| 1 |
Author(s):
Alexa Becerra .
Page No : 1-27
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Functional Evaluation of Rural Housing Based on a Seismically Optimized Proposal With Respect to the E-080 Standard, Shaullo Chico Baños Del Inca.
Abstract
The purpose of the research carried out is to evaluate the functional state of the houses built with adobe in the Shaullo Chico Village Center, Baños del Inca, Cajamarca, and to quantify the main internal and external deficiencies that may influence their behavior in the event of a seismic event. The methodology used is framed in a non-experimental descriptive approach, applied study design and the sample consisted of 20 houses built with adobe, for which a non-probabilistic sampling was used. Data collection was carried out through detailed observations of each household, and then the Shapiro-Wilk test was applied in the processing of the information. It is important to note that the registered homes were built by the inhabitants of the area themselves, who lacked exhaustive knowledge of building regulations and did not have technical advice during the design and construction process. The processed results reveal the deficiencies identified in the selected homes. Five percent (5%) of the houses showed a deficient condition, characterized by the absence of over foundation in accordance with the E-080 standard, as well as problems of settlement, deformation and cracking in the walls. On the contrary, 95% of the houses presented a regular state, in which some failures and cracks were observed that did not compromise the structural integrity. In particular, the houses in poor condition showed a lack of knowledge in the execution of the construction as established in the E-080 regulation. In conclusion, this study indicates that most of the dwellings in Shaullo Chico, Baños del Inca, Cajamarca, exhibit a functional state classified as regular, with certain deficiencies that do not seriously compromise their structural system.
| 2 |
Author(s):
Mailafiya Benjamin Yusuf, Yusuf Emmanuel, Garnvwa Jennifer D., Yohanna A. Y..
Page No : 28-38
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Level of Health and Safety Compliance by the Artisans of Construction SMEs of Different Anthropological Cultures in Abuja Municipal Area Council (AMAC).
Abstract
Health and safety compliance in all industries is a serious issue of concern. More especially in small and medium size construction firms can never be over emphasized. This study was motivated by the reason of daily health and safety related cases on construction sites within and outside the Nigerian construction industry. The differences which exist in the anthropological culture of people provide the curiosity to determine how it influences the level of health and safety compliance of the construction artisans. Therefore, this study will determine the level of health and safety compliance by the construction artisans of different anthropological cultures: Abuja Municipal Area Council (AMAC). This study area is preferred because it has the highest share of construction activities and composition of the various anthropological cultures in Nigeria. A quantitative study; survey questionnaire was used by means of cluster sampling type of the random sampling technique. The data analysis was done using the Statistical Package for Social Science (SPSS) 21. From the results obtained; it shows that the composition of the construction artisans of the small and medium construction firms in the AMAC are; Hausa, Igbo, Yoruba and the rest which are termed as “Others” in this study. The result shows that Hausa are the most populated, the “Others” are the next, followed by the Yoruba, and the last but not the least is the Igbo. The result shows that the level of artisans complains to the health and safety on small and medium construction firms is generally moderate.
| 3 |
Author(s):
Mailafiya B. Y., Adamu A. Y., Sule E., Maude E. H..
Page No : 39-46
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Traffic Flow into Lafia Metropolis, Nasarawa State, Nigeria.
Abstract
This study quantified the vehicular flow into Lafia metropolis, a key commercial corridor linking northern and eastern Nigeria. Traffic-counting devices were deployed on the Makurdi-Lafia, Shendam-Lafia, and Akwanga-Lafia highways for one week. The collected data were analyzed to obtain vehicle volumes, class distributions, and speed statistics at these entry points. Results indicate that Akwanga-Lafia recorded the highest total vehicles (110,161), followed by Makurdi-Lafia (83,731) and Shendam-Lafia (55,995). Makurdi-Lafia also exhibited the highest recorded speed (156.8 km/h). Notably, a significant percentage of medium and heavy vehicles exceeded their posted speed limits, likely due to their lower PSL values. These findings highlight specific high-volume and high-speed corridors where traffic management and enforcement should be intensified. The study fulfills its aim by providing evidence-based insights for improving road safety in Lafia.
Keywords: vehicular speed; traffic volume; speed distribution; Lafia metropolis
| 4 |
Author(s):
H. Adam, A. O. Ibrahim, J. Wasiu.
Page No : 47-63
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Investigating the Potential of Groundnut Shell Ash as a Cementitious Supplement in Enhancing the Engineering Properties of Lateritic Soil.
Abstract
There has been a lot of global research on the economically effective use of wastes for engineering applications as a result of the need to lower the cost of waste disposal and the rising expense of soil stabilizers. This study investigates the performance of Groundnut Shell Ash (GSA) as a supplementary material to cement in the stabilization of lateritic soil, with the aim of enhancing its engineering properties for geotechnical applications. The experimental program involved the characterization of lateritic soil blended with varying GSA contents (0%–6%) and evaluation through geotechnical, chemical, mineralogical, and strength tests. Results reveal that the specific gravity of the soil decreased with increased GSA content due to the ash’s lower density, although values at 2%–4% remained within acceptable limits. Plasticity characteristics were moderately affected; the plasticity index decreased significantly at 6% GSA, indicating reduced soil plasticity and improved workability. The California Bearing Ratio (CBR) test results showed a significant improvement in soil strength with GSA addition, with maximum CBR (48%) recorded at 4% GSA, exceeding the minimum standard of 30% for sub-base materials. Statistical analysis further confirmed a strong positive correlation (r = 0.997) between GSA content and CBR, validating GSA’s efficacy in enhancing load-bearing capacity. The regression equation shows that at 0% GSA, the CBR value is reduced by 7.333% from the base intercept (41.33%), reflecting the unmodified lateritic soil's lower strength. As 2% GSA is added, the CBR slightly improves by 0.6667%, while at 4% GSA, the improvement becomes more significant with a 6.667% increase. This trend suggests that GSA has a positive effect on soil strength when used moderately, particularly at 4% replacement
