Search

Large expanses of green, open land are frequently converted as a result of population growth and quick development. This phenomenon causes the decreasing of water infiltration area which has an impact on increasing runoff coefficient. In the urban drainage problem, paving blocks are often used as road pavement construction materials to reduce surface runoff. The aim of this research is to study the characteristic of flow in the paving block made from plastic waste material. The research conducted in the laboratory testing utilizing a rainfall simulator by several variations in slope of 0% to 15%. The findings indicate that paving blocks made from plastic waste have less runoff coefficient than asphalt and/or concrete pavement. There is a correlation between the slope of the land and the runoff coefficient value which the runoff coefficient value increasing as the slope of the land increases. That finding is then applied in urban drainage problem located in the Cipamokolan Village region in Bandung City with the help of SWMM program for drainage calculation. As a result, the runoff discharge is decreasing by implementing the paving block made from plastic waste.

Electric vehicles with batteries have started to create a significant impact on the automobile industry nowadays. Along with battery manufacturers, automakers are developing new battery designs for electric vehicles, paying close attention to details like energy storage effectiveness, construction qualities, safety, affordability, and battery performance. The Chinese automaker developed the BYD Blade Battery Build Your Dream (BYD) in 2020. It is primarily a lithium iron phosphate (LFP) battery with prism-shaped cells, with an energy density of 165 Wh/kg and an energy density pack of 140Wh/kg. This essay briefly reviews the BYD Blade Battery’s performance compared to other battery models, model architecture, safety implications of the nail penetration experiment, and cost comparisons with other alternatives.

The future of construction industry development is the approach of the component-industrialization, the construction-breakdown, design-identical, construction-assembled, operation-data technique to maximize the life cycle value. This paper presents a general idea of Industrial Revolution (IR) 4.0 with the introduction descriptions of important aspects in Construction Industry (CI) development. The aim is to define and show possible research areas connected with the IR 4.0 into the CI. For this purpose, an analysis was made, based on the most recent literature, to point out actual needs in the CI in terms of its evolution into IR 4.0 level. It is shown that multidiscipline approaches are not investigated to create special rules, procedures and methods and know-how designed for introducing the principles of IR 4.0 in the CI. A popular from stakeholders in the CI understand how digitization is affecting each part of their trade, however, its practical applications are still in infancy stage. IR 4.0 concepts should be combined with construction production, novel expertise must be applied to the intellectual engineering of modern construction, enhance the level of incorporation, to achieve the sustainable development.

Delays and cost overruns are obviously common problems in the construction industry in several developed and developing nations. The purpose of this study is to identify factors cause delays and cost overruns in the construction of palm oil refinery projects in Malaysia. A questionnaire survey of a randomly selected sample was filled by 89 respondents. The questionnaire included 179 factors which classified into 13 groups. The degree of importance of the delays and cost overrun factors were evaluated and ranked by importance degree, based on the viewpoints of stakeholders. The data was analytically investigated by descriptive statistic methods and Relative Important Index (RII). The results of RII showed that Delays in subcontractor’s work, Lack of subcontractor skill, and Poor/inadequate planning and scheduling with RII 0.78, 0.77, and 0.75, respectively, are the most important causes. These causes represent the baseline margin for project management of palm oil refinery construction and development. According to these results, it is suggested that: project client should collaborate with contractors and simplify payments procedures to mitigate delays; coordinate continuously and enhance the association among project stakeholders are obligatory in order to improve the project performance.