Situation 1 A sample of soil has the following grain-size characteristics: Size (mm) * SOIL CLASSIFICATION 100 A Percent Passing • TRIANGULAR CLASSIFICATION CHART (by USDA) VSDA = US. Department of Agriculture 10 2.000 100 90 0.075 74 20 Procedure: O ldentrry % of soll components % gravel = *% sond = %Passing20oomm - % Passing o.osomm * , silt 0.05 60 80- 0.005 32 30 70 - Clay 100% - % Passinga.coomm 0.002 15 40 Determine the following: 1. Percentage of silt 2. Classification of the soil using the Triangular Classification Chart. 60 % Passingoosomm - %Passingoc02mm - 0%. %Passang o.coamm * % cloy = 50 50 Silty clay O Plot the % sand, %. silt, and %clay on ther respective aves on the triangular chart by projecting ines pependicular to the axes. O The point of ntersoction of thoso Ines is taken b the appropriate soll classfication. Sandy clay 60 40 Clay loàm oi Silty clay loam 70 30 7 A Sandy clay /loam 80 20 Loàm Silty loam 90 Notes: 10 Loamy Sand sand Sandy loam Sili sol component porticle see (mm) 100 gravel sand >2.000mm 100 90 80 70 60 50 40 30 20 10 S000 mm - 0.0somm Percentage of sand silt acsomm - 0.00amm clay <0.002 mm Percentage of silt Percentage of clay
Situation 1 A sample of soil has the following grain-size characteristics: Size (mm) * SOIL CLASSIFICATION 100 A Percent Passing • TRIANGULAR CLASSIFICATION CHART (by USDA) VSDA = US. Department of Agriculture 10 2.000 100 90 0.075 74 20 Procedure: O ldentrry % of soll components % gravel = *% sond = %Passing20oomm - % Passing o.osomm * , silt 0.05 60 80- 0.005 32 30 70 - Clay 100% - % Passinga.coomm 0.002 15 40 Determine the following: 1. Percentage of silt 2. Classification of the soil using the Triangular Classification Chart. 60 % Passingoosomm - %Passingoc02mm - 0%. %Passang o.coamm * % cloy = 50 50 Silty clay O Plot the % sand, %. silt, and %clay on ther respective aves on the triangular chart by projecting ines pependicular to the axes. O The point of ntersoction of thoso Ines is taken b the appropriate soll classfication. Sandy clay 60 40 Clay loàm oi Silty clay loam 70 30 7 A Sandy clay /loam 80 20 Loàm Silty loam 90 Notes: 10 Loamy Sand sand Sandy loam Sili sol component porticle see (mm) 100 gravel sand >2.000mm 100 90 80 70 60 50 40 30 20 10 S000 mm - 0.0somm Percentage of sand silt acsomm - 0.00amm clay <0.002 mm Percentage of silt Percentage of clay
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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