Seleccionar idioma ▼ Me gu Calculating a material waste factor How to determine a wastage factor to be applied when pricing work. November 29, 2000 Question How can I calculate the correct scrap ratio with panels and be able to get a percentage ratio in order to add on to the pricing of my cabinets? Forum Responses That will vary from shop to shop and job to job. Keeping track of your jobs will be the only way to know. I use Excel for costs tracking, set up a spreadsheet and every job I do, note how many sheets were used and how many square feet of panels were actually needed. Take the difference and divide it by the actual panel square feet. That will be the percentage to add. If you figure you need 291 square feet of panels and use 10 full sheets, you would need to add 10% to 291 to get 320. It’s also good to make notes of each job so you can tell if it was a simple job or all odd sizes for future reference. It may seem like it will take a while to get enough info, but it adds up faster than you think. The last post is on the mark, but needs to put another shot into the Share Home » Knowledge Base » Knowledge Base Article Login Search Entire Site

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7/7/2015 Calculatingamaterialwastefactor

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CalculatingamaterialwastefactorHowtodetermineawastagefactortobeappliedwhenpricingwork.November29,2000

QuestionHowcanIcalculatethecorrectscrapratiowithpanelsandbeabletogetapercentageratioinordertoaddontothepricingofmycabinets?

ForumResponsesThatwillvaryfromshoptoshopandjobtojob.Keepingtrackofyourjobswillbetheonlywaytoknow.IuseExcelforcoststracking,setupaspreadsheetandeveryjobIdo,notehowmanysheetswereusedandhowmanysquarefeetofpanelswereactuallyneeded.Takethedifferenceanddivideitbytheactualpanelsquarefeet.Thatwillbethepercentagetoadd.

Ifyoufigureyouneed291squarefeetofpanelsanduse10fullsheets,youwouldneedtoadd10%to291toget320.

Itsalsogoodtomakenotesofeachjobsoyoucantellifitwasasimplejoboralloddsizesforfuturereference.Itmayseemlikeitwilltakeawhiletogetenoughinfo,butitaddsupfasterthanyouthink.

Thelastpostisonthemark,butneedstoputanothershotintothe

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bullseye.

Youalsoneedtocalculatetheamountoftimetopickupanddisposeofthescrap,andyourtippingfeesbypercentageofscrap.Thosefiguresneedtobeaddedintogetatruescrapratiocost.

Somecompaniesoptoincludethemas"housecleaning"and"disposalfee"ontheirspreadsheet.Evenwiththesecosts,whichthengenerallyfigureintooverhead,youstillneedtohaveatrackingtofindeitheranaverageorapercentagethatyoucanuse.

Ifyou'readdingonapercentagetoyournetmaterialrequirementforcosting,don'tadda"waste"factororyou'llbemakingamistakeIseelotsofguysdo.Ifyourwastefactoris20%,25%,30%,35%,40%,45%,or50%,add26,34,44,55,67,82,and100percentrespectively,toyournetmaterialrequirementtogetyouractualmaterialcosts.

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