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Fulltext Construction occupational safety and health from the perspective of Malaysian residential construction industry

Mohd Hafiidz Jaafar, Kadir Arifin, Kadaruddin Aiyub, Muhammad Rizal Razman, Mark Harris Zuknik

Journal of Occupational Safety and Health, 2016;13(2):23-34.
MyJurnal

Construction industry is one of the major contributors towards Malaysian economy and socio-economy. It is an important
industry gearing Malaysia towards developed nation status. However, fatalities in this industry are a crucial problem. Number of
fatalities in this industry is the highest compare to other industries registered in Malaysia. The contributing factors can be separated
into immediate (human and worksite elements) and underlying (management and external). Occupational safety and health (OSH)
management is a challenge in the construction industry due to its hazardous nature. A framework of construction OSH management
consisting of policy, process, personnel and incentive elements were tested. 13 respondents from 13 residential projects comprising of
high-rise and low-rise in Pulau Pinang were interviewed. It was found that the immediate factors are being more recognized by the
respondents compare to the underlying factors. Human element is perceived as the most significant contributor, while the external
element is the least significant. In terms of construction OSH management, process and personnel elements are the most significant in
developing an effective OSH management programme.

Matched MeSH terms: Construction Industry
Fulltext The effect of crumb rubber particle size to the optimum binder content for open graded friction course

Ibrahim MR, Katman HY, Karim MR, Koting S, Mashaan NS

ScientificWorldJournal, 2014;2014:240786.
PMID: 24574875 DOI: 10.1155/2014/240786

The main objective of this paper is to investigate the relations of rubber size, rubber content, and binder content in determination of optimum binder content for open graded friction course (OGFC). Mix gradation type B as specified in Specification for Porous Asphalt produced by the Road Engineering Association of Malaysia (REAM) was used in this study. Marshall specimens were prepared with four different sizes of rubber, namely, 20 mesh size [0.841 mm], 40 mesh [0.42 mm], 80 mesh [0.177 mm], and 100 mesh [0.149 mm] with different concentrations of rubberised bitumen (4%, 8%, and 12%) and different percentages of binder content (4%-7%). The appropriate optimum binder content is then selected according to the results of the air voids, binder draindown, and abrasion loss test. Test results found that crumb rubber particle size can affect the optimum binder content for OGFC.

Matched MeSH terms: Construction Industry/methods*
Energy retrofitting strategies for existing buildings in Malaysia: A systematic review and bibliometric analysis

Lakhiar MT, Sanmargaraja S, Olanrewaju A, Lim CH, Ponniah V, Mathalamuthu AD

Environ Sci Pollut Res Int, 2024 Feb;31(9):12780-12814.
PMID: 38270761 DOI: 10.1007/s11356-024-32020-x

This paper comprehensively examines passive and active energy retrofit strategies as a highly effective approach for reducing building energy consumption and mitigating CO2 emissions while enhancing comfort and sustainability. The paper further examines energy simulation software and assesses the integration of renewable energy systems in building to improve energy efficiency. The review used the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) methodology, ensuring a rigorous and comprehensive analysis. In addition, the study utilized bibliometric analysis with VOSviewer to provide valuable insights into the research trends and influential publications in building energy retrofits. Bibliometric analysis reveals strong collaboration among 17 authors, emphasizing their significant contributions. Keywords like energy retrofitting and efficiency are prominent, indicating their importance in academic literature. Findings show passive strategies are more effective in reducing energy consumption, though a combined approach with active strategies can yield optimal results. Retrofitting presents challenges, such as substantial initial costs and regulatory barriers. User acceptance is crucial, considering potential disruptions. The review highlights the importance of energy simulation software, with tools like EnergyPlus, eQUEST, and IES VE identified for evaluating and identifying cost-effective retrofit measures in building performance. By providing comprehensive insights into the various strategies and tools available for retrofitting buildings to achieve energy efficiency and sustainability goals, this review serves as an authoritative resource for building owners, managers, and professionals in the building industry. It offers invaluable guidance for informed decision-making and facilitates implementing effective, energy-efficient, and sustainable building retrofitting practices.

