1. A concrete raft with a dimension of 9 m x 9 m x 0.5 m thick is rested on a deep mixed column-supportedfoundation with an embedment depth of 0.5 m, as shown below. 4 x 4 rows of columns with a diameter of0.75 m and a length of 9 m are installed in uniform soft clay with a spacing of 2.5 m in a square pattern.The soft clay is more than 20 m thick and has a saturated unit weight of 15.6 kN/m³ and a drained modulusof 4.5 MPa and the groundwater is at the surface. The columns have an unconfined compressive strengthof 1.1 MPa and a saturated unit weight of 20 KN/m?. The Poisson's ratio of the soft clay and the columnsare 0.4 and 0.2, respectively. Estimate the settlement of the raft under a vertical load of 16 MN.9 m•0.75 m9 m7.5 m9 m

concrete raft with a dimension of 12m × 12m× 0.5m The 4 × 4 rows ofcolumns with a diameter of 1m and…

1. A concrete raft with a dimension of 9 m x 9 m x 0.5 m thick is rested on a deep mixed column-supported foundation with an embedment depth of 0.5 m, as shown below. 4 x 4 rows of columns with a diameter of 0.75 m and a length of 9 m are installed in uniform soft clay with a spacing of 2.5 m in a square pattern. The soft clay is more than 20 m thick and has a saturated unit weight of 15.6 kN/m² and a drained modulus of 4.5 MPa and the groundwater is at the surface. The columns have an unconfined compressive strength of 1.1 MPa and a saturated unit weight of 20 kŅ/m³. The Poisson's ratio of the soft clay and the columns are 0.4 and 0.2, respectively. Estimate the settlement of the raft under a vertical load of 16 MN. 9 m 0.75 m|

1. A concrete raft with a dimension of 9 m x 9 m x 0.5 m thick is rested on a deep mixed column-supported foundation with an embedment depth of 0.5 m, as shown below. 4 x 4 rows of columns with a diameter of 0.75 m and a length of 9 m are installed in uniform soft clay with a spacing of 2.5 m in a square pattern. The soft clay is more than 20 m thick and has a saturated unit weight of 15.6 kN/m² and a drained modulus of 4.5 MPa and the groundwater is at the surface. The columns have an unconfined compressive strength of 1.1 MPa and a saturated unit weight of 20 kŅ/m³. The Poisson's ratio of the soft clay and the columns are 0.4 and 0.2, respectively. Estimate the settlement of the raft under a vertical load of 16 MN. 9 m 0.75 m|

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter2: Geotechnical Properties Of Soil

Section: Chapter Questions

Problem 2.10P: The soil profile at a site consists of 10 m of gravelly sand underlain by a soft clay layer. The...

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