The paper aims to extract the dynamic properties of existing structures without utilizing the analytical models. The ambient vibration testing could be used on any type of frame such as concrete, steel and masonry to investigate the structural vulnerability. The method could be the first stage and necessarily for the retrofit process. To achieve this aim, the ambient vibration testing can...

This paper investigates the mutual relations of three current drivers of construction: lean construction, building information modelling and sustainability. These drivers are based on infrequently occurring changes, only incidentally simultaneous, in their respective domains. It is contended that the drivers are mutually supportive and thus synergistic. They are aligned in the sense that all re...

It is generally assumed that birds' choice of structurally suitable materials for nest building is genetically predetermined. Here, we tested that assumption by investigating whether experience affected male zebra finches' (Taeniopygia guttata) choice of nest material. After a short period of building with relatively flexible string, birds preferred to build with stiffer string while those that...

In recent years Building information modelling (BIM) has been considered as a means for transforming the building and construction industry by introducing significant changes in the industry for all stages of the construction process. However, when new technologies are promoted they are almost considered as a magic bullet that should transform an industry, or an organization to the better. By d...

The emergence of new open ended ICT (Information and communication Technology). is often accompanied by optimistic predictions about the technologies inherent capabilities, or “potential”, to solve a wide array organizational related problems. In the building and construction industry, BIM – Building Information Modelling – is such an example. However, unrealistic expectations about a technolog...

During European prehistory, hilltop enclosures made from polydisperse particle-and-block stone walling were exposed to temperatures sufficient to partially melt the constituent stonework, leading to the preservation of glassy walls called 'vitrified forts'. During vitrification, the granular wall rocks partially melt, sinter viscously and densify, reducing inter-particle porosity. This process ...