Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System)

Importancia y uso:

5.1 This standard classifies soils from any geographic location into categories representing the results of prescribed laboratory tests to determine the particle-size characteristics, the liquid limit, and the plasticity index.

5.2 The assigning of a group name and symbol(s) along with the descriptive information required in Practice D2488 can be used to describe a soil to aid in the evaluation of its significant properties for engineering use.

5.3 The various groupings of this classification system have been devised to correlate in a general way with the engineering behavior of soils. This standard provides a useful first step in any field or laboratory investigation for geotechnical engineering purposes.

5.4 This standard may also be used as an aid in training personnel in the use of Practice D2488.

5.5 This standard may be used in combination with Practice D4083 when working with frozen soils.

Note 5: Notwithstanding the statements on precision and bias contained in this standard: The precision of this test method is dependent on the competence of the personnel performing it and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing. Users of this test method are cautioned that compliance with Practice D3740 does not in itself assure reliable testing. Reliable testing depends on several factors; Practice D3740 provides a means for evaluating some of those factors.

Subcomité:

D18.07

Referida por:

A0746-18R22, C1675-22, D5567-24, B0789_B0789M-16R21, F3681-24, F3016_F3016M-19, C1479_C1479M-22, C0012-24, A0807_A0807M-19, D6088-06R22, D3839-14R19, D6780_D6780M-19, C1821_C1821M-16R21E01, D4972-19R24E01, D4972-19R24E01, C1924-24, D3550_D3550M-17, D2488-17E01, E2992_E2992M-24, D2321-20, D2168-10R18, B0788_B0788M-09R20, D2774-21A, F0449-20R24, B0790_B0790M-16R21, D7277-16R23, D5784_D5784M-18, D4221-18, D8459-23, D1452_D1452M-24, D6467-21E01, D8204-18R22, D6572-21, E2583-07R20, D6243_D6243M-20, F2787-13R18, D5321_D5321M-21, D1140-17, D7181-20, A0798_A0798M-22, D2435_D2435M-11R20, D0653-24A, D1883-21, D4254-16, D8298_D8298M-23, D0420-18, D4253-16E01, D6938-23, D4318-17E01, D2434-22, D7663-12R24, D8153-22, D7664-10R18E01, F1668-16R22, D0854-23, E3281-21A, D4318-17E01, D1883-21, D4546-21, D4647_D4647M-13R20, D6066_D6066M-24, D7263-21, D2850-24, D1586_D1586M-18E01, D8296-19, D7928-21E01, E3268-21, D3080_D3080M-23, E2392_E2392M-24, D5299_D5299M-18, D0698-12R21, D8167_D8167M-23E01, D1557-12R21, A0796_A0796M-21, D7928-21E01, E3163-24, D0698-12R21, D7382-20, D4186_D4186M-20E02, D7263-21, D5092_D5092M-16R24, D6528-24, E2993-23, D4546-21, D7608-18E01, D1557-12R21, D7263-21, D7758-17, D2435_D2435M-11R20, D8297_D8297M-23, D0698-12R21, D6938-23, D6913_D6913M-17, D6913_D6913M-17

Volúmen:

04.08

Número ICS:

93.020 (Earth works. Excavations. Foundation construction. Underground works)

Palabras clave:

Atterberg limits; classification; clay; gradation; gravel; organic soils; particle-size distribution; sand; silt; soil classification; soil tests; USCS;