Modification of Dynamic Foundation Response Due to Soil-Structure Interaction

This paper presents the results from extensive parametric dynamic analyses of soil-structure systems that focus on the clear modification (increase or decrease) of the acceleration amplitude at the foundation with respect to the free-field, especially for squatty structures. Properties of the systems are selected such as to cover a wide range of meaningful geometries and materials for engineering practice. The results are presented in terms of weighted modification factors of the maximum foundation acceleration amplitude with reference to the corresponding maximum acceleration amplitude at free-field, for squatty and more slender structures. For the large majority of the studied systems, foundation acceleration decreases from the free-field by 10–15% on average. Nevertheless, acceleration demand at the foundation increases compared to the free-field, for 30% of squatty and for 15% of the more slender structures. Modification of the foundation acceleration amplitude is also correlated with the ratio of the predominant period of the input motion to the flexible-base system period. Finally, the findings of this study are compared with sparse available recorded data from the Seismic Hazard Harmonization in Europe database.     

The colors of the Fontana di Trevi: an analytical approach

During the last restoration of the Fontana di Trevi -Rome (2014–2015), it has been performed a diagnostic investigation to characterize the materials used to build and obtain the colors of the surfaces of some architectural elements of this fountain. According to the restoration teamwork needs, we focussed our efforts on the dome over the central statue of Oceanus, on the bas-relieves on the sides of the dome, and on the cliff where the water flows. Several samples were collected from these elements and therefore, they were subjected to an analytical approach including infrared spectroscopy, optical and scanning electron microscopy. The achieved results indicated the use of red earth pigments on the dome. The same pigment has been revealed on the bas-relieves, although their colors have an additional contribution due to degraded layers. Samples taken from the cliff showed a complex stratigraphy, although a white scialbo has been identified as original layer, testifying the intentions of the authors in term of color rendering. This information was essential for the restores in order to choose the proper intervention procedure for each investigated surface. The research testified the importance of an integrated diagnostic analysis to preserve the original colours of monuments and building.     

Geographies of Swimming Pool Provision: Lessons from Glasgow 1804–2014

Swimming is a popular form of recreation and exercise in the UK and US. Swimming can take place outdoors but, particularly in the UK, largely takes place in designated indoor pools. Existing research tends to focus on ‘public’ or ‘municipal’ pools leaving broader spatial geographies of swimming pool provision under explored. In response to concern about swimming pool closures, this paper draws from extensive archival research into all swimming pools in the City of Glasgow, Scotland, since the first opened in 1804. Formal and informal programmes of pool building and closure were revealed. Rather than decreasing, public provision has remained constant for the last 100?years but become progressively more spread out in relation to the city’s changing size. Broadening exploration beyond the ‘public’ category exposed a vast drop in school pool numbers around the year 2000 due to a Private Finance Initiative project that consolidated the secondary school estate and outsourced school building management. The lessons: researching all types of swimming pool through time greatly enriches understandings of the changing meaning and extent of public service provision.