Using modular timber structure as a proposal to reduce the carbon footprint in civil engineering.

Construction is responsible for a significant impact on environmental pollution, depending on the source, it is about 40% of global carbon dioxide emissions (Global Alliance for Building and Construction; International Energy Agency 2019). Due to increasing restrictions related to CO2 emissions, every sector, including construction, are obliged to look for solutions that reduce their impact on the environment. At each stage of the LCA analysis of a building, solutions can be sought leading to the reduction of parameters. In the following text, the emphasis is placed on the early stages such as the selection of construction material and the technology of creation. The results of GWP analyses for a small modular building in two structural variants: steel and timber, and the amount of building materials in the building made in traditional and modular technology were compared. Analyses showed a significant reduction in the GWP value due to the use of timber construction.