scholarly journals AHP comparative analysis of construction and demolitio (C&D) waste recycling scenarios: The case of Beijing

2019 ◽  
Vol 118 ◽  
pp. 04018
Author(s):  
Guiqin Wang ◽  
Hongyu Zhang ◽  
Wei Cheng ◽  
Fei Zhou ◽  
Feng Yabei
Keyword(s):  
Waste Recycling ◽  
Disposal Site ◽  
Construction Site ◽  
Economic Costs ◽  
Treatment Facility ◽  
Construction Sites ◽  
Technical Feasibility ◽  
Content Type ◽  
Final Disposal ◽  
Waste Production

As construction waste production in Beijing has increased significantly, there is an urgent demand to manage and dispose it in a more economical and environmentally-friendly way. As there are different benefits and limits between preliminary sorting/recycling on construction sites and centralized treatment on final disposal sites, three scenarios were formed. AHP was used to compare these scenarios from the aspect of technical feasibility, economic costs and environmental effects. AHP analysis results showed that the priority of three scenarios followed D3>D1>D2, indicating the optimal way for C&D waste in Chaoyang district is firstly going through primary recycling with a mobile treatment facility on the construction site and then transporting to a final disposal site.

scholarly journals Covid-19 protocols: assessing construction site workers compliance

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Michael Ayodele Olukolajo ◽  
Abiodun Kolawole Oyetunji ◽  
Ifeoluwa Benjamin Oluleye
Keyword(s):  
Research Method ◽  
Design Methodology ◽  
Analytical Approach ◽  
Preventive Measures ◽  
Construction Site ◽  
Construction Sites ◽  
Protective Measures ◽  
Content Type ◽  
Contact Precautions ◽  
Structured Questionnaire

Purpose This paper aims to investigate construction site workers’ compliance with various coronavirus (Covid-19) protocols while working on construction sites. Design/methodology/approach This survey was conducted at the end of the imposed lockdown following Nigeria’s upsurge of the Covid-19 pandemic. The survey research method was adopted for the study using a structured questionnaire administered to 246 construction site workers under strict Covid-19 preventive measures. The data was complemented through personal observations of the study site activities. The results were analysed using frequency tables and a factor analytical approach. Findings The preventive measures in place on construction sites can be classified into personal protective measures, good etiquette/manners, contact precautions and prompt actions. Although the workers claimed to be aware of the Covid-19 pandemic, their disposition towards the preventive measures on construction sites is worrisome. Hence, their level of compliance with the protocols could mitigate the spread of the virus. Originality/value This paper fulfils an identified gap to study the need to promote public health by mitigating the global pandemic’s spread in areas where social distancing cannot be easily observed.

Analysis of the interaction between safety measures and workers' safety awareness from the construction workers' perspective

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Fatih Yılmaz
Keyword(s):  
Occupational Safety ◽  
General Level ◽  
Construction Site ◽  
Construction Sites ◽  
Perceived Knowledge ◽  
Safety Measures ◽  
Actual Knowledge ◽  
Content Type ◽  
Safety Awareness ◽  
Knowledge Levels

PurposeThe research was carried out to statistically evaluate the relationship between the safety measures at the construction sites and the actual and perceived knowledge levels of the employees about these measures.Design/methodology/approachFace-to-face surveys were conducted with the workers. The survey included some perception-based questions about preventive measures at the construction site, as well as determining the level of awareness of employees on occupational health and safety (OHS) practices. The data were analyzed with descriptive statistical methods and bivariate correlation analysis.FindingsThe actual knowledge levels of workers on OHS measures in the workplace is significantly lower than their perceived knowledge levels. However, there is a positive, linear and strong relationship between the actual knowledge levels of the employees about some OHS rules applied in the workplace and the general level of knowledge they perceive about themselves. Some protective measures such as occupational safety expert, OHS board, employee representatives, training and information activities at construction sites positively affect the safety awareness of employees. However, low-frequency and documentation-intensive activities such as risk assessment, emergency activities and periodic controls have no or weak correlations.Originality/valuePerception-based opinions of construction site workers on occupational safety issues are transformed into numerical data and analyzed with a quantitative method.

