Introduction to Earthworks.pptx

Introduction to Introduction Earthworks Prepared by: Jojee Yabut

 Topics  T opics 1. Summary 2. Eca!ation "orks #. $ack%&&in' "orks (. Soi& )ompaction *. Soi& )&assi%cation +. ,ua&ity )ontro&

1. Summary 

-e%nition o Terms

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Earthworks / are en'ineerin' works created throu'h the mo!in' or processin' o parts o the earth0s surace in!o&!in' uantities o soi& or unormed rock.

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ST3 4 merican Society or Testin' and 3ateria&

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S5T6 4 merican ssociation o State 5i'hway and Transportation 67cia&s

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3-- 4 3aimum -ry -ensity

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63) 4 6ptimum 3oisture )ontent

Summary continued8 

Earthworks inc&udes8

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Preparin' sub'rades or s&abs on 'rade9 pa!ement9 &awn and 'rasses9 etc..

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Eca!atin' and back%&&in' or bui&din' sub/structures

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Pro!idin' draina'e course or s&ab on 'rade

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Subsurace draina'e or wa&&s and trenches

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Eca!atin' and back%&&in' trenches or mechanica& and e&ectrica& uti&i ties

2. Eca!ation "orks 

3anua& or 3echanica& Eca!ation

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6bser!e Saety at a&& times

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$uried under'round structures or uti&ities

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Eca!ation or $ui&din' sub/structures

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Eca!ation or 3echanica& and E&ectrica& ti&ities

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uthori;ed and nauthori;ed Eca!ation

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-ewaterin'

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Shorin'

#. $ack%&&in' works 

Satisactory Soi&

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nsatisactory Soi&

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$eddin' )ourse

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-raina'e )ourse

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$orrow Soi&

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Sand

(. Soi& )ompaction 

Increases density

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Increases stren'th

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Increases &oad bearin' capacity

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Increases stabi&ity o s&opes and embankment

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-ecreases undesirab&e sett&ement

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-ecreases permeabi&ity

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Aeduces water seepa'e

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Aeduces swe&&in' and shrinka'e

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Brost dama'e

)ompaction "orks continued8 

Cibratory )ompaction

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Impact )ompaction

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Dneadin' )ompaction

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Pressure )ompaction

)ompaction "orks continued8. 

?&&&&&

*. Soi& )&assi%cation  Two

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ST3 - 2(@ 

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3ethods

="9 =P9 =39 S"9 SP9 S38.

S5T6 3 1(*

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