Location

Arlington, Virginia

Session Start Date

8-11-2008

Session End Date

8-16-2008

Abstract

This paper reports a well-documented case history of a successful Osterberg Cell testing performed on a working pile cast for the foundations of the Princess Tower in Dubai. Princess Tower which is considered as the tallest residential tower in the world (currently being registered with Guiness Book & Records) up to an approximate 5000 tons demonstrating the efficiency of the testing methodology when accompanied by high-quality construction technique. The tower is 107 floors high and contains a combination of luxury apartments, offices, sales outlets, car parking spaces, sports and recreational clubs and hotel suites. The Osterberg load test was carried out on a pile referred as P34 on October 22, 2006. The main objective of this load test was to proof-load the test pile to its maximum test load of 4,950 tons which is 1.5 times the safe working load of 3,300 tons. For this purpose 3x900 tons capacity hydraulic jacks were utilized. The test pile was a 1,500 mm diameter bored pile with a total embedded length of 47.6m below the cut-off level. Eight levels of vibrating wire-type strain gauges comprising three units at each level were also installed on the test pile to measure strains at nominated locations. According to settlement values and the satisfactory cross hole sonic logging results, it was concluded that the tested pile can safely carry the design working load in compression with settlements within the allowable limits.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Sixth Conference

Publisher

Missouri University of Science and Technology

Publication Date

8-11-2008

Document Version

Final Version

Rights

© 2008 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Case History of Osterberg Cell Testing of a Φ1500mm Bored Pile and the Interpretation of the Strain Measurements for Princess Tower, Dubai, U.A.E.

Arlington, Virginia

This paper reports a well-documented case history of a successful Osterberg Cell testing performed on a working pile cast for the foundations of the Princess Tower in Dubai. Princess Tower which is considered as the tallest residential tower in the world (currently being registered with Guiness Book & Records) up to an approximate 5000 tons demonstrating the efficiency of the testing methodology when accompanied by high-quality construction technique. The tower is 107 floors high and contains a combination of luxury apartments, offices, sales outlets, car parking spaces, sports and recreational clubs and hotel suites. The Osterberg load test was carried out on a pile referred as P34 on October 22, 2006. The main objective of this load test was to proof-load the test pile to its maximum test load of 4,950 tons which is 1.5 times the safe working load of 3,300 tons. For this purpose 3x900 tons capacity hydraulic jacks were utilized. The test pile was a 1,500 mm diameter bored pile with a total embedded length of 47.6m below the cut-off level. Eight levels of vibrating wire-type strain gauges comprising three units at each level were also installed on the test pile to measure strains at nominated locations. According to settlement values and the satisfactory cross hole sonic logging results, it was concluded that the tested pile can safely carry the design working load in compression with settlements within the allowable limits.