Browsing by Author "Kareem, W. B."

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A Comparative Study of Compressed Earth Bricks (Ceb's) and Sandcrete Blocks for Building Construction
(Nigerian Journal of Technological Research (NJTR), 2017) Kareem, W. B.; Okwori, R. O.; Kagara, A. B.; Igwe, C. O.; Ayandokun, S. T.
This study examined the production and testing of sandcrete bricks and compressed earth bricks (CEB’s) with a view to comparing their strength and moisture content of materials used. Some units of sandcrete bricks and laterite bricks were made using machine vibrated sandcrete brick mould and hydraulic brick making machine respectively. The bricks were tested to determine their moisture content and compressive strength. The results obtained from the tests were compared with the specifications of Nigerian Building and Road Research Institute (2006), Nigerian Building Code (2006), and Nigerian Industrial Standards (2000). The results indicated that the compressive strength of 300x150x170 sandcrete bricks varies from.1.3 N/mm² to 2.6 N/mm², as the curing age increases from 7 to 28 days. For laterite bricks, the strength varies from 1.0N/mm² at 7 days to 2.2N/mm² at 28 days. All the bricks produced satisfied the minimum requirements in terms of compressive strength, by all available codes, but the compressive strength of sandcrete bricks is higher than the CEB's. It was concluded that sandcrete bricks have better strength compare to compressed earth brick, more so compressed earth bricks (CEB's) absorb more water than sandcrete bricks, and:‘sandcrete bricks can be use as substructure (foundation unit). It was recommended among others that sandcrete bricks should be used for foundation of a building.
Assessment of National Project Health and Safety Plan Template Compliance by Building Con.struction Industries in Abuja Metropolis
(Journal of Information, Education, Science and Technology, 2021) Mohammed, U. K.; Igwe, C. O.; Kareem, W. B.
The study assessed the level of compliance with Health and Safely Plan on Scaffolding and Roof works in Building construction site in Abuja Metropolis. Two research questions were raised and answered as well as two hypotheses were formulated and tested at 0.05 level of significance. Descriptive survey research design was adopted for the study. Study was conducted at building construction site in Abuja Metropolis. The population of this study comprised of 127respondentsfrom the selected registered construction companies in Abuja Metropolis. A structured questionnaires which contain 50 items was designed to obtain information from the respondents. The instrument was subjected to face and content validation by three experts, which include two in Building Technology Education, Federal University of Technology Minna, one from Niger State Ministry of Work and Infrastructural Development (MOWID). The reliability coefficient of the instrument was determined using Cronbach Alpha formula and reliability index of 0.81 was obtained. The data collected was analyzed using mean and standard deviation while ttest statistics was uséd to test the null hypotheses at 0.05level of significance. Base on the data analyzed the following findings among other revealed that erection of scaffold under the supervision of competent personnel are not complied with, erection of guard-rail and toe to a safer height at the opening site are not effectively complied with, precaution are not taken to effectively stop debris falling on to others working under the roof. Base on the finding it was recommended that, Government should provide appropriate inspection services and enforce the application of the Health and Safely Plan officers in order to ensure compliance by all building construction industries in Abuja Metropolis. Construction Company should appoint qualified personnel whose special and main responsibility is the promotion of health and safety at all Building construction site.
Improving Safety Procedure and Accident Prevention on Construction Sites in Abuja, Nigeria
(ATBU Journal of Technology and Educational Research (JOTER), 2019) Igwe, C. O.; Kareem, W. B.; Stephen, M. D.; Nwachukwu, A. O.
The study determined ways of improving safety procedure and accident prevention on construction sites in Abuja, Nigeria. Today, construction sites are considered as one of the most hazardous places in the world. The population of the study was 100 (20 professional builders and 80 building professionals). Two research questions were raised and two hypotheses were formulated that guided the study and tested at 0.05 level of significance. A twenty (20) items instrument title improving Safety procedures and Accident prevention on construction Sites (QISPAPCS) questionnaire was developed by the researcher and used for data collection. The questionnaire was validated by three specialist and. A pilot of the instrument was carried out. A reliability coefficient of 0.08 was obtained using Cronbach alpha reliability method. Data was analyzed using mean, Standard Deviations and z-test statistics. Finding revealed among other that there are seven (7) major causes of accidents at buildings construction sites, there is no significant difference between the mean ratings of professional builders and technicians on the major causes of accident at building construction sites. Based on the findings, the study recommends among others that there should be training and appointment of a resident safety personnel/manager to implement safety policies and form a motoring control system to always remind workers about personal safety responsibility at the site