Answered: The most widely soil classification…

Engineering

Civil Engineering

The most widely soil classification system that is used for highway and transportation is; O A. AASHTO

Construction Materials, Methods and Techniques (MindTap Course List)

4th Edition

ISBN:9781305086272

Author:William P. Spence, Eva Kultermann

Publisher:William P. Spence, Eva Kultermann

Chapter5: Soils

Section: Chapter Questions

Problem 1RQ

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Concept explainers

Soil classification and characteristics

Soil classification is a method of categorizing soil based on its properties, types, and uses. The motive of soil classification is to arrange various types of soils and divide them into groups for various engineering and agricultural purposes. Soil classification is carried out by various agencies as per their purposes. From an engineering perspective, soil classification is done to find out the suitability of soil for various construction purposes like the construction of dams, foundations, highways, infrastructures, and so on. For engineering purposes, the soil is classified by the following systems:

Question

The most widely soil classification system that is used for highway and transportation is;
O A. AASHTO
O B. RQD
O C. USCS
O D. USDA

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Table 2 British Soil Classification System for Engineering Purposes Soil groups GRAVEL and SAND may be qualified sandy GRAVEL and gravelly SAND. etc., where appropriate Subgroups and laboratory identification Subgroup symbol Fines (% less than 0.06 mm) Group symbol Liquid limit Slightly silty or GW GW clayey GRAVEL G GP GPu GPg O to 5 Silty GRAVEL G-MGWM GPM Clayey GRAVEL G-F G-C GWC GPC 5 to 15 GM GF GC Very silty GRAVEL GML, etc 15 to 35 GCL GCI GCH GCV GCE Very clayey GRAVEL Slightly silty or clayey SAND Sw SW O to 5 SP SPu SPg SWM SPM swc SPC Silty SAND S-M S-F S-C 5 to 15 Clayey SAND Very silty SAND SM SML, ete SF SC 15 to 35 SCL SCI SCH SCV SCE Very clayey SAND MG FG CG Gravelly SILT MLG, etc CLG CIG CHG CVG CÉG Gravelly CLAY 90 MS FS CS Sandy SILT MLS, ete Sandy CLAY CLS, etc SILT (M-SOIL) M F. ML, ete CLAY <35 50 to 70 70 to 90 -90 ORGANIC SOILS Descriptive letter O' suffixed to any group or subgroup symbol Pt PEAT Suos ANIH more than 35% of the material COARSE SOILS less than…
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