Geotechnical Investigation Offer for Construction of New
SWG Building
offer No. GIo-040618-1-Rev 00
Date: 4/6/2018
CONSTRUCTION OF NEW SWG BUILDING
Offer for Conducting
Geotechnical Investigation
Offer No. GIO-040618-1
Prepared for
HIDROMONTAZA Company
Prepared by
Alia Technical and Engineering Consulting
Hay Alandulus, Libya
Phone: +218914216284
Fax +218217309535
wafik@alia.ly
www.alia.ly
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Geotechnical Investigation Offer for Construction of New
SWG Building
offer No. GIo-040618-1-Rev 00
Date: 4/6/2018
1. GENERAL
This document has been prepared as a financial offer for geotechnical investigation to be
undertaken for Construction of New SWG Building. This offer was prepared up on request of
HIDROMONTAZA Company.
It is understood that the project consists of a concrete-framed building with a total footprint are
of 30 x 15 m, "estimated to be placed on a raft foundation" plus three transformers resting on
a pad foundation with an area of 30 x 8m.
A geotechnical investigation of the project site will be carried out in order to characterize the
materials and conditions which will be encountered during the construction and operation of
the project, their nature, variability, extent and any special requirements to be observed.
The site investigation will be carried out in accordance with ASTM and BS 5930 standards.
Alia will be responsible for the site investigation, laboratory testing, and preparation of factual
and interpretative report.
2. SITE INVESTIGATION
2.1.
SETTING OUT
Prior to commencement of investigation, location of boreholes will be marked on site by the
Alia’s surveyors using hand GPS and agreed with the client’s engineer.
2.2.
EXPLORATION POINTS LOCATIONS
Boreholes will be located within a 0.25 m radius of the positions shown on submitted drawing,
unless otherwise agreed with the Client, (this tolerance in position is intended to allow for any
local obstruction).
2.3.
MINIMUM NUMBER, LOCATION AND DEPTH OF EXPLORATION POINTS
2 boreholes will be located within the area of the concrete-framed building and 1 borehole at
the area of the transformer. The boreholes will be taken to a maximum depth of 8 m below the
existing ground level. The boreholes will be advanced using rotary rig equipped with standard
hummer in order to carry out SPT test. The rock strata will be cored using double-tube core
barrel NQ size. Pentonite-mud will be used during the drilling in order to avoid water loss.
SAMPLING REQUIREMENTS
Split spoon samples will be obtained at 1.0 m intervals or when changes in material are
encountered. Split spoon samples are generally “disturbed” when obtained and thus are not
suitable for laboratory determination of strength or consolidation parameters. Undisturbed
Shelby tube samples will be obtained at 1.5 m intervals when working with cohesive soils. For
cohesive soil greater than 10 m in depth, Shelby tube sample intervals can be increased to 3
m.
Split spoon samples must be carefully sealed in plastic bags and placed in jars before being
sent to the laboratory for analysis. Shelby tube samples must be sealed and stored upright in
a shockproof container for transportation to the laboratory.
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Geotechnical Investigation Offer for Construction of New
SWG Building
offer No. GIo-040618-1-Rev 00
Date: 4/6/2018
Standard penetration test (SPT) data will be recorded for each boring in accordance with
ASTM D 1586 and placed in the drill log. The drill crew will also continuously perform a rough
visual analysis of soil samples and record their observations in the drill log.
The water level in each borehole will be recorded along with data on when the observation
was made. An erroneous indication of water level may result when water is used as a drilling
fluid and adequate time is not allowed after hole completion for the water level to stabilize. In
clay soils, one week or more is required before an accurate reading can be obtained.
The drilling work and sampling will comply with the following ASTM standards:
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D1452.
D1586:
D1587:
D2113:
D2487:
D2488.
D4220:
D5079:
Soil Investigation and Sampling by Augers
Penetration Test and Split Barrel Sampling of Soil.
Thin Wall Tube Sampling of Soils.
Diamond Core Drilling for Site Investigation.
Classification of Soils for Engineering Purposes.
Description and Classification of Soils (Visual-Manual Procedure)
Preserving and Transporting Soil Samples.
Preserving and Transporting Rock Core Samples.
