MARINE BOREHOLES ALONG WITH THE SPT TEST AND UDS SAMPLE COLLECTION AT LPG IMPORT FACILITY AT DAHEJ, GUJRAT

Amount

Mobilization and demobilization - Mobilization, demobilization, setting up of jack up barge, drilling rig, other drilling tools and accessories including personnel for carrying out Geotechnical investigation work. No compensation or idle time charges shall be paid to the agency due to any hindrance or obstruction on the site works due to any reasons thereof like local issues, site conditions, advise from any statutory authority, force majeure. The rate includes all the cost towards transportation, permits, liaison, interstate permits or any payment. No separate payment shall be made for set-up or transfer or relocation of equipments to different borehole location.

Vertical Marine bores of 150mm- Drilling 15-20 Boreholes of 150mm diameter boreholes in soil upto 50m depth using open hole rotary drilling rig at the given locations. In case rock is encountered, rock core drilling using diamond bit with double tube NX size core barrel and N type drill rod shall be undertaken. The borehole will be terminated at specified depth below the existing seabed level. The measurements for core recovery, RQD, weathering index, fracture index shall be carried out at site. Rate to include mobilization, demobilization, shifting of equipments and accessories etc. No separate payment would be made if any rock is encountered. The work shall be executed as per the relevant technical, codes, specifications and guidelines and in line with the directions of Client/RITES/consultant.

Conducting standard penetration Test - The standard penetration test shall be conducted in all bore holes as per the general specification suggested by IS/BS code of practice. The test shall be conducted using auto trip SPT set at specified interval of 2.0m at a depth where here is a stratigraphic change, whichever occurs earlier. SPT shall be terminated on recording 100 blows per 30cm or less penetration for three consecutive tests. The disturbed samples obtained from the split spoon sampler shall be visually classified, labeled for identification and preserved for laboratory testing. Rate to include mobilization, demobilization, shifting of equipments and accessories etc. The work shall be executed as per the relevant technical, codes, specifications and guidelines and in line with the directions of Client/RITES/consultant.

Collecting undisturbed soil samples- Undisturbed samples shall be taken at every 1m (wherever possible) especially in cohesive soil using suitable device such split spoon barrel etc to test their physical, chemical and strength properties. Rate to include mobilization, demobilization, shifting of equipments and accessories etc. The work shall be executed as per the relevant technical, codes, specifications and guidelines and in line with the directions of Client/RITES/consultant.

Collecting water and soil samples- Collecting water samples from the borehole as per the directions from the HPCL. Rate to include mobilization, demobilization, shifting of equipments and accessories etc. The work shall be executed as per the relevant technical, codes, specifications and guidelines and in line with the directions of Client/RITES/consultant.

Conducting laboratory test on soil and water samples-The minimum Lab tests to be conducted on soil and water samples collected as each bore hole shall be particle size distribution, atterberg's limit, specific gravity/particle density, bulk density, sedimentation/ hydrometer analysis, chloride content, soluble sulphates, carbonate content, natural moisture content, tri-axial compression test (consolidated un-drained and unconsolidated un-drained), direct shear test etc. Rate to include mobilization, demobilization, shifting of equipments and accessories etc. The work shall be executed as per the relevant technical, codes, specifications and guidelines from the labs certified/suggested by Client and in line with the directions of Client/RITES/consultant.

Final Report- Preparation and submission of factual report during the progress of boring and testing in draft form for comments and subsequent geotechnical investigation report including detailed results of laboratory studies, recommendation for foundation design etc. for comments and incorporating the same and final submission. Rate to include mobilization, demobilization, shifting of equipments and accessories etc. The work shall be executed as per the relevant technical, codes, specifications and guidelines and in line with the directions of Client/RITES/consultant.

Renuka Consultants