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The following table gives the variation of the field standard penetration number (№60) in a sand deposit: Depth (m) N60 1.5 6 3.0 14 4.5 14 6.0 19 17 7.5 9.0 23 The groundwater table is located at a depth of 12 m. The dry unit weight of sand from 0 to a depth of 12 m is 17.6 kN/m³. Assume the mean grain size (D 50) of the sand deposit to be about 0.8 mm. Estimate the variation of the relative density with depth for sand. Use the equation N60 (0.23 +0.06/D50) 1.7 1 Dr (%) = 9 σ'o/Pa (Enter your answers to three significant figures.) Depth (m) N60 Dr (%) 1.5 6 3.0 14 4.5 14 6.0 19 7.5 17 9.0 23 0.5 (100)

The following table gives the variation of the field standard penetration number (№60) in a sand deposit: Depth (m) N60 1.5 6 3.0 14 4.5 14 6.0 19 17 7.5 9.0 23 The groundwater table is located at a depth of 12 m. The dry unit weight of sand from 0 to a depth of 12 m is 17.6 kN/m³. Assume the mean grain size (D 50) of the sand deposit to be about 0.8 mm. Estimate the variation of the relative density with depth for sand. Use the equation N60 (0.23 +0.06/D50) 1.7 1 Dr (%) = 9 σ'o/Pa (Enter your answers to three significant figures.) Depth (m) N60 Dr (%) 1.5 6 3.0 14 4.5 14 6.0 19 7.5 17 9.0 23 0.5 (100)

Principles of Foundation Engineering (MindTap Course List)
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 3.14P
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The following table gives the variation of the field standard penetration number (№60) in a sand deposit: Depth (m) N60 1.5 6 3.0 14 4.5 14 6.0 19 17 7.5 9.0 23 The groundwater table is located at a depth of 12 m. The dry unit weight of sand from 0 to a depth of 12 m is 17.6 kN/m³. Assume the mean grain size (D 50) of the sand deposit to be about 0.8 mm. Estimate the variation of the relative density with depth for sand. Use the equation N60 (0.23 +0.06/D50) 1.7 1 Dr (%) = 9 σ'o/Pa (Enter your answers to three significant figures.) Depth (m) N60 Dr (%) 1.5 6 3.0 14 4.5 14 6.0 19 7.5 17 9.0 23 0.5 (100)
Transcribed Image Text:The following table gives the variation of the field standard penetration number (№60) in a sand deposit: Depth (m) N60 1.5 6 3.0 14 4.5 14 6.0 19 17 7.5 9.0 23 The groundwater table is located at a depth of 12 m. The dry unit weight of sand from 0 to a depth of 12 m is 17.6 kN/m³. Assume the mean grain size (D 50) of the sand deposit to be about 0.8 mm. Estimate the variation of the relative density with depth for sand. Use the equation N60 (0.23 +0.06/D50) 1.7 1 Dr (%) = 9 σ'o/Pa (Enter your answers to three significant figures.) Depth (m) N60 Dr (%) 1.5 6 3.0 14 4.5 14 6.0 19 7.5 17 9.0 23 0.5 (100)
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