Matched MeSH terms: Construction Industry*
A comparison of hand-arm vibration syndrome between Malaysian and Japanese workers

Su AT, Fukumoto J, Darus A, Hoe VC, Miyai N, Isahak M, et al.

J Occup Health, 2013;55(6):468-78.
PMID: 24162147

OBJECTIVES: The aim of this study was to investigate the clinical characteristics of HAVS in a tropical environment in comparison with a temperate environment.
METHODS: We conducted a series medical examinations among the forestry, construction and automobile industry workers in Malaysia adopting the compulsory medical examination procedure used by Wakayama Medical University for Japanese vibratory tools workers. We matched the duration of vibration exposure and compared our results against the Japanese workers. We also compared the results of the Malaysian tree fellers against a group of symptomatic Japanese tree fellers diagnosed with HAVS.
RESULTS: Malaysian subjects reported a similar prevalence of finger tingling, numbness and dullness (Malaysian=25.0%, Japanese=21.5%, p=0.444) but had a lower finger skin temperature (FST) and higher vibrotactile perception threshold (VPT) values as compared with the Japanese workers. No white finger was reported in Malaysian subjects. The FST and VPT of the Malaysian tree fellers were at least as bad as the Japanese tree fellers despite a shorter duration (mean difference=20.12 years, 95%CI=14.50, 25.40) of vibration exposure.
CONCLUSIONS: Although the vascular disorder does not manifest clinically in the tropical environment, the severity of HAVS can be as bad as in the temperate environment with predominantly neurological disorder. Hence, it is essential to formulate national legislation for the control of the occupational vibration exposure.

Matched MeSH terms: Construction Industry
Dose-response relationship between hand-transmitted vibration and hand-arm vibration syndrome in a tropical environment

Su AT, Maeda S, Fukumoto J, Darus A, Hoe VC, Miyai N, et al.

Occup Environ Med, 2013 Jul;70(7):498-504.
PMID: 23645621 DOI: 10.1136/oemed-2012-101321

The dose-response relationship for hand-transmitted vibration has been investigated extensively in temperate environments. Since the clinical features of hand-arm vibration syndrome (HAVS) differ between the temperate and tropical environment, we conducted this study to investigate the dose-response relationship of HAVS in a tropical environment.

Matched MeSH terms: Construction Industry/instrumentation
Fulltext The effects of POFA and SF as TBC binder on the heat of hydration and compressive strength of mortar

Nor Umairah Abd Rahim, Mohd Fadzil bin Arshad

Pertanika Journal of Science & Technology, 2017;25(105):163-168.
MyJurnal

Ordinary Portland Cement (OPC) is widely used by the construction industry. Research to find the precise proportion of cement replacement material which can be used to produce a product called Ternary Blended Cement (TBC) is not new. The objective of this study is to determine the effect of POFA and SF as TBC on the heat of hydration and compressive strength of mortar. Before producing TBC, specimens using BBC is required. Mix design proportion for POFA and SF are 5%, 10%, 15%, and 20%. Mix design proportion TBC are chose from the highest compressive strength value achieved at 7 days of curing. This research found the heat of hydration of TBC containing 20% POFA and 5% SF is high in the beginning to drop at the end of hydration process in addition to producing lower compressive strength.

Matched MeSH terms: Construction Industry
Fulltext Malaysian construction industry: trends of occupational accidents from 2006 to 2015

Nur Nadia Adila Abdul Halim, Mohd Hafiidz Jaafar, Kadir Arifin, Kadaruddin Aiyub, Muhammad Rizal Razman, Mohd Haizzan Yahaya

