Posts

Showing posts from January, 2023

The New New? Curated Second Hand as a (Re)Construction Principle for Notre-Dame de Paris

  Mini Review In view of ever-increasing environmental and climate problems, a sustainable approach to dealing with the world’s resources is indeed being discussed, but the focus is placed primarily on the conservation of physical resources and much less on the reuse of intangible, non-reproducible cultural resources. In architecture, however, recycling cannot be reduced to atoms because both material and immaterial values are embodied within residual building mass [1]. When designing, reuse entails working and building with the past and its meaning for today. The more we understand the existing, “the less we must stand in opposition to it,” says Hermann Czech, “and the easier it will be to understand our decisions as a continuation of a whole” [2]. As a clever recycling of semiotics and both history and narratives, spoliation and assemblage are, according to our thesis, capable of expanding the principle of reuse and repurposing from the level of materiality to immaterial values, ...

Catastrophic Mechanism and Stability Analysis of Jiangdingya Landslide in Zhouqu County, Gansu Province, China

  Abstract On July 12, 2018, a large-scale landslide occurred in the Jiangdingya area, Nanyu Town, Gansu Province, China. According to remote sensing interpretation and field investigation, the landslide volume is about 480×104 - 550×104m3, which caused the Bailongjiang River to be blocked and the water level to rise, forming a dammed lake, flooding Nanyu Town. The landslide is characterized by chain disasters, which poses a serious threat to the ecological security of the upper reaches of the Yangtze River. In this paper, the catastrophic mechanism of Jiangdingya landslide is analyzed, and the stability of the slope is studied. According to the disaster characteristics, comprehensive safety control measures are put forward. The research results of this paper are of great significance to the prevention and control of chain disasters and the comprehensive treatment of slopes. Read More about this article: https://irispublishers.com/ctcse/fulltext/catastrophic-mechanism-and-stab...

Residential Property Development Feasibility Study – A Self-Fulfilling Prophecy?

  Introduction Property development business is considered one of the most risky corporate activities due to its cyclicality and volatility [1,2]. It involves numerous risk factors [3-5] such as such as macroeconomic, social, urban-planning, political-legal, regulatory, environmental, and technological framework conditions [6,7]. Yet property developers are either “knowingly taking risks” [8] or making decisions without sufficiently understanding and analyzing risks [9], resulting in committing to projects based on arbitrary or speculative decisions, and ultimately causing project failures and financial losses [10]. This short article reviews the three mainstream feasibility study methods and finds that the feasibility study adopted by the industry may require some further development. Especially, when the site value is determined by the residual value method, in-depth analysis is required to assess and capture the risk level associated with the future planning, construction, sales...

About the Sustainability of Buildings

  Opinion According to WCEC – Brudtland Report 1987 “Sustainable development is a development that meets the needs of the present without compromising of the ability of the future generations to meet their own needs.” Sustainability is at the confluence of the three dimensions (Figure 1). Buildings are very important industrial sector of sustainable development. The building industry represent approximately 40% of the total energy consumed. The energy used for heating and/or cooling, during the service life of a building is approximately 80% of the total energy consumed through building life cycle; 7% energy is used with row materials and contribution to energy due to demolition is 3%. According to some studies and to the paper of Y.J.GE and H.F. Xiang (IABSE Symposium Bangkok 2009) the Pyramid of Building Sustainability is presented in the Figure 2 (Figure 2). Read More about this article: https://irispublishers.com/ctcse/fulltext/about-the-sustainability-of-buildings.ID.0006...

Operational Modal Analysis and Structure Health Monitoring

  Abstract Modal parameters are able to characterize any structure uniquely. All the structural elements and the respective boundary conditions have a direct impact in all of the modal parameters (natural frequencies, damping ratios and mode shapes), making them suitable to detect damage along the structure. To this end, experimental identification of the modal parameters is necessary and must be conducted periodically. In the last decade, operational modal analysis has been developed to this purpose. It allows the identification of the modal parameter with the structures in operational conditions and using ambient excitation. Several improvements in the field were recently made with the computation of modal parameters uncertainties and with the automation in the identification process. Therefore, vibration-base structural health monitoring system is getting popular for critical civil structures such as bridges, high buildings and old constructions. Read More about this article:...

Geotechnical Perspective of the Causes of Cracks in Building of University Campus (Sindh University Jamshoro Sindh Pakistan)

  Abstract Building construction throughout the world faces defects from normal to heavy and destructive like cracks and fractures which cause damages and finally collapse to heavy life losses along with economical and financial. The crack-like structures are found in walls and columns also. For the purpose of study, the international experts have classified the smallest allowable standards of these defects which may not be harmful to buildings and people living there. This research study has been carried out to investigate the main reasons to investigate the causes of cracks in newly completed and used buildings in where some distinct cracks appeared immediately and after some years. Often these cracks seem almost in walls and other structural elements such as columns and beams, with different patterns. The general methods consisting of reconnaissance survey; building inspection and laboratory testing were used to investigate the causes of these detrimental cracks. By the use of a...

SFRC Modelling and Non-Linear Analysis of Beam- Column Joint Under Cyclic Loading

  Abstract In this paper reinforced concrete beam column joint is modelled and analyzed using ABAQUS software to compare the simulated results with the experimental study. The joint is the most critical and most important part of the multi-story frames or multi-story buildings when they are subjected to earthquake loading. In this research the joint is analyzed for two different types of non-linear analysis that is non-linear static analysis and a part of non-linear dynamic analysis for the visual comparison with the experimental study. Read More about this article: https://irispublishers.com/ctcse/fulltext/sfrc-modelling-and-non-linear-analysis-of-beam-column-joint-under-cyclic-loading.ID.000671.php Read More about Iris Publishers Google scholar Articles : https://scholar.google.com/citations?view_op=view_citation&hl=en&user=LoZ6uCQAAAAJ&cstart=20&pagesize=80&citation_for_view=LoZ6uCQAAAAJ:hkOj_22Ku90C

Project Monitoring and Early Warning of Time-Cost Overruns in Earned Value Management

  Abstract Project monitoring and control processes are crucial aspects of project management. To perform an appropriate project tracking, Earned Value Analysis (EVA) has to be implemented to help the project managers to measure project performances. A tool to monitor and control the cost, time and work done of a construction project. Furthermore, it also provides an “Early Warning” signal for immediate corrective action. Thereby, in this study, some work items related to a completed real life construction project were evaluated according to the method of Earned Value and the result implies that the analysis can be very useful in project forecasting and decision making relevant to early warnings. Read More about this article: https://irispublishers.com/ctcse/fulltext/project-monitoring-and-early-warning-of-time-cost-overruns-in-earned-value-management.ID.000673.php Read More about Iris Publishers Google scholar Articles : https://scholar.google.com/citations?view_op=vie...