Construction Shortfall And Forensic Investigation On Soft Ground
Numerous construction activities performed on soft ground have undergone various kind of failures. Some of the failures were due to lack of understanding the nature of soft ground, in adequate site investigation data, adaptation of inappropriate type of ground improvement techniques or foundation system . Couple with inadequate desk study carried out to the historical condition of the site, chronological of activities carried out with in the site prior to construction.
Hence coordinated approach required to be execute d for field investigation works with pro per supervision would be the key to prevent any design or construction related failure in the future. This paper addresses some of shortfalls related to design and construction failures in soft ground. As forensic investigation works carried out after failure reveals drastic variation in site investigation (SI) data as compared to SI data used to perform the design works. The importance of S I works were not give an adequate attention during the design stage. Some of measures required to be address ed during design stage will be discussed in the paper.
Carrying out project on soft ground requires careful measures to be undertaken systematic, namely, site selection, existing condition and historical even occurred at the site. Planning for adequate site investigation with suitable adaptation of cross verification of site investigation data, required to be performed. Furthermore, s election of reliable, workable and cost effective solution to be implemented at the site, are vital for any project. Stringent site supervision and quality assurance required to be executed and uphold at all time. With the all mentioned being implemented any potential failures related to construction activities of soft ground can be eliminated.
Selection of site for development in many situation could not be avoided. The wide corridor of soft clay deposit along Malaysian coastal line could not be avoided from development. In the event the site is located within soft clay deposit zone, careful planning measure for site investigation works required to be carried out. Some of the shortfalls or errors identified while handling site investigation (SI) works (i.e. dat a mis interpretation, l ack of supervision during SI carried out, incompetent person to execute the works and location identified for SI works. With all the above mentioned shortfalls, engineers would not able to provide optimize design in which related to cost saving and environmental friendly
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