Journal of Occupational Safety and Health, 2016;13(2):35-54.
MyJurnal

The construction industry is one of the largest sectors in Malaysia. This industry has become one of the main contributors
for national economic development and consistently contributes 3% to 5% to the national Gross Domestic Product (GDP). This
sector has also opened up job opportunities for various levels of employment. High demands and rapid urbanization offer huge
opportunities for registered contractors. Despite contributing in enhancing national economics, this sector has been regarded as one
of the most dangerous and hazardous workplaces due to the type of nature and the job activities at construction sites. According to
the International Labour Organization (ILO), 2.3 million fatalities related to occupational accidents and illnesses are estimated to
occur each year. Furthermore, 4 percent of world GDP is estimated to be lost due to occupational accidents and illnesses. The number
of fatality accidents in the construction industry was the highest with 652 cases of non-permanent disability (NPD) and permanent
disability (PD) accidents in the period 2007 to 2015, equivalent to 72.44 cases per year and representing 48.77% of the construction
industry. The huge gap between the number of accidents reported to SOCSO and DOSH becomes a major concern due to a rising
number of underreported cases of fatalities and injury in the construction sector, especially those involving foreign labour. The margin
between accidents reported to SOCSO and DOSH is 97.49%. Regards to rapid developments, safety measures to improve performance
management of OSH should be emphasized to reduce losses of life, property and productivity.

Matched MeSH terms: Construction Industry
High strength lightweight aggregate concrete using blended coarse lightweight aggregate origin from palm oil industry

Muhammad Aslam, Payam Shafigh, Mohd Zamin Jumaat

Sains Malaysiana, 2017;46:667-675.

The benefits of using structural lightweight concrete in construction industry, particularly in high rise buildings, over normal weight concrete are numerous. The main method of producing structural lightweight concrete is the use of lightweight aggregates instead of ordinary aggregates in concrete. Due to the limited resources for natural and artificial lightweight aggregates, the alternative sources for lightweight aggregates should be discovered from industrial wastes. Oil palm shell (OPS) and oil-palm-boiler clinker (OPBC) are two solid wastes from palm oil industry and are available in abundance in tropical regimes. The use of just OPS as coarse lightweight aggregate in concrete mixture has some drawbacks for concrete. The aim of this study was to investigate engineering properties of a lightweight concrete containing both of these aggregates. For this purpose, in this study, 50% (by volume) of OPS was replaced with OPBC in an OPS lightweight concrete. The test results showed that when OPS was substituted with OPBC, significant improvement was observed in the compressive, splitting tensile and flexural strengths. In addition, initial and final water absorption as well as drying shrinkage strain of blended coarse lightweight aggregate concrete were significantly less than OPS concrete.

Matched MeSH terms: Construction Industry
Coercive pressure as a moderator of organizational structure and risk management: Empirical evidence from Malaysian construction industry

Tagod M, Adeleke AQ, Moshood TD

J Safety Res, 2021 06;77:139-150.
PMID: 34092304 DOI: 10.1016/j.jsr.2021.02.011

INTRODUCTION: The construction industry in Malaysia has been bedevilled by myriads of risk issues that have hampered its smooth operations in recent times. This paper is an empirical assessment that aims to examine the effect of coercive pressure on the relationship between organizational structure and construction risk management among construction industry in Malaysia.
METHOD: Based on the proposed model, a quantitative method was employed to obtain data from G7 construction industry operating within the peninsular Malaysia. Out of the 180 copies of questionnaire, 165 copies were properly filled, returned, and used for the analysis. PLS-SEM was used to analyze the obtained data.
RESULTS: The findings of the study affirmed that specialization, centralization, and management of risk by the construction industry had positive correlation.
CONCLUSIONS: As anticipated, coercive pressure had positive moderating correlation with both formalization and the management of risk by the construction industry. Similarly, it was also found that in the course of carrying out construction activities, coercive pressure made significant interactive influence on formalization, specialization, and centralization. Practical Applications: Coercive pressure reduced the frequency of accidents among workers in the process of carrying out construction works.

Matched MeSH terms: Construction Industry/organization & administration*; Construction Industry/statistics & numerical data
A new species of karst forest Bent-toed Gecko (genus Cyrtodactylus Gray) not yet threatened by foreign cement companies and a summary of Peninsular Malaysia's endemic karst forest herpetofauna and the need for its conservation

