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DIVISION 31 : SUB-SOIL INVESTIGATION WORKS & DIGITAL SURVEY
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1.
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Rotary Method of Drilling
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2.
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Pressuremeter Test
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3.
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Cone Penetration Test (CPT)
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4.
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Downehole Siesmic Testing
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5.
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Detail digital topographic & physical feature survey
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6.
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31.1
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Mobilization and demobilization of boring equipment and man-power: at site (drilling rig comprising drilling pipe, drop hammer, tripod, pulley, chain, wrange, sample collection devices etc tools and plants; tripol for temporary camp, necessary work-force etc) (Once for one site)
Show Breakup
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per site
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14702 |
14692 |
14653 |
14653 |
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7.
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31.10
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Downehole Siesmic Testing- The test is to be conducted in accordance to ASTM D7400-08 to determine the interval velocities (VS & VP) from arrival times of compression (P) and shear (S) seismic waves which are generated near surface and travel down to an array of vertically installed seismic sensors. This item includes the necessary cost for entering all these data & information in necessary tables & graphs and finally furnishing them in the form of standard sub-soil investigation report with CD containing video of sub-soil investigation operation of concerned site duly signed by competent engineer & exploratory office. (Only after written advice from concerned design division/circle)
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8.
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31.10.1
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For first test
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per test
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125541 |
125541 |
125541 |
125541 |
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9.
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31.10.2
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For each consecutive test after first test
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per test
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113283 |
113283 |
113283 |
113283 |
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10.
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31.11
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Mobilization and Demobilization of Heavy CPT Cone Penetrometer Equipments and Personnel Including Setting Out of Heavy CPT Penetrometer This unit rate includes the mobilisation of necessary equipments (tracks, vehicles, excavators, drill rig, CPT equipments, etc.), personnel and materials per staff to the project site for carrying out of the CPT soundings and demobilisation of the same after completion of all field works as per specification and as directed by the Engineer. The Geotechnical Surveyor must provide in the BOQ the number of staff required to perform the works. The site must to be clean after demobilisation. CPT tests shall be performed according to the ASTM D 3441 or ASTM D 5778 (Only after written advice from concerned design division/circle)
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per test
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94392 |
94392 |
94392 |
94392 |
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11.
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31.12
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Realization of CPT Penetrometer Testing This price per linear meter covers the execution of the CPT sounding with a heavy penetrometer (20 tons minimum). This price includes:
- tip and sleeve resistance, the ratio between the two, and lithologic interpretation of each 5 cm interval shall be continuously logged and can usually be printed onsite and submitted in the digital data (Excel sheet) to the client,
- recordings showing the direction of the penetration of the probes and the encountered difficulties/incidents during penetration. (Max depth 35m)
- This item includes the necessary cost for entering all these data & information in necessary tables & graphs and finally furnishing them in the form of standard sub-soil investigation report with CD containing video of sub-soil investigation operation of concerned site duly signed by competent engineer & exploratory office.
(Only after written advice from concerned design division/circle)
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12.
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31.12.1
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Bore hole depth from 0 to 20 m
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per bore hole
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58618 |
58618 |
58618 |
58618 |
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13.
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31.12.2
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Additional charge for bore hole depth above 20.0 m and upto 30.0 m
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meter
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2811 |
2811 |
2811 |
2811 |
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14.
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31.12.3
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Additional charge for bore hole depth above 30.0 m and upto 40.0 m
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meter
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3093 |
3093 |
3093 |
3093 |
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15.
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31.13
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Conducting plate load test as per ASTM D1194 or equivalent standard providing required arrangement of three circular steel plates with minimum thickness of 25 mm and varying in diameter from 305 mm to 762 mm respectively or square steel bearing plates of equivalent area for minimum 50 tons loading capacity of hydraulic or mechanical jack assembly and applying load in 2 cycles with maintainging time interval of each loading increment of not less than 15 minutes. Continue each test until a peak load is reached or until the ratio of load increment to settlement increment reaches a minimum, steady magnitude. If sufficient load is available, continue the test until the total settlement reaches at least 10 percent of the plate diameter, unless a well defined failure load is observed and all other required materials, excavation, protection against collapse, preparation of test pit, calibration of hydrauic jacks with pressure guage (with an error not exceeding ± 2 % of the load increment used ) & dial gauges (an accuracy of at least 0.25 mm.) including plants and equipment, platform for loading & unloading, mobilization, demobilization, hire charge of load testing equipment (joist, jacks and other necessary devices), gunny bags, filling with sand & stiching gunny bags, execution of tests by engineer, data acquisition and preparation of test results in standard forms and other incidental charges as per standard practice and procedures including submission of plate load test report, furnishing all graphs and charts and with CD containing video of sub-soil investigation operation of concerned site, all complete and accepted by the Engineer-in-charge. At least 03 no of tests must be conducted at one site. (Only after written advice from concern design division/circle)
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per test
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90606 |
90343 |
89026 |
89026 |
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16.
