New Trends Towards Enhanced Structural Efficiency and Aesthetic Potential in Tall Buildings: The Case of Diagrids

Due to the increasing number of people and activities within the cities, tall buildings are exploited worldwide to address the need for new living and commercial spaces, while limiting the amount of used land. In recent decades, the design of tall buildings has undergone a remarkable improvement, thanks to the development of new computational tools and technological solutions. This has led to the realization of innovative structural systems, like diagrids, which allow the achievement of high structural performances and remarkable architectural effects. In this contribution, a thorough and updated review of diagrid structural systems is provided. Simplified methodologies for the preliminary design and structural analysis are reported. Special attention is also paid to the optimization of the structural response based on the geometrical pattern. A discussion of the effect of local deformability, stability and shear-lag phenomenon is carried out. Results from nonlinear and dynamic analyses for the seismic assessment of diagrid systems are reported, and attention is also paid to the recent research on diagrid nodes. Eventually, an overview of twisted, tapered, tilted and freeform diagrid towers is carried out, with a final mention of hexagrids, another recent evolution of tubular systems for tall buildings.

New Trends Towards Enhanced Structural Efficiency and Aesthetic Potential in Tall Buildings: The Case of Diagrids

Due to the increasing number of people and activities within the cities, tall buildings are exploited worldwide to address the need for new living and commercial spaces, while limiting the amount of used land. In recent decades, the design of tall buildings has undergone a remarkable improvement, thanks to the development of new computational tools and technological solutions. This has led to the realization of innovative structural systems, like diagrids, which allow the achievement of high structural performances and remarkable architectural effects. In this paper, a thorough and updated review of diagrid structural systems is provided. Simplified methodologies for the preliminary design and structural analysis are reported. Special attention is also paid to the optimization of the structural response based on the geometrical pattern. A discussion of the effect of local deformability, stability and shear-lag phenomenon is carried out. Results from nonlinear and dynamic analyses for the seismic assessment of diagrid systems are reported, and attention is also paid to the recent research on diagrid nodes. Eventually, an overview of twisted, tapered, tilted and freeform diagrid towers is carried out, with a final mention of hexagrids, another recent evolution of tubular systems for tall buildings.

A comparative study of Timurid mosques with Evolved Gothic Churches

Considering the wealth of glorious religious buildings in the Timurid period in Iran, which wascontemporaneous with the Evolved Gothic period in Europe, a comparative study has been undertakento explore the architectural effects of these two periods on each other along with their similarities anddifferences. This is an applied historical research that adopts a library research method for data collection.By studying the political, economic, and cultural conditions of these periods and by reviewing fiveimportant buildings belonging to each period, the similarities and disparities of these two architecturalstyles are investigated to shed further light on the interaction of the Timurid and Evolved Gothicarchitecture. Despite the geographic distance, and religious and culture different between the Timuridperiod in Iran and the Evolved Gothic in Europe, which overshadows the interaction of these twoperiods, one can still witness that the religious architecture of the Evolved Gothic period has beeninspired by Timurid architecture in some respects, including building materials, interior decoration ofbuildings and architectural style.

Study on Flat Roofing Systems

In many buildings, the roof is a major element that gives the building its distinctive profile .The main purpose of a roof is to protect the building or the house in all types of weather with a minimum of maintenance .a roof must be strong to with stand snow and wind loads. Another consideration is appearance .a roof should add to the attractiveness of the building roof styles are used to create different architectural effects. This paper reports a study on flat roof systems include the layers of structural elements of the roof, types of finish used, flashing, roof edging, drainage, and other details associated with the roof. © 2018 JASET, International Scholars and Researchers Association