Is the construction site a safer place under the USACE or local government guidelines? The case of Afghanistan

2022 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Mohammad Hashim Ibrahimkhil ◽  
Laith Hadidi
Keyword(s):  
Developing Countries ◽  
Local Government ◽  
Construction Industry ◽  
Construction Projects ◽  
Safety Performance ◽  
Construction Site ◽  
Infrastructure Projects ◽  
Construction Sites ◽  
Safety Practices ◽  
Content Type

PurposeThe aim of this paper is to assess the safety level of construction sites in Afghanistan following the US Army Corps of Engineers (USACE) safety practices and compare this with other construction sites in Afghanistan that follow local government safety guidelines. The USACE oversees and funds many infrastructure projects in Afghanistan, and these projects are supposed to follow the same standards implemented in the USA, including safety standards. The local government of Afghanistan also funds infrastructure projects in Afghanistan; however, these do not follow USACE best practices. This research explores the question of whether the USACE standards provide a safer construction site. The effect of the USACE standards on safety practices in construction projects is also investigated in the Afghanistan construction industry.Design/methodology/approachA literature review and other safety checklists were used to develop a safety checklist containing 104 items (questions) in 17 categories. Subsequently, the checklist was used to assess the safety performance of 57 construction projects (25 USACE projects, and 32 governmental projects). Utilizing quantitative analysis, the Spearman rank correlation coefficient (Rho) and Mann–Whitney tests were carried out for correlation and statistical disparity between USACE and governmental projects.FindingsThe safety performance level of Afghan government projects was found to be poor in relation to other developing countries, while in USACE projects it was excellent. In addition, fire prevention, safety administration, PPE, heavy equipment, and handling and storage of materials for all types of contractors were the most overlooked aspects of Afghan Government projects.Practical implicationsThe findings clearly demonstrate the deficiencies in construction sites observed during this study and also support the adoption of USACE standards in Afghanistan projects.Originality/valueTo the best of the authors’ knowledge, this study is the first to investigate the safety of construction sites in Afghanistan. The study also demonstrates the benefits of adopting international standards (USACE) to improve the safety of construction sites in a developing country such as Afghanistan. The findings provide evidence of the safety of the Afghanistan construction industry compared to other developing countries. These findings will contribute to the Afghan Government's efforts to track injury statistics.

scholarly journals Spatio-temporal analysis of trajectories for safer construction sites

2018 ◽  
Vol 7 (1) ◽  
pp. 80-100 ◽  
Author(s):  
Muhammad Arslan ◽  
Christophe Cruz ◽  
Ana-Maria Roxin ◽  
Dominique Ginhac
Keyword(s):  
Safety Management ◽  
Construction Safety ◽  
Construction Workers ◽  
Gps Data ◽  
Construction Site ◽  
Trajectory Data ◽  
Construction Sites ◽  
Content Type ◽  
Spatio Temporal ◽  
Construction Safety Management

Purpose The purpose of this paper is to improve the safety of construction workers by understanding their behaviors on construction sites using spatio-temporal (ST) trajectories. Design/methodology/approach A review of construction safety management literature and international occupational health and safety statistics shows that the major reasons for fatalities on construction sites are mobility-related issues, such as unsafe human behaviors, difficult site conditions, and workers falling from heights and striking against or being struck by moving objects. Consequently, literature has been reviewed to find possible technological solutions to track the mobility of construction workers to reduce fatalities. This examination has suggested that location acquisition systems, such as Global Positioning System (GPS), have been widely used for real-time monitoring and tracking of workers on construction sites for hazard prevention. However, the raw data captured from GPS devices are generally available as discrete points and do not hold enough information to understand the workers’ mobility. As a solution, an application to transform raw GPS data into ST trajectories using different preprocessing algorithms is proposed for enhancing worker safety on construction sites. Findings The proposed system preprocesses raw GPS data for stay point detection, trajectory segmentation and intersection of multiple trajectories to find significant places and movements of workers on a construction site to enhance the information available to H&S managers for decision-making processes. In addition, it reduces the size of trajectory data for future analyses. Originality/value Application of location acquisition systems for construction safety management is very well addressed in the existing literature. However, a significant gap has been found: the usage of preprocessed ST trajectories is still missing in workers’ safety monitoring scenarios in the area of construction management. To address this research gap, the proposed system uses preprocessed ST trajectories to monitor workers’ movements on a construction site to identify potentially unsafe behaviors.

Organising logistics and transport activities in construction

2019 ◽  
Vol 30 (2) ◽  
pp. 620-640 ◽  
Author(s):  
Anna Dubois ◽  
Kajsa Hulthén ◽  
Viktoria Sundquist
Keyword(s):  
Supply Chain ◽  
Design Methodology ◽  
Levels Of Analysis ◽  
Supply Network ◽  
Construction Site ◽  
Construction Sites ◽  
Content Type ◽  
Enhance Efficiency ◽  
The Individual ◽  
Practical Implications

Purpose The purpose of this paper is to identify and analyse how different ways of organising transport and logistics activities in construction impact on efficiency. The paper scrutinises three particular transport and logistics configurations: the de-centralised coordinated configuration, the on-site coordinated configuration and the supply network coordinated configuration. Design/methodology/approach Three configurations are derived from the literature and from case studies. The efficiency of the three configurations is analysed on three levels of analysis: the construction site, the supply chain, and across supply chains and construction sites. Findings The paper concludes that there are possibilities to enhance efficiency on all three levels of analysis by widening the scope of coordination beyond the individual construction site. Practical implications The analysis points to efficiency potentials in applying the supply network coordinated configuration, although this configuration puts high demands on collaboration amongst the actors involved. Originality/value The paper provides illustration, and explanation, of the efficiency potentials involved in the three configurations.

