A soil sample is analyzed via a sieve analysis and determined to have the following size distribution: 10% sand and 45% silt.a) Identify the soil texture (use the soil texture triangle) and provide its porosity, saturated hydraulic conductivity, and saturated matric head based on Tables 7.1 and 7.2. Based on those parameters calculate the field capacity and wilting point for the soil*.b) Make a plot of the matric head vs. volumetric soil moisture and of the hydraulic conductivity vs. volumetric soil moisture for this soil. TABLE 7.2. AVERAGE BROOKS-COREY PARAMETERSAS A FUNCTION OF SOIL TYPE (CLAPP &HORNBERGER,1978). VALUE SHOWN INPARENTHESES IS THE STANDARD DEVIATION.SOILTYPESandLoamy sandSandy LoamSilt LoamLoamSandy clayloamSilty clayloamClay loamSandy claySilty clayClaySAT.HYDRAULICCONDUC-TIVITY[cm/hr]63.3656.1612.492.592.502.270.610.880.780.370.46SAT.MATRICHEAD[cm]-12.1 (14.3)-9.0 (12.4)-21.8 (31.0)-78.6 (51.2)-47.8 (51.2)-29.9 (37.8)-35.6 (37.8)-63.0 (51.0)-15.3 (17.3)-49.0 (62.1)-40.5 (39.7)BROOKS-COREYPARAMETER4.05 (1.78)4.38 (1.47)4.90 (1.75)5.30 (1.96)5.39 (1.87)7.12 (2.43)7.75 (2.77)8.52 (3.44)10.4 (1.64)10.4 (4.45)11.4 (3.7) TABLE 7.1. AVERAGE POROSITY AS A FUNCTION OFSOIL TYPE (CLAPP & HORNBERGER, 1978). VALUESHOWN IN PARENTHESES IS THE STANDARDDEVIATION.SOIL TYPESandLoamy sandSandy LoamSilt LoamLoamSandy clay loamSilty clay loamClay loamSandy claySilty clayClayPOROSITY0.395 (0.056)0.410 (0.068)0.435 (0.086)0.485 (0.059)0.451 (0.078)0.420 (0.059)0.477 (0.057)0.476 (0.053)0.426 (0.057)0.492 (0.064)0.482 (0.050)

Solution - From soil texture triangle - (a) here, 45% silt , and 10% sand silt…

Identify the soil texture (use the soil texture triangle) and provide its porosity, saturated hydraulic conductivity, and saturated matric head based on Tables 7.1 and 7.2. Based on those parameters calculate the field capacity and wilting point for the soil*.

Identify the soil texture (use the soil texture triangle) and provide its porosity, saturated hydraulic conductivity, and saturated matric head based on Tables 7.1 and 7.2. Based on those parameters calculate the field capacity and wilting point for the soil*.

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter3: Natural Soil Deposits And Subsoil Exploration

Section: Chapter Questions

Problem 3.15P

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