', 'Clayey soils') class-attribute instance-attribute

AtterbergLimits(liquid_limit, plastic_limit)

A_LINE = __A_LINE() class-attribute instance-attribute

liquid_limit property writable

plastic_limit property writable

plasticity_index property

fine_material_type property

above_A_LINE()

limit_plot_in_hatched_zone()

liquidity_index(nmc)

consistency_index(nmc)

PSD(fines, sand, d_10=None, d_30=None, d_60=None)

gravel property

coarse_material_type property

coeff_of_curvature property

coeff_of_uniformity property

has_particle_sizes()

grade()

AASHTO(atterberg_limits, fines)

fines property writable

group_index()

classify()

USCS(atterberg_limits, psd, organic=False)

classify()

create_aashto_classifier(liquid_limit, plastic_limit, fines)

create_uscs_classifier(liquid_limit, plastic_limit, fines, sand, d_10=None, d_30=None, d_60=None, organic=False)

`SizeDistError`

`USCSSymbol`

`G = ('G', 'Gravel')` `class-attribute` `instance-attribute`

`S = ('S', 'Sand')` `class-attribute` `instance-attribute`

`M = ('M', 'Silt')` `class-attribute` `instance-attribute`

`C = ('C', 'Clay')` `class-attribute` `instance-attribute`

`O = ('O', 'Organic')` `class-attribute` `instance-attribute`

`W = ('W', 'Well graded')` `class-attribute` `instance-attribute`

`P = ('P', 'Poorly graded')` `class-attribute` `instance-attribute`

`L = ('L', 'Low plasticity')` `class-attribute` `instance-attribute`

`H = ('H', 'High plasticity')` `class-attribute` `instance-attribute`

`GW = ('GW', 'Well graded gravels')` `class-attribute` `instance-attribute`

`GP = ('GP', 'Poorly graded gravels')` `class-attribute` `instance-attribute`

`GM = ('GM', 'Silty gravels')` `class-attribute` `instance-attribute`

`GC = ('GC', 'Clayey gravels')` `class-attribute` `instance-attribute`

`GM_GC = ('GM-GC', 'Gravelly clayey silt')` `class-attribute` `instance-attribute`

`GW_GM = ('GW-GM', 'Well graded gravel with silt')` `class-attribute` `instance-attribute`

`GP_GM = ('GP-GM', 'Poorly graded gravel with silt')` `class-attribute` `instance-attribute`

`GW_GC = ('GW-GC', 'Well graded gravel with clay')` `class-attribute` `instance-attribute`

`GP_GC = ('GP-GC', 'Poorly graded gravel with clay')` `class-attribute` `instance-attribute`

`SW = ('SW', 'Well graded sands')` `class-attribute` `instance-attribute`

`SP = ('SP', 'Poorly graded sands')` `class-attribute` `instance-attribute`

`SM = ('SM', 'Silty sands')` `class-attribute` `instance-attribute`

`SC = ('SC', 'Clayey sands')` `class-attribute` `instance-attribute`

`SM_SC = ('SM-SC', 'Sandy clayey silt')` `class-attribute` `instance-attribute`

`SW_SM = ('SW-SM', 'Well graded sand with silt')` `class-attribute` `instance-attribute`

`SP_SM = ('SP-SM', 'Poorly graded sand with silt')` `class-attribute` `instance-attribute`

`SW_SC = ('SW-SC', 'Well graded sand with clay')` `class-attribute` `instance-attribute`

`SP_SC = ('SP-SC', 'Poorly graded sand with clay')` `class-attribute` `instance-attribute`

`ML = ('ML', 'Inorganic silts with low plasticity')` `class-attribute` `instance-attribute`

`CL = ('CL', 'Inorganic clays with low plasticity')` `class-attribute` `instance-attribute`

`ML_CL = ('ML-CL', 'Clayey silt with low plasticity')` `class-attribute` `instance-attribute`

`OL = ('OL', 'Organic clays with low plasticity')` `class-attribute` `instance-attribute`

`MH = ('MH', 'Inorganic silts with high plasticity')` `class-attribute` `instance-attribute`

`CH = ('CH', 'Inorganic clays with high plasticity')` `class-attribute` `instance-attribute`

`OH = ('OH', 'Organic silts with high plasticity')` `class-attribute` `instance-attribute`

`Pt = ('Pt', 'Highly organic soils')` `class-attribute` `instance-attribute`

`AASHTOSymbol`

`A_1_a = ('A-1-a', 'Stone fragments, gravel, and sand')` `class-attribute` `instance-attribute`

`A_1_b = ('A-1-b', 'Stone fragments, gravel, and sand')` `class-attribute` `instance-attribute`

`A_3 = ('A-3', 'Fine sand')` `class-attribute` `instance-attribute`

`A_2_4 = ('A-2-4', 'Silty or clayey gravel and sand')` `class-attribute` `instance-attribute`

`A_2_5 = ('A-2-5', 'Silty or clayey gravel and sand')` `class-attribute` `instance-attribute`

`A_2_6 = ('A-2-6', 'Silty or clayey gravel and sand')` `class-attribute` `instance-attribute`

`A_2_7 = ('A-2-7', 'Silty or clayey gravel and sand')` `class-attribute` `instance-attribute`

`A_4 = ('A-4', 'Silty soils')` `class-attribute` `instance-attribute`

`A_5 = ('A-5', 'Silty soils')` `class-attribute` `instance-attribute`

`A_6 = ('A-6', 'Clayey soils')` `class-attribute` `instance-attribute`

`A_7_5 = ('A-7-5', 'Clayey soils')` `class-attribute` `instance-attribute`

`A_7_6 = ('A-7-6', 'Clayey soils')` `class-attribute` `instance-attribute`

`AtterbergLimits(liquid_limit, plastic_limit)`

`A_LINE = __A_LINE()` `class-attribute` `instance-attribute`

`liquid_limit` `property` `writable`

`plastic_limit` `property` `writable`

`plasticity_index` `property`

`fine_material_type` `property`

`above_A_LINE()`

`limit_plot_in_hatched_zone()`

`liquidity_index(nmc)`

`consistency_index(nmc)`

`PSD(fines, sand, d_10=None, d_30=None, d_60=None)`

`gravel` `property`

`coarse_material_type` `property`

`coeff_of_curvature` `property`

`coeff_of_uniformity` `property`

`has_particle_sizes()`

`grade()`

`AASHTO(atterberg_limits, fines)`

`fines` `property` `writable`

`group_index()`

`classify()`

`USCS(atterberg_limits, psd, organic=False)`

`classify()`

`create_aashto_classifier(liquid_limit, plastic_limit, fines)`

`create_uscs_classifier(liquid_limit, plastic_limit, fines, sand, d_10=None, d_30=None, d_60=None, organic=False)`