Grismer LL, Wood PL, Anuar S, Davis HR, Cobos AJ, Murdoch ML

Zootaxa, 2016 Jan 04;4061(1):1-17.
PMID: 27395475 DOI: 10.11646/zootaxa.4061.1.1

A new species of Bent-toed Gecko, Cyrtodactylus gunungsenyumensis sp. nov. of the sworderi complex, is described from Hutan Lipur Gunung Senyum, Pahang, Peninsular Malaysia and is differentiated from all other species in the sworderi complex by having a unique combination of characters including a maximum SVL of 74.7 mm; low, rounded, weakly keeled, body tubercles; 34-40 paravertebral tubercles; weak ventrolateral body fold lacking tubercles; 38-41 ventral scales; an abrupt transition between the posterior and ventral femoral scales; 20-23 subdigital lamellae on the fourth toe; enlarged femoral scales; no femoral or precloacal pores; no precloacal groove; wide caudal bands; and an evenly banded dorsal pattern. Cyrtodactylus gunungsenyumensis sp. nov. is a scansorial, karst forest-adapted specialist endemic to the karst ecosystem surrounding Gunung Senyum and occurs on the vertical walls of the limestone towers as well as the branches, trunks, and leaves of the vegetation in the associated karst forest. Cyrtodactylus gunungsenyumensis sp. nov. is the seventh species of karst forest-adapted Cyrtodactylus and the sixteenth endemic species of karst ecosystem reptile discovered in Peninsular Malaysia in the last seven years from only 12 different karst forests. This is a clear indication that many species remain to be discovered in the approximately 558 isolated karst ecosystems in Peninsular Malaysia not yet surveyed. These data continue to underscore the importance of karst ecosystems as reservoirs of biodiversity and microendemism and that they constitute an important component of Peninsular Malaysia's natural heritage and should be protected from the quarrying interests of foreign industrial companies.

Matched MeSH terms: Construction Industry
Fulltext Properties of a New Insulation Material Glass Bubble in Geo-Polymer Concrete

Shahedan NF, Abdullah MMAB, Mahmed N, Kusbiantoro A, Tammas-Williams S, Li LY, et al.

Materials (Basel), 2021 Feb 08;14(4).
PMID: 33567696 DOI: 10.3390/ma14040809

This paper details analytical research results into a novel geopolymer concrete embedded with glass bubble as its thermal insulating material, fly ash as its precursor material, and a combination of sodium hydroxide (NaOH) and sodium silicate (Na2SiO3) as its alkaline activator to form a geopolymer system. The workability, density, compressive strength (per curing days), and water absorption of the sample loaded at 10% glass bubble (loading level determined to satisfy the minimum strength requirement of a load-bearing structure) were 70 mm, 2165 kg/m3, 52.58 MPa (28 days), 54.92 MPa (60 days), and 65.25 MPa (90 days), and 3.73 %, respectively. The thermal conductivity for geopolymer concrete decreased from 1.47 to 1.19 W/mK, while the thermal diffusivity decreased from 1.88 to 1.02 mm2/s due to increased specific heat from 0.96 to 1.73 MJ/m3K. The improved physicomechanical and thermal (insulating) properties resulting from embedding a glass bubble as an insulating material into geopolymer concrete resulted in a viable composite for use in the construction industry.

Matched MeSH terms: Construction Industry
Effects of safety leadership and safety management practices on safety participation through a casual-chain mediators approach in the Chinese construction industry

Shi H, Nadeem MA

Int J Occup Saf Ergon, 2023 Dec;29(4):1383-1394.
PMID: 36178706 DOI: 10.1080/10803548.2022.2131274

Objectives. This article aims to prompt first-line workers to go beyond regular job roles and engage in more discretionary safety behavior-safety participation in the Chinese construction industry. The construction industry is a high-risk industry, and first-line workers are more likely to be exposed to workplace hazards. Once accidents happen, the negative consequences would come out. Therefore, employee voluntary safety behavior is focused on in this research. Methods. The present research framework examines the roles of safety leadership and safety management practices from the group and organizational perspectives in predicting the voluntary safety behavior (safety participation) of first-line workers in the Chinese construction industry through casual-chain mediators (safety climate and job satisfaction). In this study, partial least squares structural equation modeling (PLS-SEM) is adopted for data analysis and hypotheses testing. Results. After data analysis, the results show that safety leadership and safety management practices are significantly and positively associated with safety participation of first-line workers through safety climate and job satisfaction. Moreover, safety management practices have a more statistical effect on safety climate compared to safety leadership. Conclusions. These results provide some practical implications for facilitating the workers to conduct safety participation inthe construction industry.

