KHL Group - International Construction

Comments (3)

• I congratulate M/s Pennine and the Contractors Deltaport Constructors Ltd. for the excellent marine densification work executed for the expansion of Vancouver Port using Stone columns. As a Port Engineer of international standing, I would feel interested in knowing the following technical details, if possible, which can be mailed to my e-mail ID: plan41@yahoo.com

  - What is the overburden and the foundation stratum like? If it is soft clay with low shearing strength, what are the Liquid Limit and Plasticity Index encountered?

  - What is the maximum depth of the stone columns?

  - Is there hard rock available at the site? If so, what is the socketing depth?

  - What is the diameter, spacing, sequence and pattern of driving the stone columns?

  - What is the mechanism used to control the lateral underwater drift and maintain verticality of the stone columns?

  - What is the D50 size of the stone used for densification and its shear characteristics?

  - What type of instumentation was used and how is the in situ behavioural pattern being monitored and at what periodicity - considering that the site is subjected to intense seismic activity?

  I shall feel grateful for your kind response to my quesries as noted above.

  Thanks and regards.

  P.L.Narsimham

  Adviser - Ports and Infrastructure Consultancy

  P.L.Narasimhamat 18:18 on 06.11.2008

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• The scheme of underwater stone columns is an unusual one and I congratulate both the designers and constructors for successfully implementing this scheme.As a port and marine facilities designer myself,I would also like to receive the answers to Mr.Narasimham"s queries in addition to my following queries:

  1.Are the stone columns installed below the berth plan area and if so what is scheme for the structural support for the berth deck,i.e. steel or concrete piles?

  2.If steel or concrete piles are used for supporting the berth deck are they installed in between the stone columns?

  3.Could a sketch be provided showing the plan and cross section showing the stone columns and coarse gravel granite back fill and the steel/concrete piles,as this will clarify the scheme?

  I will be grateful for your kind response to my queries and to receive your answers to my queries as well as those raised by Mr.Narasimham.You may kindly send the replies to my e-mail: spj34in@yahoo.co.in

  Thanks and regards,

  S.P.Joshi.

  Consulting Engineer

  S.P.Joshiat 19:04 on 06.11.2008

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• There are two queries posted here.When will the answers be posted here?

  Sudhakar

  S.P.Joshiat 16:55 on 27.11.2008

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