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31.13.1
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Per test rate for conducting additional plate load test at the same site after first 03(Three) tests.
Show Breakup
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per test
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28577 |
28278 |
27219 |
27219 |
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17.
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31.13.2
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Additional charge per km (beyond 25 Km) outside Dhaka city (two ways)/any city for mobilization & demobilization
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per km
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232 |
232 |
232 |
232 |
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18.
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31.14
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Carrying out different tests on soil samples in BUET laboratory collected from the sub-soil investigation site accepted by the Engineer-in-Charge. (Only after written advice from concern design division/circle)
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19.
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31.14.1
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Void ratio
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per set of test
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7700 |
7700 |
7700 |
7700 |
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20.
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31.14.2
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Organic matter content
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per set of test
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4500 |
4500 |
4500 |
4500 |
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21.
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31.14.3
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Permeability for cohesive soil
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per set of test
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24000 |
24000 |
24000 |
24000 |
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22.
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31.14.4
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Permeability non-cohesive soil
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per set of test
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9500 |
9500 |
9500 |
9500 |
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23.
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31.14.5
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Consolidation test for cohesive soil
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per set of test
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24000 |
24000 |
24000 |
24000 |
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24.
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31.14.6
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Triaxial shear Test
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25.
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31.14.6.1
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Consolidated undrained triaxial test with pore pressure for cohesive and non co-hesive soil
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per set of test
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52000 |
52000 |
52000 |
52000 |
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26.
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31.14.6.2
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Consolidated undrained triaxial test without pore pressure for cohesive soil
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per set of test
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46000 |
46000 |
46000 |
46000 |
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27.
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31.14.6.3
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Consolidated drained triaxial test
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per set of test
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52000 |
52000 |
52000 |
52000 |
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28.
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31.14.6.4
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Unconsolidated undrained triaxial test without pore pressure
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per set of test
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24000 |
24000 |
24000 |
24000 |
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29.
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31.14.7
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One dimensional swelling / settlement potential of cohesive soil.
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per set of test
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10000 |
10000 |
10000 |
10000 |
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30.
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31.14.8
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Modified proctor compaction test
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per set of test
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20000 |
20000 |
20000 |
20000 |
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31.
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31.15.1
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Mobilization and demobilization of survey equipment and man-power: survey equipment comprising Total Station, RTK-GPS, level machine, Prism with stand, Tripod and others necessary tools & plants, triple for temporary camp and necessary work-force.
Show Breakup
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per site
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11390 |
11390 |
11257 |
11257 |
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32.
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31.15.2
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Detail digital topographic & physical feature survey of project area. The survey will cover the location and alignment of all topographic features inside the project area such as: Boundary, roads, exposed surface drains, walk ways, existing physical features such as trees, structures, exposed utility network etc. Spot land levels of the project area will be surveyed for contouring@ 5 m C/C. GPS should be used for establishing co-ordinate of global axis-Latitude/Longitude. Total station should be used for survey of spot level, detailed physical features etc. Field data shall be processed in GIS or Auto CAD Software. Finally layout map with all topographic and physical features shall be prepared using Auto CAD Software. All data & maps should be Submitted both in hard and soft format in 5(five) copy.
Show Breakup
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per Acre
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14955 |
18494 |
18360 |
18360 |
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33.
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31.2
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Sub - Soil investigation by 100 mm dia percussion wash boring including collecting disturbed and undisturbed soil samples in numbers as required for classification of soil, conducting SPT using auto trip hammer, stratification of layers, analysing physical parameters of soils like Atterberg limits, specific gravity, gain size distribution(by wet seive, hydrometer if required) , ground water table location, direct shear test, unconfined compression test, unit weight(dry/weight), natural moisture content ; C - ф values and other strength parameters to ascertain bearing capacity , skin friction, end bearings etc at every 1.5m intervel as per respective national/international standards and entering all these data & information in necessary tables & graphs and finally furnishing them in the form of standard sub-soil investigation report with CD containing video of sub-soil investigation operation of concerned site duly signed by competent engineer & exploratory office.
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34.
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31.2.1
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Bore hole depth from 0 to 20 m
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per bore hole
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33871 |
33543 |
33276 |
33276 |
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35.
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31.2.2
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Additional charge for bore hole depth above 20.0 m and upto 30.0 m
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meter
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495 |
480 |
479 |
479 |
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36.
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31.2.3
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Additional charge for bore hole depth above 30.0 m and upto 40.0 m
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meter
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540 |
525 |
523 |
523 |
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37.
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31.2.4
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Additional charge for bore hole depth above 40.0 m and upto 50.0 m
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meter
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570 |
553 |
552 |
552 |
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38.
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31.3
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Sub-soil investigation by 100 mm dia wash boring including collecting disturbed and undisturbed soil samples in numbers as required for classification of soil, conducting SPT using auto trip hammer, stratification of layers, and entering all these data & information in necessary tables & graphs, furnishing them in the form of standard sub-soil investigation report duly signed by competent engineer & exploratory office.(Only after written advice from concerned design division/circle)
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39.
