Getting Started with the CRAVEzero LCC Web Tool
A quick calculation method of life cycle costs of nearly zero energy buildings according to ISO 15686-5:2017
Step 1 – General Information / Energy costsInsert data about the geometry, income, energy demand, design, economic boundary conditions and energy vectors’ prices.One variant of the reference case can be investigated. |
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Step 2 – Construction costsIn this second sheet, aggregated data about construction costs for building elements and building services can be inserted.Maintenance cost as a percentage of the construction cost and the lifespan of the building element must be selected. |
Step 3 – ResultsThe last sheet displays the numerical breakdown of the LCC analysis, together with charts. |
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StructureThe data collection, within the tool, is organized following as a base reference the LCC structure introduced by the Standard ISO 15686-5:2017 (Buildings and constructed assets -- Service life planning -- Part 5: Life-cycle costing). Furthermore, the source used to structure the construction costs is the European Code of Measurement, elaborated by the European Committee of the Construction Economists. Regarding the analysis of maintenance costs of HVAC systems, this is based on standard values from EN 15459:2018, which provides yearly maintenance costs for each element, including operation, repair, and service, as a percentage of the initial construction cost. Lifespan for system replacement is also provided by the norm.The ISO 15686-5:2017 groups the costs as indicated in Table 1: the LCC analysis includes the processes from point 2 to 5, and it deals with the activities connected with the design, construction and operation of the building. End-of-life costs (process 6 in the table) have not been implemented in the tool yet. |
Go to the LCC Webtool |