Matched MeSH terms: Construction Industry*
Occupational health and safety issues in the informal economic segment of Pakistan: a survey of construction sites

Ahmed I, Shaukat MZ, Usman A, Nawaz MM, Nazir MS

Int J Occup Saf Ergon, 2018 Jun;24(2):240-250.
PMID: 28795938 DOI: 10.1080/10803548.2017.1366145

This research covers the current status of occupational health and safety (OHS)-related practices in the informal construction segment of Pakistan. Data were collected, through interviews, from 316 construction sites employing 3577 workers. The results of the study reveal that both employers and workers lack knowledge of OHS laws/standards and no practices of this nature are enacted at these construction sites. Alarmingly, work-related accidents, whenever they happen, are not given due attention and there is no formal injury-report system. The informal construction industry employs a huge portion of the informal workforce, and lack of OHS happens at tremendous human cost. These research findings may thus play their role in strengthening the case for reforms in the sector. This study, if properly utilized, may also enable employers of the sector by increasing their knowledge about OHS practices and, as a result, trying to offer safer environments for their workers.

Matched MeSH terms: Construction Industry*
Safety in the construction industry: are we barking at the wrong tree?

Khairuddin Sulaiman, Norhayati Mahyuddin

Journal of Occupational Safety and Health, 2005;2(1):30-36.
MyJurnal

The construction industry is an important industry in the Malaysian’s economy. Much has been said about the quality of the product as well as the image of the industry due to the small percentage of local workers on site. The industry’s welfare and safety record is not at all encouraging. To stop the rot, the government has taken important and significant steps by the establishment of the Malaysian Construction Industry Development Board (CIDB) and the National Institute of Occupational Safety and Health (NIOSH). These efforts have shown some significant positive improvement in the perception and action of those involved in the industry but we are still far from the standard shown in other developed countries in terms of site safety. This paper is to discuss the roles and responsibilities of the key players in the industry be it the clients, consultants or contractors. The focus is on the ‘upstream’ activities i.e. the pre-construction stage, rather than the ‘downstream’ i.e. the construction phase of a project.

Matched MeSH terms: Construction Industry
Fulltext Sustainable management using recycle and reuse of construction waste materials in Malaysia

Shaharin Hamid, Che Maznah Mat Isa, Shamer N. Felix, Nur Kamaliah Mustaffa

ESTEEM Academic Journal, 2020;16(1):47-58.
MyJurnal

Ineffective construction waste management has become a serious problem that impacted significantly to environmental pollutions especially in a developing country like Malaysia. Despite the enactment of law by the government, Malaysia is still far behind as compared to other countries like Denmark and Hong Kong in terms of implementation of recycling and reuse of construction waste. Recycling and reuse of waste materials seems to be a profitable method that will boost the
lifetime of landfills and cut down the usage of virgin natural resources. This paper discusses the practices of recycling and reuse of construction waste materials in the Klang Valley. A questionnaire survey was administered to 117 respondents from construction companies. The most common types of construction waste materials that can be recycled and reused are concrete, metal, asphalt, brick, plastic, cardboard, timber and glass. A descriptive analysis using Relative Important Index (RII) was used to rank the items asked in the survey. It was found that the most frequent types of recycling and reuse of construction waste materials based on ranking is timber,
while the key benefit of recycle and reuse of construction waste is reduction of landfill space. On the other hand, the key challenge that affects recycling and reuse of construction waste is the risk of contamination. This study is beneficial for all parties involved in construction activities to achieve a more sustainable construction in Malaysia and throughout the world.

Matched MeSH terms: Construction Industry
Fulltext SYNTHESIS, CHARACTERISATION AND CORROSION INHIBITION SCREENING: Cu[EtBenzdtc]2 AND Cu[BuMedtc]2

Nur Alia Atiqah Alias, Nabilah Syakirah Zolkifli, Mimi Wahidah Mohd Radzi, Nur Nadia Dzulkifli

Journal of Academia Universiti Teknologi MARA Negeri Sembilan, 2021;9(1):56-65.
MyJurnal