Cyber physical system for safety management in smart construction site

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Weiguang Jiang ◽  
Lieyun Ding ◽  
Cheng Zhou
Keyword(s):  
Construction Industry ◽  
Physical System ◽  
Safety Management ◽  
Data Communication ◽  
Cyber Physical System ◽  
Construction Site ◽  
Construction Sites ◽  
Design Data ◽  
Content Type ◽  
Virtual Construction

PurposeConstruction safety has been a long-term problem in the development of the construction industry. An increasing number of smart construction sites have been designed using different techniques to reduce injuries caused by construction accidents and achieve proactive risk control. However, comprehensive smart construction site safety management solutions and applications have yet to be developed. Thus, this study proposes a smart construction site framework for safety management.Design/methodology/approachA safety management system based on a cyber-physical system is proposed. The system establishes risk data synchronization mapping between the virtual construction and physical construction sites through scene reconstruction design, data awareness, data communication and data processing modules. Personnel, mechanical and other risks on site will be warned and controlled.FindingsThe results of the case study have proved the management benefits of the system. On-site workers gradually realized that they should enter the construction site based on the standard process. And the number of people close to the construction hazard areas decreased.Research limitations/implicationsThere are some limitations in the technology of smart construction site. The modeling speed can be faster, the data collection can be timelier, and the identification of unsafe behavior can be integrated into the system. Construction quality and efficiency issues in a virtual construction site will also be solved in further research.Practical implicationsIn this paper, this system is actually applied in the mega project management process. More practical projects can use the management ideas and method of this paper to ensure on-site safety.Originality/valueThis study is among the first attempts to build a complete smart construction site based on CPS and apply it in practice. Personnel, mechanical, components, environment information will be displayed on the virtual construction site. It will greatly promote the development of the intellectualized construction industry in the future.

scholarly journals Managing “a little bit unsafe”: complexity, construction safety and situational self-organising

2019 ◽  
Vol 26 (11) ◽  
pp. 2519-2534
Author(s):  
Fred Sherratt ◽  
Chris Ivory
Keyword(s):  
Safety Management ◽  
Empirical Support ◽  
Structured Interview ◽  
Social Constructionist ◽  
Management Systems ◽  
Construction Site ◽  
Construction Sites ◽  
Content Type ◽  
Management Approaches ◽  
The Uk

Purpose The purpose of this paper is to unpack the shared understandings of safety held by workers on large UK construction sites using a complexity lens, and so provide empirical support for the inclusion of situational self-organising within construction site safety management systems (SMS). Design/methodology/approach A social constructionist epistemology supports the discourse analysis of talk (semi-structured interview and conversational), text (SMS and documentation) and visual (safety related signage) data collection from five large (+£20 m) UK construction sites. Findings Construction workers readily understand safety to be an emergent phenomenon with the complex system that is the construction site. Contemporary safety management approaches struggle with this complexity, yet there is the potential to mobilise situational self-organising on sites to improve safety in practice. Research limitations/implications Epistemological foundations mean no claim is made to generalisability as perceived by traditional positivistic parameters. The data are limited to large (+£20 m) UK construction sites; however, underlying construction management systems are common to the industry as a whole and can find fit with practitioner experiences and other empirical academic work from both the UK and other countries. Practical implications Situational self-organising of safety management within the construction workforce is proposed as a key contribution to a relevant, dynamic and effective SMS. Originality/value Data are analysed from a social constructionist perspective and considered through a complexity lens. This approach unpacks these data in an original way to seek synergy with existing adaptive safety approaches, specifically situational self-organising and make recommendations for practice.

Implementation challenges of COVID-19 safety measures at construction sites in South Africa

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Christopher Amoah ◽  
Fredrick Simpeh
Keyword(s):  
South Africa ◽  
Construction Industry ◽  
Construction Materials ◽  
Research Approach ◽  
Construction Site ◽  
Construction Sites ◽  
Safety Measures ◽  
Content Type ◽  
Implementation Challenges ◽  
Construction Companies

