Search results for "tecnica"
showing 10 items of 2886 documents
Cost optimal analysis of lighting retrofit scenarios in educational buildings in Italy
2017
Abstract The European Energy Performance of Buildings Directive (EPBD) recast proposes, a comparative methodology to calculate cost-optimal levels of minimum energy performance requirements for buildings. This paper presents a method able to select the best retrofit action for lighting system, selectively analysing the daylight conditions and applying the cost-optimal methodology for different scenarios proposed for two existing educational buildings located in Italy. With the aim to improve both energy efficient and visual comfort conditions, the retrofit scenarios include lighting solutions with different combinations. They consider the replacement of lamps with more efficient lighting so…
THE SCENOGRAPHY OF SERPOTTA STUCCOES REVISITED - MATERIAL AND FORM
2015
The material that lies beneath the smooth shining surface of the stuccoes of the Serpotta family who used to work in Sicily from 1670 to 1730, has been thoroughly studied in previous papers, disclosing the deep, albeit empirical, knowledge of materials science that guided the artists in creating their masterpieces. In this work, attention is focused on the solid perspective and on the scenographic sculpture by Giacomo Serpotta, who is acknowledged as the leading exponent of the School. The study deals with some particular works of the artist, the “small-scaled plastic theatres”, so-called “teatrini”, which he made for the San Lorenzo Oratory in Palermo. On the basis of archival documents an…
Sicily: regional planning without spatial plans
2012
Spatial planning in Italy has experienced significant processes of inno- vation in the last 15 years, due to the growing devolution of powers from the national level both in legislative and operational terms. The paper aims to reconstruct the evolution of regional planning in Sicily, a region of the Italian Mezzogiorno which has experienced significant autonomy in the field of urban and regional policy. Through a critical review of the planning experiences carried out by various sectors of the regional administration, the paper discusses some critical question in the relationship between urban planning and sectoral planning and the role of physical planning in address- ing the regional deve…
Smart strategic planning in multiethnic environments: Mazara del Vallo as a Mediterranean gateway city
2011
The paper offers a critical account of the strategic planning process carried out in Mazara del Vallo, a medium-sized Sicilian city whose development model has been characterised by the dominant role of the local fishery economy. From the 1970s onwards, the workforce employed in the fishery industry was mostly of North African origin (particularly Tunisian). In the past few years, rising economic and social processes have put into question the survival of the North African population in the city, the presence of which could be a strategic asset in light of the following future Euro-Mediterranean integration scenarios: (a) the deep crisis in the fishery sector, which is calling into question…
RICHIAMI DA MARTE. UNA SAPIENTE ORGANIZZAZIONE DEL TERRITORIO A SCALA PLANETARIA, NELLA PUBBLICISTICA OTTO-NOVECENTESCA
2012
L'articolo indaga nella letteratura scientifica e nella stampa divulgativa a cavallo tra XI e XX secolo quale sia stata la immaginazione della "pianificazione territoriale" del pianeta Marte, a partire dalle osservazioni di Schiaparelli e Lovell
LO STATO DELLA PIANIFICAZIONE NELLA PROVINCIA DI PALERMO
2022
Il contributo propone un'anilisi quali-quantitativa sullo stato della pianificazione urbanistica comunale nella provincia di Palermo alla luce del rinnovo dei riferimenti normativi regionali in materia di governo del territorio con l'approvazione della LR 19/2020
Mixed Stone-timber Masonry in Traditional Construction: Structural, Architectural and Anti-seismic Features across Europe
2018
This paper investigates the stone masonry with timber reinforcement through the European traditional and historical architecture. It is a remarkable practice consisting of combining different materials to build up a masonry. This technology shows a wide variety of typological, formal, and technological types of buildings across Europe as it is strongly influenced by the nature and availability of local materials, the cultural aspects of the various communities, and the soils geological nature. As a consequence, the same constructive typology is based on different premises and leads to many interesting results. In this paper the various uses of such a mixed stone-timber masonry are shown in …
"Thermal penalty factors" accounting for site topological characteristics in pinch design of Heat Exchanger Networks
2010
Pinch analysis allows to determine targets and solutions for minimum energy requirements in process plants, basing on innovative tools like composite curves and table problem formulation, which ultimately allow generating an optimized heat exchanger network design. On another hand, this technique does not account directly for a number of factors which could play a primary role for the practical feasibility of the network. What if, for instance, once identified an optimal lay-out, we realize that some matches are hardly feasible in practice? Could we adapt the conventional pinch approach to keep into account site topological features since the preliminary design phase? In this paper the auth…
VELENI ED ALCHIMIE NEI MATERIALI DELL’EDILIZIA PRE INDUSTRIALE
2019
Since at least two decades, a renewed sensitivity to biocompatibility and the consequent diffusion of eco-certified building products have led to the attention of designers and operators on the issue of the healthness of construction materials. Although the application of strict protocols guarantees for new constructions very high levels of healthiness for both construction workers and users who come into direct contact with building materials and components, the issue for the characterization of potentially hazardous materials arises in many case for historical buildings. In addition to the well-known asbestos problem, there are new worrying signs deriving from the ascertainment in the inc…
Shear and flexural strength of corroded R.C. beams
2016
Simplified equations aimed at evaluating the flexural and shear capacity of corroded R.C. beams are presented and discussed in this paper, with reference to ordinary beams reinforced both longitudinally (with same-size bars) and transversely (with stirrups). A model is developed to take care of diffused and localised corrosion (pitting corrosion), concrete decay in compression and bond-strength decay at concrete-reinforcement interface. A fairly innovative contribution of this study is the introduction into the proposed equations of the main parameters governing the corrosion processes. The proposed approach is simple and effective, and may be adopted in the assessment of many damaged struc…