3. LABORATORY TESTING
As a minimum, the laboratory tests shall show the following information:
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Moisture content. (ASTM D2216)
Soil grain size distribution. (ASTM D422)
Atterberg limits. (ASTM D4318)
Soil chemical analysis. (BS 1377-3)
Direct shear test if required. (ASTM D3080)
One-dimensional consolidation test for cohesive soil (ASTM D 2435)
Collapse potential test for cohesive soil (ASTM D 2435 or ASTM D 4546).
One-dimensional swell test for cohesive soil (ASTM D 4546)
Rock point load. (ASTM D 5731)
Unconfined compressive strength of rock core (ASTM D7012)
The estimated number of tests is shown in the table 2. The actual quantities will depend on
the actual ground condition met on site.
4. GEOTECHNICAL REPORTING
The geotechnical engineering report, needed for the detail engineering phase, shall be
indicated the following data about subsurface conditions, design parameters and foundations
recommendations:
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An introduction to describe the project to which the report applies, to the extent that it
has been defined. The introduction shall also include description of the existing site,
including the local geology, surficial features and existing facilities in the immediate
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Geotechnical Investigation Offer for Construction of New
SWG Building
offer No. GIo-040618-1-Rev 00
Date: 4/6/2018
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vicinity of the site
A general description of the subsurface investigation, including the sampling methods
and number and type of samples and in-situ/laboratory testing, including corrosion
testing. Existing soil borings and associated laboratory test results shall also be
incorporated into the report
A description of subsurface conditions including soil and bedrock stratification, soil and
rock type, groundwater conditions, depth of bedrock, and any unusual conditions such
as presence of loose soils, voids, perched water or contaminated soil
Final typed boring logs and laboratory test results signed by the geotechnical firm’s
professional engineer
Photographs of the on-site drilling equipment, soil and rock sample collection, and rock
cores
Groundwater level at the time of drilling and daily reading of observation wells during
site investigation
Recommend foundation type if necessary (i.e., shallow footings versus mat
foundations or piles)
Allowable bearing capacity for footings, raft foundations or pile foundation
Minimum depth of embedment of shallow foundations and corresponding allowable
bearing capacity
Estimate of foundation settlement
Coefficient of subgrade reaction for slab on grade and mat foundations (Derived from
SPT)
Evaluation of liquefaction potential of loose soils below groundwater table.
Site Category for seismic design
Recommendations for reuse of on-site soils
Recommendations on corrosion potential of soil and groundwater on concrete and
steel and remedial measures.
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Geotechnical Investigation Offer for Construction of New
SWG Building
offer No. GIo-040618-1-Rev 00
Date: 4/6/2018
5. BILL OF QUANTITY
Table 1- Field Work
Activities
Total Price,
LYD
LYD
-
1,500.00
1,500.00
24
210.00
5,040.00
Qty
Ls
meter
Mobilization and demobilization
Soil boring and rock coring
Unit Price,
Unit
Subtotal Price
6,540.00
Table 2- Laboratory Work
Laboratory Testing
Unit
Qty
Moisture Content
No.
8
Sand Grain Size Distribution
No.
8
Atterberg Limits
No.
8
Chemical Analysis.
No.
3
Unconfined compressive strength
No.
5
Unit Price,
Total Price,
LYD
LYD
Subtotal Price
Included in table 1
Table 3- Reporting
Reporting
Interpretative Report
Unit
Qty
-
-
Unit Price,
Total Price,
LYD
LYD
3,000.00
3,000.00
Subtotal Price
3,000.00
The total amount of field, lab and desk studies equals 9,540.00 LYD
6. WORK SCHEDULE
The field, lab and desk works will be conducted within 14 working days.
7. PAYMENT CONDITION
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50 % advanced payment in cash
50 % at submission of the final report in cash
8. VALIDITY
This offer is valid for 30 days.
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Geotechnical Investigation Offer for Construction of New
SWG Building
offer No. GIo-040618-1-Rev 00
Date: 4/6/2018
9. CLIENT RESPONSIBILITIES
The Client will be responsible for the following:
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Road access to the exploration point if needed
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Work permits if required
Best Regards
Wafik Alhaji
Executive
Alia Engineering and Technical Consulting
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