site invistigate

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SITE INVESTIGATION

PREPARED BY SARINA

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Site Investigation (SI) is the

exploration or discovery of the ground

conditions to enable engineers to

make informed design decisions.

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OBJECTIVE OF SI

The British Standard Code of Practice BS 5930:1991gives

a list of the objects of site investigation as follows:

1. To assess the general suitability of the siteand environs

for the proposed works

2. To enable an adequate and economic designto be

prepared, including the design of temporary works

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The British Standard Code of Practice BS 5930:1991gives a list of the objects of site investigation as follows:


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3. To plan the best method of construction

4. To determine the changes that may arise in the

ground and environmental conditions, either naturallyor as a result of the works, and the effect of such

changes on the works, and the environment in general

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STAGE OF SI

1. DESK STUDY

2. SITE RECONNAISSANCE

3. DETAILED SITE EXPLORATION AND SAMPLING4. FIELD TEST / IN-SITU TESTING

5. LABORATORY TESTING

6. REPORT

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This is essentially the collection of a wide

variety of information relating to the site.

e.g. maps, drawings; details of existing orhistoric development, local authorityinformation; geological maps, memoirs,

records; details of utilities, services,restrictions, right-of way, ownership ofadjacent property; aerial photograph.

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An early examination of the site by appropriateexperts is most desirable.

eg. Geologist, land surveyor, soils engineer,hydrologist etc.

Information should be collected on the overall

site layout, topography, basic geology; detailsof access, entry and height restrictions

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HOW MANY BH OR OTHER SI METHOD CRITERIA OF TERMINATING BH

FIELD TEST;CRITERIA & FREQUENCY

SAMPLING TYPE; CRITERIA & FREQUENCY REFERENCE NOTE;FOR BUILDING & ROADS

PROJECT

DOCUMENTATION; DRAWINGS

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Projek Jarak

9m)

Kedalaman

Bangunan satu

tingkat

10 - 30 6 -9 m dari dasar asas

Bangunan Multi

Storey

15- 30 2 kali lebar struktur

Lebuh raya 250 -

500

Minimum 1- 1.5m di bawah

subdred

Empangan tanah 40 -80 Minimum 12- 15 m atau 3 m

dalam batuan keras

( No & Depth of Bore hole )

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PROJECT DISTANCE

(m)

DEPTH

Sigle storey 10 - 30 6 -9 m from foundationbase

Multi Storey 15- 30 2 X Structure width

Highway 250 - 500 Minimum 1- 1.5m below

subgred

Soil dam 40 -80 Minimum 12- 15 m atau 3

m in hard rock


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Investigation of detailed geology and sub-surface soil conditions using surface surveys,trial pits, headings, boreholes, sounding,geophysical methods, as appropriate; survey

of groundwater conditions over a significationperiod of time

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MACINTOSH PROBE

CONE PENETRATION TEST, CPT

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SHALLOW EXPLORATION

TRIAL PITS

TRENCH

HAND AUGER

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DEEP EXPLORATION

PENJARAAN TUKUL (PERCUSSION BORING)

PENGGERUDIAN PUTAR (ROTARY DRILLING)

PENGGERUDIAN BASAH (WASH BORING)

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PENS MPEL N

TAK TERGANGGU(UNDISTURBEDSAMPLE)

* KEKUATAN RICIH

* PENGUKUHAN

TERGANGGU

( DISTURBED)

* PENGELASAN TANAH*UJIAN PEMADATAN

HAD-HAD ATTERBERG

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STANDARTD PENETRATION TEST

PLATE BEARING TEST

CONE PENETRATION TEST

VANE SHEAR TEST

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FOR DESCRIPTION, CLASSIFICATION &CORRELATION - COLOUR, MOISTURECONTENT, SG, POROSITY , LL, PL, PI, SL,

PARTICLE SIZE

SHEAR STRENGH TRIAXIAL TEST, DIRECTSHEAR TEST, CONSOLIDATION , PERMEABILITY

TEST

CORROSION pH, SULPHATE & CHLORIDE,SALTS

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Details of geological study, includingstructures, stratigraphy and mapping; resultsof borings, etc., including log, references forsamples and stratigraphy interpretations as

requested; comments and recommendationsrelating to the design and construction of theproposed works; recommendations relatingto further investigating or testing, and toongoing or post-completion monitoring.

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Documents

site invistigate