CALCULATIVE COST AND PROCESS ANALYSIS OF TIMBERCONCRETE- COMPOSITE CEILINGS WITH FOCUS ON EFFORT AND PERFORMANCE VALUES FOR COST CALCULATIONS OF MULTISTOREY TIMBER BUILDINGS

Composite structures use the advantages of two materials – timber and concrete – and improve the efficiency of a material application. Especially the concept of timber-concrete-composite ceilings has synergetic effects to achieve an effective ratio of thickness to span with high cost effectiveness simultaneously. Following the systematic analysis of operation procedures, a research project was carried out on site to gain accurate data on effort and performance values for future cost calculations. Because of the high level of prefabrication of timber structures labour costs are the leading influencing parameters. The methodology in accordance with the technique of REFA and the specific circumstances of the timber installation process were implemented into the analysis to generate an appropriate system for the examination of these new building systems. To create a feasible and applicable database of values, performance factors and activity values have been examined on site, interpreted and edited for future cost calculation.