The purpose of this report is to compare the environmental impact of two alternative ways of manufacturing two different parts of a crane, for HIAB Company. To realize the study it is used the LCA. -The first part of the report is a detailed explanation of what is an LCA. An LCA is a systematic tool that enables the analysis of environmental loads of a product throughout its entire life cycle and the potential impacts of these loads on the environment. The essence of life cycle assessment is the identification, examination, and evaluation of the relevant environmental implications of a material, process, product, or system across its life span from creation to waste or, preferably, to re-creation in the same or another useful form. The LCA will provide the company a new environmental perspective on their manufacturing processes, and help it to choose the most effective process, identifying key environmental issues associated with both alternatives. -The second part is the LCA of the two different ways of manufacturing two different parts of a crane. There are several LCA software tools in the market, but the price of an LCA software tool can be around several thousand Euros and this is the reason that prevented us from carrying out the analysis with any LCA software, so the calculation are made with EXCEL. The studied products are the crane member and the supporting member, so actually are realized two different assessments, that are divided in assessment 1(crane member) and assessment 2 (supporting member). The new designs of both pieces are made with new higher strength steels, with better mechanical properties, therefore the dimensions and weight of the pieces will be reduced, but the company wants to know the environmental impact of them. These assessments are based on public available free resource, because it was impossible to get all the data from the company, so the results are not exactly, but the calculation are made with EXCEL, so is easy to obtain different results only changing the input parameters. After the assessment we can establish the following conclusions. Crane member: The new design is less environmentally friendly due to some elements of the new steel. Supporting member: Every phase analyzed in this study have a less environmental impact in the new design. -The last part of the report is a summary of different LCA software tools and shows an example of what can be done if you have access to an LCA software, the Simapro.