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Volume :28 Issue : 1 2001
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Performance of a ring raft for antenna tower on cemented sand in Kuwait
Auther : NABIL F. ISMAEL AND HASAN AL-SANAD
Civil Engineering Department, Kuwait University, P. 0. Box 5969, Safat 13060, Kuwait
ABSTRACT
The performance of a 55 m diameter ring shaped raft for the new 370 m high antenna tower in Kuwait is monitored with time by an extensive instrumentation program. The raft is embedded at a depth of 18 m on very dense fine to medium partially cemented sand. Different methods of settlement predictions employed during the design and initial construction stages are compared herein with actual measurements. Most of these methods overestimate the actual settlement. Pore pressures and contact soil pressures beneath the raft were also monitored. Based on the site investigation and the in situ tests carried out, the unique and interesting characteristics of these deposits are presented along with their effect on observed foundation performance. Several problems encountered during the design and construction stages are discussed.
Keywords: Cemented sand; deformation modulus; ring raft; settlement; soil pressure