Artist impression of condominium
Deep Soil Mixing for foundation of a six storey condominium at Sentosa, Singapore
Client
Cityview Place Holdings Pte Ltd
Main Contractor
Dragages Singapore Pte Ltd
Project Details
Site no : 32/1820/639
Area : 1,100m2
Execution Period
June 2008 to July 2008
Executing Branch
Keller Foundations (SE Asia) Pte Ltd
18 Boon Lay Way
#04-104 Tradehub 21
Singapore 609966
Tel: 6316 8500 Fax: 6316 8652
Email: [email protected]
Web: www.kellerfareast.com
Cityview Place Holdings Pte Ltd is building a luxurious six storey
condominium at Sentosa Cove, Singapore. The condominium is
comprised of two buildings, one built on piles and the other on a
raft foundation.
At the area where raft foundations was proposed, the general soil
profile was 3m of loose sandfill followed by stiff clay of SPT-N
values more than 50. However, at one location, soft clay of up to
8m (SPT-N values less than 5) was present. The presence of the
soft clay would result in unacceptable total and differential
settlements, if left untreated.
Deep Soil Mixing (DSM) was proposed as a ground improvement
solution at the location where soft clay was present. The ground
improvement was designed such that the settlement from the
building (loading up to 180kPa) is within tolerance.
The modified twin-shafts LRB155 capable of mixing two columns
at the same time was mobilized to site. Deep Soil Mixing was
performed to firm layer and the average column lengths are
between 5m to 11m. Coring samples showed that the DSM
columns were able to achieve Unconfined Compressive Strength
(UCS) of average 3 MPa and modulus of 390MPa.
To date, the building had been constructed to six storey and
negligible settlements were recorded.
Artist impression of condominium
Twin Shaft DSM Rig, LRB155
Treatment Area
SEA
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