CODE OF PRACTICE FOR SITE SUPERVISION – Administrative Procedures for Ground Investigation Field Works

Administrative Procedures for Ground Investigation Field Works
ItemProcedureDetailed Requirements
1.Appointment of AP/RSE/RGEAP is required to be appointed as the co-ordinator of the works by the submission of specified Form BA 4. RSE/RGE may also be appointed as necessary. The geotechnical consultant responsible for preparation of the geotechnical content of the future submission of foundation, site formation, excavation or other plans or geotechnical assessments should be involved at this stage and work under the direction of the AP and/or RSE/RGE.
2.Submission of ground investigation plans for approval and consentGround investigation plans, indicating the extent of works to be carried out, are required to be submitted in all cases. In the case within scheduled areas, approval and consent under the Buildings Ordinance will be followed whereas in the non-scheduled areas, approval and consent is not required by virtue of s.41(3) of the BO. Nevertheless the ground investigation plan will be useful for BA’s record and for the assessment of level of supervision required.
3.Submission of Form BA 10 notifying the commencement of workThe RSC(GIFW) is required to submit Form BA 10 which has been signed by the RSC(GIFW) and endorsed by the AP. Form BA 11 and a new Form BA 10 are required if there is a change of contractor during the course of the work.
4.Submission of Site Supervision PlanFor Scheduled Areas A supervision plan is required to be submitted prior to or at the time of consent application for commencement of ground investigation field works. The plan should specify the name of TCPs and CP(Logging) appointed and the frequency of inspection and/or extent of supervision for GIFW.   For Non-Scheduled Areas Prior to or at the same time of submission of Form BA 10, a supervision plan is required to be submitted, specifying the name of TCPs and CP(Logging) appointed and the frequency of inspection and/or extent of supervision for ground investigation field works. No prior approval of the supervision plan is required before the works are commenced. The AP/RGE/RSC should ensure that their TCPs satisfy the qualification and experience requirements specified, and should  notify the BA of any subsequent changes of supervisors.


ItemProcedureDetailed Requirements
5.Submission of Form BA 14 notifying the completion of workForm BA 14 is required to be submitted by the RSC(GIFW), AP and RGE upon completion of the ground investigation field works.
6.Submission of ground investigation reports in support of the approval of foundation, site formation, excavation or other proposals or geotechnical assessmentsThe ground investigation report shall include the following: a certificate from the authorized signatory of the RSC (GIFW) confirming that:the RSC(GIFW) is responsible for the works stated in the report and that the works have been conducted according to GEOGUIDE 2 and 3;the works have been carried out under supervision in accordance with the requirements stipulated and the supervision plan submitted;the logging of samples and preparation of borehole logs in accordance with GEOGUIDE 3 have been carried out by a Competent Person; andthe field density tests and other tests of samples have been conducted by a HOKLAS accredited laboratory.a certificate from the RGE that he has provided supervision in accordance with the requirements stipulated and the supervision plan submitted.copies of the Form BA 10 and BA 14 previously submitted for BD’s information in view of possible time lapse between the completion of ground investigation and the submission of foundation plans etc. for approval; anda proper surveyed record of the boreholes.   The relevant foundation, site formation, excavation or other plans may be disapproved if the ground investigation report is found not acceptable or not including the above information.


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