Lean vs tradisjonell byggemetode : en evaluering av OiB og Kunnskapssenteret

Abstract

Interrupts and stops has become a big problem within in the construction industry. The productivity has continuously fallen since the mid 90s. It is necessary for the construction sector to raise concern with the productivity and to learn from other sectors. Theorie s from other sectors should be taken into consideration in hope to change the productivity in the construction sector, the goal is to optimise the tools and theories from other sectors. The industry sector has developed a Lean production system that aims to minimize and eliminate all waste in the production industry. The goal is to create something similar within construction. The Toyota Production System has been developed over the last decade and Porsche Consulting have now come up with a similar model for the construction industry to build within tact time. This thesis will look at the study of two projects. One is OiB and the other one is KS. OiB is built after Statsbygg own standards and procedures while KS is built after Lean Management and Porsche tact. A big part of this thesis is the study of the two projects based documents and existing theory giving by Porsche Consulting. The analysis of OiB shows that it what was more contractors than originally planned. Therefore the project had a lot of conf licts related to 20 contractors. The project was lead by hierarchical leading structure, without any further involvement of workers. The project is built upon the the procedures of Statsbygg. The project was built within agreed time and budget. The analysi s of KS shows that the cooperation between the different contractors had a alot of challenges. This was because the two different contractors had different theories about Lean, one was the entrepreneur and the other was the consultant. The production got l ate because the drawings was late, this resulted with further delays within the building. This incident caused a lot of stress, and the lack of experience didnt make it any easier. Majority of people involved in this project used Porsche tact for the very first time . Both of the contractors have lost money on on this project, but the builder contractor got the building done within agreed time and budget. 5 Implementing of new systems gives a lot of challenges, lean is a wide term and all organisations have t heir own way of interpreting it. The gap between the parties in this project caused alot of challenges. Correct use of tact planning claims detailed and massive planning. This needs to be trained on and will become easier with experience. Lean is still in development within the construction industry and further research is needed in order for it to be optimized. This thesis is built on a Lean project. It is recommended that this topic is researched on furthermore in to order generalize and standardize the t heor ies and thought we have foud in this thesis