基本信息
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EXCAVATIONandBASEMENTCONSTRUCTION

Introduction

Ingeneral,excavationmeanstoloosenand.takeoutmaterialsleavingspaceaboveorbelow

ground.Sometimesincivilengineeringtermearthworkisusedwhichincludebackfilling

withnewororiginalmaterialstovoids,spreadinga