I följande rapport redovisas en materialuppföljning från ett byggprojekt utfört av Midroc Construction i Växjö. Rapporten redovisar även hur företaget Consultec har tagit fram sina värden för spillprocent i kalkylprogrammet BidCon.

The following report will show an account concerning a material up follow from a construction project completed by Midroc Constriction in Växjö. The report will also explain how Consultec got their amounts for the wastage percent in the calculation program BidCon. The purpose of the study is to compare the calculated material quantities with the total used material quantities from the production. The study will try to show which methods Consultec used to create the wastage percent in BidCon. The method for this study includes interviews and analysis of the BidCon calculation and Midrocs invoices concerning the current construction project. The study shows many different factors that can affect the differences that occur between planed and finished result. The study also shows that it is very important to use right consumption number for different materials in the calculation. The suggested wastage percent from Consultec for the calculation program BidCon is acquired by experience from previous constructions. There are no data or any other up following that Consultec could use to create the wastage percent in BidCon. Since the wastage percent is a fraction of the production and the material costs is the interest low from the construction companies to question these suggested wastage percent from Consultec.