Klimatkalkyl av bjälklag

Sammanfattning: This thesis is written as the concluding part of the program Bachelor of Science in Building Engineering.   The report details the climate impact of three different types of floor structures in the form of carbon dioxide. A concrete slab, a light weight floor structure and a timber floor cassette. The floor structures build-up and the various constituent materials are studied and then designed with the goal to provide as low of a carbon footprint as possible. The climate impact is calculated based only on the production and extraction of the materials to the respective floors.   A central part of this work was to study how the climate impact of a concrete slab changes depending on the thickness of the slab. This due to how the reinforcement relates to the slab thickness. The calculations show that the concrete slabs should be designed as thin as possible to provide the lowest carbon footprint. Finally the calculated climate impact of each floor structure is compared to each other, which shows that the light weight floor structure has the lowest impact on the environment.   The construction industry are most of the time focused on being as effective as possible and do things as always done. This means that new methods of construction are only rarely realized.   Altogether the three floor structures have different advantages and disadvantages. The conclusion from the work is that with more studies that compare various materials, as well as actual results from buildings where new methods proves profitable while sustainable for the future the construction industry will change.