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Jämförelse mellan en träbro och en betongbro: En LCA-analys med fokus på koldioxidutsläpp samt en LCC-analys
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
2011 (Swedish)Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

This report is a thesis for college

engineering program in structural

engineering at Uppsala University and

was commissioned by the Swedish

contractor Svevia. The study aims to

provide an overview of the most

beneficial bridge material from both

environmental and economic point of


The life-cycle analysis covers only

carbon dioxide emissions, since it is

the most spoken of in today’s climate

agenda. Furthermore, this study aims to

highlight which parts, of the system

boundary, that contributes to greater

carbon emissions for the wood- and the

concrete bridge.

The life-cycle cost analysis was

calculated with a lifespan of 40 years

and covers the basic cost of investment,

operating and maintenance, and

decommissioning costs.

The analyzed constructions in this study

are existing projects that are almost

completed. Both bridges were designed to

handle loads up to 60 tons. The wooden

bridge is a precast cross tense flat

bridge while the concrete bridge is an

in situ frame bridge.

Since the analyzed constructions in this

study differ from each other, the

results are presented both as individual

bridges and as a comparison study

between wood and concrete material in

which the functional unit is set to

kgCO2 and kgCO2/unit area. To give the

reader a clearer picture of the

differences in carbon dioxide emissions

an additional calculation was done, with

an adopted traffic area of 144m2 for

both the wooden bridge and the concrete


For the life cycle cost estimation, the

bridges’ individual results and a

comparative analysis were done. For the

comparative analysis between the wooden

and the concrete bridge a common traffic

area of 144 m2 was adopted.

Place, publisher, year, edition, pages
Keyword [sv]
livscykelanalys livscykelkostnad träbro betongbro
National Category
Infrastructure Engineering
URN: urn:nbn:se:uu:diva-183421ISRN: ISRN UTH-EX-B-2011/40OAI: diva2:562738
Educational program
Bachelor Programme in Construction Engineering
Available from: 2012-10-29 Created: 2012-10-25 Last updated: 2012-10-29Bibliographically approved

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