I. O. Omuh

Data exploration on factors that influences construction cost and time performance on construction project sites

This data article explores the factors that contribute to maintaining steady cost projection on construction projects. The data was obtained using structured questionnaire designed in Likert scale. The responses were solicited from category of construction practitioners. Simple random sampling was employed in the distribution of the questionnaires to the respondents. Data samples were analysed using severity index, ranking and simple percentages. The analysis of the data brought to fore some important data on factors that causes cost overrun, they include: contractors inexperience, inadequate planning, inflation, incessant variation order, and change in project design. They are critical to causing cost overrun, while project complexity, shortening of project period and fraudulent practices are found to be responsible. The data fall within the percentages of possible consequences of cost overrun when compared with those available in scientific literature. The data can provide insights on how to mitigate the risks of project deviation from initial cost and as-built project.

Construction Waste Prevention as a Sustainable tool in Building Mega Cities: A Theoretical Framework

In building of mega cities, the construction industry is contributing to alarming volumes of construction materials waste being generated causing an imbalance in the world’s ecosystem. The study developed a framework for construction waste prevention strategies as a sustainable tool in building mega cities. Using content analysis of various literatures reviewed,the study developed a framework for preventing waste generation in construction projects in mega cities. In the building of present and future mega cities, there is need to submit mandatory construction waste prevention strategies as part of the contract documentation to the client, client representatives and the town planning authorities in order to build liveable and sustainable cities.

Data on the pozzolanic activity in coconut shell ash (CSA) for use in sustainable construction

The data presented herein are results of the research summary of the investigation for pozzolanic activity in coconut shell ash (CSA) towards a sustainable construction. The data article provides information on the properties of Coconut Shell Ash that are indicative of pozzolanic activity as stated in ASTM C618-15 (2015) [1], BS EN 197-1 (2011) [2] and Joshua et al. (2018) [3]. The data are the physical property of the sand used in determining the binder strengths and the chemical and physical properties (oxide composition and Strength Activity Indices respectively) of the pulverized, calcined and sieved Coconut Shell Ash.

Data on mixing and curing methods effects on the compressive strength of concrete

Curing, though important is sometimes underrated in concrete production. This dataset provided shows the effects of four (4) different methods of curing on two distinct mix ratios. The data provided in this article are for a study that was conducted on one hundred and sixty (160) cube samples of mix ratios 1:2:4 and 1:1.5:3 while employing four (4) different methods of curing. The data given in the article displays the finding of the study. The findings can aid in prediction and optimization of concrete behavior and compressive strength when any of the curing methods are utilized.

THE IMPACT OF EMBEDDED MULTIMEDIA VIDEO LEARNING OF BUILDING CONSTRUCTION PRACTICE ON CONSTRUCTION STUDENTS

Building construction practice involves the process of producing buildings. Over the years, students have reported difficulties grasping the concept because it goes beyond theory. The visual aspect of the course makes the understanding and practice of the course worthwhile for construction students. As the saying goes, seeing is believing. Various instructional designs such as frequent site visits, construction clip arts, workshop practice have been instituted to ease the burden of understanding the course. In this vein, the study aims to assess the impact of embedded multimedia video learning of building construction practice on construction students. The study is a quantitative one through the use of questionnaires. A random sampling design was used for the study. The respondents were building technology students from year two to year five offering the course in a Private tertiary institution in Nigeria. The result revealed that the use of embedded multimedia video learning of building construction practice increased the memory of the course and encouraged class discussion. The study revealed that the use of a maximum 10 minutes instructional video on specific building construction topics were most effective. The major challenge identified in the use of video learning was the frequent power outage making it difficult either to use or complete its use. In conclusion, the use of embedded multimedia video learning should be encouraged at all levels. It was recommended that smart boards multimedia connected to alternative power sources be made available for all building construction practice classes, although this requires sufficient funding. Also, video cameras should be mounted on local construction sites to capture valuable construction activities and made available for academic purposes.