Designation:F1675−13StandardPracticeforLife-CycleCostAnalysisofPlasticPipeUsedforCulverts,StormSewers,andOtherBuriedConduits1ThisstandardisissuedunderthefixeddesignationF1675;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thispracticeestablishesaprocedureforusinglifecyclecost(LCC)analysistechniquestoevaluatealternativedrainagesystemdesigns,usingplasticpipethatsatisfythesamefunctionalrequirements.1.2TheLCCtechniquemeasuresthepresentvalueofallrelevantcoststoinstall,operate,andmaintainalternativedrainagesystemssuchasengineering,construction,maintenance,rehabilitation,orreplacementoveraspecifiedperiodoftime.Thepracticealsoaccommodatesanyremainingresidualorsalvagevalue.1.3Thedecisionmaker,usingtheresultsoftheLCCanalysis,canthenidentifythealternative(s)withthelowestestimatedtotalcostbasedonthepresentvalueofallcosts.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1OtherStandards:TM-5-802-1EconomicStudiesforMilitaryConstructionDesignApplications(12/86)2FederalOfficeofManagementandBudgetGuidelinesandDiscountRatesforBenefit-CostAnalysisofFederalProgramsandstatedocumentsforguidelinesorrequire-ments32.2ASTMAdjuncts:DiscountFactorTables43.Terminology3.1Definitions:3.1.1commoncosts,n—coststhatarecommontoallalter-nativesinnatureandamount,suchasinitialplanningfeesorfutureannualinspectioncosts.3.1.2discountrate,n—theinvestor’stimevalueofmoney,expressedasapercent,usedtoconvertcostsoccurringatdifferenttimes,toequivalentcostsatacommonpointintime.3.1.3drainageproject,n—aprojecthavingadefinable,functionaldrainagerequirementthatcanbesatisfiedbytwoormo...