Mild steel plays an essential part in many construction industries due to its low cost and excellent mechanical properties. However, the use of strong acid in pickling, construction, and oil refining processes adds to a serious corrosion problem for mild steel. Two Cu(II) dithiocarbamate (DTC) complexes were successfully synthesised, namely Cu(II) ethyl-benzyl DTC (Cu[EtBenzdtc]2) and Cu(II) butyl-methyl DTC (Cu[BuMedtc]2) complexes, by a condensation reaction and subsequently used to scrutinise the corrosion resistance activity towards mild steel in acidic media. The proposed structures of complexes were characterised by using the Fourier transform infrared (FTIR) and ultraviolet-visible (UV-Vis) spectroscopies. The melting point for Cu[EtBenzdtc]2 was found around 362–375°C, and 389–392°C for Cu[BuMedtc]2. The percentages of Cu(II) found in Cu[EtBenzdtc]2 and Cu[BuMedtc]2 were 7.6% and 7.5%, respectively. Both complexes were non-electrolyte based on the molar conductivity analysis. Their corrosion inhibition performances were tested by using a weight loss measurement. Cu[BuMedtc]2 showed a good result as a corrosion inhibitor compared to Cu[EtBenzdtc]2. The complexes showed good effectiveness in sulfuric acid (H2SO4) compared to hydrochloric acid (HCl) solution. Furthermore, Cu[BuMedtc]2 showed a good result as a corrosion inhibitor compared to Cu[EtBenzdtc]2 with the highest percentage of corrosion inhibition recorded at 91.8%. Meanwhile, the highest percentage of corrosion inhibition shown by Cu[EtBenzdtc]2 was only 86.9%. The lowest corrosion rate shown for Cu[BuMedtc]2 was 8.1944×10-4 cm-1 h-1. Meanwhile, the Cu[EtBenzdtc]2 showed the lowest corrosion rate only at 1.3194×10-3 cm-1 h-1. This implies that Cu[BuMedtc]2 showed lower corrosion rate but higher inhibition efficiency compared to Cu[EtBenzdtc]2.

Matched MeSH terms: Construction Industry
Fulltext Digital Technologies in the Architecture, Engineering and Construction (AEC) Industry-A Bibliometric-Qualitative Literature Review of Research Activities

Manzoor B, Othman I, Pomares JC

Int J Environ Res Public Health, 2021 06 06;18(11).
PMID: 34204147 DOI: 10.3390/ijerph18116135

Digital technologies (DTs) are proven helpful in the Architecture, Engineering and Construction (AEC) industry due to their varied benefits to project stakeholders, such as enhanced visualization, better data sharing, reduction in building waste, increased productivity, sustainable performance and safety improvement. Therefore, researchers have conducted various studies on DTs in the AEC industry over the year; however, this study explores the state-of-the-art research on DTs in the AEC industry by means of a bibliometric-qualitative review method. This research would uncover new knowledge gaps and practical needs in the domain of DTs in the AEC industry. In addition, bibliometric analysis was carried out by utilizing academic publications from Scopus (i.e., 11,047 publications for the AEC industry, 1956 for DTs and 1778 for DTs in the AEC industry). Furthermore, a qualitative review was further conducted on 200 screened selected research publications in the domain of DTs. This study brings attention to the body of knowledge by envisioning trends and patterns by defining key research interests, journals, countries, new advancements, challenges, negative attitudes and future directions towards DTs in the AEC industry. However, this study is the first in its vital importance and uniqueness by providing a broad updated review of DTs in the AEC literature. Furthermore, this research laid a foundation for future researchers, policy makers and practitioners to explore the limitations in future research.

Matched MeSH terms: Construction Industry*
Fulltext Impact of 3D Printing on the Overall Project Success of Residential Construction Projects Using Structural Equation Modelling

Waqar A, Othman I, Pomares JC

Int J Environ Res Public Health, 2023 Feb 21;20(5).
PMID: 36900821 DOI: 10.3390/ijerph20053800

