Hållbar grundläggning : En jämförelsestudie av tre alternativa grundläggningsmetoder med traditionell platta på mark med avseende på bärförmåga och koldioxidutsläpp

Sammanfattning: Climate change due to greenhouse gases is an important challenge the world is facing. In the manufacture of building materials, concrete accounts for about 50% of all greenhouse gas-emissions. A general way of reducing emissions is to replace concrete with other materials with lower climate impact. Replacing concrete in foundations is not entirely straightforward. A foundation needs to be moisture-proof, have the required load-bearing capacity and be an energy-efficient part of a well-insulated climate shell.  When laying foundations, a lot of concrete is used and is often cast as slabs on the ground. The purpose of this study is to evaluate alternative foundations to the traditional slab that have equivalent load-bearing capacity and causes lower emission levels. In this study indoor airventilated crawlspace, Hybrid foundation and Composite foundation are compared with a traditional slab. Calculations of load-bearing capacity are made and set in relation to the level of carbon dioxide each foundation method causes.  The results show that all four foundations have similar load-bearing capacity. The Hybrid foundation accounts for half as much carbon dioxide emissions as a traditional slab and the Composit foundation lies in between. It would be a better choice from an environmental point of view to use these two foundations where possible.