13.07.2015 Views

Dokumentation og international benchmarking af bygge - Danmarks ...

Dokumentation og international benchmarking af bygge - Danmarks ...

Dokumentation og international benchmarking af bygge - Danmarks ...

SHOW MORE
SHOW LESS
  • No tags were found...

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Construction totalOutput price index for constructionConstruction branchBuildingsCivil engeenering workTypesMajor componentResidential buildings Non-residential buildings Construction of road Construction of tunnelEarthworkElementary componentExcavation of foundationEach standard construction type consists of a number of major componentssuch as earthworks, concrete, masonry, roofing etc. Each majorcomponent comprises of a number of elementary components such asexcavation of foundations, transportation of soil, compacting of sand intrenches etc. For the price collection, the elementary components are definedin details.Major components are defined to facilitate the exact identification of thecontent, supported by appropriate explanations of materials used.The prices are collected for a number of the elementary components or atthe level of major components.Advantages of componentcost methodFor the calculation of an output price index using the component costmethod, the prices are collected for different construction componentsand not only for the completed construction type. This approach is basedon the idea that one completed construction type is not considered as anindependent unit but as the sum of different phases in its completion.Based on these prices, price indices for each standard component is calculatedand subsequently aggregated into a total index for the respectiveconstruction type.By applying this method for the calculation of indices for buildings, thecomponents remain comparable over time and are more hom<strong>og</strong>eneousthan the whole construction type. It is relatively easy to construct indicesfor different kinds of buildings by changing the weights of each componentonly, because most components are common for different kinds ofbuilding categories. This means that only the construction componentsessential for the specific construction type are priced and compared overtime. These construction components have an indicative function i.e. thatthey represent the price development of similar construction components.In this context, the construction type is of great importance and shouldnot be separately considered when defining the elementary componentsfor which prices are collected. Furthermore, the component cost methodenables the calculation of sub indices.70

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!