Purpose: Material wastage is a widespread problem in the building sector that affects both the economic and environmental aspects negative. Further research within industrial small house manufacturing is required to develop an information system and investigate the amount of discarded material. Several small house companies use external building contractors which makes it difficult to reduce the amount of waste because the contractors are not economically affected by the amount of material left over. In the case studied there are no guidelines on how the amount of material waste should be fed back and how the small house manufacture should use that kind of experience feedback. There has to be an improved communication between the parties in order to systematically document where the material waste occur and what it depends on.The aim of the essay is to give concrete suggestions on how the experience feedback can be formed between small house companies and building contractors, and how the small house company can adjust their operation method in order to contribute to a reduced amount of material waste. Method: The paper is a qualitative study with litterateur, observation and interview study as applied examinations methods. The observation investigated the company’s working methods. In the literature study, scientific articles within waste, knowledge management and Building Information Modelling (BIM), where studied. These theories where later compared with the interviews, which were designed with a low degree of structuring and higher degree of standardization. Findings: The study presents that poor quality of the material is the most common experienced sources of material waste. Concrete suggestions on how the experience feedback between small house manufacturer and building contractors can be formed is presented, where photo documentation and weighing of the material are two of the alternatives. That information can in a later stage be used to optimize the company’s additional percentage on the material used to prevent the material from running out of the construction site. Implications: The paper results there is a developed system for how deviations for missing material is managed and that there also is a need to introduce it for residual material. Inadequate quality of the material is identified as the largest source of material waste, even calculation errors from quantity take-off are common because it is carried out manually. The additional percentage on material orders is not based on documentation and has potential to be optimized. One way to reduce the amount of material waste is to introduce a wider use of BIM in order to make clash control and quantity take-off. Limitations: The thesis is a case study, but the results can be applied in other small house companies with a similar working procedure. The study is delimited from organizational structures with internal builders, which means that the generalization of the results is decreased. The work is also limited from which incentives that is required to motivate the building contractors to use the suggested methods to return the information. Keywords: Waste, Construction, Knowledge Management, Quantity take-off and BIM.

Logistics and supply chain management in the construction sector is an area with great potential for improvements. Today, a lot of the workers time is spent on non-value adding activities. Research has shown that waste is a large proportion of the total production cost in building projects today. The purpose of this report is to analyze problems concerning logistics in the construction sector. Two of Skanska’s construction projects in Uppsala have been analyzed to identify problems. The goal of the thesis is to suggest solutions regarding logistics that will improve the work environment and efficiency. The result shows that companies would benefit from using smart logistic services like just in time deliveries and third party logistics. Services like this should be used even if the circumstances of the project don’t require it, as they are conducive to a better working environment and heightened effectivity. Recommendations include having well defined routines and selecting a person responsible for receiving deliveries. Communication and cooperation with other parties in the supply chain is also important. Planning and any subsequent follow-ups have to be carried out effectively and efficiently. / Logistik inom byggbranschen är ett område där det finns stora möjlig- heter för förbättringar och effektiviseringar. En stor andel av yrkesarbe- tarnas arbetstid går idag åt till icke värdeskapande aktiviteter. Under- sökningar har visat att endast 50 % av arbetstiden används till effektivt arbete. (Byggchefen, 2006) Det tillsammans med andra former av slöseri leder till stora kostnader. Slöseriet i byggprojekt uppskattas vara så stort som 30-35 % av projektetens produktionskostnad. (Josephson & Saukkoriipi, 2005) Syftet med examensarbetet är att genom intervjuer, enkäter och obser- vationer undersöka logistikproblem inom byggbranschen. Två av Skanskas byggprojekt i Uppsala undersöks i denna rapport för att iden- tifiera problem. Målet med examensarbetet är att ta fram lösningsför- slag som förbättrar arbetsmiljö och effektivitet genom förbättrade lös- ningar kring logistik. Rapporten visar att företag inom byggbranschen bör satsa på utomstå- ende tjänster med smarta logistiklösningar för att förbättra arbetsmiljö och effektivitet. Lösningar som kan användas är behovsstyrda leveran- ser och tredjepartslogistik med tjänster som sampackning, mellanlag- ring och inbärningstjänster. Tjänsterna kan vara bra att använda även då omständigheterna runt projektet ej kräver det eftersom det ger bättre arbetsmiljö och effektivitet. Rekommendationer ges till att ha tydliga rutiner och utse en ansvarig person för mottagning av material. Samarbete och kommunikation med övriga aktörer i försörjningskedjan är viktig. Även planering och upp- följning av denna är nödvändig för att logistiken ska kunna fungera på ett effektivt sätt.