Liccoln WPHB - Section 12 (Welding Costs).pdf

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1、Section12WELDINGCOSTSSECTION12.1ESTIMATINGWELDINGCOSTSPageTheApproachtoCostEstimation.......12.1-1FactorsInvolvedinWeldingCosts......12.1-1TheOperatingFactor.................12.1-2BasicCostingProcedures..............12.1-4ComputingtheWeightofWeldMetal....12.1-7RoughandReadyCostEstimation......12.1

2、-9TheUseofWeldingCostFormulas......12.1-10PrecautionsWhenUsingCostFormulas..12.1-22HowtoDetermineActualValuesforCostFormulaFactors...................12.1-23TheDisciplinaryValueofCostingStudies...........................12.1-24TheDesigner'sRoleinMinimizingWeldCosts............................12.1-2

3、4TheQuestionofNegativeTolerance.....12.1-28ReinforcementsandWeldCosts.........12.1-30ComputerUsageintheWeldingIndustry.12.1-3012.1-1EstimatingWeldingCostsTHEAPPROACHTOCOSTESTIMATIONaccountingpractices.Whereunrealisticfiguresareassigned-say,toweldingspeedsortotheoperatingAllusersofweldingare,attime

4、s,confrontedfactor-thecostformulaswillgiveunrealisticwiththeproblemofhowtodetermineweldingcosts.results.It,thus,behoovesthepersonmakingtheAcostanalysismayberequiredinadvanceofactualcostanalysistoverifythevalidityofhisdatabeforewelding-inwhichcasetheresultswouldconstituteapplyingittoacostformula.Th

5、atsounddatacanacostestimate-orthecostanalysismaybemadebeobtainedisprovedbytheexperienceoflargeafterweldingisinprogressforvariousevaluationcompaniesthat,throughyearsofexperience,areormanagementpurposes.Thereasonsforcostingabletoestimatefigurativelytothecentonrepetitiveweldingarevaried,butmostoftena

6、reto:welding.Also,theabilityofanexperiencedshopprovidedataneededforbiddingonajobforemanto"guess"thecostofajobwithhighcomparetheeconomicsofweldingwithsomeaccuracysuggeststhatsoundjudgmentsaboutothermethodoffabricatingormanufacturingintangiblefactorscanbedeveloped.establishinformationrequiredinmakin

7、gadecisionbetweenalternatedesignsFACTORSINVOLVEDINWELDINGCOSTSevaluateproposedchangesinproceduresBeforeattemptingtocalculateweldingcosts,itcomparetheeconomicadvantagesofcompetingisdesirabletohaveaclearunderstandi