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INTRODUCTION

Before a civil engineering work is done,adequate site investigation should be ade in

advance!"ufficient inforation necessar# to #ield a safe and econoic design and does lead

to $robles during construction!"ite investigation involves e%$loration of the soil

conditions surface and below the surface!it is $rerequisite for designed to ensure a structure

or earthwork running good and econoical as far as $ossible!Inforation fro site

investigation of the actual soil conditions a# result in serious daage to the structure to

the built later!

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OB&'CTI('

• To identif# whether the site suitable for works that in suggest

• To enable one designs that is safe and econoic

• To $redict and taking a$$ro$riate easure to overcoe an# co$le%it# which

ight arose during construction that due to soil conditions and locali)ed state others

• To investigate incident or reason occurrence of state change whether innatel# or due

to different sub*ect!

T+'OR

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-or $ur$ose of calculation the gruff design of the $ur$osed $ilot or an engineering

 $ro*ect,the $ro$erties of the soil under consideration is usuall# based on data obtained fro

test conduted in the laborator# on soil sa$les taken during the re$resentative investigation

work!-ield and the t#$e of qualit# site investigation work is i$ortant and will onl# be

deterined after taking the laborator# test!The result of the investigation should include the

sa$le si)e qualit# and frequenc# of sa$ling!

.eotechnical engineers $erfor geotechnical investigations to obtain inforation on the

 $h#sical $ro$erties of soil and rock underl#ing /and soeties ad*acent to 0 a site to design

earthworks and foundations for $ro$osed structures,and for re$air of distress to earthworks

and structures caused b# subsurface conditions!1 geotechnical investigation will include

surface e%$loration and subsurface e%$loration of a site!"oeties,geo$h#sical ethods

are used to obtain data about sites!"ubsurface e%$loration usuall# involves in2situ testing

/two coon e%a$les of in2situ tests are the standard $enetration test and cone

 $enetration test!In addition site investigation will often include subsurface sa$ling and

laborator# testing of the soil sa$les retrieved!The digging of test $its and trenching

/$articularl# for locating faults and slide $lanes0 a# also be used to learn about soilconditions at de$th!3arge diaeter borings are rarel# used due to safet# concerns and

e%$ense,but are soeties used to allow a geologist or engineer to be towered into the

 borehole for direct visual and anual e%aination of the soil and rock tratigra$h#!

1 variet# of soil sa$lers e%ist to eet the needs of different engineering $ro*ects!The

standard $enetration test /"4T0,which uses a thick2walled s$lit s$oon sa$ler,is the ost

coon wa# to collect disturbed sa$les!4iston sa$lers,e$lo#ing a thin2walled

tube,are ost coonl# used for the collection of less disturbed sa$lers!5ore advancedethods,such as ground free)ing and the "herbrooke block sa$ler,are su$erior,but even

ore e%$ensive!

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51T'RI1361441R1TU"

+and auger 

The weights

Tare

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DI"CU""ION

Based on that results,this soil unsuitable for construction because given the level of oist

soil!Readings of the wet soil higher than the reading of the dr# land!This $roves this land

unsuitable for construction!

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CONC3U"ION

In conclusion,land research is an i$ortant as$ect in a civil engineering construction

 $ro*ect!It is one $recautionar# easure in a $ro*ect which will in anaging,this is to avoid

occurrence of crack in wall,break in floor,settle into soil and others incident that is

likel#!3and research was to get inforation on soil conditions and enable design that is

sufficient can in $re$are also identif# an# inconvenience that will be eerging during

construction and the ethod of solution!-or safet# of building and the resident,b# search

details ust be carried out to know clearl# land incident essential $ro$erties!

In $ractical that carried out this can be concluded that land have huidit# de$ends on

weathering condition!3and disturbed ado$t with interference condition that is iniu to

aintain site actual situation!Can be concluded land that have huidit# weight higher than

dr# land!7etland need to be tested before hand to does not ha$$en undiserable thing during

construction carried out!