32 documents found, page 1 of 4

Material de Construção do Ninho da Vespa Asiática - Um contributo

Muitos trabalhos de investigação têm vindo a ser desenvolvidos no sentido de encontrar novas soluções para os diversos contextos da ciência através da bio-inspiração. Este trabalho está centrado no estudo do ninho da vespa asiática e, em particular, no estudo do seu material de construção. Esta construção natural é complexa em todas a vertentes. A sua complexidade arquitetónica, estrutural, material, funcional,...

Structural and material characterization of a Haussmann Building Complex at la ...

Haussmann buildings architecture spread throughout the city of Paris. Nevertheless, those buildings are nowadays submitted to heavy operations of use change, conservation and rehabilitation, justified by several reasons, among others are building aging and the increasing demand for hotel rooms in Paris. In this paper, a structural and material characterization of a Haussmann building complex located at La Madel...

An analytical approach to assess the influence of the massive wall material, th...

The influence of the massive wall material, thickness and ventilation system on the Trombe wall thermal performance was analysed based on an analytical methodology. Results obtained from experimental work will also be added to this study. During the heating season, for the non-ventilated Trombe wall, the global heat gains decrease is not proportional to the thickness increase, and this ratio depends on the mass...

Structural and material characterization of a haussmann building

Haussmann buildings are representative of Paris urban architecture. However, those buildings being centenarians, present several pathologies which is preventing their adequate use. Moreover, an upgrade regarding users security, acoustic, thermal and fire requirements is, among others, urgently needed to meet the new standards. Additionally, there is actually, in Paris, an increasing demand for hotel rooms. For ...

Risk management in construction projects: are small companies prepared?

Earth-based construction material field tests characterization in the Alto Dour...

The Alto Douro Wine Region, located in the northeast of Portugal, a UNESCO World Heritage Site, presents an abundant vernacular building heritage. This building technology is based on a timber framed structure filled with a composite earth-based material. A lack of scientific studies related to this technology is evident, furthermore, principally in rural areas, this traditional building stock is highly deterio...

An experimental analysis of the Trombe wall temperature fluctuations for high r...

Despite the studies already developed about Trombe walls, more research work is needed to contribute to the knowledge about their behaviour and optimize it according to the specific characteristics of each climatic region. The ventilation openings and the shading device operation decisively influence the temperatures fluctuation along the system and that impact should be discussed. In this context, a test cell ...

Experimental and analytical approach on the Trombe wall thermal performance par...

An analytical and experimental analysis on the Trombe wall thermal performance was carried out for different conditions of ventilation openings and occlusion device operation. Experimental results allowed to determine temperature fluctuation, heat flux, heat delay and air velocity at the ventilation openings. A calculation methodology was applied to estimate the heat gains and losses through the system using ex...

Second-order differential equations in the Laguerre–Hahn class

Laguerre–Hahn families on the real line are characterized in terms of second-order differential equations with matrix coefficients for vectors involving the orthogonal polynomials and their associated polynomials, as well as in terms of second-order differential equation for the functions of the second kind. Some characterizations of the classical families are derived.

Tipologias estruturais e modelação numérica de paredes de tabique da região Vin...