After a decade of research and development, 3D printing is now an established technique in the construction sector, complete with its own set of accepted standards. The use of 3D printing in construction might potentially improve the outcome of the project as a whole. However, traditional strategies are often used in the residential construction industry in Malaysia, which causes serious public safety and health issues along with a negative impact on the environment. In the context of project management, overall project success (OPS) has five dimensions, such as cost, time, quality, safety, and environment. Understanding the role of 3D printing in relation to OPS dimensions in Malaysian residential construction projects would allow construction professionals to adopt 3D printing more easily. The aim of the study was to find the impact of 3D construction printing on OPS while considering the implications for all five dimensions. Fifteen professionals were interviewed to first evaluate and summarise the impact factors of 3D printing using the current literature. Then, a pilot survey was conducted, and the results were checked using exploratory factor analysis (EFA). The feasibility of 3D printing in the building sector was investigated by surveying industry experts. Partial least squares structural equation modelling was used to investigate and validate the fundamental structure and linkages between 3D printing and OPS (PLS-SEM). A strong correlation was found between 3D printing in residential projects and OPS. Highly positive implications are indicated by the environmental and safety dimensions of OPS. Malaysian decision-makers may look to the outcomes of introducing 3D printing into the residential construction industry as a modern method for increasing environmental sustainability, public health and safety, reducing cost and time, and increasing the quality of construction work. With this study's findings in hand, construction engineering management in Malaysia's residential building sector might benefit from a deeper understanding of how 3D printing is used for improving environmental compliance, public health and safety, and project scope.

Matched MeSH terms: Construction Industry*
Fulltext SEM-PLS analysis of inhibiting factors of cost performance for large construction projects in Malaysia: perspective of clients and consultants

Memon AH, Rahman IA

ScientificWorldJournal, 2014;2014:165158.
PMID: 24693227 DOI: 10.1155/2014/165158

This study uncovered inhibiting factors to cost performance in large construction projects of Malaysia. Questionnaire survey was conducted among clients and consultants involved in large construction projects. In the questionnaire, a total of 35 inhibiting factors grouped in 7 categories were presented to the respondents for rating significant level of each factor. A total of 300 questionnaire forms were distributed. Only 144 completed sets were received and analysed using advanced multivariate statistical software of Structural Equation Modelling (SmartPLS v2). The analysis involved three iteration processes where several of the factors were deleted in order to make the model acceptable. The result of the analysis found that R(2) value of the model is 0.422 which indicates that the developed model has a substantial impact on cost performance. Based on the final form of the model, contractor's site management category is the most prominent in exhibiting effect on cost performance of large construction projects. This finding is validated using advanced techniques of power analysis. This vigorous multivariate analysis has explicitly found the significant category which consists of several causative factors to poor cost performance in large construction projects. This will benefit all parties involved in construction projects for controlling cost overrun.

Matched MeSH terms: Construction Industry/economics*; Construction Industry/statistics & numerical data*
A comparative life cycle assessment (LCA) of concrete and steel-prefabricated prefinished volumetric construction structures in Malaysia

Balasbaneh AT, Ramli MZ

Environ Sci Pollut Res Int, 2020 Dec;27(34):43186-43201.
PMID: 32734541 DOI: 10.1007/s11356-020-10141-3

In recent years, off-site volumetric construction has been promoted as a viable strategy for improving the sustainability of the construction industry. Most prefabricated prefinished volumetric construction (PPVC) structures are composed of either steel or concrete; thus, it is imperative to carry out life cycle assessments (LCAs) for both types of structures. PPVC is a method by which free-standing volumetric modules-complete with finishes for walls, floors, and ceilings-are prefabricated and then transferred and erected on-site. Although many studies have examined these structures, few have combined economic and environmental life cycle analyses, particularly for prefinished volumetric construction buildings. The purpose of this study is to utilize LCA and life cycle cost (LCC) methods to compare the environmental impacts and costs of steel and concrete PPVCs "from cradle to grave." The results show that steel necessitates higher electricity usage than concrete in all environmental categories, while concrete has a higher emission rate. Steel outperforms concrete by approximately 37% in non-renewable energy measures, 38% in respiratory inorganics, 43% in land occupation, and 40% in mineral extraction. Concrete, on the other hand, performs 54% better on average in terms of measures adopted for greenhouse gas (GHG) emissions. Steel incurs a higher cost in the construction stage but is ultimately the more economical choice, costing 4% less than concrete PPVC owing to the recovery, recycling, and reuse of materials. In general, steel PPVC exhibits better performance, both in terms of cost and environmental factors (excluding GHG emissions). This study endeavors to improve the implementation and general understanding of PPVC.

Matched MeSH terms: Construction Industry

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