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31.3.1
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Bore hole depth from 0 to 20m
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per bore hole
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9968 |
9767 |
9750 |
9750 |
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40.
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31.3.2
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Additional charge for bore hole depth above 20.0 m and upto 30.0 m
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meter
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408 |
394 |
394 |
394 |
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41.
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31.3.3
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Additional charge for bore hole depth above 30.0 m and upto 40.0 m
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meter
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453 |
438 |
437 |
437 |
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42.
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31.3.4
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Additional charge for bore hole depth above 40.0 m and upto 50.0 m
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meter
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482 |
466 |
465 |
465 |
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43.
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31.4
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Added cost per bore hole, if the same is under water by more than 1.5 m in depth
Show Breakup
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per bore hole
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6954 |
6676 |
6425 |
6425 |
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44.
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31.5
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Mobilization and demobilization of boring equipment and man-power: at site (rotary hydraulic drilling rig comprising mud pump, drilling pipe, auto trip hammer, pulley, chain, wrange, sample collection devices (shelby tube, split spoon sampler) etc tools and plants; tripol for temporary camp, necessary work-force etc) (Once for one site) (Only after written advice from concerned design division/circle)
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per site
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25785 |
25785 |
25785 |
25785 |
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45.
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31.6
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Sub - Soil investigation by 100 mm dia rotary wash boring and including collecting disturbed and undisturbed soil samples in numbers as required for classification of soil, conducting SPT using auto trip hammer, stratification of layers, analysing physical parameters of soils like Atterberg limits, specific gravity, gain size distribution(by wet seive, hydrometer if required) , ground water table location, direct shear test, unconfined compression test, unit weight(dry/weight), natural moisture content ; C - ф values and other strength parameters to ascertain bearing capacity , skin friction, end bearings etc at every 1.5m intervel as per respective national/international standards and entering all these data & information in necessary tables & graphs and finally furnishing them in the form of standard sub-soil investigation report with CD containing video of sub-soil investigation operation of concerned site duly signed by competent engineer & exploratory office. (Only after written advice from concerned design division/circle)
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46.
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31.6.1
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Bore hole depth from 0 to 20 m
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per bore hole
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52846 |
52846 |
52846 |
52846 |
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47.
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31.6.2
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Additional charge for bore hole depth above 20.0 m and upto 30.0 m
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meter
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900 |
900 |
900 |
900 |
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48.
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31.6.3
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Additional charge for bore hole depth above 30.0 m and upto 40.0 m
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meter
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1028 |
1028 |
1028 |
1028 |
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49.
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31.6.4
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Additional charge for bore hole depth above 40.0 m and upto 50.0 m
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meter
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1159 |
1159 |
1159 |
1159 |
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50.
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31.7
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Mobilization of pressuremeter test equipments such as Logger, High Pressured Pump, Control Cable, High Pressure Water Tube, High Pressure Hand Pump, Battery, Printer Paper (Only after written advice from concerned design division/circle)
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per site
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8533 |
8533 |
8533 |
8533 |
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51.
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31.8
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Borehole Pressuremeter Test for measuring the elastic properties and stress state in rocks and soils. During measurement pressuremeter probe is inserted into a borehole of diameter from 70 to 90 mm, down to a depth of 50 m, where up to 20 MPa of pressure can be applied on the surrounding rock mass, depending on the soil condition. The result of measurement with pressuremeter, in rocks or soils, is stress - strain curve from which it will be possible to obtain and assess some of the properties in-situ stress state. From the data curve, among other characteristics, it will be possible to determine elastic modulus of rock, reload - unload elastic module, limit of plastic deformation, undrained shear strength, shear modulus and limit pressure. This item includes the necessary cost for entering all these data & information in necessary tables & graphs and finally furnishing them in the form of standard sub-soil investigation report with CD containing video of sub-soil investigation operation of concerned site duly signed by competent engineer & exploratory office. (Only after written advice from concerned design division/circle)
*The test to be conducted in regular geotechnical boreholes.
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per test
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52.
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31.8.1
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For first test
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per test
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31458 |
31458 |
31458 |
31458 |
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53.
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31.8.2
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For each consecutive test after first test
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per test
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25644 |
25644 |
25644 |
25644 |
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54.
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31.9
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Mobilization of downehole siesmic testing equipments such as a hammer weighing 10lb, a wooden Beam of L= 2.40m and B & t = 150mm, Receiver borehole pick with 3D geophones to measure the velocity and travel time of P and S wave inside the borehole and 2nos. 1D Geophone to measure surface velocity of P and S wave. Trigger: Sending signal to control unit to record First Arrival Time (FAT) and velocity of P and S wave.Control and Processing Unit with Laptop (Only after written advice from concerned design division/circle)
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per test
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9734 |
9734 |
9734 |
9734 |