Purpose The COVID-19 pandemic drastically changed safety measures in every industry, including the construction industry. Thus, the construction companies have instituted safety measures at the construction sites to curve the disease’s spread among the workforce. This paper aims to examine the challenges encountered by construction firms in implementing COVID-19 safety measures at construction sites. Design/methodology/approach A qualitative research approach was adopted for this study using open-ended interview questions to solicit data from 19 construction professionals currently working on a construction project in South Africa. Content analysis with the assistance of an Excel spreadsheet was used to analyse the data collected. Findings The findings indicate that there are numerous challenges such as ignorance of COVID-19, the supply of poor personal protective equipment (PPEs) by contractors, lack of compliance, sanitising construction materials, difficulty in sharing tools and equipment, public transport usage by workers, superstition (COVID-19 is for a particular group of people), complying with social distancing rules, among others in the implementation of the COVID-19 safety measure at the construction site to curb the spread of the disease among the workers. These challenges have, therefore, hampered their effort to strictly adhere to the safety measures in accordance with the COVID-19 safety protocol at the project sites currently under construction. Research limitations/implications The interviewees were construction professionals working in the South African construction industry during the COVID-19 period. Practical implications The implication is that, due to the challenges faced in implementing the COVID-19 safety measures, workers on the construction site are not adequately protected from contracting COVID-19. The workers may thus contract the disease at the project sites and transmit it to their families and vice versa, which may have further implications on the spread of the disease within the communities and society. Originality/value The study has identified implementation challenges of the COVID-19 safety measures at construction sites of which the construction stakeholders must institute measures to overcome since COVID-19 has become part of our daily life. The study also recommends some preventive measures to the owners of construction companies to help overcome or minimise these COVID-19 safety implementation hurdles to minimise the spread of the disease among the construction site workers.

scholarly journals Penanganan Sampah Plastik pada Produksi Paving Block

2021 ◽  
Vol 22 (2) ◽  
pp. 170-177
Author(s):  
Zainuri Zainuri
Keyword(s):  
Statistical Data ◽  
Plastic Waste ◽  
Disposal Site ◽  
Final Disposal ◽  
Biodegradable Waste ◽  
Waste Production ◽  
Almost All

ABSTRACT Efforts to handle waste are continuously carried out, starting from the lowest layer, namely households, to large factories that produce garbage every day. Waste production that is not balanced with the handlers causes waste to be a problem for the environment. One type of waste that is difficult to decompose by nature (non-biodegradable) is plastic waste, which occupies the most considerable quantity of other types of waste. Based on statistical data, the amount of non-biodegradable waste that is disposed of in the final disposal site every day in several cities in Indonesia is 6,598.23 tons/day. This study aims to calculate the reduction in plastic waste if it is used in making paving blocks. Almost all variations are included in quality D outlined in SNI 03-0691-1996. Only two variations have below the required standard, namely 10% plastic: 90% sand and 60% plastic: 40% sand. In the variation 70% plastic: 30% sand, the plastic weight needed is 796.32 kg and in the variation 80% plastic: 20% sand, the need for plastic waste drops to 793.60 kg. The variation 70% plastic: 30% sand is recommended for production because it absorbs the most plastic waste from the calculations made. This study concluded that the potential for reducing plastic waste if it is used for the production of paving blocks is 3.9816 tons/day in the job mix with a variation of 70% plastic: 30% sand. Keywords: inorganic, paving blocks, plastic, garbage   ABSTRAK Upaya penanganan sampah terus dilakukan mulai dari lapisan terbawah yaitu rumah tangga hingga pabrik besar yang menghasilkan sampah setiap hari. Produksi sampah yang belum berimbang dengan penanganan menyebabkan sampah masih menjadi masalah bagi lingkungan. Salah satu jenis sampah yang sulit diuraikan oleh alam (non-biodegradable) adalah sampah plastik, menempati kuantitas terbesar dari jenis sampah lainnya. Berdasarkan data statistik, jumlah sampah non-biodegradable yang dibuang ke TPA sampah setiap hari di beberapa kota di Indonesia sebesar 6.598,23 ton/hari. Penelitian ini bertujuan untuk menghitung potensi pengurangan sampah plastik apabila dimanfaatkan dalam pembuatan paving block. Hampir semua variasi masuk dalam mutu D yang digariskan dalam SNI 03-0691-1996. Hanya dua variasi memiliki kekuatan di bawah standar yang disyaratkan yaitu variasi 10% plastik: 90% pasir dan 60% plastik: 40% pasir. Pada variasi 70% plastik: 30% pasir, berat plastik yang dibutuhkan 796,32 kg dan pada variasi plastik 80%: 20% pasir, kebutuhan sampah plastik turun menjadi 793,60 kg. Dari perhitungan yang dilakukan maka variasi 70% plastik: 30% pasir yang direkomendasikan untuk diproduksi sebab menyerap paling banyak sampah plastik. Dalam penelitian ini disimpulkan bahwa potensi pengurangan sampah plastik jika dimanfaatkan untuk produksi paving block adalah sebesar 3,9816 ton/hari pada job mix dengan variasi 70% plastik: 30% pasir. Kata kunci: non-biodegradable, paving block, plastik, sampah

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