Temporary Works Design and Permit Submission

All excavation works exceeding 1.5m in depth is required to be submitted to the authority. This is to ensure adequate supports call the temporary works are in place to prevent earth movement due to excavation.

Temporary works design is also know as Geotechnical Building Works (GBW) if the works consist making a tunnel of height or width of more than 2m. Excavation more than 6m to construct or do repair works or to construct a stabilising slope of more than 6m is considered as GBW. Foundation for building of 30 o more stories is also considered as a GBW works.

Requirement for temporary works design is as follows:

  1. Excavation less than 4m from ground requires only one Professional Engineers to design and submit.
  2. Excavation more than 4m and less than 6m will require one Professional Engineer and One Accredited Checker.
  3. Excavation more than 6m but not associated as a GBW will require one Professional Engineer (Geotechnical) and one Accredited Checker (Geotechnical).
  4. Excavation more than 6m and is associated as a GBW will require one Professional Engineer (Geotechnical) and one Accredited Checker (Geotechnical) together with one ST Professional Engineer and One ST Accredited Checker.

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