1. Calculate the primary consolidation settlement of the 3-m-thick clay layer (see Figure below) that will result from the load carried by a 1.5-m square footing. The clay is normally consolidated. 1) Use 2:1 method and Simpson's rule for calculation of the average Ao' for the clay layer. 890 KN Dry sand Yary = 15.7 kN/m³ 3 m 1.5 m 3 m 1.5 m 1 Footing size 1.5 mx 1.5 m Groundwater table Ysat = 18.9 kN/m³ Clay Ysat 17.3 kN/m³ = 1.0 LL=40 2 vertical to 1 horizontal Aσ = qxBxL (B+z)(L+z) Foundation B xL 2 vertical to 1 horizontal Ag

1. Calculate the primary consolidation settlement of the 3-m-thick clay layer (see Figure below) that will result from the load carried by a 1.5-m square footing. The clay is normally consolidated. 1) Use 2:1 method and Simpson's rule for calculation of the average Ao' for the clay layer. 890 KN Dry sand Yary = 15.7 kN/m³ 3 m 1.5 m 3 m 1.5 m 1 Footing size 1.5 mx 1.5 m Groundwater table Ysat = 18.9 kN/m³ Clay Ysat 17.3 kN/m³ = 1.0 LL=40 2 vertical to 1 horizontal Aσ = qxBxL (B+z)(L+z) Foundation B xL 2 vertical to 1 horizontal Ag

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter17: Subsoil Exploration

Section: Chapter Questions

Problem 17.10P

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A proposed office building will include a 10 ft x10 ft square, 3 ft deep (the footing height is also 3 feet) spread footing. The normally consolidated clay has the following engineering properties: Ydry = 115.0 pcf $'=24° c'= 90.0 psf Cc/(1+eo) = 0.15 The soil stratum extends to a great depth, and the ground water table is 50 ft below the ground surface. What is the maximum bending moment from the earthquake that this foundation can support? Consider bending moment only about one axis.
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