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Research Article
Impact of Material Management on Construction Project Delivery in Shager City, Melka Nono Sub City
Issue:
Volume 11, Issue 2, April 2026
Pages:
30-40
Received:
19 August 2024
Accepted:
27 September 2024
Published:
19 March 2026
Abstract: The construction industry is one of the main job makers in developing countries and is highly inexpensive. The high number of project failures proposes the existence of essential material management which have not been identified. This study aimed to explore the impact of material management on construction project and evaluate how they affect project delivery in Shager city, specifically on Melka Nono sub city. Relevant literature has been reviewed to identify impact of material management. Accordingly, 34 impact factors were identified and grouped under 8(eight) main factors these are planning-related factors, procurement-related factors, stock and waste control-related, Handling- factors, logistics- factors, time factors, quality- factors, and cost overrun-related factors. The data collection about impact of material management on construction projects was conducted by using questionnaire and interview. Statistical Package for Social Sciences was used for data collection.. Descriptive research design was employed using quantitative and qualitative approach. The main sources of the information were clients, contractors, consultants and others in construction projects of Shager city, Malka Nono sub city. Respondents were purposively selected. Out of 120 questionnaires distributed 111 were returned. The result has shown that the top significant impact of material management of construction projects in Shager city, Malka Nono sub city are Project will be constructed on time or earlier than expected, Improvement in project schedule, Providing adequate storage of materials, Reduction in duplicated order, The effective design site layout so as to aid in the management of materials on site, Reduce cost of materials, Purchase saving, and Better handling of materials. Considering the obtained results of this research, in order to accomplish construction projects material management the contractor of the project should have an experienced leader of the project and effective decision maker project manager. Client should ensure adequate preparation for fund is made before projects are started and the objective of project should be clearly stated for constructing parties.
Abstract: The construction industry is one of the main job makers in developing countries and is highly inexpensive. The high number of project failures proposes the existence of essential material management which have not been identified. This study aimed to explore the impact of material management on construction project and evaluate how they affect proj...
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Research Article
Liquefaction Susceptibility of Saturated Sandy Interbeds in Low-to-Moderate Seismic Zones: A Case Study of the Guinea Coastal Wetland System
Abdul Ahmed Koroma*
,
Victor Sorie Kamara,
Michael Kingsley Afful
Issue:
Volume 11, Issue 2, April 2026
Pages:
41-47
Received:
22 February 2026
Accepted:
30 March 2026
Published:
13 April 2026
DOI:
10.11648/j.jccee.20261102.12
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Views:
Abstract: This study evaluates the liquefaction susceptibility and geotechnical stability of saturated sandy interbeds within the Guinea Coastal Wetland System (Sonfonia site), a low-to-moderate seismic zone. Integrating data from four deep boreholes (BH-01 to BH-04), a stratigraphic cross-section was developed illustrating extreme lateral heterogeneity. Findings reveal that while the eastern sector (BH-03) is dominated by competent Well-Graded Gravel (GW-GM) with a high safe bearing capacity of 893.8 kPa, the western sector (BH-04) contains a thick (approx. 7m) deposit of highly compressible Fat Clay (CH). Liquefaction triggering analysis, conducted at a design Peak Ground Acceleration (PGA) of 0.10g (475-year return period) and a fully submerged groundwater table (0.0m–0.22m), yielded a minimum Factor of Safety (FOS) of 1.45. Despite the high saturation, the risk of liquefaction is deemed low due to the dense nature of the sandy interbeds (N1 60 values up to 41.5). However, significant settlement risks in the western sector, calculated between 1,075 mm and 1,286 mm, necessitate the use of deep-bored pile foundations to ensure structural integrity. These results provide a critical technical framework for seismic-resilient infrastructure design in tropical coastal wetlands.
Abstract: This study evaluates the liquefaction susceptibility and geotechnical stability of saturated sandy interbeds within the Guinea Coastal Wetland System (Sonfonia site), a low-to-moderate seismic zone. Integrating data from four deep boreholes (BH-01 to BH-04), a stratigraphic cross-section was developed illustrating extreme lateral heterogeneity. Fin...
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Research Article
Longitudinal Restrain of the Newly Developed Floating Fastener
Zeng Zhiping,
Joel Koilel Rempeyian,
Kofi Nti Sampson*,
Qi Xingzhe,
Ayaz Ahmed
Issue:
Volume 11, Issue 2, April 2026
Pages:
48-52
Received:
9 February 2026
Accepted:
31 March 2026
Published:
21 April 2026
DOI:
10.11648/j.jccee.20261102.13
Downloads:
Views:
Abstract: Railway fastening systems are a crucial component of railway tracks, playing a significant role in ensuring the stability of the track and preventing gauge widening and rolling. The ability to resist longitudinal loads along the rail is among the most important qualities a good fastening system should have. This value is usually measured as a fastening system’s longitudinal restraint and has stipulated procedures to perform the test, in accordance with the international standard or the European standard requirements. Longitudinal loads mainly occur due to creep, rail thermal expansion and contraction, acceleration and deceleration of the train. In view of the fact that the modern tracks experiences large longitudinal forces, the fastening systems should provide adequate restraint force to withstand these types of forces. In this paper, we will study the longitudinal restraint of the recently developed Jiuzhou floating fastener. The test is conducted in accordance with the procedure provided by the European railway fastening system testing standard. The fastener was fastened to a concrete block, and a hydraulic actuator of 25kN was used to apply a push to the rail fixed to the concrete block by the floating fastener. A displacement accelerometer was placed on the end of the rail at the centroid region of the rail to ensure that accurate and reliable results were collected. A push force was applied on the rail until the rail slipped from the assembly while simultaneously recording the rail displacement in relative to the support using the displacement sensors. The load is then unloaded to zero. This procedure was repeated for four times without any adjustment to the set-up, the first data was ignored, and the other three data were collected and averaged to obtain the final longitudinal restraint of the fastening assembly. The floating fastening assembly longitudinal restraint was calculated to be 14.04kN, which satisfactorily meets the standard requirement for longitudinal restraint value which should not be less than 9kN for fasteners intended for high-speed railways.
Abstract: Railway fastening systems are a crucial component of railway tracks, playing a significant role in ensuring the stability of the track and preventing gauge widening and rolling. The ability to resist longitudinal loads along the rail is among the most important qualities a good fastening system should have. This value is usually measured as a faste...
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