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Impact Analysis of a Building Collapse Caused by a Rainfall-Induced Landslide in Kerala, India
This study presents the experimental, numerical analysis, and dynamic impact analysis of a building collapse caused by a rainfall-induced landslide (vertical cut slope failure) on 15 August 2018, in Peringavu, Kerala, India, which resulted in the death of nine people. The volume of 1500 m3 soil-applied lateral thrust force on the building’s rear side led to its demolition. The study includes extensive geotechnical characterization. General limit equilibrium and finite element methods were used in the numerical analysis. The infiltration analysis involved a rainfall pattern of low, moderate, and higher intensities on the slope. The study involved a two-stage analysis. Firstly, the analysis of the vertical cut slope with the application rainfall intensities, and second, the analysis of the building under the dynamic impact of the landslide. As a result of the study, the failure mechanism of the vertical cut during intense rainfall and triggering factors were evaluated. The dynamic impact analysis was carried out to examine the effects of the impact of the landslide debris on the building and the performance of the building under the impact load. The load-bearing walls experienced high-intensity impact force developed by the landslide, resulting in the lateral displacement of 170 mm and differential settlement of 92 mm, which led to the building’s demolition. The flexural failures, excessive deflections, bending moments, foundation settlements, and displacement of structural elements were studied.
Journal Article
A cost trajectory to environmentally adaptive building construction in wet humid settings
PurposeThe purpose of this paper is to focus on the ongoing discourse centred on enhancing building performance to provide an interpretation of life cycle cost (LCC) analysis, directly applicable to building construction in coastal areas located in tropical wet–humid settings.Design/methodology/approachA survey of 50 buildings based on physical observation is carried out to identify typical failure patterns in wet‒humid environment. Further, a comparative initial construction cost and LCC analysis is computed for two alternative building schemes with identical floor plans: Scheme A using sound construction and detailing to guard against future maintenance problems and Scheme B adopting the typical designs evident in the study area.FindingsThe result of the analysis shows that in the long-run scheme, A is an economically more viable option than B, as the increased initial costs are entirely offset by the reduced running cost.Research limitations/implicationsThe contextual nature of LCC analysis poses difficulties in applying the evidence provided in this study to provide a generalisable financial justification to buildings clients.Practical implicationsThe outcome of the study provides analytical validation to overcome resistances and enables informed decision making by clients, which is necessary to promote transition from conventional to environmentally responsive design choices suitable to wet–humid conditions.Originality/valueThe study provides an interpretation of LCC analysis, directly applicable to building construction in the tropical wet–humid setting of coastal areas against the backdrop of inconsistencies in the practical application of the theory of LCC.
Journal Article
Nightclub roof collapses in Dominican Republic
Multiple people died after a nightclub roof collapsed in Santo Domingo, Dominican Republic, on April 8.
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Analysis on construction services laws for civil engineering projects on building failures
Construction Services Laws are legislation used to govern all manners of construction services. This research was taken in Jakarta, Indonesia. Laws used in this research are Law Number 18 of 1999 about Construction Services and Law Number 2 of 2017 about Construction Services. With the shift of Construction Services Law, of course there are several differences, changes, revision, and inclusion and exclusion of past laws. This changes and differences were analysed to improve the current running Construction Services Law for the future. This research uses two methods, which are literature study and study using questionnaire through observations and interviews. Variables and questions for the questionnaire were formed from study of literature, past researches and Construction Services Laws discussed in this paper. Results from the questionnaire was analysed using a computer program, IBM SPSS Statistics 23. Using that program, the data from the results were tested for its validity and reliability. And it was analysed using correlation analysis and factor analysis. From the analysis it was concluded that there are two factors that needs to be improved, the two factors are: regulation about building failure is not explained well enough, and the lack of regulation about Expert Assessor. Through these results, the construction services law can be improved and prevent environmental health damage caused by building failure that was caused by problems in construction services. These environmental health damage caused by building failure have negative impact to environmental health and safety of the surrounding area, whether from emission or toxic pollutants.
Journal Article
Professionalism for the built environment
In the aftermath of the Grenfell Tower tragedy, this new book provides thought provoking commentary on the nature of the relationship between society, the prevailing economic system and professionalism in the built environment. It is both an introduction to and an examination of professionalism and professional bodies in the sector, including a view of the future of professionalism and the organisations serving it. Simon Foxell outlines the history of professionalism in the sector, comparing and contrasting the development of the three major historic professions working in the construction industry: civil engineering, architecture and surveying. He examines how their systems have developed over time, where they are currently and some options for the future, whilst asking difficult questions about ethics, training, education, public trust and expectation from within and outside the industry. The book concludes with a six-point plan to help, if not ensure, that the professions remain an effective and essential part of both society and the economy; a part that allows the system to operate smoothly and easily, but also fairly and to the benefit of all. Essential reading for built environment professionals and students doing the professional studies elements of their training or in the process of applying for chartership or registration. The issues and lessons are applicable across all building professions-- Provided by publisher.
Book
Failure Analysis of a Partially Collapsed Building using Analytical Hierarchical Process
Building failure usually results in collapse if not discovered and properly addressed. Building collapse/failure most times causes loss of properties and lives. A case study of a partially collapsed one-story building is presented for emphasis with technical assessment of the partial-collapse cause so as to proffer remedy of the structure. This is achieved through detailed engineering analysis of the building’s structural elements and identification of remedial options. Field inspection is carried out through soil excavation to assess the foundation condition, taking soil samples from the collapsed building for laboratory study and nondestructive test. From inspection, it was observed that the building construction was inadequately supervised and as a result was under-reinforced, which led to excessive cracks and deflection. The soil is classified by AASHTO A-2-4: maximum dry density 2.15 mg/m3 and optimum moisture content 9%. The compressive strength of the structural elements was measured using the rebound hammer, and a mean compressive strength of 13 N/mm2 was obtained which indicates a low-compressive-strength concrete. Analytical hierarchical process is utilized as the multi-criteria decision-making method to derive the actual partial-collapse cause; from the priority vector 6, 56, 26 and 12% were obtained for soil/foundation, under-reinforcement, low-compressive-strength and overloading alternatives, respectively. The consistency ratio computed was 0.065 which shows the decision maker’s subjective assessment was consistent. The summary of the failure investigation underscored the importance of ensuring proper supervision and quality control for framed-structures construction.
Journal Article