Effective team working across disciplines is essential to solve the technological and managerial problems associated with construction projects. However, while it is widely accepted that this method of working is critical to the achievement organisational goals, it is a poorly understood process. Generic best practice recipes on how to improve team work in collaborative projects appears to have had limited impact on performance. Unless the realities of implementing and managing such joint endeavours are conceptualised and articulated in a manner that reflects the actual processes and patterns of behaviour, multi-disciplinary team working will remain a poorly understood working model. The goal of this work was to develop a conceptual framework that visualises the real success factors of multi-disciplinary working so that practitioners can apply a new understanding of predictable processes and patterns of behaviours to improve collaborative project outcomes. To achieve this, the project started with an exploration of critical success factors in multi-disciplinary design projects, encompassing extensive interviewing, workshops and a survey followed by a grounded theory (GT) study of collaborative working in six multi-disciplinary design projects. The switch to GT methodology offered possibilities to further probe into the dynamics of multi-disciplinary team working from the perspective of the team members. The findings show that team working in multi-disciplinary design projects can be explained through the social process of informalising. Informalising refers to the strategies practitioners use to cope with the multiple pressures and unforeseen demands that pervade the collaborative design environments. It portrays the relevance of managing of expectations and value-judging to remain effective and efficient in the face of change and uncertainty. These are critical factors that influence the project trajectory and experience of those involved. Alongside these results the work also demonstrates the importance of so called super soft factors such as shared values, creativity and innovation and passion and enthusiasm to achieve positive project outcomes. Overall, recognising that the process of informalising forms an essential part of cultivating collaboration, and hence getting the work done, more attention should be given to understand such activity in today s turbulent and transient project organisations. Knowledge and understanding of this form of emergent and improvisational strategy may enable managers to predict and control patterns of behaviour inherent in the management of collaborative design projects, and positively influence project outcomes in terms of perceived value and profit.

Eftersom samhället ständigt utvecklas och det ställs allt högre krav på snabba lösningar och metoder måste byggbranschen möta detta behov och tänka från ett nytt perspektiv. I denna rapport har vi studerat de mest använda kontraktsformer totalentreprenad, utförandentreprenad och samverkansentreprenad. Samverkansentreprenad är en kontraktsform som inte är lika mycket beprövad som utförandeentreprenad och totalentreprenad. Det finns flera benämningar för samverkansentreprenad såsom partnering och tidig entreprenörmedverkan men dem är alla lika i hur beställaren jobbar med entreprenörer. I stora bygg och anläggningsprojekt med högteknisk komplexitet krävs det hög kompetens inom projektering. Dessa stora och komplexa projekt kan ibland vara problematiska då entreprenören i vissa fall inte har tillräckligt med teknisk kompetens vilket gör att det ofta uppstår stora förluster då ändring, tillägg och avgående arbeten samt andra oväntade händelser uppstår. Detta har fått många att tro på tidig entreprenörsinvolvering som lösningen av detta problem då beställaren kan dra nytta av entreprenörens erfarenheter. Därav syftet i rapporten har varit att undersöka möjligheten att höja effektiviteten samt förbättra ekonomin på ett bygg-och anläggningsprojekt med hjälp av samverkansentreprenad. Detta har gjorts genom litteraturstudier, intervjuer och möten med handledare på Trafikverket vid flertal tillfällen. Det som framkommit av studien om tidig samverkansentreprenad är att projekteringsprocessen blir väldigt lång men uppstarten av projekten blir effektiva. Däremot behöver modellen utvecklas mycket för att uppnå de resultat som efterfrågas. Det största problemet med tidig entreprenörmedverkan är att gemensamt komma överens om ett pris. / Because the society constantly is evolving and higher demand is made on fast solutions and methods therefore the building branch have to adapt and meet these needs and think from a new perspective. In this report we have studied the most common contract forms design plant and turnkey and Collaboration construction. Collaboration construction is a contract form that is not as proven like design plant and turnkey. There are several denominations for Collaboration construction such as partnering and early contractor involvement, they are all equal on how the purchaser is working with the contractor. In big construction and plant projects with high technical complexity it requires high competence in projection. These big projects can sometimes be problematic because the contractor has insufficient technical competence which causes big losses because of changes, additions and outgoing works and also other unexpected events. This has led many to believe that early contractor involvement could be the solutions to this problem since the purchaser could benefit from the contractor’s experience. Therefore, the purpose has been to investigate the opportunities to increase efficiency and improve the economy on a construction/plant project using interaction construction. This has been done through literature studies, interviews and meetings with our supervisor on Trafikverket at several occasions. The conclusion of this report is that early contractor involvement makes the design process very long, but the start-up of the projects become effective. However, this model needs to be developed to achieve the results requested. The biggest problem with early contractor involvement is to jointly agree on a price.